MXPA98004183A

MXPA98004183A - Derivatives of triazine containing groups 2,2,6,6-tetrametil-4-piperid

Info

Publication number: MXPA98004183A
Application number: MXPA/A/1998/004183A
Authority: MX
Inventors: Zedda Alesandro; Ferri Gianluca
Original assignee: Ciba Specialtychemicals Holding Inc
Priority date: 1997-05-27
Filing date: 1998-05-27
Publication date: 1999-02-01

Abstract

A compound of Formula (I) (See Formula) wherein n is an integer from 1 to 4, the radicals R 1 for example a group of formula (See Formula) R 3 is for example hydrogen, alkyl of 1 to 6 atoms of carbonocycloalkoxy of 5 to 12 carbon atoms, Z and R2 are for example a group (See Formula) radicals A and E are, for example, independently of each other -N (R11) (R12) or a group of formula (See Formula) R11 and R12 are for example alkyl of 1 to 12 carbon atoms, R13 has for example one of the meanings given for R3, E * has for example one of the meanings given for A or is a group of formula (See Formula). The compounds of formula (I) are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers such as olefin.

Description

"DERIVATIVES OF TRIAZINE CONTAINING GROUPS 2,2,6,6-TETRAMETIL-4-PIPERIDILO" Triazine Derivatives Containing 2,2,6,6-tetramethyl-4-piperidyl groups This invention relates to triazine derivatives containing 2, 2, 6, 6-tetramethyl-4-piperidyl groups, when used as anti-stabilizers. light, heat stabilizers and anti-oxidation stabilizers for organic materials, particularly synthetic polymers, and the organic materials thus stabilized. The stabilization of synthetic polymers with 2, 2, 6, 6-tetramethylpiperidine derivatives has already been described, for example, in US-A-4 086 204, US Pat. No. 4,234,707, US-A-4 331 586 , US-A-4 335 242, US-A-4 459 395, US-A-4 492 791, US-A-4 847 380, US-A-5 198 546, US-A-5 455 347, EP -A-53 775, EP-A-357 223, EP-A-377 324 and EP-A-488 502. This invention relates in particular to a compound of formula (I) wherein n is an integer from 1 to 4, - the radicals Rx are, independently of each other, hydrogen, alkyl of 1 to 8 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, unsubstituted or substituted with 1, 2 or 3 alkyls of 1 to 4 carbon atoms; or a group of formula (II), with the proviso that at least one of the radicals R x is a group of formula (II) R 3 is hydrogen, alkyl of 1 to 8 carbon atoms, O ", -OH, -CH 2 CN, alkoxy of 1 to 18 atoms carbon, cycloalkoxy of 5 to 12 carbon atoms, alkenyl of 3 to 6 carbon atoms, phenylalkyl of 7 to 9 carbon atoms unsubstituted or substituted on phenyl with 1, 2 or 3 alkyls of 1 to 4 carbon atoms or acyl of 1 to 8 carbon atoms; Z is a group of formula (Illa) or (Illb), - R.-C- -C- • (CH, 2) 'm CH CH, - -o- -CH CH, - R " (Illa) (lllb) R 4, R 3 and R 9 are independently from each other, alkyl of 1 to 4 carbon atoms or cycloalkyl of 5 to 12 carbon atoms unsubstituted or substituted by 1, 2 or 3 alkyls of 1 to 4 carbon atoms; Rs, R6 and R7 are independently from each other, hydrogen or alkyl of 1 to 4 carbon atoms; m is zero or an integer from 1 to 6; p is 1 or 2; R2 has one of the meanings given for Z or is alkylene of 2 to 12 carbon atoms, cycloalkylene of 5 to 7 carbon atoms, cycloalkylene of 5 to 7 carbon atoms-di (alkylene of 1 to 4 carbon atoms), alkylene of 1 to 4 carbon atoms-di (cycloalkylene of 5 to 7 carbon atoms), phenylene-di (alkylene of 1 to 4 carbon atoms) or alkylene of 4 to 12 carbon atoms interrupted with 1,4-piperazinodiyl , -0- or > N-X1, where Xx is acyl of 1 to 12 carbon atoms or (alkoxy of 1 to 8 carbon atoms) carbonyl or having one of the meanings given for Rlf except hydrogen; the radicals A are independently of one another -OR10, -N (R1X) (R12) or a group of formula (IV): R10, Rlt and R12 are each independently hydrogen, alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 12 carbon atoms unsubstituted or substituted by 1, 2 or 3 alkyls of 1 to 4 carbon atoms; alkenyl of 3 to 12 carbon atoms, phenyl unsubstituted or substituted by 1, 2 or 3 alkyls of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms; phenylalkyl of 7 to 9 carbon atoms unsubstituted or substituted on phenyl with 1, 2 or 3 alkyls of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, tetrahydrofurfuryl or alkyl of 2 to 4 carbon atoms substituted in position 2, 3 or 4 with -OH, alkoxy of 1 to 8 carbon atoms, di (alkyl of 1 to 4 carbon atoms) amino or a group of formula (V): N- (V) where Y, -0-, -CH2-, -CH2CH2- or > N-CH3; or -NÍRj (R12) is additionally a group of formula (V); R13 has one of the meanings given for R3; X2 is -0- or > N-R14; R 14 is hydrogen, alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 12 carbon atoms unsubstituted or substituted with 1, 2 or 3 alkyls of 1 to 4 carbon atoms; phenylalkyl of 7 to 9 'carbon atoms unsubstituted or substituted on phenyl with 1, 2 or 3 alkyls of 1 to 4 carbon atoms or alkoxyls of 1 to 4 carbon atoms; tetrahydrofurfuryl, a group of formula (II) or alkyl of 2 to 4 carbon atoms substituted in the 2, 3 or 4 position with -OH, alkoxy of 1 to 8 carbon atoms, di (alkyl of 1 to 4 carbon atoms) ) amino, or a group of formula (V); the radicals E have, independently of each other, the meanings given for A; and E * has one of the meanings given for A or is a group of formula (VI) being A, E, Rj and Z as defined above; with the proviso that, when n is 2, 3 or 4, each of the radicals E *, Rx and R2 in the repetitive units may have the same or a different meaning. Each of the radicals E *, Rx and R2 preferably has the same meaning in the various repeating units of the formula (I). Examples of alkyl containing not more than 12 carbon atoms are methyl, ethyl, propyl, isopropyl, butyl, 2-butyl, isobutyl, t-butyl, pentyl, 2-pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, t- octyl, nonyl, decyl, undecyl and dodecyl. R11 # R12 and R14 are preferably alkyl of 1 to 8 carbon atoms, in particular alkyl of 1 to 4 carbon atoms. R 4 is preferably methyl or ethyl. One of the preferred meanings of Rx is methyl. An example of alkyl of 2 to 4 carbon atoms substituted with -OH is 2-hydroxyethyl. Examples of alkyl of 2 to 4 carbon atoms substituted with alkoxy of 1 to 8 carbon atoms, preferably alkoxy of 1 to 4 carbon atoms, in particular methoxy or ethoxy, are 2-methoxyethyl, 2-ethoxyethyl, 3-methoxypropyl , 3-ethoxypropyl, 3-butoxypropyl, 3-octoxypropyl and 4-methoxy-butyl. Examples of alkyl of 2 to 4 carbon atoms substituted with di (C 1 -C 4) alkyl amino, preferably with dimethylamino or diethylamino, are 2-dimethylami-noethyl, 2-diethylaminoethyl, 3-dimethylaminopropyl, 3- diethyl aminopropyl, 3-dibutylaminopropyl and 4-diethylaminobutyl. The group of formula (V) is preferably: Preferred examples of alkyl of 2 to 4 carbon atoms substituted with a group of formula (V) are the groups of formula / \ -N 0 • The group,, is a particularly preferred example of alkoxy containing not more than 18 carbon atoms, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy. , pentoxyl, isopentoxyl, hexoxyl, heptoxyl, octoxyl, decyloxy, dodecyloxy, tetradecyloxy, hexadecyloxy and octadecyloxy Alkoxyl of 6 to 12 carbon atoms, in particular heptoxyl and octoxyl, is one of the preferred meanings of R3. from 5 to 12 carbon atoms which is unsubstituted or substituted by 1,2 or 3 alkyl of 1 to 4 carbon atoms are cyclopentyl, ethylcyclopentyl, di ethylcyclopentyl, cyclohexyl, methylcyclohexyl, dimethylcyclohexyl, trimethylcyclohexyl, t-butylcyclohexyl, Cyclo-octyl, cyclodecyl and cyclododecyl Unsubstituted or substituted cyclohexyl is preferred Examples of cycloalkoxy of 5 to 12 carbon atoms are cyclopentoxy, cyclohexoxyl, cycloheptyl, cyclo-octoxyl, cyclode cycloxyl, cyclododecyloxy and methylcyclohexoxyl. Cycloalkoxy of 5 to 8 carbon atoms is preferred, in particular cyclopentoxy and cyclohexoxyl. Examples of alkenyl containing not more than 12 carbon atoms are allyl, 2-methylallyl, butenyl, hexenyl, undecenyl and dodecenyl. Alkenyls are preferred in which the carbon atom in position 1 is saturated, and allyl is particularly preferred. Examples of phenyl substituted with 1,2 or 3 alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms are methylphenyl, dimethylphenyl, trimethylphenyl, t-butylphenyl, di-t-butylphenyl, 3,5-di. -t-butyl-4-methylphenyl, methoxyphenyl, ethoxyphenyl and butoxyphenyl. Examples of phenylalkyl of 7 to 9 carbon atoms which is unsubstituted or substituted on phenyl with 1, 2 or 3 alkyls of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, are benzyl, methylbenzyl, methoxybenzyl , dimethylbenzyl, trimethylbenzyl, t-butylbenzyl and 2-phenyl-ethyl. Benzyl is preferred. Examples of acyl (aliphatic, cycloaliphatic or aromatic) containing not more than 12 carbon atoms are formyl, acetyl, propionyl, butyryl, pentanoyl, hexanoyl, heptane-yl, octanoyl and benzoyl. Preferred are the alkanoyl of 1 to 8 carbon atoms and benzoyl. Acetyl is especially preferred. Examples of (C 1 -C 8 alkoxy) carbonyl are methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl, pentoxycarbonyl, hexoxycarbonyl, heptoxycarbonyl, octoxycarbonyl, nonyloxycarbonyl, decyloxycarbonyl, undecyloxycarbonyl and dodecyloxycarbonyl. Examples of alkylene containing not more than 12 carbon atoms are ethylene, propylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, octamethylene, deca ethylene and dodecamethylene. R 2 is, for example, alkylene of 2 to 8 carbon atoms or alkylene of 4 to 8 carbon atoms, in particular alkylene of 2 to 6 carbon atoms, preferably hexamethylene. An example of cycloalkylene of 5 to 7 carbon atoms is cyclohexylene. Examples of alkylene of 4 to 12 carbon atoms interrupted with 1,4-piperazinodiyl are and -CH2CH2CH-N N-CH2CH2CH- Examples of alkylene of 4 to 12 carbon atoms interrupted with -0-, p. ex. 1,2 or 3 -0-, are 3-oxapentane-1,5-diyl, 4-oxaheptane-l, 7-diyl, 3,6-dioxaoctane-l, 8-diyl, 4,7-dioxadecan-l , 10-diyl, 4, -dioxadodecan-1, 12-diyl, 3,6,9-trioxaundecan-1, 11-diyl and 4, 7, 10-trioxatridecan-1, 13-diyl. Examples of alkylene of 4 to 12 carbon atoms interrupted with > N-X1 are: -CHjjCHjCHj-NÍ -CHjCHj-NtX -CHaCHaCHj-, in particular -CH2CH2CH2-N (CH3) -CH2CH2-N (CH3) -CH2CH2CH2-. An example of a cycloalkylene- of 5 to 7 carbon atoms -di (alkylene of 1 to 4 carbon atoms) is methylenecyclohexylene methylene. Examples of alkylene- of 1 to 4 carbon atoms -di (cycloalkylene of 5 to 7 carbon atoms), are cyclohexylene-methylene cyclohexylene and cyclohexylene-isopropylidene-cyclohexylene.

An example of phenylendi (alkylene of 1 to 4 carbon atoms) is methylene-phenylene methylene. R3 is preferably hydrogen, alkyl of 1 to 4 carbon atoms, -OH, alkoxy of 6 to 12 carbon atoms, cycloalkoxy of 5 to 8 carbon atoms, allyl, benzyl or acetyl, in particular hydrogen, alkyl of 1 to 4 carbon atoms or cycloalkoxy of 5 to 8 carbon atoms, for example hydrogen, methyl or cyclohexyloxy. Z is preferably a group of formula (Illa) with R5, R6 and R7 being hydrogen. m is preferably zero or 1. R2 and Z are preferably identical. Preferred compounds of formula (I) are those in which the radicals R? they are independently of one another, hydrogen, alkyl of 1 to 4 carbon atoms, cycloalkyl of 5 to 8 carbon atoms unsubstituted or substituted by methyl; or a group of formula (II) with the proviso that at least one of the radicals Rx is a group of formula (II); R 4, R 3 and R 9 are independently from each other alkyl of 1 to 4 carbon atoms or cyclohexyl; Rs, R6 and R7 are hydrogen; m is zero or an integer from 1 to 3; R 2 has one of the meanings given for Z or is alkylene of 2 to 8 carbon atoms, cyclohexylene, methylene-cyclohexylene-methylene, cyclohexylene-methylene-cyclohexylene or methylene-phenylene-methylene-Rio / Rn and R ?. independently of one another, hydrogen, alkyl of 1 to 8 carbon atoms, cycloalkyl of 5 to 8 carbon atoms unsubstituted or substituted by methyl; alkenyl of 3 to 8 carbon atoms, phenyl unsubstituted or substituted by methyl; benzyl, tetrahydrofurfuryl or alkyl of 2 to 3 carbon atoms substituted in the 2 or 3 position by -OH, alkoxy of 1 to 4 carbon atoms, dimethylamino, diethylamino or 4-morpholinyl; or -N (R1: L) (R12) is further 4-morpholinyl; R 14 is hydrogen, alkyl of 1 to 8 carbon atoms, cycloalkyl of 5 to 8 carbon atoms unsubstituted or substituted by methyl; benzyl, tetrahydrofurfuryl, a group of formula (II) or alkyl of 2 to 3 carbon atoms substituted in the 2 or 3 position with -OH, alkoxy of 1 to 4 carbon atoms, dimethylamino, diethylamino or 4-morpholinyl. Particularly preferred compounds of formula (I) are those in which the radicals R x are independently of one another, hydrogen, alkyl of 1 to 4 carbon atoms, cyclohexyl or a group of formula (II) with the proviso that at least one of radicals Rx is a group of formula (II); Z is a group of formula (Illa); R 4 is alkyl of 1 to 4 carbon atoms; Rs < Rs and R7 are hydrogen; m is zero or 1; R2 has one of the meanings given for Z or is alkylene of 2 to 8 carbon atoms; A is -NYR ^) (R12) or a group of formula (IV); Rn and Ri2 are independently of one another, hydrogen, alkyl of 1 to 8 carbon atoms, cyclohexyl, phenyl, benzyl. tetrahydrofurfuryl, 2-hydroxyethyl or 2-methoxyethyl; or -NÍR ^) (R12) is additionally 4-morpholinyl; X2 is > N-R14; R14 is hydrogen, alkyl of 1 to 8 carbon atoms, cyclohexyl, benzyl, tetrahydrofurfuryl, a group of formula (II), 2-hydroxyethyl or 2-methoxyethyl. Compounds of formula (I) which are of interest are those wherein n is 1 or 2 the radicals Rx are a group of formula (II); Z is a group R2 has one of the meanings given for Z; R3 is hydrogen, alkyl of 1 to 4 carbon atoms or cycloalkoxy of 5 to 8 carbon atoms; A is -NYR ^) (R12) or a group of formula (IV); R and R12 are independently from each other alkyl of 1 to 4 carbon atoms; X2 is > N-R14; and R14 is alkyl of 1 to 4 carbon atoms. The compounds of formula (I) can be prepared, for example, according to the methods shown below.

METHOD A: When R2 has the same meaning as Z and the radicals E and E 'have the same meanings, a compound of formula (VII! (il) it can be prepared, for example, by the reaction of a compound of formula (VIII) with an appropriate molar amount of a compound of formula (IX).

N- • H a -a N ^ N a (HIV) (IX) In more detail, when n is 1, a compound of formula (VII) can be prepared, for example, according to scheme A-1. Scheme A-l: (VIII) (IX) (X) (X) (IX) (VII-1) When n is 2, a compound of formula (VII) can be prepared, for example, according to scheme A-2 Scheme A-2: a) H N- • H + 2 a - ^ - a R. a (VIII) (IX) (XI) (XI) (VIII) (XII) to (XII) (IX) (VII-2) When n is 3, a compound of formula (VII) can be prepared, for example, according to scheme A-3. Scheme A-3 (VII-1) (viii) (XIII) (XII I) (IX) (VII-3) When n is 4, a compound of formula (VII) can be prepared, for example, according to scheme A-4. Scheme A-4: (VII-2) (HIV) (XIV) (XIV) (IX) (VII-4) Next, the compounds of the formulas (VII-1), (Vll-2), (VII-3) and (VII-4), are reacted with the appropriate molar amounts of the compounds of the formula (XV) and / or (XVI) AH (XV) EH (XVI) to obtain the corresponding compounds of formula (I) • METHOD B: When R2 has the same meaning as Z, the radical E * is different from the radicals E and the radical E * is also different from the group of formula (VI), the compounds of formula (X), (XII), (XIII) and (XIV), depending on the value of n = 1, 2, 3 or 4 respectively, are prepared first according to METHOD A, as described above.

Therefore, these compounds are reacted with the appropriate molar amounts of the compounds of formula (XVII) E * -H (XVII) to give the compounds of formula (XVIII) (XVIII) with n being 1, 2, 3 or 4, respectively. Next, the compounds of formula (XIII) are reacted with the appropriate molar amounts of the compound of formula (IX) or (XIX) a- N ~ A (XIX) E to obtain the corresponding quantities of formula (XX) or (I).

(XX) with n being 1, 2, 3 or 4, respectively. When the compounds of formula (XX) are obtained, these compounds are then reacted with the appropriate molar amounts of the compounds of formula (XV) and / or (XVI) to give the corresponding compounds of formula (I). The compounds of formula (XIX) can be prepared using well-known synthesis procedures, for example, by reacting the compound of formula (IX) with the appropriate molar amounts of the compounds of formula (XV) and / or (XVI). METHOD C: When R2 has the same meaning as Z and the radical E * is a group of formula VI, the compounds of formula (X), (XII), (XIII) and (XIV), depending on the value of n = 1, 2, 3 or 4, respectively, are prepared first according to METHOD A as described above. Next, these compounds are reacted with the appropriate molar amounts of the compounds of formula (VIII) to give the compounds of formula (XXI) H N-Z- Z N- -H (XXI) n with n being 1, 2, 3 or 4, respectively. Next, the compounds of formula (XXI) are reacted with the appropriate molar amounts of the compound of formula (IX) or (XIX), to obtain the corresponding compounds of formula (XXII) or (I).

When the compounds of formula (XXII) are obtained, these compounds are subsequently reacted with the appropriate molar amounts of the compounds of formula (XV) and / or (XVI) to give the corresponding compounds of formula (I). METHOD D: When R2 is different from Z or at least one of the radicals R2 - in the repeated units (n = 2, 3 or 4) of the compounds of formula (I) - is different from Z, the compounds of formula (XXIII) (XXIII) E are prepared first by reacting the compounds of formula (XIX) with the equivalent molar amounts, or an excess, of the compounds of formula (XXIV). H N-R.-N H (XXIV) Next, the compounds of formula (XXIII) are reacted with the appropriate molar amounts of the compounds of formula (XXV) and (XXIV) analogously to the method described for example in EP-A-782 994 to give the compounds of formula (XXVI) Next, when E * has the same meaning as E, the compounds of formula (XXVI) are reacted with the appropriate molar amounts of the compounds of formula (XXVII) (XXVII) E = E- * to give the compounds of formula (XXVIII) XXVIII) Next, the compounds of formula (XXVIII) are reacted with the molar amounts of the compounds of formula (XV) to give the corresponding compounds of formula (I). When E * is different from E, the compounds of formula (XXVI) are reacted with the appropriate molar amounts of the compounds of formula (XXV) to give the compounds of formula (XXIX).

Next, the compounds of formula (XXIX) are reacted with the appropriate molar amounts of the compounds of formula (XXIII) to give the corresponding compounds of formula (I). Alternatively, the compounds of formula (XXIX) are reacted with the appropriate molar amounts of the compounds of formula (VIII) and then with the appropriate molar amounts of the compounds of formula (XIX) to give the corresponding compounds of formula (I) . Alternatively again, the compounds of formula (XXIX) are reacted with the appropriate molar amounts of the compounds of formula (VIII) and then with the appropriate molar amounts of the compounds of formula (IX) to give the compounds of formula (XXX).

Next, the compounds of formula (XXX) are reacted with the appropriate molar amounts of the compounds of formula (XV) and / or (XVI) to give the corresponding compounds of formula (I). The compounds of formula (XXV) can be prepared using well known synthesis processes, for example, by reacting the compound of formula (IX) with the appropriate molar amounts of the compounds of formula (XVII). The various reactions described above are advantageously carried out in an inert organic solvent, for example toluene, xylene or mesitylene, in the presence of an inorganic base such as sodium hydroxide, potassium hydroxide, sodium carbonate or potassium carbonate to neutralize the hydrazide formed during the reactions. Sodium hydroxide is preferred. The working temperatures of the reactions can vary, for example, from -20 ° C to 200 ° C, preferably from -10 ° C to 190 ° C, in particular from -10 ° C to 20 ° C for the substitution of the first atom of chlorine of cyanuryl chloride; from 40 ° C to 90 ° C for the substitution of the second chlorine atom of cyanuryl chloride; and from 90 ° C to 190 ° C for the substitution of the third chlorine atom of cyanuryl chloride. In the processes described above, the reactions between the compounds of formula (VII), (XX), (XXII), (XXVIII), (XXIX) or (XXX) and the compounds of formula (XV) and / or (XVI) ) can also be carried out in a pure state, without mixing. In such a case, the compounds of formula (XV) and / or (XVI) are used in a large excess to neutralize the hydrazide formed during the reactions. The various steps of the reactions can be carried out in a single reactor and in the same reaction medium, without isolating the intermediates or the reactions can be carried out after separation and, when appropriate, after the purification of the intermediates. The reagents used are commercially available or can be prepared according to known processes. The diamine starting materials of formula (VIII) and (XXIV) can be prepared, for example, analogously to the method described in EP-A-33 663 and US-A-4 526 972, and taking into account Chemical Abstracts 72:32 718 t, 75: 130 747 h and 83: 194 575 y. The compounds of formula (I) are very effective in increasing the resistance to light, heat and oxidation of organic materials, especially synthetic polymers and copolymers, in particular polypropylene fibers. Examples of organic materials that can be stabilized Oll: l. Polymers of monoolefins and diolefins, for example polypropylene, polyisobutylene, polybut-1-ene, poly-4-methyl-pent-1-ene, polyisoprene or polybutadiene, as well as polymers of cycloolefins, for example of cyclopentene or norbornene, polyethylene (which optionally it can be crosslinked), for example high density polyethylene (HDPE), high density polyethylene and high molecular weight (HDPE-HMW), high density polyethylene and super molecular weight (HDPE-UHMW), medium density polyethylene (MDPE) ), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), (VLDPE) and (ULDPE). The polyolefins, namely the polymers of monoolefins exemplified in the preceding paragraph, preferably polyethylene and polypropylene, can be prepared by different methods, and in particular by the following: a) polymerization of the radicals (usually at very high pressure and high temperature). b) catalytic polymerization using a catalyst that normally contains one, or more than one metal, of groups IVb, Vb or VIII of the periodic table. These metals usually have one, or more than one ligand, typically oxides, halides, alcoholates, esters, ethers, amines, alkyls, alkenyls and / or aryls, which may be either TG- or S-coordinated. These metal complexes can be in free form or fixed on substrates, of which magnesium chloride, titanium (III) chloride, alumina or silicon oxide are typical. These catalysts can be soluble or insoluble in the polymerization medium. The catalysts can be used by themselves in the polymerization or other activators can be used, of which metal alkyls, metal hydrides, alkylmetal halides, metal alkyl oxides or metal alkyloxanes are typical, said metals being elements of the groups la, lia and / or Illa of the periodic table. The activators can be conveniently modified with more ester, ether, amine or silyl ether groups. These catalytic systems commonly receive the names of Phillips catalysts, Standard Oil Indiana, Ziegler (-Natta), TNZ (Du Pont), metallocene or single position catalysts (SSC). 2. Mixtures of the polymers mentioned in 1), for example mixtures of polypropylene with polyisobutylene, polypropylene with polyethylene (for example PP / HDPE, PP / HDPE) and mixtures of different types of polyethylene (for example LDPE / HDPE). 3. Copolymers of mono olefins and diolefins with one another or with other vinyl monomers, for example ethylene / propylene copolymers, linear low density polyethylene (LLDPE) and mixtures thereof with low density polyethylene (LDPE), propylene / butyl copolymers 1-ene, propylene / iso-butylene copolymers, ethylene / but-1-ene copolymers, ethylene / hexene copolymers, ethylene / methylpentene copolymers, ethylene / heptene copolymers, ethylene / octene copolymers, propylene-nobutadiene copolymers, copolymers isobutylene / isoprene, ethylene / alkyl acrylate copolymers, ethylene / alkylmethacrylate copolymers, ethylene / vinyl acetate copolymers, and their copolymers with carbon monoxide or ethylene / acrylic acid copolymers and their salts (ionomers) as well as terpolymers of ethylene with propylene and a diene such as hexadiene, dicyclopentadiene or ethylidene norbornene, and mixtures of such copolymers with each other and with the polymers mentioned in 1) above, for example polypropylene / ethylene-propylene copolymers, LDPE / ethylene-vinyl acetate (EVA) copolymers, LDPE / ethylene-acrylic acid (EAA) copolymers, LLDPE / EVA, LLDPE / EAA and polyalkylene / carbon monoxide random or alternating copolymers, and mixtures thereof with other polymers, for example, polyamides. 4. Hydrocarbon resins (for example from 5 to 9 carbon atoms), including • hydrogenated modifications thereof (eg tack modifiers) and mixtures of polyalkylenes and starch. 5. Polystyrene, poly (p-methylstyrene), poly (α-methylstyrene). 6. Copolymers of styrene or α-methylstyrene with dienes or acrylic derivatives, for example styrene / butadiene, styrene / acrylonitrile, styrene / alkyl methacrylate, styrene / bu-tadiene / alkyl acrylate, styrene / butadiene / alkyl methacrylate, styrene / maleic anhydride, styrene / acrylonitrile / methyl acrylate, - blends of high impact resistance of styrene-flake copolymer and another polymer, for example a poly-acrylate, a diene polymer or an ethylene-no / propylene / diene terpolymer; and styrene block copolymers such as styrene / butadiene / styrene, styrene / isoprene / styrene, styrene / ethylene / butylene / styrene or styrene / ethylene / propylene / styrene. 7. Graft, styrene or α-methylstyrene copolymers, for example styrene on polybutadiene, styrene on polybutadiene-styrene or polybutadiene-acrylonitrile copolymers; styrene and acrylonitrile (or methacrylonitrile) on polybutadiene; styrene, acrylonitrile and methyl methacrylate on polybutadiene; styrene and maleic anhydride on polybutadiene; styrene, acrylonitrile and maleic anhydride or maleimide on polybutadiene; styrene and maleimide on polybutadiene; styrene and alkyl acrylates or methacrylates on polybutadiene; styrene and acrylonitrile on ethylene / propylene / diene terpolymers; styrene and acrylonitrile on polyalkyl acrylates or polyalkyl methacrylates, styrene and acrylonitrile on acrylate / butadiene copolymers, as well as mixtures thereof with the copolymers listed in 6), for example mixtures of copolymers known as ABS, MBS, ASA or AES polymers. 8. Halogen-containing polymers such as polychloroprene, chlorinated rubbers, chlorinated or brominated copolymer of isobutylene-isoprene (halobutyl rubber), chlorinated or sulfochlorinated polyethylene, copolymers of ethylene and chlorinated ethylene, homo and epichlorohydrin copolymers, especially polymers of vinyl compounds containing halogen, for example polyvinyl chloride, polyvinylidene chloride, polyvinyl fluoride, polyvinylidene fluoride, as well as copolymers thereof such as the copolymers vinyl chloride / vinylidene chloride, vinyl chloride / vinyl acetate or vinylidene chloride / vinyl acetate. 9. Polymers derived from ex, β-unsaturated acids and derivatives thereof such as polyacrylates and polymethacrylates; polymethyl methacrylates, polyacrylates and polyacrylonitriles, modified for high impact with butyl acrylate. 10. Copolymers of the monomers mentioned in 9) with each other or with other unsaturated monomers, for example acrylonitrile / butadiene copolymers, acrylonitrile / alkyl-acrylate copolymers, acrylonitrile / alkoxyalkyl acrylate or acrylonitrile / vinyl halide copolymers or acrylonitrile / alkyl methacrylate / terpolymers butadiene. 11. Polymers derived from unsaturated alcohols and amines or the acyl derivatives or acetals thereof, for example, pvivinyl alcohol, polyvinyl acetate, polyvinyl stearate, polyvinyl benzoate, polyvinyl maleate, polyvinyl butyral, polyallyl phthalate or polyallylamine; as also their olefin copolymers mentioned in 1) above. 12. Homopolymers and copolymers of cyclic ethers such as polyalkylene glycols, polyethylene oxide, polypropylene oxide or copolymers thereof with bis-glycidi-diesters. 13. Polyacetals such as polyoxymethylene and those polyoxymethylenes containing ethylene oxide as co-monomer; polyacetals modified with thermoplastic polyurethanes, acrylates or MBS. 14. Polyphenylene oxides and sulphides, and mixtures of polyphenylene oxides with styrene polymers or polyamides.

. Polyurethanes derived from polyethers with hydroxylated ends, polyesters or polybutadienes on the one hand and aliphatic or aromatic polyisocyanates on the other side, as well as precursors thereof. 16. Polyamides and copolyamides derived from diamines and dicarboxylic acids and / or aminocarboxylic acids or the corresponding lactams, for example polyamide 4, polyamide 6, polyamide 6/6, 6/10, 6/9, 6/12, 4 / 6, 12/12, polyamide 11, polyamide 12, aromatic polyamides from m-xylene diamine and adipic acid; polyamides prepared from hexamethylenediamine and phthalic acid and / or terephthalic acid and with or without an elastomer as a modifier, for example poly-2,4,4-trimethylhexamethylene terephthalamide or poly-m-phenylene iso-phthalamide; and also block copolymers of the aforementioned polyamides with polyolefins, copolymers of olefins, ionomers or chemically bonded or grafted elastomers; or with polyethers p. ex. with polyethylene glycol, polypropylene glycol or polytetramethylene glycol; as well as polyamides or copolyamides modified with EPDM or ABS; and condensed polyamides during processing (RIM polyamide systems). 17. Polyureas, polyimides, polyamide-imides, polyether-imides, polyesterimides, polyhydantoins and polybenzimidazoles. 18. Polyesters derived from dicarboxylic acids and diols and / or from hydroxycarboxylic acids or the corresponding lactones, for example polyethylene terephthalate, polybutylene terephthalate, poly-l, 4-dimethylolcyclohexane terephthalate and polyhydroxybenzoates, as well as block copolyether esters derived from polyethers with hydroxylated ends; and also polyesters modified with polycarbonates or MBS. 19. Polycarbonates or polyester carbonates. 20. Polysulfones, polyether sulfones and polyether ketones. 21. Crosslinked polymers derived from aldehydes on the one hand and phenols, ureas and melamines on the other hand, such as phenol / formaldehyde resins, urea / formaldehyde resins and melamine / formaldehyde resins. 22. Drying and non-drying alkyd resins. 23. Unsaturated polyester resins derived from copolymers of saturated and unsaturated dicarboxylic acids with polyvalent alcohols and vinyl compounds as crosslinking agents, and also halogen-containing modifications thereof, of low flammability. 24. Crosslinkable acrylic resins derived from substituted acrylates, for example epoxy acrylates, urethane acrylates or polyester acrylates. 25. Alkyd resins, polyester resins and acrylate resins cross-linked with melamine resins, urea resins, isocyanates, isocyanurates, polyisocyanates or epoxy resins. 26. Cross-linked epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic or aromatic glycidyl compounds, p. ex. products of diglycidyl ethers of bisphenol A and bisphenol F, which are crosslinked with customary hardeners such as anhydrides or amines, with or without accelerators. 27. Natural polymers such as cellulose, rubber, gelatin and chemically modified homologous derivatives thereof, for example cellulose acetates, cellulose propionates and cellulose butyrates, or cellulose ethers such as methyl cellulose; as well as the colophonies and their derivatives. 28. Mixtures of the aforementioned polymers (polyblends), for example PP (EPDM), polia ida / EPDM or ABS, PVC / EVA, PVC / ABS, PVC / MBS, PC / ABS, PBT / ABS, PC / ASA, PC / PBT; PVC / CPE, PVC / acrylates, POM / PUR thermoplastic, PC / PUR thermo-plastic, POM / acrylate, POM / MBS, PPO / HIPS, PPO / PA 6,6 and copolymers, PA / HDPE, PA / PP, PA / PPO, PBT / PC / ABS or PBT / PET / PC. 29. Organic materials present in nature and synthetic, which are purely monomeric compounds or mixtures of said compounds, for example mineral oils, fats, oils and animal and vegetable waxes, or oils, fats and waxes based on synthetic esters (eg phthalates) , adipates, phosphates or trimethylates) and also mixtures of synthetic esters with mineral oils in any proportion of weights, being typical those used in spinning compositions, as well as aqueous emulsions of such materials. 30. Aqueous emulsions of natural or synthetic rubber, e.g. ex. natural latex or latex of carboxylated styrene / butadiene copolymers. The invention thus also relates to a composition comprising an organic material susceptible to degradation induced by light, heat or oxidation and at least one compound of formula (I). The organic material is preferably a synthetic polymer, more particularly one selected from the aforementioned groups. Polyolefins are preferred and polyethylene and polypropylene are particularly preferred.

Another version of this invention is a method for the stabilization of an organic material against degradation induced by light, heat or oxidation, which comprises the incorporation into said organic material of at least one compound of formula (I). The compounds of formula (I) can be used in various proportions depending on the nature of the material to be stabilized, the end use and the presence of other additives. In general, it is appropriate to employ, for example, 0.01 to 5% by weight of the compounds of formula (I), with respect to the weight of the material to be stabilized, preferably 0.05 to 2%, in particular, 0.05 to 1%. The compounds of formula (I) can be added, for example to the above polymeric materials, during or after the polymerization or cross-linking of said materials. In addition, they can be incorporated into polymeric materials in pure form or encapsulated in waxes, oils or polymers. In general, the compounds of formula (I) can be incorporated into polymeric materials by various methods, such as dry mixing in the form of powder, or wet mixing in the form of solutions or suspensions or else in the form of a masterbatch containing the compounds of formula (I) in a concentration of 2.5 to 25% by weight; in such operations, the polymer can be used in the form of powder, granules, solutions, suspensions or in the form of latex. The materials stabilized with the compounds of formula (I) can be used for the production of castings, films, magnetic tape, monofilaments, fibers, surface coatings and the like. If desired, other conventional additives can be added for synthetic polymers, such as antioxidants, UV absorbers, nickel stabilizers, pigments, fillers, plasticizers, corrosion inhibitors and metal deactivators, to organic materials containing the compounds of formula ( I). Particular examples of said conventional additives are: 1. Antioxidants' 1.1. Alkylated monophenols, for example, 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6- di-tert-butyl-4-n-bu ilphenol, 2,6-di-tere-bu il-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2- (ot-methylcyclohexyl) -4,6- dimethylphenol, 2,6-di-octadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, nonylphenols which are linear or branched in the side chains, for example 2 , 6-di-nonyl-4-ylphenol, 2,4-dimethyl-6- (1 '-methylundec-1'-yl) phenol, 2,4-dimethyl-6- (1'-methylheptadec-1' - il) phenol, 2,4-dimethyl-6- (1'-methyltridec-1'-yl) phenol and mixtures thereof. 1.2. Alkyltiomethylphenols. for example 2,4-dioctyl-thiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ylphenol, 2, 6-di-dodecyl iomethyl-4-nonylphenol. 1.3. Hydroquinones and alkylated hydroquinones, for example 2,6-di-tere-bu il-4-methoxyphenol, 2,5-di-tere-butyl-hydroquinone, 2,5-di-tert.-hydroquinone, 2,6-diphenyl- 4-oc-tadecyloxyphenol, 2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, stearate of 3, 5 di-tert-butyl-4-hydroxyphenyl, bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) adipate. 1.4. Tocopherols, for example, ce-tocopherol, 0-tocopherol,? -tocopherol, d-tocopherol and mixtures thereof (vitamin E). 1. 5. Hydroxylated thiodiphenylethers. for example, 2,2'-thiobis- (6-tert-butyl-4-methylphenol), 2,2'-thiobis- (4-octylpheno-nol), 4,4'-thiobis- (6-tert-butyl) -3-methylphenol), 4,4'-thiobis- (6-tere-butyl-2-methylphenol), 4,4'-thiobis- (3,6-di-sec-amylfe-nol), 4, 4 ' bis (2,6-dimethyl-4-hydroxyphenyl) disulfide. 1.6. Alkylidenebisphenols. for example, 2,2 '-methylene-bis- (6-tert-butyl-4-methylphenol), 2,2'-methylenebis (6-tert-butyl-4-ethylphenol), 2,2'-methylenebis [4] -methyl-6- (a-methyl-clohexyl) -phenol], 2, 2'-methylenebis (4-methyl-6-cyclohexyl-phenol), 2,2'-methylenebis (6-nonyl-4-methylphenol), 2, 2'-methylenebis (4,6-di-tert-butylphenol), 2,2'-ethylidebis (4,6-di-tert-butylphenol), 2,2'-ethylidebis (6-tere .butyl-4) iso-bu-tylphenol), 2,2'-methylenebis [6- (a-methylbenzyl) -4-nonylphenol], 2,2'-methylenebis [6- (, ar-dimethylbenzyl) -4-nonylphenol], , 4'-methylenebis (2,6-di-tert-butylphenol), 4,4'-methylenebis (6-tert-butyl-2-methylphenol), 1,1-bis (5-tert-butyl-4-hydroxy) - 2-methyl-phenyl) butane, 2,6-bis- (3-tert-butyl-5-methyl-2-hydroxybenzyl) -4-methylphenol, 1, 1,3-tris (5-tert-butyl-4) -hydroxy-2-methylphenyl) -butane, 1,1-bis- (5-tert-butyl-4-hydroxy-2-methyl-phenyl) -3-n-dodecyl mercaptobutane, ethylene glycol bis- [3, 3- bis- (3'-tert-butyl-4'-hydroxyphenyl) butyrate], bis- (3-terebutyl-4-hydroxy-5-methylphenyl) -d iciclopentadiene, bis [2- (3'-tert-butyl-2'-hydroxy-5'-methylbenzyl) -6-tert-butyl-4-methyl-phenyl] terephthalate, 1,1-bis- (3, 5- dimethyl-2-hydroxy-enyl) -butane, 2,2-bis- (3,5-di-tert-butyl-4-hydroxyphenyl) propane, 2,2-bis- (5-tert-butyl-4-hydroxy-2) -methylphenyl) -4- n -dodecylmercaptobutane, 1,1,5,5-tetra- (5-tert-butyl-4-hydroxy-2-methylphenyl) pentane. 1.7. O-, N- and S -benzyl compounds. for example 3,5,3 ', 5'-tetra-tert-butyl-4,4'-dihydroxy-dibenzylether, octadecyl-4-hydroxy-3,5-dimethylbenzylmercaptoacetate, tridecyl-4-hydroxy-3 > 5-di-tert-butylbenzylmercaptoacetate, tris (3,5-di-tert-butyl-4-hydroxybenzyl) amine, bis (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) dithioterephthalate, bis (3, 5-di-tert-butyl-4-hydroxybenzyl) sulfide, isooctyl-3,5-di-tert-buyl-4-hydroxybenzylmercaptoacetate. 1.8. Hydroxybenzylated malonates. for example diocta-decyl-2,2-bis- (3, 5-di-tert-butyl-2-hydroxybenzyl) -malonate, di-octadecyl-2 - (3-tert-butyl-4-hydroxy-5-methylbenzyl) ) -malonate, di-dodecyl mercaptoethyl-2, 2-bis- (3, 5-di-tert-butyl-4-hydroxybenzyl) malonate, bis [4- (1,1,3,3-tetramethylbutyl) phenyl] -2 , 2-bis (3, 5-di-tert-butyl-4-hydroxybenzyl) malonate. 1.9. Aromatic hydroxybenzyl compounds, for example 1,3,5-tris- (3,5-di-tert-butyl-4-hydroxybenzyl) -2,4,6-trimethylbenzene, 1,4-bis (3,5-di) -tert-butyl-4-hydroxybenzyl) -2,3,5,6-tetramethylbenzene, 2,4,6-tris (3,5-di-tere-butyl-4-hydroxybenzyl) phenol. 1. 10. Triazine compounds. for example 2, 4-bis (octyl-mercapto) -6- (3, 5-di-tere -bu il-4-hydroxyanilino) -1,3,5-triazine, 2-octylmercapto-4,6-bis ( 3, 5-di-tert-butyl-4-hydroxyanilino) -1,3,5-triazine, 2-octylmercapto-4,6-bis (3,5-di-tert-butyl-4-hydroxyphenoxy) - 1, 3, 5-triazine, 2,4,6-tris (3,5-di-tert-butyl-4-hydroxyphenoxy) -1,2,3-triazine, 1, 3, 5-tris- (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, 1, 3, 5-tris (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) isocyanurate, 2,4,6-tris (3, 5-di-tert-butyl-4-hydroxyphenylethyl) -1,3,5-triazine, 1, 3,5-tris (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) -hexahydro-1,3, 5-triazine, 1,3, 5-tris (3,5-dicyclohexyl-4-hydroxybenzyl) isocyanurate. 1.11. Benzylphosphonates, for example dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-3,5-di-tert-butyl-4- hi-droxybenzylphosphonate, dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, calcium salt of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester. 1.12. Acylaminophenols for example 4-hydroxyanilide of lauric acid, 4-hydroxyanilide of stearic acid, octyl ester of N- (3, 5-di-tert-butyl-4-hydroxyphenyl) carbamic acid. 1.13. Esters of ß- (3,5-di-tert-butyl-4-hydroxy-phenyl) -propionic acid with monovalent or polyvalent alcohols, p. ex. : methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propane-diol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) ) isocyanurate, N, N'-bis (hydroxyethyl) oxalic acid oxamide, 3-thia-undecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-l-phospha-2, 6,7-trioxabicyclo [2.2 .2] octane. 1.14. Esters of ß- (5-tert-butyl-4-hydroxy-3-methylphenyl) -propionic acid with monovalent or polyvalent alcohols, e.g. ex. : with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris ( hydroxyethyl) isocyanurate, N, N'-bis (hydroxyethyl) oxalic acid oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo [2. 2. 2] -octane. 1.15. Esters of ß- (3,5-dicyclohexyl-4-hydroxy-phenyl) -propionic acid with monovalent or polyvalent alcohols, p. ex. : methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, acid oxamide N, N'-bis (hydroxyethyl) oxalic, 3-thiaundecanol, 3-thia-pentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-l-phospha-2,6,7-trioxabicyclo [2.2.2] octane. 1.16. Esters of 3,5-di-tert-butyl-4-hydroxyphenyl acetic acid with monovalent or polyvalent alcohols, p. ex. : methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N-oxamide, N '-bis (hydroxyethyl) oxalic, 3-thiaundecanol, 3-thiapenta-decanol, trimethylhexanediol, trimethylolpropane, 4-hydroxy-methyl-l-phospha-2,6,7-trioxabicyclo [2.2.2] octane. 1.17. Amides of ß- (3,5-di-tert-butyl-4-hydroxy-phenyl) propionic acid. p. ex. : N, N'-bis (3,5-di-tert-butyl-4-hi-droxyphenylpropionyl) hexamethylenediamide, N, N'-bis (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) trimethylenediamide, N , N'-bis (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) -hydrazide, N, N'-bis [2- (3- [3, 5-di-tert-butyl-4-hydroxyphenyl]] propionyloxy) ethyl] oxamide (Naugard®XL-1 supplied by Uniroyal). 1.18. Ascorbic acid (vitamin C) 1.19. Antioxidant aminos. for example N, N '-di-iso-propyl-p-phenylenediamine, N, N' -di-sec-butyl-p-phenylenediamine, N, N'-bis (1,4-dimethylpentyl) -p-phenylenediamine, N, N'-bis (1-ethyl-3-methylpentyl) -p-phenylenediamine, N, N'-bis (1-methylheptyl) - p-Phenylenediamine, N, N '-dicyclohexyl-p-phenylenediamine, N, N'-di-phenyl-p-phenylenediamine, N, N' -bis (2-naphthyl) -p-phenylenediamine, N-isopropyl-N ' -phenyl-p-phenylenediamine, N- (1,3-dimethylbutyl) -N'-phenyl-p-phenylenediamine, N- (1-methylheptyl) -N'-phenyl-p-phenylenediamine, N-cyclohexyl-N '-phenyl-p-phenylenediamine, 4- (p-toluenesulfamoyl) diphenylamine, N, N' -dimethyl-N, N '-di-sec-butyl-p-phenylenediamine, diphenylamine, N-allyldiphenylamine, 4-isopro-poxydiphenylamine , N-phenyl-1-naphthylamine, N- (4-tert-octyl-phenyl) -l-naphthylamine, N-phenyl-2-naphthylamine, occylated diphenylamine, for example, p, p '-di-tert- octyldiphenylamine, 4-n-butylaminophenol, 4-butyrylaminophenol, 4-nonanoylaminophenol, 4-dodecanoylaminophenol, 4-octadecanoylaminophenol, bis (4-methoxy-phenyDamine, 2,6-di-tert-butyl-4-dimethylaminomethylphenol, 2,4 ' -diaminodiphenylmethane, 4,4'-diaminodiphenylmethane, N, N, N ', N'-tetram ethyl-4,4'-diaminodiphenylmethane, 1,2-bis [(2-methylphenyl) amino] ethane, 1,2-bis (phenylamino) propane, (o-tolyl) biguanide, bis [4- (1 ', 3 '-dimethylbutyl) phenyl] amine, tert-octylated N-phenyl-1-naphthylamine, a mixture of mono- and dialkylated tert-butyl / tert-octyldiphenyl-amines, a mixture of mono- and dialkylated nonildiphenylamines, a mixture of mono- and dialkylated dodecyldiphenylamines , a mixture of mono and dialkylated isopropyl / isohexyldiphenylamines; a mixture of mono- and dialkylated tert-butyldiphenylamines, 2, 3-dihydro-3, 3-dimethyl-4H-1, 4-benzo-thiazine, phenothiazine, a mixture of tert-butyl / tert-octyl-phenothiazines mono- and dialkylated, a mixture of mono- and dialkylated tert-octyl-phenothiazines, N-allylphenothiazine, N, N, N ', N'-tetraphenyl-1,4-diaminobut-2-ene, N, -bis (2,2,6,6) -tetramethyl-piperid-4-yl-hexamethylenediamine, bis (2,2,6,6-tetramethyl-piperid-4-yl) sebacate, 2, 2, 6,6-tetramethylpiperidin-4-one, 2, 2 , 6,6-tetramethylpiperidin-4-ol 2. UV absorbers and light stabilizers 2.1 2- (2'-Hydroxyphenyl) -benzotriazoles, for example, 2- (2'-hydroxy-5 '- methylphenyl) -benzotriazole, 2- (3 ', 5'-di-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (5'-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'- hydroxy-5 '- (1,1,3,3-tetramethylbutyl) phenyl) benzotriazole, 2- (3', 5'-di-tert-butyl-2'-hydroxyphenyl) -5-chloro-benzotriazole, 2 - (3 '-tert-butyl-2' -hydro-xi-5 '-methylphenyl) -5-chloro-benzotriazole, 2- (3'-s) ec-butyl-5'-tert-butyl-2 '-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-4'-octyloxyteneDbenzotriazole, 2- (3', 5'-di-tert-amyl-2'-hydroxyphenyl) ) benzotriazole, 2- (3 ', 5'-bis- (a, a-dimethylbenzyl) -2'-hydroxyphenyl) benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5' - (2- octyloxycarbonylethyl) phenyl) -5-chloro-benzotriazole, 2- (3'-tert-butyl-5 '- [2- (2-ethylhexyloxy) -carbonylethyl] -2'-hydroxyphenyl) -5-chloro-benzotriazole, 2- (3 '-tert -butyl-2'-hydroxy-5' - (2-methoxycarbonylethyl) phenyl) -5-chloro-benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-methoxycarbonylethyl) phenyl) benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-octyloxycarbonyl-ethyl) phenyl) benzotriazole, 2- (3'-tert-butyl-5' - [2- (2-ethylhexyloxy) carbonylethyl] -2'-hydroxyphenyl) benzotriazole, 2- (3 '-do-decyl-2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (3'-methyl) -butyl-2 '-hydroxy-5' - (2-isooctyloxycarbonylethyl) phenylbenzothiazole, 2,2'-me ilen-bis [4- (1, 1, 3, 3-tetramethylbutyl) -6-benzotriazole-2- ilfenol]; the product of the transesterification of 2- [3'-tert-butyl-5 '- (2-methoxycarbonylethyl) -2'-hydroxyphenyl] -benzotriazole with polyethylene glycol 300; [R-CH2CH2-COO-CH2CH2-t * wherein R = 3 '-tert-butyl-4' -hydroxy-5'-2H-benzotriazol-2-yl-phenyl, 2- [2'-hydroxy-3 ' - (, α-dimethylbenzyl) -5 '- (1, 1,3,3-te-tramethylbutyl) -phenyl] benzotriazole; 2- [2 '-hydroxy-3' - (1,1,3,3-tetramethylbutyl-5 '(, a-dimethylbenzyl) -phenyl] benzotriazole 2.2.-2-hydroxybenzophenones, for example, 4-hydroxyl derivatives, 4-methoxy, 4-octyloxy, 4-decyloxy, 4-dodecyl-oxyl, 4-benzyloxy, 4, 2 ',' -trihydroxyl and 2'-hydroxy-4,4'-dimethoxy. 2.3. Esters of substituted and unsubstituted benzoic acids, such as, for example, 4-tert-butylphenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoylresorcinol, bis- (4-tert-butylbenzoyl) resorcinol, benzoylresorcinol, 3, 5 2,4-di-tert-butyl-4-hydroxybenzoate 2,4-di-tert-butylphenyl, 3,5-di-tert-butyl-4-hydroxybenzoate hexadecyl, 3, 5-di-tert-butyl-4-hydroxybenzoate octadecyl -lo, 2-methyl-4,6-di-tert-butylphenyl, 3, 5-di-tert-butyl-4-hydroxybenzoate. 2.4. Acrylates, for example, a-cyano- / ?, / ethyl 3-diphenylacrylate, ac ± an-β, iso-octyl-diphenylacrylate, methyl a-carbo-methoxycinnamate, α-cyano-α-methyl-p- methyl methoxy cinnamate, butyl a-cyano-β-methyl-p-methoxy-cinnamate, methyl ct-carbomethoxy-p-methoxycinnamate and N- (β-carbomethoxy- / 3-cyanovinyl) -2-methylindoline. 2.5. Nickel compounds, for example, 2, 2'-thio-bis- [4- (1,1,3,3-tetramethylbutyl) -phenol] nickel complexes, such as the 1: 1 or 1: 2 complexes, optionally with or without additional ligands such as p. ex. n-butylamine, triethanolamine or N-cyclohexyldiethanolamine, nickel dibutyldiiocarbamate, nickel salts of monoalkyl esters p. ex. the methyl or ethyl ester of 4-hydroxy-3,5-di-tert-butyl-benzylphosphonic acid, nickel complexes of ketoximes, p. ex. of 2-hydroxy-4-methylphenyl-undecylketoxime, nickel complexes of l-phenyl-4-lauroyl-5-hydroxypyrazole, with or without additional ligands. 2.6. Amines sterically inhibited, for example, bis (2, 2, 6,6-tetramethyl-4-piperidyl) sebacate, bis (2, 2, 6,6-tetramethyl-4-piperidyl) succinate, bis abacate (1,2, 2, 6, 6-pentamethyl-4-piperidyl), bis (l-octyloxy-2, 2,6,6,6-tetramethyl-4-piperidyl) sebacate, n-butyl-3,5-di -tert-butyl-4-hydroxybenzylmalonate bis (1, 2, 2, 6, 6-pentamethyl-4-piperidyl), condensation product of 1- (2-hydroxyethyl) -2, 2, 6, 6 -tetramethyl-4-hydroxypiperidine and succinic acid, linear or cyclic condensation product of N, N'-bis (2, 2, 6, 6-tetramethyl-4-piperidyl) hexamethylenediamine and 4-tert-octylamino-2 , 6-dichloro-1,3,5-triazine, tris- (2,2,6,6-tetramethyl-4-piperidyl) nitrilotriacetate, tetrakis- (2,2,6,6-tetramethyl-4-piperidyl) - 1,2,3,4-butane-tetracarboxylate, 1,1 '- (1,2-ethanediyl) -bis (3,3,5,5-tetramethylpiperazinone), 4-benzoyl-2, 2, 6 , 6-tetramethylpiperidine, 4-stearyloxy-2, 2, 6, 6-te-tramethylpiperidine, bis (1, 2, 2, 6, 6-pentamethylpiperidi) l) -2-n-butyl-2- (2-hydroxy-3,5-di-tert-butylbenzyl) malonate, 3-n-oc-tyl-7,7,9,9-tetramethyl-1,3, 8-triazaspiro [4.5] decan-2,4-dione, bis (l-octyloxy-2, 2,6,6-tetramethylpiperidyl) sebacate, bis (1-octyloxy-2, 2,6,6-tetramethylpiperidyl) succinate , linear or cyclic condensation product of N, N'-bis- (2, 2, 6,6-tetra-methyl-4-piperidyl) hexamethylenediamine and 4-morpholino-2,6-di-chloro-1,3 , 5-triazine, the condensation product of 2-chloro-4,6-bis (4-n-butylamino-2, 2,6,6-tetramethylpiperidyl) -1,3,5-triazine and 1,2-triazine bis (3-aminopropylamino) ethane, the condensation product of 2-chloro-4,6-di- (4-n-butylamino-1,2,6,6-pentamethyl-piperidyl) -1,3 , 5-triazine and 1,2-bis (3-aminopropylamino) ethane, 8-acetyl-3-dodecyl-7, 7, 9, 9-tetra-methyl-1,3,8-triazaspiro [4.5] decane- 2,4-dione, 3-dodecyl-1- (2, 2, 6, 6-tetramethyl-4-piperidyl) pyrrolidin-2, 5-dione, 3-do-decyl-1- (1, 2.2, 6, 6-pentamethyl-4-piperidyl) pyrrolidin-2, 5-dione, a mixture of 4-hexa decyloxy- and 4-stearyloxy-2, 2,6,6-tetramethylpiperidine, a condensation product of N, N'-bis (2, 2, 6,6-tetramethyl-4-piperidyl) hexamethylenediamine and 4-cyclohexylamino -2,6-dichloro-1,3,5-triazine, a condensation product of 1,2-bis (3-aminopropylamino) ethane and 2,4,6-trichloro-1,3,5-triazine as well as 4-butylamino-2, 2, 6, 6-te-tramethylpiperidine (CAS Reg. No. [136504-96-6]); N- (2,2,6,6-tetramethyl-4-piperidyl) -n-dodecyl succinimide, N- (1, 2, 2, 6, 6-pentamethyl-4-piperidyl) -n-dodecyl succinimide, 2-undecyl- 7, 7, 9, 9-tetrathylene-l-oxa-3, 8-diaza-4-oxo-spiro [4, 5] decane, a reaction product of 7, 7, 9, 9-tetramethyl-2-cycloundecyl -l-oxa-3, 8-diaza-4-oxospiro [4, 5] decane and epichlorohydrin, 1,1-bis (l, 2,2,6, 6-pentamethyl-4-piperidyloxycarbonyl) -2- ( 4-methoxyphenyl) ethene, N, N'-bis-formyl-N, N'-bis (2,2,6,6-tetra-methyl-4-piperidyl) hexamethylenediamine, 4- ethoxymethylene-malonic acid diester with 1, 2, 2, 6, 6-pentamethyl-4-hydroxy-piperidine, poly [methylpropyl-3-oxy-4- (2, 2, 6, 6-tetramethyl-4-piperidyl)] siloxane, reaction product of maleic an α-olefin copolymer with 2, 2, 6, 6-tetramethyl-4-aminopiperidine or 1, 2, 2, 6, 6-pentamethyl-4-aminopiperidine. 2.7. Oxamides for example, 4, '-dioctyloxyoxanilide, 2,2' -dietoxyoxanilide, 2,2 '-dioctyloxy-5, 5'-di-tert-butoxa-nilide, 2,2'-didodecyloxy-5, 5'-di- tert-butoxyanilide, 2-ethoxy-2'-ethyloxanilide, N, N'-bis (3-dimethylaminopropyl) -oxamide, 2-ethoxy-5-tert-butyl-2'-ethoxyanilide and its mixture with 2-ethoxy -2'-ethyl-5,4 '-di-tert-butoxyanilide, mixtures of o- and p-methoxy-disubstituted oxanilides and mixtures of disubstituted o- and p-ethoxy-oxanilides. 2. 8. 2- (2-hydroxyphenyl-1,3-triazines, for example 2, 4, 6-tris- (2-hydroxy-4-octyloxyphenyl) -1,3,5-triazine, 2- (2-hydroxy) 4-octyloxyphenyl) -4,6-bis (2,4-dimethyl-phenyl) -1,3,5-triazine, 2- (2,4-dihydroxyphenyl) -4,6-bis (2,4-dimethylphenyl) - 1, 3, 5-triazine; 2,4-bis (2-hydroxy-4-propyloxyphenyl) -6- (2,4-dimethylphenyl) -1,3,5-triazine, 2- (2-hydroxy-4-) octyloxyphenyl) -4,6-bis (4-methylphenyl) -1,3,5-triazine, 2- (2-hydroxy-4-dode-cyloxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1 , 3, 5-triazine, 2- (2-hydroxy-4-tridecyloxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2-hydroxy-4- ( 2-hydroxy-3-butyloxy-propoxy) phenyl] -4,6-bis (2,4-dimethyl) -1,3,5-triazine, 2- [2-hydroxy-4- (2-hydroxy-3- octyloxy-propyloxy) phenyl] -4,6-bis (2,4-dimethyl) -1,3,5-triazine, 2- [4- (dodecyloxy / tridecyloxy-2-hydroxypropoxy-2-hydroxy-phenyl) ] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2-hydroxy-4- (2-hydroxy-3-dodecyloxy-propoxy) phenyl] -4,6- bis (2,4-dimethylphenyl) -1,3,5-tr iazine, 2- (2-hydroxy-4-hexyl-oxy) phenyl-4,6-diphenyl-1,3,5-triazine, 2- (2-hydroxy-4-methoxy-phenyl) -4,6-diphenyl -l, 3, 5-triazine, 2,4,6-tris [2-hydroxy-4- (3-butoxy-2-hydroxy-propoxy) phenyl] -1,3,5-triazine, 2- (2- hi-droxyphenyl) -4- (4-methoxyphenyl) -6-phenyl-1,3,5-triazine, 2-. { 2-hydroxy-4- [3- (2-ethylhexyl-1-oxy) -2-hydroxypropyloxy] phenyl} -4,6-bis [2,4-dimethylphenyl] -1,3,5-triazine. 3. Metal deactivators, for example, N, N'-diphenyl-oxalic acid oxamide, N-salicylal-N '-salicyloylhydrazine, N, N'-bis (salicyloyl) hydrazine, N, N'-bis (3, 5-di-tert-butyl-4-hydroxyphenyl-propionyl) hydrazine, 3-salicyloylamino-1, 2,4-triazole, bis (benzylidene) oxalyl dihydrazide, oxa-nilide, isophthaloyl dihydrazide, sebacoyl bisphenyl hydrazide , N, N'-diacetyladipoyl dihydrazide, N, N'-bis (salicyloyl) oxalyl dihydrazide, N, N'-bis (salicyloyl) thiopropionyl dihydrazide. 4. Phosphites and phosphonites. for example, triphenyl phosphite, diphenyl alkyl phosphites, phenyl dialkyl phosphites, tris (nonyl phenyl) phosphite, trilauryl phosphite, trioctadecyl phosphite, di-stearyl pentaerythritol diphosphite, tris (2,4-di-tert-butyl-phenyl) phosphite, diisodecylpentaerythritol diphosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-methylphenyl) -pentaerythritol diphosphite, diisodecyloxy-pentaerythritol diphosphite, bis (2,4-di- tert-butyl-6-methylpheneyl) pentaerythritol diphosphite, bis (2,4,6-tris (tert-butyl-phenyl) pentaerythritol diphosphite, tristearyl sorbitol triphosphate, tetrakis (2,4-di-tert-butylphenyl) 4, 4'-biphenylenediphosphoni-to, 6-isooctyloxy-2, 4,8, 10-tetra-tere-butyl-12H-dibenz [d, g] -1, 3, 2-dioxaphosphocin, 6-fluoro-2, 4, 8, 10-tetra-tert-butyl-12-methyl-di-benz [d, g] -1, 3, 2-dioxaphosphocin, bis. {2, 4-di-tert-butyl-6-methylphenyl ) methyl phosphite, bis (2,4-di-tert-butyl-6-methyl-phenyl) ethyl phosphite, 2, 2 ', 2"-nitrile [triethyltris (3, 3, 5, 5' -tetra-tert- butyl-1, 1 '-bifen il-2, 2'-diyl) phosphite], 2-ethyl-hexyl (3, 3 ', 5, 5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl) phosphite. 5. Hydroxylamines. for example, N, N-dibenzylhydroxylamine, N, N-diethylhydroxylamine, N, N-dioctylhydroxylamine, N, N-dilaurylhydroxylamine, N, N-ditetradecylhydroxylamine, N, N-dihexadecylhydroxylamine, N, -dioctadecylhydroxylamine, N-hexadecyl- N-octadecylhydroxylamine, N-heptadecyl-N-octade-cylhydroxylamine, N, N-dialkylhydroxylamine derived from the hydrogenated tallow amine. 6. Nitrones. for example, N-benzyl-alpha-phenyl nitrona, N-ethyl-alpha-methyl-nitrona, N-octyl-alpha-heptyl-nitrone, N-lauryl-alpha-undecyl-nitrone, N-tetradecyl-alpha-tridecyl- ni-trona, N-hexadecyl-alpha-pentadecyl-nitrone, N-octadecyl-alpha-heptadecyl-nitrone, N-hexadecyl-alpha-heptadecyl-nitrone, N-octadecyl-alpha-pentadecyl-nitrone, N-heptadecyl-alpha- hepta-decyl-nitrona, N-octadecyl-alpha-hexadecyl-nitrone, nitrone derived from N, N-dialkylhydroxylamine derived from the hydrogenated tallow amine. 7. Tiosinéraicos. for example, dilau-ryl thiodipropionate or distearyl thiodipropionate. 8. Destroyers of peroxides, for example, the esters of ß-thiodipropionic acid, for example the esters of lauryl, stearyl, myristyl or tridecyl, mercaptobenzimidazole or the zinc salt of 2-mercaptobenzimidazole, zinc dibutyl-dithiocarbamate, dioctadecyl disulfide, pentaerythritol tetrakis (ß- dodecyl mercapto) propionate. 9. Polyamide stabilizers. for example, copper salts in combination with iodides and / or phosphorus compounds and salts of divalent manganese. 10. Basic co-stabilizers, for example, melamine, polyvinyl pyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes, alkali metal salts and alkaline earth metal salts of higher fatty acids, for example calcium stearate , zinc stearate, magnesium behenate, magnesium stearate, sodium ricinoleate and potassium palmitate, antimony pyrocatecholte or zinc pyrocatecholte. 11. Nucleation agents. for example, inorganic substances such as talc, metal oxides such as titanium dioxide or magnesium oxide, phosphates, carbonates or sulfates of, preferably, alkaline earth metals; organic compounds such as mono or polycarboxylic acids and the salts thereof, e.g. ex. 4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium suc-cinate or sodium benzoate; polymeric compounds such as ionic copolymers (ionomers). 12. Bulking and reinforcing agents, for example, calcium carbonate, silicates, glass fibers, glass beads, asbestos, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, carbon black, graphite, sawdust and flours or fibers of other natural products, synthetic fibers. 13. Other additives, for example, plasticizers, lubricants, emulsifiers, pigments, rheological additives, catalysts, flow control agents, optical brighteners, flameproofing agents, antistatic agents and propellants. 14. Benzofuranones or indolinones. for example, those described in U.S. 4,325,863, U.S. 4,338,244, U.S. 5,175,312, U.S. 5,216,052, U.S. 5,252,643, DE-A-4316611, DE-A-4316622, DE-A-4316876, EP-A-0589839 or EP-A-0591102 or 3- [4- (2-acetoxyethoxy) phenyl] -5, 7-di-tert-butyl-benzofuran-2-one, 5,7-di-tert-butyl-3- [4- (2-stearoyloxyethoxy) phenyl] benzofuran-2-one, 3,3'-bis [5] , 7-di-tert-butyl-3- (4- [2-hydroxyethoxy] phenyl) benzofuran-2-one], 5,7-di-tert-butyl-3- (4-ethoxyphenyl) benzo-furan-2 -one, 3- (4-acetoxy-3, 5-dimethylphenyl) -5,7-di-tert-bu-L 1 -benzo-Luran-2-one, 3- (3,5-dimethyl-4-pivaloyloxyphenyl) - 5,7-di-tere-butyl-benzofuran-2-one, 3- (3,4-dimethylphenyl) -5,7-diter-butyl-benzofuran-2-one, 3- (2,3-dimethylphenyl) , 7-di-tert-butyl-benzofuran-2 -one. The weight ratio of the compounds of formula (I) and conventional additives can be, for example, from 1: 0.5 to 1: 5. The compounds of formula (I) can also be used as stabilizers, especially as light stabilizers, for almost all materials known in the art of photographic reproduction and other reproduction techniques such as p. ex. the one described in Research Disclosure 1990, 31429 (pages 474 to 480). The invention is explained in more detail in the following examples. All percent are expressed by weight, unless otherwise indicated. The compounds of the following examples 1, 2, 3, 4 and 8 are of particular interest. Example 1: A) Preparation of N, N'-bis (2, 2, 6, 6-tetramethyl-4-piperidyl) -1,3-pentanediamine. C2H5 A solution of 80.7 g (780 mmoles) of 1,3-pentanediamine and 220 g (1417 mmoles) of 2, 2, 6, 6-tetramethyl-4-piperidone in 250 ml of ethanol at 80 ° C is heated. The reaction mixture is kept under stirring at 80 ° C for 2 hours. The solution is then poured into an autoclave, 4 g of 5% Pt / C (% by weight) are added and the autoclave is pressurized with hydrogen. The mixture is heated to 60 ° C and the pressure is maintained at 40 bars for 20 hours. The mixture is then cooled to room temperature, filtered and the solvent evaporated in vacuo (40 ° C / 1 mbar). The residue in the form of an oil is distilled off. The product obtained has a boiling point of 160 ° C / 0.1 mbar. B) Preparation of the compound of formula A solution of 8.1 g (44 mmol) of cyanuryl chloride in 80 ml of xylene is added slowly to a solution cooled to -10 ° C of 50 g (131 mmol) of N, N'-bis (2). , 2,6,6-tetramethyl-4-piperidyl) -1,3-pentanediamine in 500 ml of xylene. After the addition, the mixture is heated to 0 ° C and a solution of 5.8 g (144 mmol) of sodium hydroxide in 12 ml of water is added. The mixture is then heated to room temperature and kept at this temperature for 1 hour while stirring. Next, the mixture is heated to reflux and the added water and the water of reaction are removed by azeotropic distillation. Then the mixture is heated to 170 ° C, and 300 ml of xylene are removed by distillation. The mixture is maintained at 170 ° C for 3 hours. The mixture is then cooled to room temperature and washed twice with 50 ml of water. The organic phase is separated, dried with anhydrous sodium sulfate, filtered and evaporated under vacuum (50 ° C / 1 mbar). The melting point of the product obtained is 75 ° -79 ° C. Analysis of C72H141N1S Calculated: C: 71.06% H: 11.68% N: 17.26% Found: C: 70.02% H: 11.45% N: 17,09 XH NMR (300 MHz, CDC13) : d 2.6 ppm (width, 3H C) Preparation of the compound of formula A solution of 24.1 g (130 mmol) of cyanuryl chloride in 240 ml of xylene is slowly added to a solution cooled to 0 ° C of 54.3 g (43 mmol) of the compound prepared according to B) in 200 ml. ml of xylene. After the addition, the mixture is stirred at room temperature for 20 hours. Then, a solution of 5.2 g (130 mmol) of sodium hydroxide in 20 ml of water is added. The mixture is kept at room temperature for 2 hours with stirring. The mixture is then washed twice with 100 ml of water, dried over anhydrous sodium sulfate, filtered and evaporated under vacuum (40 ° C / 1 mbar). Cl analysis: Calculated: Cl: 12.81% Found: Cl: 12.70% D) Preparation of the compound of formula A mixture of 23 g (14 mmol) of the compound prepared according to C) in 126 g (593 mmol) of N- (2, 2, 6, 6-tetramethyl-4-piperidyl) butylamine is heated to 180 ° C . The reaction mixture is maintained at 180 ° C for 5 hours. The mixture is then cooled to 60 ° C and 230 ml of xylene are added. A solution of 6.7 g (166 mmol) of sodium hydroxide in 40 ml of water is added. The aqueous phase is separated and the organic solution is washed twice with 100 μl of water, dried over sodium sulfate, filtered and evaporated under vacuum (70 ° C / 1 mbar). The melting point of the product obtained is 184-194 ° C. Analysis for ClsH304N36: Calculated: C: 70.35% H: 11.06% N: 18.58% Found: C: 69.59% H: 10.88% N: 18.14% Example 2: Preparation of the compound of formula A solution of 37 g (201 mmol) of cyanuryl chloride in 370 ml of toluene is added slowly to a solution cooled at -10 ° C to 153 g (401 mmol) of N, N'-bis (2, 2 , 6,6-tetramethyl-4-piperidyl) -1,3-pentanediamine in 1100 ml of toluene. During the addition, the temperature is maintained at -10 ° C. Next, the mixture is heated to room temperature and kept, stirring, at room temperature for 3 hours. The mixture is then cooled to 0 ° C and a solution of 32 g (802 mmoles) of sodium hydroxide in 64 ml of water is added. After the addition, the mixture is heated again to room temperature, kept stirring at room temperature for 12 hours, heated to 80 ° C and maintained at 80 ° C for 3 hours. The mixture is then cooled to room temperature, and the aqueous phase is separated. A solution of 74.1 g (402 mmol) of cyanuric chloride in 700 ml of toluene is slowly added to the mixture and cooled to 0 ° C. After the addition, the mixture is heated to room temperature and maintained at room temperature, with stirring, for 24 hours. A solution of 16.1 g (402 mmol) of sodium hydroxide in 75 ml of water is added, and the mixture is stirred at room temperature for another 4 hours. Then, the aqueous phase is separated, the organic phase is washed twice with 100 ml of water and the toluene is evaporated under vacuum (70 ° c / 1 mbar). Then, 1344 g (6.3 moles) of N- (2, 2,6,6-tetramethyl-4-piperidyl) butylamine are added, and the mixture is heated to 180 ° C and maintained at 180 ° C with stirring , for 5 hours. The mixture is cooled to 60 ° C and 300 ml of toluene are added. A solution of 60 g (1.50 mol) of sodium hydroxide in 150 ml of water is added, and after stirring, the aqueous phase is separated. The organic solution is washed twice with 200 ml of water, dried over anhydrous sodium sulfate, filtered and evaporated in vacuo (70 ° C / 1 mbar). The melting point of the product obtained is 173 ° -178 ° C.

Analysis for C120H227N27: Calculated: C: 70.42% H: 11.10% N: 18.48% Found: C: 70.01% H: 11.07% N: 18.21% Example 3: Preparation of the compound of formula A solution of 36.8 g (200 mmol) of cyanuryl chloride in 370 ml of toluene is slowly added to a solution, cooled at -10 ° C, of 153 g (401 mmol) of N, N'-bis (2 , 2,6,6-tetramethyl-4-piperidyl) -1,3-pentanediamine in 1100 ml of toluene. During the addition, the temperature is maintained at -10 ° C. Next, the mixture is heated to room temperature and kept, stirring, at room temperature for 3 hours. The mixture is cooled to 0 ° C and a solution of 32 g (800 mmol) of sodium hydroxide in 64 ml of water is added. After the addition, DT stirred the cluran mixture for 12 hours at room temperature, heated to 80 ° C and maintained at 80 ° C for 3 hours. The mixture is then cooled to room temperature, and the aqueous phase is separated. A solution of 73.8 g (400 mmol) of cyanuric chloride in 690 ml of toluene is slowly added to the organic mixture cooled to 0 ° C. The mixture is then heated to room temperature and maintained under stirring at the above temperature for 24 hours. A solution of 16 g (400 mmol) of sodium hydroxide in 75 ml of water is added, and the mixture is stirred at room temperature for a further 4 hours. The aqueous phase is separated and the organic phase is washed twice with 100 ml of water. Then a solution of 51.7 g (400 mmol) of dibutylamine in 100 ml of toluene is slowly added and, after 1 hour of stirring at room temperature, a solution of 32 g (800 mmol) of sodium hydroxide is added. sodium in 100 ml of water. Next, the mixture is heated at 80 ° C for 2 hours, cooled again to room temperature and the aqueous phase is separated. The organic phase is washed twice with 100 ml of water and the toluene is evaporated under vacuum (70CC / 1 mbar). The residue is treated with 1560 g (7.3 moles) of N- (2, 2,6,6-tetramethyl-4-piperidyl) butylamine, and heated to 180 ° C. The mixture is then maintained, with stirring, at 180 ° C for 5 hours. After cooling to 60 ° C, 800 ml of toluene are added. Then a solution of 24 g (600 mmol) of sodium hydroxide in 130 ml of water is added and the aqueous phase is separated. After washing twice with 300 ml of water, the organic phase is dried with anhydrous sodium hydroxide, filtered and evaporated in vacuo (70 ° C / 1 mbar).

The product obtained has a melting point of 132 ° 139 ° C. Analysis for C110H209N25: Calculated: C: 69.40% H: 10.95% N: 19.65% Found: C: 69.25% H: 11.09% N: 19.08% Example 4: Preparation of the compound of formula A mixture of 60.1 g (36 mmol) of the compound prepared according to Example IB in 400 g (3 moles) of N- (2, 2, 6, 6-tetramethyl-4-piperidyl) butylamine is heated to 180 ° C and maintained at 180 ° C for 5 hours. The mixture is then cooled to 60 ° C and 200 ml of toluene are added. A solution of 17.2 g (432 mmol) of sodium hydroxide in 100 ml of water is added and the organic phase is separated. After washing twice with 200 ml of water, the organic solution is dried with anhydrous sodium sulfate, filtered and evaporated under vacuum (70 ° C / 1 mbar). The product obtained has a point of function cio 148o-152 ° C.

Analysis for C144H273N33: Calculated: C: 70.16% H: 11.08% N: 18.76% Found: C: 69.32% H: 11.08% N: 18.61% Example 5: Preparation of the compound of formula A mixture of 40 g (20 mmol) of the compound of Example 2 in 400 ml of cyclohexane is heated to reflux. Then, 0.2 g of Mo03 is added. 116 g (890 mmol) of a 70% aqueous solution (% w / w) of t-butyl hydroperoxide are added slowly. Another 0.2 g of Mo03 are added and the water is removed by azeotropic distillation. After removing the water, the mixture is heated to 125 ° C in a pressure-resistant flask and kept at 125 ° C for 4 hours. The mixture is then cooled to 50 ° C and the Mo03 is filtered off. The organic solution is stirred with a solution of 25 g (190 mmol) of sodium sulfite in 100 ml of water for 1 hour and washed twice with 100 ml of water. The organic solution is then dried with anhydrous sodium sulfate, filtered and evaporated under vacuum (40 ° C / 1 mbar).

The product obtained has a melting point of 177o-187 ° C. Analysis for C175H321N27029: Calculated: C: 71.30% H: 10.83% N: 12.91% Found: C: 71.29% H: 10.90% N: 12.90% Example 6: Preparation of the compound of formula A solution of 5 g (13 mmol) of N, N'-bis (2,2,6,6-tetramethyl-4-piperidyl) -1,3-pentanediamine in 30 ml of toluene is added slowly to a cooled solution of 0 ° C of 4.8 g (26 mmoles) of cyanuric chloride in 70 ml of toluene: During the addition, the mixture is heated to room temperature and kept at room temperature for 1 hour with stirring. The mixture is then cooled to 0 ° C and a solution of 2 g (42 mmol) of sodium hydroxide in 4 ml of water is added. The mixture is warmed again at room temperature, kept under stirring at room temperature for an additional 1 hour, and 50 ml of toluene and 10 ml of water are added. After stirring for 10 hours, the organic phase is washed twice with 50 ml of water. A solution of 5.4 g (14 mmol) of N, N'-bis (2,2,6,6-tetramethyl-4-piperidyl) -1,3-pentanedi-amine in 50 ml of toluene is added slowly to the solution, it is cooled to 0 ° C. After the addition, the mixture is heated to room temperature and maintained at room temperature for 1 hour. Then, a solution of 1.1 g (29 mmol) of sodium hydroxide in 3 ml of water is added and the mixture is heated to 80 ° C. The mixture is maintained at 80 ° C for a further 5 hours, with stirring. After cooling to room temperature, the mixture is washed with water. A solution of 2.2 g (12 mmol) of cyanuric chloride in 22 ml of toluene is added slowly to a solution, cooled to 0 ° C. After the addition, the mixture is heated at room temperature and maintained at room temperature for 14 hours. A solution of 0.5 g (12 mmol) of sodium hydroxide in 1 ml of water is added and the mixture is stirred for 1 hour. After washing twice with 50 ml of water, the organic phase is evaporated under vacuum (40 ° C / 1 mbar) and the residue is treated with 42.5 g (200 mmol) of N- (2, 2, 6, 6-tetramethyl-4-piperidyl) butylamine. Then, the mixture is heated to 180 ° C and maintained at 180 ° C for 5 hours with stirring. After cooling to 60 ° C, a solution of 2.6 g (65 mmol) of sodium hydroxide in 6 ml of water is added. The mixture is stirred for 1 hour, 60 ml of toluene are added, washed twice with 50 ml of water, dried over anhydrous sodium sulfate, filtered and evaporated under vacuum (70 ° C / 1 mbar). The product obtained has a melting point of 176o-186 ° C. Analysis for C159H300N36: Calculated: C: 70.35% H: 11.06% N: 18.58% Found: C: 68.59% H: 10.90% N: 18.10% Example 7: Preparation of the compound of formula The product is prepared analogously to the method described in example 2, using the appropriate reagents in the appropriate molar proportions. The product obtained has a melting point of 185 o- 192 ° C. Analysis for C116H219N27: Calculated: C: 69.98% H: 11.01% N: 19.00% Found: C: 68.35% H: 10.88% N: 18.70% Example 8: Preparation of the compound of formula A mixture of 20 g (8.1 mmol) of the compound of Example 4 in 200 ml of t-amyl alcohol and 6.6 g (218 mmol) of paraformaldehyde is heated with stirring at 80 ° C. Next, 4.3 g (93 mmol) of formic acid are added over a period of 15 minutes and allowed to react for 2 hours. The mixture is cooled to 25 ° C and a solution of 4.46 g (111 mmol) of sodium hydroxide in 50 ml of water is added with stirring and left to react for 30 minutes. The organic layer is washed with water until neutral reaction. The solvent is evaporated under vacuum (50 ° C / 1 mbar), yielding 19.5 g of a pale yellow solid. The product obtained has a melting point of 165 o-175 ° C. Analysis for C153H291N33: Calculated: C: 70.92% H: 11.80% N: 17.84% Found; C: 70.16% II: 11, 241 N. J7,! Üt Example A: Stabilizing action against light in polypropylene fibers. 2.5 g of a stabilizer in Table 1, 1 g of tris (2,4-di-tert-butylphenyl) phosphite, 1 g of calcium salt of 3,5-di-tert-butyl-4 are mixed. -monoethyl monohydroxybenzyl phosphonate, 1 g of calcium stearate and 2.5 g of titanium dioxide in a slow mixer with 1000 g of polypropylene powder with a melt index of 12 g / 10 minutes (measured at 230 ° C and 2.16 kg). The mixtures are extruded at 200-230 ° C to obtain polymer granules that are then converted into fibers using a pilot type apparatus (®Leonard-Sumirago (VA), Italy) and operating under the following conditions: Temperature of l? extruder: 230-245 ° C Head temperature: 255-260 ° C Draw ratio: 1: 3.5 Line density: 11 dtex per filament The fibers prepared in this way are exposed, after mounting on a white board, in a Rather-O-Meter (ASTM D2565-85) with a black temperature panel of 63 ° C for samples taken after several times of exposure to light, the residual tenacity is measured using a constant speed tensometer and then the exposure time is calculated in hours necessary to halve the initial tenacity (T50). For purposes of comparison, fibers prepared under the same conditions as described above are also exposed, but without the addition of the stabilizers of the present invention. The results are summarized in table 1. Table 1 Stabilizer T50 (hours) Without stabilizer 250 Compound of example 1 2030 Compound of example 2 2230 Compound of example 3 1940 Compound of example 4 2030 Compound of example 7 2720 Compound of example 8 1860 Example B: Stabilizing action against light in polypropylene tapes. 1 g of a stabilizer from Table 2, 1 g of tris (2,4-di-tert-butylphenyl) phosphite, 0.5 g of pentaerythritol-tetrakis [3- (3,5-di-tert-butyl) are mixed. -4-hydroxyphenyl) propionate] and 1 g of calcium stearate, in a turbomixer with 1000 g of polypropylene powder with a melt index of 2.1 g / 10 minutes (measured at 230 ° C and 2.16 kg) . The mixtures are extruded at 200-220 ° C to give polymer granules that are then converted into stretched tapes of 50 μm thick and 2.5 mm wide, using a semi-industrial type apparatus (®Leonard-Sumirago (VA) -Italia) and working in the following conditions: Extruder temperature: 210-230 ° C Head temperature: 240-260 ° C Drafting ratio: 1: 6 The tapes prepared in this way are mounted on a white cardboard and exposed in a 65 WR Weather-O-Meter (ASTM D2565-85) with a black temperature panel of 63 ° C. Residual tenacity is measured using a constant velocity tensometer in a sample taken after several times of exposure to light; from them, the exposure time (in hours) necessary to halve the initial tenacity (Tso) is measured. For comparative purposes, tapes prepared under the same conditions as described above are exposed, but without the addition of the stabilizers of the present invention. The results obtained are summarized in table 2. Table 2 Stabilizer T50 (hours) Without stabilizer 500 Compound of example 1 2090 Compound of example 2 2210 Compound of example 3 2000 Compound of example 4 1980 Compound of example 7 2310 Compound of example 8 1840 Example C: Antioxidant action in polypropylene plates. 1 g of each of the components of table 3 and 1 g of calcium stearate are mixed in a slow mixer with 1000 g of polypropylene powder with a melt index of 4.3 (measured at 230 ° C and 2 ° C). , 16 kg).

The mixtures are extruded at 220 ° C to give polymer granules which are then converted into 1 mm thick plates by injection molding at 220 ° C. The plates are then perforated with a punch DIN 53451 and the samples obtained are exposed in a forced draft oven maintained at a temperature of 135 ° C. The samples are checked at regular intervals by bending them 180 ° in order to determine the time (days) necessary to fracture them. The results obtained are summarized in table 3. Table 3 Stabilizer Fracture time (days) Without stabilizer 10 Compound of example 1 70 Compound of example 2 86 Compound of example 3 67 Compound of example 4 81 Compound of example 8 70 Example D: Interaction of a pigment in polypropylene plates. 5.625 g of a stabilizer from table 4, 13.500 g of blue pigment 15"Flush" (50% mixed with polyethylene) and 25.875 g of polypropylene powder (with a melting index of approximately 14 measured at 230 ° C and 2.16 kg), they are added to load an internal mixer ®Haake at room temperature (®Haake Buchler Rheochord System 40 using 3 pieces Rheomixer of 60 ce with paddles of cams). The cam blades rotate at 5 rpm (revolutions per minute). A gate closes the container under a weight of 5 kg. The temperature is increased to 180 ° C and maintained at 180 ° C. The total time is 30 minutes. The mixture is removed at 180 ° C after 30 minutes, and cooled to room temperature. The mixture thus obtained, which is called "concentrate", will be used later. 0.900 g of this concentrate, 3,600 g of titanium dioxide "Flush" (50% mixture in polyethylene), and 40,500 g of polypropylene powder (with a melting index of approximately 14 measured at 230 ° C and 2, are added). 16 kg) to the container of a ®HAAKE mixer at 160 ° C. The cam blades rotate at 20 rpm. A gate closes the container under a weight of 5 kg. The temperature is increased to 170 ° C and the rpm is increased to 125. The total time is' 30 minutes. The molten mixture is removed at 170 ° C, transferred to a tool held by hand at room temperature and made into a round plate of 1 mm x 25 mm in diameter. The mixture thus obtained receives the name of "letdown" and the plate, the one of "letdown plate". The color difference, delta E (equation of the CIÉ color difference), of the letdown plate of the sample containing the stabilizer of table 4 is measured compared to a letdown plate without the stabilizer. The measurement is made using the Applied Color Systems spectrophotometer mo-délo CS-5 (USA). The measurement parameters used are 400 - 700 nm, small area vision, reflectance, illuminated D65, 10 degree observer.

The above processing conditions are designed to simulate the manufacture of concentrates (masterbatch) of pigments and stabilizers and the subsequent let-down (dilution) in finished plastic articles. A high delta E indicates a pigment agglomeration and a poor dispersion. A difference of 0.5 in delta E is not appreciated by the human eye. Table 4 Delta E Stabilizer Compound of Example 2 0.2 *****

Claims

CLAIMS A compound of formula (I) where n is an integer from 1 to 4; the radicals R x are independently of one another, hydrogen, alkyl of 1 to 8 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, unsubstituted or substituted by 1, 2 or 3 alkyls of 1 to 4 carbon atoms; or a group of formula (II), with the proviso that at least one of the radicals Rt is a group of formula (II); R3 is hydrogen, alkyl of 1 to 8 carbon atoms, 0", -OH, -CH2CN, alkoxy of 1 to 18 carbon atoms, cycloalkoxy of 5 to 12 carbon atoms, alkenyl of 3 to 6 carbon atoms, phenylalkyl from 7 to 9 carbon atoms unsubstituted or substituted in the phenyl with 1, 2 or 3 alkyls of 4 carbon atoms or acyl of 1 to 8 carbon atoms; Z is a group of formula (Illa) or (Illb); - -CH "- (Illa) (Hlb) R 4, R 3 and R 9 are independently of each other, alkyl of 1 to 4 carbon atoms or cycloalkyl of 5 to 12 carbon atoms unsubstituted or substituted by 1, 2 or 3 alkyls of 1 to 4 carbon atoms, - R 5, R 6 and R7 are independently from each other, hydrogen or alkyl of 1 to 4 carbon atoms; m is zero or an integer from 1 to 6; p is 1 or 2; R2 has one of the meanings given for Z or is alkylene of 2 to 12 carbon atoms, cycloalkylene of 5 to 7 carbon atoms, cycloalkylene of 5 to 7 carbon atoms-di (alkylene of 1 to 4 carbon atoms), alkylene of 1 to 4 carbon atoms-di (cycloalkylene of 5 to 7 carbon atoms), phenylene-di. { alkylene of 1 to 4 carbon atoms) or alkylene of 4 to 12 carbon atoms interrupted with 1,4-piperazinodiyl, -0- or > N-XX, where Xx is acyl of 1 to 12 carbon atoms or (alkoxy of 1 to 8 carbon atoms) carbonyl or having one of the meanings given for Rt except hydrogen; the radicals A are independently from each other -0R10, -N (R1X) (R12) or a group of formula (IV) Rio »Rn and Ri2 are independently hydrogen, alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 12 carbon atoms unsubstituted or substituted by 1, 2 or 3 alkyls of 1 to 4 carbon atoms, - alkenyl of 3 to 12 carbon atoms, phenyl unsubstituted or substituted by 1, 2 or 3 alkyls of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, phenylalkyl of 7 to 9 carbon atoms unsubstituted or substituted phenyl with 1, 2 or 3 alkyls of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, -tetrahydrofurfuryl or: alkyl of 2 to 4 carbon atoms substituted in the 2, 3 or 4 position with -OH , alkoxy of 1 to 8 carbon atoms, di (alkyl of 1 to 4 carbon atoms) amino or a group of formula (V): AND N (V) where Y, -O-, -CH2-, -CH2CH2- or > N-CH3; or -N (RU) (R12) is additionally a group of formula (V); R13 has one of the meanings given for R3; X2 is -O- or > N-R14; R 14 is hydrogen, alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 12 carbon atoms unsubstituted or substituted by 1, 2 or 3 alkyls of 1 to 4 carbon atoms, phenylalkyl of 7 to 9 carbon atoms unsubstituted or substituted in the phenyl with 1, 2 or 3 alkyls of 1 to 4 carbon atoms or alkoxyls of 1 to 4 carbon atoms; tetrahydrofurfuryl, a group of formula (II) or alkyl of 2 to 4 carbon atoms substituted in the 2,3 or 4 position with -OH, alkoxy of 1 to 8 carbon atoms, di (alkyl of 1 to 4 carbon atoms) ) amino or a group of formula (V); the radicals E have, independently of each other, the meanings given for A; and E * has one of the meanings given for A or is a group of formula (VI): being A, E, Rx and Z as defined above; with the proviso that, when n is 2, 3 or 4, each of the radicals E *, Rx and R2 in the repetitive units may have the same or a different meaning.
2. A compound of formula (I) according to claim 1, wherein R3 is hydrogen, alkyl of 1 to 4 carbon atoms, -OH, alkoxy of 6 to 12 carbon atoms, cycloalkoxy of 5 to 8 carbon atoms. carbon, allyl, benzyl or acetyl.
3. A compound of formula (I) according to claim 1, wherein R3 is hydrogen, methyl or cyclohexyloxy.
4. A compound of formula (I) according to claim 1, wherein Z is a group of formula (Illa); and Rs, R6 and R7 are hydrogen.
5. A compound of formula (I) according to claim 1, wherein the radicals Rx are independently of each other, hydrogen, alkyl of 1 to 4 carbon atoms, cycloalkyl of 5 to 8 carbon atoms unsubstituted or substituted with methyl; or a group of formula (II) with the proviso that at least one of the radicals Rx is a group of formula (II); R 4, R 8 and R 9 are independently from each other alkyl of 1 to 4 carbon atoms or cyclohexyl; Rs Rβ and R7 are hydrogen; m is zero or an integer from 1 to 3; R2 has one of the meanings given for Z or is alkylene of 2 to 8 carbon atoms, cyclohexylene, methylene-cyclohexylene-methylene, cyclohexylene-methylene-cyclohexylene or methylene-phenylene-methylene; R? O < Rn and Ri2 are independently from each other, hydrogen, alkyl of 1 to 8 carbon atoms, cycloalkyl of 5 to 8 carbon atoms unsubstituted or substituted by methyl; alkenyl of 3 to 8 carbon atoms, phenyl unsubstituted or substituted by methyl; benzyl, tetrahydrofurfuryl or alkyl of 2 to 3 carbon atoms substituted in the 2 or 3 position by -OH, alkoxy of 1 to 4 carbon atoms, dimethylamino, diethylamino or 4-morpholinyl; or -N (R a) (R 12) is further 4-morpholinyl; R14 is hydrogen, alkyl of 1 to 8 carbon atoms, cycloalkyl of 5 to 8 carbon atoms unsubstituted or substituted by methyl; benzyl, tetrahydrofurfuryl, a group of formula (II) or alkyl of 2 to 3 carbon atoms substituted in the 2 or 3 position with -OH, alkoxy of 1 to 4 carbon atoms, dimethylamino, diethylamino or 4-morpholinyl.
6. A compound of formula (I) according to claim 1, wherein the radicals R x are independently from each other, hydrogen, alkyl of 1 to 4 carbon atoms, cyclohexyl or a group of formula (II) with the proviso that at least one of the radicals Rt is a group of formula (II), - Z is a group of formula (Illa); R 4 is alkyl of 1 to 4 carbon atoms; R5, R6 and R7 are hydrogen, - m is zero or 1; R2 has one of the meanings given for Z or is alkylene of 2 to 8 carbon atoms, - A is -N (RX1) (R12) or a group of formula (IV); Rn and Ri2 are independently from each other, hydrogen, alkyl of 1 to 8 carbon atoms, cyclohexyl, phenyl, benzyl, tetrahydrofurfuryl, 2-hydroxyethyl or 2-methoxyethyl; or -NÍRj (R12) is additionally 4-morpholinyl, -X2 is > N-R14; R 14 is hydrogen, alkyl of 1 to 8 carbon rings, cyclohexyl, benzyl, tetrahydrofurfuryl, a group of formula (II), 2-hydroxyethyl or 2-ratoxyethyl. 7. A compound of formula (I) according to claim 1, wherein n is 1 or 2 the radicals R are a group of formula (II); Z is a group CH-CH2 or CH- (CH, -; I I 011, C., 1 I,
R2 has one of the meanings given for Z;
R3 is hydrogen, alkyl of 1 to 4 carbon atoms or cycloalkoxy of 5 to 8 carbon atoms, - A is -N (R1X) (R12) or a group of formula (IV); Rn and Ri2 are independently from each other alkyl of 1 to 4 carbon atoms; X2 is > N-R14 / - and R14 is alkyl of 1 to 4 carbon atoms. 8. A compound of formula (I) according to claim 1, which corresponds to the formula 10
9. A composition containing an organic material susceptible to degradation induced by light, heat or oxidation and at least one compound of formula (I) according to claim 1.
10. A composition according to claim 9 wherein the Organic material is a synthetic polymer.
11. A composition according to claim 9 wherein the organic material is polyethylene or polypropylene.
12. A method for the stabilization of an organic material against degradation induced by light, heat or oxidation, which comprises the incorporation into said organic material of at least one compound of formula (I) according to claim 1 . ***** SUMMARY A compound of formula (I) A »0) where n is an integer from 1 to 4; radicals R1 are for example a group of formula R3 is for example hydrogen, alkyl of 1 to 8 carbon atoms or cycloalkoxy of 5 to 12 carbon atoms, - Z and R2 are for example a group -CH- -CH, - -CH- (CH2) 2- CH, C2H5 the radicals A and E are, for example, independently of one another -N (R1X) (R12) or a group of formula Rn and Ri2 G? N or example alkyl of 1 to 12 carbon atoms; R13 has for example one of the meanings given for R3; E * has for example one of the meanings given for A or is a group of formula The compounds of formula (I) are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers such as olefins.