WO2018159459A1 - ジアリールアミン系化合物、老化防止剤、およびポリマー組成物 - Google Patents
ジアリールアミン系化合物、老化防止剤、およびポリマー組成物 Download PDFInfo
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- WO2018159459A1 WO2018159459A1 PCT/JP2018/006532 JP2018006532W WO2018159459A1 WO 2018159459 A1 WO2018159459 A1 WO 2018159459A1 JP 2018006532 W JP2018006532 W JP 2018006532W WO 2018159459 A1 WO2018159459 A1 WO 2018159459A1
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- 0 CN(C(C(*)C1*)=O)C1=O Chemical compound CN(C(C(*)C1*)=O)C1=O 0.000 description 5
- RIJCERUQWPAWHP-UHFFFAOYSA-N O=C(c1ccccc1C1=O)N1c(cc1)ccc1Nc(cc1)ccc1N(C(c1c2cccc1)=O)C2=O Chemical compound O=C(c1ccccc1C1=O)N1c(cc1)ccc1Nc(cc1)ccc1N(C(c1c2cccc1)=O)C2=O RIJCERUQWPAWHP-UHFFFAOYSA-N 0.000 description 1
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Definitions
- the present invention is a novel diaryl that exhibits an excellent anti-aging effect on polymer materials that require high heat resistance (for example, heat resistance in a high temperature range of 190 ° C. or higher) and can be suitably applied as an anti-aging agent.
- the present invention relates to an amine compound, and an antioxidant and a polymer composition containing such a diarylamine compound.
- polymers composed of organic compounds have contributed to the development of civilization in various forms such as plastic, rubber, fiber, and film. Since these are used in various environments depending on the application, they have been improved so that they can be used for a long period of time by imparting durability under the assumed environment. For example, products have been developed that provide UV resistance for plastics used outdoors, and cold resistance for rubber that functions even in extremely cold regions.
- an internal combustion engine typified by an engine, which has been used with the development of the industry, requires lubricating oil and generates a great deal of heat. Resistance is required.
- a polymer around an automobile engine is required to have such characteristics that it can maintain flexibility for a long time even when exposed to oil or high temperature and does not cause defects such as cracks.
- Various oil-resistant and heat-resistant rubbers have been developed to meet these demands.
- acrylic rubber is a polymer with excellent rubber resistance, oil resistance, heat resistance, and flexibility. They are widely used as members such as gaskets, packings, and hoses. Oil resistance and heat resistance are further enhanced by devising cross-linking structures, anti-aging agents, and compounding agents according to required characteristics.
- Patent Document 1 discloses an anti-aging agent that improves heat resistance.
- the anti-aging agent disclosed in Patent Document 1 is resistant to deterioration due to the functional group contained in the monomer unit constituting the polymer being oxidized and denatured by long-term use.
- the suppression capability is sufficient, the suppression capability against degradation due to molecular weight reduction due to molecular chain scission that occurs in the early stage of thermal degradation is low, so heat resistance in a high temperature range of 190 ° C. or higher is not sufficient, In some cases, it was insufficient to meet heat resistance requirements.
- the present invention has been made in view of the above circumstances, and exhibits an excellent anti-aging action for polymer materials that require high heat resistance (for example, heat resistance in a high temperature range of 190 ° C. or higher), and is an anti-aging agent. It is an object of the present invention to provide a novel diarylamine-based compound and an antiaging agent and polymer composition containing such a diarylamine-based compound.
- a diarylamine compound represented by the following general formula (1) is provided.
- a 1 and A 2 each independently represents an arylene group having 6 to 18 carbon atoms which may have a substituent
- a 3 and A 4 are each independently And an organic group having a cyclic imide structure which may have a substituent.
- the A 3 and A 4 are preferably each independently an organic group represented by the following general formula (2) or (3), and the following general formula (4) It is more preferably any one of organic groups represented by (9) to (9).
- D represents an optionally substituted ring having 6 to 18 carbon atoms, and m represents 0 or 1.
- R 1 and Each R 2 independently represents a hydrogen atom, an optionally substituted alkyl group having 1 to 30 carbon atoms, or an optionally substituted alkenyl group having 1 to 30 carbon atoms; n represents 0 or 1.
- R 3 to R 8 each independently represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 1 to 30 carbon atoms, or —O—R.
- R 9 —O—C ( ⁇ O) —R 9 , —C ( ⁇ O) —O—R 9 , —C ( ⁇ O) —NR 9 (R 10 ), —NR 9 —C ( ⁇ O) — R 10 , —CN, —SR 9 , —S— ( ⁇ O) —R 9 , or —S ( ⁇ O) 2 —R 9 is represented, and each of R 9 and R 10 independently represents the number of carbon atoms.
- the A 1 and A 2 are preferably 1,4-phenylene groups.
- the diarylamine compound of the present invention is preferably any one of the compounds represented by the following general formulas (10) to (13), and any of the compounds represented by the following formulas (14) to (18) It is more preferable that (In the general formulas (10) to (13), R 11 to R 22 each independently represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 1 to 30 carbon atoms, —OR 23 , —O—C ( ⁇ O) —R 23 , —C ( ⁇ O) —OR 23 , —C ( ⁇ O) —NR 23 (R 24 ), —NR 23 —C ( ⁇ O) —R 24 , — CN, —SR 23 , —S— ( ⁇ O) —R 23 , or —S ( ⁇ O) 2 —R 23 , each of R 23 and R 24 independently represents a group having 1 to 30 carbon atoms. alkyl group, an alkenyl group of 1 to 30 carbon atoms
- the composition containing the said diarylamine type compound and the condensed heterocyclic compound represented by following General formula (19) is provided.
- Y 1 represents a chemical single bond, —S ( ⁇ O) —, or —SO 2 —
- R a and R b each independently represents an organic group having 1 to 30 carbon atoms which may have a substituent.
- Z a and Z b each independently represent a chemical single bond or —SO 2 —.
- X 1 and X 2 are each independently a hydrogen atom, a halogen atom, an optionally substituted alkyl group having 1 to 10 carbon atoms, a cyano group, a nitro group, —OR 25 , —O—C ( ⁇ O) —R 25 , —C ( ⁇ O) —OR 25 , —O—C ( ⁇ O) —OR 25 , —NR 26 (R 27 ), —NR 26 —C ( ⁇ O) —R 25 , —C ( ⁇ O) —NR 26 (R 27 ) or —O—C ( ⁇ O) —NR 26 (R 27 ) is represented.
- R 25 , R 26 and R 27 each independently represent a hydrogen atom or an organic group having 1 to 20 carbon atoms which may have a substituent.
- n and m each independently represents an integer of 0 to 2, and one of n and m is not 0. Further, when n and / or m is 2, two R a s and two R b s may be the same as or different from each other. )
- each of R a and R b independently has a linear or branched alkyl group having 1 to 20 carbon atoms which may have a substituent, or has a substituent. It is preferably a good phenyl group.
- the condensed heterocyclic compound represented by the general formula (19) is preferably a compound represented by the following formula (20) or (21).
- the ratio of the diarylamine compound to the condensed heterocyclic compound is 30: 1 to 1:30 in a weight ratio of “diarylamine compound: fused heterocyclic compound”. Is preferred.
- the anti-aging agent containing the said diarylamine type compound or the said composition is provided.
- the anti-aging agent of the present invention is preferably a polymer anti-aging agent.
- the polymer composition containing a polymer and said anti-aging agent is provided.
- the polymer is preferably a synthetic resin or rubber, and among the rubbers, acrylic rubber is preferable.
- the content of the anti-aging agent is preferably 0.05 to 30 parts by weight with respect to 100 parts by weight of the polymer.
- the present invention exhibits an excellent anti-aging effect on polymer materials that require high heat resistance (for example, heat resistance in a high temperature range of 190 ° C. or higher), and can be suitably applied as an anti-aging agent.
- Diarylamine compounds, and anti-aging agents and polymer compositions containing such diarylamine compounds can be provided.
- the diarylamine-based compound of the present invention is a compound represented by the following general formula (1), exhibits excellent anti-aging action for polymer materials requiring high heat resistance, and is suitable as an anti-aging agent. is there.
- a 1 and A 2 each independently represent an arylene group having 6 to 18 carbon atoms which may have a substituent
- a 3 and A 4 each independently And an organic group having a cyclic imide structure which may have a substituent.
- the diarylamine-based compound of the present invention according to the structure represented by the general formula (1), according to the structure represented by the general formula (1), the molecular chain that occurs in the early stage of thermal degradation of the polymer material It is possible to effectively suppress degradation due to low molecular weight due to cleavage, and furthermore, by bonding an imide structure on both sides of the diarylamine as in the structure represented by the general formula (1), a diarylamine system
- the heat resistance of the compound itself can be increased, and thereby, for example, even in a deterioration temperature range (for example, a temperature range of 190 ° C.
- the decomposition of the diarylamine compound itself can be suppressed, and even in a highly deteriorated environment Since the diarylamine compound itself can be appropriately left in the system, it is possible to maintain a good deterioration prevention effect over a long period of time.
- the diarylamine compound of the present invention can be synthesized relatively easily, and thus has the advantage of being industrially advantageous.
- a 1 and A 2 are each independently an arylene group having 6 to 18 carbon atoms which may have a substituent, and preferably has a substituent.
- substituents examples include halogen atoms such as fluorine atom, chlorine atom and bromine atom; alkoxy groups having 1 to 10 carbon atoms such as methoxy group, ethoxy group and isopropoxy group; nitro group; cyano group; methyl group and ethyl Groups, alkyl groups having 1 to 10 carbon atoms such as t-butyl group, and the like.
- a 3 and A 4 are each independently an organic group having a cyclic imide structure which may have a substituent, and the following general formula (2) or (3 It is preferable that it is an organic group represented by this.
- D represents a ring having 6 to 18 carbon atoms which may have a substituent, and preferably represents a ring having 6 to 10 carbon atoms which may have a substituent.
- D may be monocyclic or polycyclic.
- examples of the substituent include an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 1 to 30 carbon atoms, —O—R 28 , —O—C ( ⁇ O) —R 28 , —C ( ⁇ O ) —O—R 28 , —C ( ⁇ O) —NR 28 (R 29 ), —NR 28 —C ( ⁇ O) —R 29 , —CN, —SR 28 , —S— ( ⁇ O) —R 28 , or —S ( ⁇ O) 2 —R 28 and the like.
- R 28 and R 29 each independently represents an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 1 to 30 carbon atoms, or an aromatic group having 6 to 12 carbon atoms.
- M represents 0 or 1, and is preferably 0.
- R 1 and R 2 each independently have a hydrogen atom, an optionally substituted alkyl group having 1 to 30 carbon atoms, or an optionally substituted group.
- a good alkyl group having 1 to 10 carbon atoms is more preferable.
- examples of the substituent include a halogen atom such as a fluorine atom, a chlorine atom or a bromine atom; an alkoxy group having 1 to 10 carbon atoms such as a methoxy group, an ethoxy group or an isopropoxy group; a nitro group; a cyano group; , A phenyl group which may have a substituent, such as 4-methylphenyl group, 2-chlorophenyl group, and the like. N represents 0 or 1, and is preferably 0.
- R 3 to R 8 each independently represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 1 to 30 carbon atoms, or —O—R 9 , —O—C ( ⁇ O) —R 9 , —C ( ⁇ O) —O—R 9 , —C ( ⁇ O) —NR 9 (R 10 ), —NR 9 —C ( ⁇ O) —R 10 , —CN, —SR 9 , —S— ( ⁇ O) —R 9 , or —S ( ⁇ O) 2 —R 9 , each of R 9 and R 10 independently represents one carbon atom Represents an alkyl group having ⁇ 30, an alkenyl group having 1 to 30 carbon atoms, or an aromatic group having 6 to 12 carbon atoms.
- R 3 to R 8 are each independently preferably a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, more preferably a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, Particularly preferred is an atom or an alkyl group having 1 to 10 carbon atoms. When there are a plurality of R 3 to R 8 , they may be the same or different.
- the general formula (4), (5), (7) or (8) is used from the viewpoint that the antiaging effect can be further enhanced.
- the organic group represented by general formula (4), (5), or (8) is more preferred, and the organic group represented by general formula (5) is particularly preferred. .
- the diarylamine compound of the present invention is preferably any one of compounds represented by the following general formulas (10) to (13).
- R 11 to R 22 are each independently a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 1 to 30 carbon atoms, —OR 23 , — OC ( ⁇ O) —R 23 , —C ( ⁇ O) —OR 23 , —C ( ⁇ O) —NR 23 (R 24 ), —NR 23 —C ( ⁇ O) —R 24 , —CN , —SR 23 , —S— ( ⁇ O) —R 23 , or —S ( ⁇ O) 2 —R 23 , wherein R 23 and R 24 are each independently alkyl having 1 to 30 carbon atoms.
- R 11 to R 22 are each independently preferably a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, more preferably a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, Particularly preferred is an atom or an alkyl group having 1 to 10 carbon atoms.
- a 1 and A 2 are the same as those in the general formula (1).
- the compound represented by the general formula (11) is particularly preferable from the viewpoint that the anti-aging action can be further enhanced.
- the method for synthesizing the diarylamine compound of the present invention is not particularly limited.
- the diamine compound represented by the following general formula (22) and the corresponding dicarboxylic acid anhydride are heated under reflux in an organic solvent.
- a 1 and A 2 are the same as the general formula (1).
- a 3 and A 4 are, in the case of obtaining the above general formula (2) or (3) compound is an organic group which is, as the dicarboxylic acid anhydride, example if, A compound represented by the following general formula (23) or (24) can be used.
- a compound represented by the following general formula (23) or (24) can be used.
- D, R 1 , R 2 , m, and n are the same as those in the general formulas (2) and (3).
- the reaction temperature in the above reaction is preferably ⁇ 30 to 250 ° C., more preferably 0 to 200 ° C.
- the compound represented by the general formula (25) needs to be reacted with two molecules with respect to one molecule of the compound represented by the general formula (22). Amount.
- organic solvents examples include ether-based nonpolar solvents such as 1,2-dimethoxyethane, 1,4-dioxane, and tetrahydrofuran (THF); aromatic hydrocarbon-based nonpolar solvents such as benzene, toluene, and xylene; Solvent; nitrogen-containing aprotic polar solvent such as N, N-dimethylformamide (DMF), N, N-dimethylacetamide, hexamethylphosphoric triamide, N-methylpyrrolidinone (NMP); acetone, methyl ethyl ketone (MEK), Examples include aprotic polar solvents such as ketone aprotic polar solvents such as methyl isobutyl ketone (MIBK); ester aprotic polar solvents such as ethyl acetate and butyl acetate;
- ether-based nonpolar solvents such as 1,2-dimethoxyethane, 1,4-dioxane
- the above reaction is usually carried out in the presence of an acid catalyst or a base catalyst.
- the acid used as the acid catalyst include, but are not limited to, inorganic acids such as hydrochloric acid, sulfuric acid, and phosphoric acid; and organic acids such as p-toluenesulfonic acid, 10-camphorsulfonic acid, and acetic acid.
- Bases used as base catalysts include tertiary amines such as triethylamine, diisopropylethylamine, N-methylmorpholine; pyridines such as pyridine, picoline, lutidine, 4- (dimethylamino) pyridine; sodium hydroxide, potassium hydroxide, carbonate
- tertiary amines such as triethylamine, diisopropylethylamine, N-methylmorpholine
- pyridines such as pyridine, picoline, lutidine, 4- (dimethylamino) pyridine
- sodium hydroxide potassium hydroxide
- carbonate Non-limiting examples include inorganic bases such as potassium.
- the target substance is precipitated in the reaction solution as the reaction proceeds.
- the diarylamine type compound of this invention can be obtained by cooling the reaction solution, adding the poor solvent which does not melt
- the poor solvent include lower alcohols having 1 to 5 carbon atoms such as methanol.
- salts as a by-product can be dissolved. Therefore, the diarylamine compound of the present invention, which is a target product, is substantially free of impurities. Can get. Therefore, the diarylamine compound of the present invention can be isolated with high yield only by a simple operation of filtering the reaction solution.
- the structure of the obtained compound can be identified by spectrum measurement such as NMR spectrum, IR spectrum, mass spectrum and / or elemental analysis.
- the diarylamine compound of the present invention is suitably used as an anti-aging agent because it exhibits an excellent anti-aging effect on polymer materials that require high heat resistance (for example, heat resistance in a high temperature range of 190 ° C. or higher).
- it is particularly suitably used as an anti-aging agent for polymers.
- the diarylamine-based compound of the present invention degradation due to low molecular weight due to molecular chain scission occurring in the early stage of thermal degradation of the polymer material can be effectively suppressed, and further, due to its high heat resistance,
- the anti-deterioration effect can be sustained well over time, and is suitably used as an anti-aging agent, particularly an anti-aging agent for polymers.
- an anti-aging agent other than the diarylamine compound of the present invention for example, a conventionally known anti-aging agent is used as long as the purpose and effect of the present invention are not impaired.
- Anti-aging agents and the like may be used in appropriate combination.
- the composition of this invention contains the diarylamine type compound represented by the general formula (1) mentioned above, and the condensed heterocyclic compound represented by the following general formula (19).
- the composition of the present invention by adding the condensed heterocyclic compound represented by the following general formula (19) to the diarylamine compound represented by the general formula (1) described above, the anti-aging action is further improved. It can be raised.
- the condensed heterocyclic compound represented by the following general formula (19) the ability to suppress deterioration due to oxidation of the polymer due to long-term use is high. By using together the condensed heterocyclic compound represented by (19), the anti-aging effect can be further enhanced.
- Y 1 represents a chemical single bond, —S ( ⁇ O) —, or —SO 2 —, preferably —S ( ⁇ O) —, and —SO 2 —. More preferably, it is —SO 2 —.
- R a and R b each independently represents an organic group having 1 to 30 carbon atoms which may have a substituent.
- Examples of the organic group having 1 to 30 carbon atoms constituting R a and R b include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, and a t-butyl group.
- Alkyl groups having 1 to 30 carbon atoms such as n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, n-nonyl group and n-decyl group; cyclopropyl group, cyclopentyl group, cyclohexyl group Cycloalkyl groups having 3 to 30 carbon atoms such as cycloheptyl group and cyclooctyl group; aryl groups having 6 to 30 carbon atoms such as phenyl group, biphenyl group, naphthyl group and anthranyl group; methoxy group, ethoxy group, n- Propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, sec-butoxy group, t-butoxy group, n-pentyloxy group, n-hexylo group Alkoxy group having 1 to 30 carbon atoms, such as shea
- the organic group which comprises Ra and Rb mentioned above may have a substituent, and can be made into arbitrary positions as a position of this substituent.
- a halogen atom such as a fluorine atom, a chlorine atom or a bromine atom
- a carbon number of 1 to 10 such as a methoxy group, an ethoxy group or an isopropoxy group A nitro group
- a cyano group such as a phenyl group, a 4-methylphenyl group, a 2-chlorophenyl group; and the like.
- a halogen atom such as a fluorine atom, a chlorine atom or a bromine atom
- an alkoxy group having 1 to 10 carbon atoms such as a methoxy group, an ethoxy group or an isopropoxy group
- a cyano group an alkyl group having 1 to 10 carbon atoms such as a methyl group, an ethyl group, and a t-butyl group; and the like.
- halogen atoms such as a fluorine atom, a chlorine atom, and a bromine atom
- Nitro group; Cyano group; etc. are mentioned.
- the carbon number of the organic group does not include the carbon number of the substituent. That is, the organic group constituting R a and R b may have a number of carbon atoms in the range of 1 to 30 excluding the carbon atoms contained in the substituent.
- the organic group constituting R a and R b is a methoxyethyl group
- the organic group has 2 carbon atoms. That is, in this case, since the methoxy group is a substituent, the carbon number of the organic group is obtained by removing the carbon number of the methoxy group that is the substituent.
- R a and R b are each independently a linear or branched alkyl group having 1 to 20 carbon atoms, which may have a substituent, and may have a substituent.
- a preferable phenyl group and an optionally substituted naphthyl group are preferable, and an optionally substituted linear or branched alkyl group having 2 to 8 carbon atoms and a substituent may be included.
- a phenyl group is more preferred.
- Z a and Z b are each independently a chemical single bond or —SO 2 —, and preferably a chemical single bond.
- X 1 and X 2 are each independently a hydrogen atom, a halogen atom, an optionally substituted alkyl group having 1 to 10 carbon atoms, a cyano group, a nitro group, — OR 25 , —O—C ( ⁇ O) —R 25 , —C ( ⁇ O) —OR 25 , —O—C ( ⁇ O) —OR 25 , —NR 26 (R 27 ), —NR 26 —C ( ⁇ O) —R 25 , —C ( ⁇ O) —NR 26 (R 27 ), or —O—C ( ⁇ O) —NR 26 (R 27 ) is represented.
- the halogen atom constituting X 1, X 2, a fluorine atom, a chlorine atom, and bromine atom.
- alkyl group having 1 to 10 carbon atoms which may have a substituent include a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, an isobutyl group, t -Butyl group, n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl group and the like.
- Examples of the substituent for the alkyl group having 1 to 10 carbon atoms include halogen atoms such as fluorine atom, chlorine atom and bromine atom; methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, t-butoxy An alkoxy group such as a group; a nitro group; a cyano group and the like.
- R 25 , R 26 and R 27 each independently represents a hydrogen atom or an optionally substituted organic group having 1 to 20 carbon atoms, and all of R 25 , R 26 and R 27 are hydrogen atoms. It is preferable that
- Examples of the organic group having 1 to 20 carbon atoms that may have a substituent constituting R 25 , R 26 and R 27 include a methyl group, an ethyl group, and an n-propyl group. , Isopropyl group, n-butyl group, isobutyl group, t-butyl group, n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl group, etc.
- Examples of the substituent of the organic group constituting R 25 , R 26 and R 27 include the same as those listed as the substituents of the organic group constituting R a and R b described above.
- X 1 and X 2 are preferably both hydrogen atoms from the viewpoint of availability.
- n and m each independently represent an integer of 0 to 2, and one of n and m is not 0.
- n and m are each independently preferably 0 or 1 (one of n and m is not 0), more preferably n and m are 1.
- two R a s and two R b s may be the same as or different from each other.
- the condensed heterocyclic compound used in the present invention is preferably any one of compounds represented by the following general formulas (26) to (33).
- R a , R b , Z a and Z b are the same as those in the general formula (19).
- the compounds represented by the general formulas (26) to (33) are more preferable, and the above general formulas (30), (31 ) Is more preferable, and a compound represented by the general formula (31) is particularly preferable.
- —Z a —R a and —Z b —R b are each independently an ⁇ -methylbenzyl group, ⁇ , ⁇ -dimethylbenzyl group, t-butyl group.
- a compound which is a phenylsulfonyl group or a 4-methylphenylsulfonyl group is more preferable, and a compound which is an ⁇ , ⁇ -dimethylbenzyl group is particularly preferable.
- the compound represented by the general formula (19) can be synthesized, for example, according to the method described in International Publication No. 2011/093443.
- a compound in which Y 1 is —S ( ⁇ O) — and a compound in which —SO 2 — are used are known methods for producing phenothiazine compounds.
- a compound in which Y 1 is S can be obtained, and then the obtained compound can be oxidized to produce the compound.
- a compound in which Y 1 is a single bond can be produced by applying a known method for producing a carbazole compound.
- the content ratio of the diarylamine compound represented by the general formula (1) and the condensed heterocyclic compound represented by the general formula (19) in the composition of the present invention is “general formula (1)”.
- the weight ratio of the diarylamine compound represented by general formula (19): the condensed heterocyclic compound represented by general formula (19) ” is preferably 30: 1 to 1:30, more preferably 15: 1 to 1: 5. More preferably, it is 8: 1 to 1: 1.
- composition of this invention contains the diarylamine type compound represented by the said General formula (1), and the condensed heterocyclic compound represented by the said General formula (19), high heat resistance (for example, it exhibits an excellent anti-aging effect on polymer materials that are required to have a heat resistance in a high temperature range of 190 ° C. or higher, and is therefore suitably used as an anti-aging agent. It is particularly preferably used as an inhibitor.
- the diarylamine type compound represented by the said General formula (1), and the said General formula may be used in appropriate combination.
- the polymer composition of the present invention comprises a diarylamine compound represented by the general formula (1) or a diarylamine compound represented by the general formula (1) as an anti-aging agent for the polymer. And a composition containing the condensed heterocyclic compound represented by the general formula (19).
- Examples of the polymer used in the present invention include synthetic resin and rubber.
- the synthetic resin can be used without particular limitation as long as it is a synthetic resin used for applications requiring heat resistance, and examples thereof include polyolefins, polystyrene resins, polyesters, polycarbonates, and polyamides. These synthetic resins may be used alone or in combination of two or more.
- the rubber can be used without particular limitation as long as it is used for applications requiring heat resistance.
- natural rubber isoprene rubber, butadiene rubber, butyl rubber, chloroprene rubber, styrene-butadiene copolymer Rubbers containing conjugated diene units such as rubber, acrylonitrile-butadiene copolymer rubber (nitrile rubber), styrene-butadiene-isoprene copolymer rubber, butadiene-isoprene copolymer rubber, acrylonitrile-styrene-butadiene copolymer rubber; acrylic rubber; Hydrin rubber; ethylene propylene rubber; and the like.
- These rubbers may have a hydroxyl group, a carboxyl group, an alkoxysilyl group, an amino group, an epoxy group, and the like. Further, these rubbers may be hydrogenated, and examples thereof include acrylonitrile-butadiene copolymer rubber hydrogenated products (hydrogenated nitrile rubber). These rubbers may be used singly or in combination of two or more, and further, the above-described synthetic resins may be used in combination. Among these, particularly when applied to acrylic rubber or hydrogenated nitrile rubber that requires high heat resistance, it is preferable from the viewpoint that the effect of improving the heat resistance is high, and acrylic rubber is particularly preferable.
- the method of blending the composition containing the ring compound with the polymer is not particularly limited. In addition to the method of blending in the polymer latex or the polymer solution, the polymer is precipitated by coagulating the polymer latex or the polymer solution. The method of mix
- it may be blended at the stage of producing polymer pellets, may be blended at the stage of blending and kneading various compounding agents, or may be blended at the stage of molding using a molding machine, What is necessary is just to select suitably the mixing
- the amount of the composition containing the ring compound is preferably 0.05 to 30 parts by weight, more preferably 0.1 to 15 parts by weight, still more preferably 0.3 to 10 parts by weight based on 100 parts by weight of the polymer. Part by weight, particularly preferably 0.6 to 6 parts by weight.
- the polymer composition of the present invention is represented by the diarylamine compound represented by the general formula (1) or the general formula (1) as long as the object and effects of the present invention are not impaired.
- An anti-aging agent other than the composition containing the diarylamine compound and the condensed heterocyclic compound represented by the general formula (19) may be used in appropriate combination. .
- the blending amount of all anti-aging agents including other anti-aging agents is within the above range.
- the acrylic rubber as an example of the polymer constituting the polymer composition of the present invention comprises 50 to 100% by weight of (meth) acrylic acid ester monomer units and 10 to 0% by weight of crosslinkable monomer units.
- a rubber having 50 to 0% by weight of other monomer units copolymerizable with the monomers forming these monomer units, and adjusting the ratio of each monomer unit constituting the acrylic rubber thus, the physical properties of the rubber can be adjusted.
- “(meth) acryl” means acryl and / or methacryl.
- Acrylic rubber is known as a rubber with excellent oil resistance, especially oil resistance at high temperatures, and good heat resistance, and is in demand as a hose, oil seal, O-ring for automobiles, conveyor belts with built-in devices and machines, etc. It is increasing.
- the (meth) acrylic acid ester monomer forming the (meth) acrylic acid ester monomer unit, which is the main component of the acrylic rubber, is not particularly limited.
- (meth) acrylic acid alkyl ester is preferable.
- examples thereof include monomers and (meth) acrylic acid alkoxyalkyl ester monomers.
- the (meth) acrylic acid alkyl ester monomer is not particularly limited, but is preferably an ester of an alkanol having 1 to 8 carbon atoms and (meth) acrylic acid, specifically, methyl (meth) acrylate, ( (Meth) ethyl acrylate, (meth) acrylic acid n-propyl, (meth) acrylic acid n-butyl, (meth) acrylic acid isopropyl, (meth) acrylic acid isobutyl, (meth) acrylic acid n-hexyl, (meth) Examples include 2-ethylhexyl acrylate and cyclohexyl (meth) acrylate.
- ethyl (meth) acrylate and n-butyl (meth) acrylate are preferable, and ethyl acrylate and n-butyl acrylate are more preferable. These can be used alone or in combination of two or more.
- the (meth) acrylic acid alkoxyalkyl ester monomer is not particularly limited, but an ester of an alkoxyalkyl alcohol having 2 to 8 carbon atoms and (meth) acrylic acid is preferable.
- (meth) acrylic acid Methoxymethyl, ethoxymethyl (meth) acrylate, 2-methoxyethyl (meth) acrylate, 2-ethoxyethyl (meth) acrylate, 2-propoxyethyl (meth) acrylate, 2-butoxyethyl (meth) acrylate , 3-methoxypropyl (meth) acrylate, 4-methoxybutyl (meth) acrylate, and the like.
- 2-ethoxyethyl (meth) acrylate and 2-methoxyethyl (meth) acrylate are preferable, and 2-ethoxyethyl acrylate and 2-methoxyethyl acrylate are particularly preferable. These can be used alone or in combination of two or more.
- the content of the (meth) acrylic acid ester monomer unit in the acrylic rubber is 50 to 100% by weight, preferably 60 to 99.5% by weight, more preferably 70 to 99.5% by weight.
- the content of the (meth) acrylic acid ester monomer unit in the acrylic rubber is 50 to 100% by weight, preferably 60 to 99.5% by weight, more preferably 70 to 99.5% by weight.
- the breakdown of the (meth) acrylic acid ester monomer unit is 30 to 100% by weight of the (meth) acrylic acid alkyl ester monomer unit and 70 to 0% by weight of the (meth) acrylic acid alkoxyalkyl ester monomer unit. It is preferable.
- the crosslinkable monomer that forms the crosslinkable monomer unit is not particularly limited, and is an ⁇ , ⁇ -ethylenically unsaturated carboxylic acid monomer; a monomer having a halogen atom or an epoxy group; Body; and the like.
- the ⁇ , ⁇ -ethylenically unsaturated carboxylic acid monomer is not particularly limited.
- ⁇ , ⁇ -ethylenically unsaturated monocarboxylic acid having 3 to 12 carbon atoms, ⁇ , ⁇ -carbon having 4 to 12 carbon atoms can be used.
- examples thereof include ethylenically unsaturated dicarboxylic acids and monoesters of ⁇ , ⁇ -ethylenically unsaturated dicarboxylic acids having 4 to 12 carbon atoms and alkanols having 1 to 8 carbon atoms.
- Examples of the ⁇ , ⁇ -ethylenically unsaturated monocarboxylic acid having 3 to 12 carbon atoms include acrylic acid, methacrylic acid, ⁇ -ethylacrylic acid, crotonic acid, and cinnamic acid.
- Examples of the ⁇ , ⁇ -ethylenically unsaturated dicarboxylic acid having 4 to 12 carbon atoms include butenedionic acid such as fumaric acid or maleic acid, itaconic acid, citraconic acid and chloromaleic acid.
- Monoesters of ⁇ , ⁇ -ethylenically unsaturated dicarboxylic acid having 4 to 12 carbon atoms and alkanol having 1 to 8 carbon atoms include monomethyl fumarate, monoethyl fumarate, monobutyl fumarate, monomethyl maleate, monoethyl maleate Monocyclic alkyl esters of butenedionic acid such as monobutyl maleate; alicyclic structures such as monocyclopentyl fumarate, monocyclohexyl fumarate, monocyclohexenyl fumarate, monocyclopentyl maleate, monocyclohexyl maleate, monocyclohexenyl maleate Butanedioic acid monoesters having it; itaconic acid monoesters such as monomethyl itaconate, monoethyl itaconate, monobutyl itaconate, monocyclohexyl itaconate; and the like.
- butenedionic acid mono-chain alkyl ester or butenedionic acid monoester having an alicyclic structure is preferable, and monobutyl fumarate, monobutyl maleate, monocyclohexyl fumarate and monocyclohexyl maleate are more preferable.
- These ⁇ , ⁇ -ethylenically unsaturated carboxylic acid monomers can be used alone or in combination of two or more.
- the dicarboxylic acid may be copolymerized as an anhydride and may be any one that hydrolyzes during crosslinking to form a carboxyl group.
- unsaturated alcohol ester of a halogen-containing saturated carboxylic acid For example, unsaturated alcohol ester of a halogen-containing saturated carboxylic acid, (meth) acrylic acid haloalkyl ester, (meth) acrylic acid haloacyloxyalkyl ester, (meth) acrylic Examples include acid (haloacetylcarbamoyloxy) alkyl esters, halogen-containing unsaturated ethers, halogen-containing unsaturated ketones, halomethyl group-containing aromatic vinyl compounds, halogen-containing unsaturated amides, and haloacetyl group-containing unsaturated monomers.
- Examples of the unsaturated alcohol ester of a halogen-containing saturated carboxylic acid include vinyl chloroacetate, vinyl 2-chloropropionate, and allyl chloroacetate.
- Examples of (meth) acrylic acid haloalkyl esters include chloromethyl (meth) acrylate, 1-chloroethyl (meth) acrylate, 2-chloroethyl (meth) acrylate, 1,2-dichloroethyl (meth) acrylate, (meth ) 2-chloropropyl acrylate, 3-chloropropyl (meth) acrylate, 2,3-dichloropropyl (meth) acrylate, and the like.
- (Meth) acrylic acid haloacyloxyalkyl esters include 2- (chloroacetoxy) ethyl (meth) acrylate, 2- (chloroacetoxy) propyl (meth) acrylate, and 3- (chloroacetoxy) propyl (meth) acrylate. And (meth) acrylic acid 3- (hydroxychloroacetoxy) propyl.
- Examples of the (meth) acrylic acid (haloacetylcarbamoyloxy) alkyl ester examples include 2- (chloroacetylcarbamoyloxy) ethyl (meth) acrylate, 3- (chloroacetylcarbamoyloxy) propyl (meth) acrylate, and the like.
- Examples of the halogen-containing unsaturated ether include chloromethyl vinyl ether, 2-chloroethyl vinyl ether, 3-chloropropyl vinyl ether, 2-chloroethyl allyl ether, and 3-chloropropyl allyl ether.
- halogen-containing unsaturated ketone examples include 2-chloroethyl vinyl ketone, 3-chloropropyl vinyl ketone, and 2-chloroethyl allyl ketone.
- halomethyl group-containing aromatic vinyl compound examples include p-chloromethylstyrene and p-chloromethyl- ⁇ -methylstyrene.
- halogen-containing unsaturated amide examples include N-chloromethyl (meth) acrylamide.
- haloacetyl group-containing unsaturated monomer examples include 3- (hydroxychloroacetoxy) propyl allyl ether and p-vinylbenzyl chloroacetate.
- the monomer having an epoxy group is not particularly limited, and examples thereof include an epoxy group-containing (meth) acrylic acid ester and an epoxy group-containing ether.
- examples of the epoxy group-containing (meth) acrylic acid ester include glycidyl (meth) acrylate, and examples of the epoxy group-containing ether include allyl glycidyl ether.
- Examples of the diene monomer include conjugated diene monomers and non-conjugated diene monomers.
- Examples of the conjugated diene monomer include 1,3-butadiene, isoprene, piperylene and the like.
- Examples of non-conjugated diene monomers include ethylidene norbornene, dicyclopentadiene, dicyclopentadienyl (meth) acrylate, 2-dicyclopentadienyl ethyl (meth) acrylate, and the like.
- crosslinkable monomers can be used alone or in combination of two or more.
- the content of the crosslinkable monomer unit in the acrylic rubber is 0 to 10% by weight, preferably 0.5 to 7% by weight, more preferably 0.5 to 5% by weight.
- there is too much content of a crosslinkable monomer unit there exists a possibility that the elongation of the rubber crosslinked material obtained may fall or a compression set rate may increase.
- monomers copolymerizable with the above monomers are not particularly limited.
- aromatic vinyl monomer ⁇ , ⁇ -ethylenically unsaturated nitrile monomer, acryloyloxy group 2
- monomers having at least one monomer olefin monomers, and vinyl ether compounds.
- aromatic vinyl monomers include styrene, ⁇ -methylstyrene, divinylbenzene and the like.
- ⁇ , ⁇ -ethylenically unsaturated nitrile monomer include acrylonitrile and methacrylonitrile.
- polyfunctional (meth) acrylic monomer include (meth) acrylic acid diester of ethylene glycol and (meth) acrylic acid diester of propylene glycol.
- the olefin monomer include ethylene, propylene, 1-butene and 1-octene.
- the vinyl ether compound include vinyl acetate, ethyl vinyl ether, and butyl vinyl ether. Among these, styrene, acrylonitrile and methacrylonitrile are preferable, and acrylonitrile and methacrylonitrile are more preferable.
- the content of other monomer units in the acrylic rubber is 0 to 50% by weight, preferably 0 to 39.5% by weight, more preferably 0 to 29.5% by weight.
- the acrylic rubber used in the present invention can be obtained by polymerizing the above monomers.
- any of an emulsion polymerization method, a suspension polymerization method, a bulk polymerization method, and a solution polymerization method can be used. From the viewpoint of easy control of the polymerization reaction, etc., a conventionally known method for producing acrylic rubber It is preferable to use an emulsion polymerization method under normal pressure, which is generally used.
- Emulsion polymerization may be any of batch, semi-batch and continuous.
- the polymerization is usually carried out in the temperature range of 0 to 70 ° C, preferably 5 to 50 ° C.
- the Mooney viscosity [ML1 + 4, 100 ° C.] (polymer Mooney) of the acrylic rubber used in the present invention thus produced is preferably 10 to 80, more preferably 20 to 70, and particularly preferably 25 to 60. .
- the polymer composition of the present invention includes a diarylamine compound represented by the above general formula (1) or a diarylamine represented by the above general formula (1) as an anti-aging agent.
- a diarylamine compound represented by the above general formula (1) or a diarylamine represented by the above general formula (1) as an anti-aging agent.
- other additives may be further contained.
- additives usually used in the field of using synthetic polymer materials include additives usually used in the field of using synthetic polymer materials.
- reinforcing fillers such as carbon black and silica
- non-reinforcing fillers such as calcium carbonate and clay
- light stabilizers scorch inhibitors
- plasticizers processing aids
- lubricants An antifungal agent, an antistatic agent, a coloring agent, a silane coupling agent, a crosslinking agent, a crosslinking accelerator, a crosslinking retarder, and the like.
- the compounding amount of these additives is not particularly limited as long as it does not impair the object and effect of the present invention, and an amount corresponding to the compounding purpose can be appropriately compounded.
- the polymer composition of the present invention can be prepared, for example, by mixing and kneading each component with a Banbury mixer, a kneader or the like and then further kneading using a kneading roll.
- the blending order of each component is not particularly limited, but after thoroughly mixing components that are difficult to react or decompose with heat, a crosslinking agent that is susceptible to reaction or decomposition with heat can be shortened at a temperature at which reaction or decomposition does not occur. Mixing on time is preferred.
- a crosslinked rubber can be obtained by crosslinking the rubber.
- a rubber cross-linked product is obtained by molding with a molding machine corresponding to a desired shape, for example, an extruder, an injection molding machine, a compressor, a roll, etc., and fixing the shape as a rubber cross-linked product by a cross-linking reaction. Can do. In that case, after shaping
- the molding temperature is usually 10 to 200 ° C, preferably 25 to 120 ° C.
- the crosslinking temperature is usually 130 to 220 ° C., preferably 150 to 190 ° C.
- the crosslinking time is usually 2 minutes to 10 hours, preferably 3 minutes to 6 hours.
- a heating method a method used for crosslinking of rubber such as press heating, steam heating, oven heating, hot air heating and the like may be appropriately selected.
- secondary cross-linking may be performed by heating.
- the secondary crosslinking time varies depending on the heating method, crosslinking temperature, shape, etc., but is preferably 1 to 48 hours. What is necessary is just to select a heating method and heating temperature suitably.
- the rubber cross-linked product thus obtained has excellent heat resistance. Therefore, the rubber cross-linked product obtained by using the above rubber composition takes advantage of its characteristics to provide O-rings, packings, diaphragms, oil seals, shaft seals, bearing seals, mechanical seals, well head seals, electric / electronic devices.
- Seals, seals for pneumatic equipment, etc . cylinder head gaskets attached to the connection between the cylinder block and cylinder head, rocker cover gaskets attached to the connection between the rocker cover and cylinder head, oil pan and cylinder Oil pan gasket attached to the connecting part with the block or transmission case, gasket for fuel cell separator attached between a pair of housings sandwiching a unit cell having a positive electrode, an electrolyte plate and a negative electrode, top cover of a hard disk drive
- gaskets such as gaskets; various belts; fuel hose, turbo air hose, oil hose, radiator hose, heater hose, water hose, vacuum brake hose, control hose, air conditioner hose, brake hose, power steering hose, air hose, marine hose
- Various hoses such as CVJ boots, propeller shaft boots, constant velocity joint boots, rack and pinion boots, etc .; damping of cushioning materials, dynamic dampers, rubber couplings, air springs, vibration isolators, etc. It is
- the thermal decomposition temperature of the anti-aging agent was measured using a differential thermothermal gravimetric simultaneous measurement apparatus (“TG / DTA7200”, manufactured by SII). Specifically, the temperature was raised by the following temperature raising program, and the temperature at which the weight loss exceeded 10 ⁇ g / min was defined as the thermal decomposition temperature. Temperature increase program: 30 ° C ⁇ temperature rise at 5 ° C / min ⁇ 50 ° C, hold for 30 minutes ⁇ temperature rise at 10 ° C / min ⁇ 400 ° C, hold for 5 minutes
- the peak top molecular weight (Mp) of the acrylic polymer was obtained as a polystyrene-equivalent molecular weight by dissolving the polymer composition film in DMF and performing measurement by gel permeation chromatography (GPC). Specific measurement conditions were as follows. In this measurement, when the molecular weight was 1,000 or less, it was determined that the molecular weight was derived from the anti-aging agent, and was not taken into account when determining the peak top molecular weight (Mp) of the acrylic polymer.
- the residual ratio of the anti-aging agent in the system after heating was measured as follows. First, the polymer composition before heating is prepared by dissolving the film of the polymer composition in DMF and measuring by liquid chromatography (LC) in the same manner as in [Measurement of peak top molecular weight (Mp) of acrylic polymer] described above. The amount of anti-aging agent in the product was determined. Specific measurement conditions were as follows.
- the obtained precipitate was washed with 120 cc of methanol, suspended in 140 cc of N-methylpyrrolidinone, and dissolved by heating to 100 ° C. After cooling this solution to room temperature, 280 cc of methanol was added, and the precipitate was filtered off.
- the obtained precipitate was washed with 100 cc of methanol, suspended in 120 cc of N-methylpyrrolidinone, heated to 120 ° C., then cooled to room temperature, filtered and washed with 100 cc of methanol and 200 cc of THF.
- the compound 2 represented by the following formula (18) (in the general formula (13), R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , R 22 are all hydrogen atoms, and A 1 , A 2 are all 1,4-phenylene groups, molecular weight: 559.57) .36 g, 78% yield.
- the structure was identified by 1 H-NMR.
- the obtained precipitate was washed with 100 cc of methanol, suspended in 40 cc of N-methylpyrrolidinone, and heated to 120 ° C. to dissolve. After cooling this solution to room temperature, 60 cc of methanol was added, and the precipitate was filtered off.
- Example 1 A solution prepared by dissolving 1 g of the acrylic polymer (polyethyl acrylate) obtained in Synthesis Example 9 in 9 g of THF was prepared, and 22.7 mg of Compound 1 obtained in Synthesis Example 1 was added to this solution as an anti-aging agent. Added and stirred overnight. 1.2 g of the obtained mixture was divided into 6 cc sample bottles and dried under reduced pressure at 40 ° C. overnight to obtain a polymer composition film.
- the measurement of the peak top molecular weight (Mp) of the acrylic polymer before a heating, and the peak of the acrylic polymer after a heating for 190 degreeC and 144 hours When the top molecular weight (Mp) was measured, the peak top molecular weight of the acrylic polymer was 738,072, 144 hours after heating: 370,455 before heating, and the molecular weight reduction inhibition rate was 50.2%. It was. Moreover, when the residual ratio in the system of the anti-aging agent after heating at 190 ° C. for 144 hours was measured according to the above method, the residual ratio in the system was 100.0%.
- Example 2 A polymer composition film was obtained in the same manner as in Example 1 except that 27.6 mg of Compound 2 obtained in Synthesis Example 2 was used instead of Compound 1 as an anti-aging agent. And when it evaluated similarly to Example 1, the peak top molecular weight of an acrylic polymer is before heating: 816,697, after 144 hours heating: 280,145, and molecular weight fall suppression rate is 34.3%. Met. Further, the residual ratio of the antioxidant in the system was 99.8%.
- Example 3 A polymer composition film was obtained in the same manner as in Example 1 except that 24.4 mg of Compound 3 obtained in Synthesis Example 3 was used in place of Compound 1 as an antioxidant. And when it evaluated similarly to Example 1, the peak top molecular weight of an acrylic polymer is before heating: 826,040,144 hours after heating: 250,217, The molecular weight fall inhibitory rate is 30.3%. Met. Further, the residual ratio of the antioxidant in the system was 74.3%.
- Example 4 A polymer composition film was obtained in the same manner as in Example 1 except that 17.9 mg of Compound 4 obtained in Synthesis Example 4 was used in place of Compound 1 as an antioxidant. And when evaluated in the same manner as in Example 1, the peak top molecular weight of the acrylic polymer was before heating: 798, 286, after 144 hours of heating: 259,836, and the molecular weight reduction inhibition rate was 32.5%. Met. Moreover, the residual ratio in the system of the antioxidant was 100.0%.
- Example 5 A polymer composition film was obtained in the same manner as in Example 1 except that 24.0 mg of Compound 5 obtained in Synthesis Example 5 was used instead of Compound 1 as an anti-aging agent.
- the peak top molecular weight of the acrylic polymer was 780, 238 before heating: 298,213 after heating for 144 hours, and the molecular weight reduction inhibition rate was 38.2%. Met. Further, the residual ratio of the antioxidant in the system was 95.7%.
- Example 1 A polymer composition film was obtained in the same manner as in Example 1 except that 23.1 mg of Compound 6 obtained in Synthesis Example 6 was used in place of Compound 1 as an antioxidant. And when it evaluated similarly to Example 1, the peak top molecular weight of an acrylic polymer is before heating: 798,286, after 144 hours heating: 125,945, and molecular weight fall suppression rate is 15.8%. Met. Further, the residual ratio of the antioxidant in the system was 88.0%.
- Example 2 A polymer composition film was obtained in the same manner as in Example 1 except that 23.9 mg of Compound 7 obtained in Synthesis Example 7 was used in place of Compound 1 as an antioxidant.
- the peak top molecular weight of the acrylic polymer was before heating: 746,832, 144 hours after heating: 202,235, and the molecular weight reduction inhibition rate was 27.1%. Met. Further, the residual ratio of the antioxidant in the system was 44.0%.
- Acrylic rubber (trade name “Nipol AR212HR”, manufactured by Nippon Zeon Co., Ltd.) 100 parts, silica (trade name “Nipsil ER”, manufactured by Tosoh Silica Co., Ltd.) 50 parts, silane coupling agent (trade name “KBM-403”, Shin-Etsu) 1 part of silicone), 2 parts of stearic acid, 1 part of ester wax (trade name “Greg G8205”, manufactured by Dainippon Ink Co., Ltd.), 5 parts of plasticizer (trade name “Adeka Sizer RS735”, manufactured by Adeka) And after knead
- Example 7 A polymer composition and a crosslinked rubber product were prepared and evaluated in the same manner as in Example 6 except that the compounding amount of Compound 1 as an antioxidant was changed from 1 part to 2 parts. The results are shown in Table 2.
- Example 8 A polymer composition and a crosslinked rubber were prepared and evaluated in the same manner as in Example 7 except that 1 part of Compound 6 obtained in Synthesis Example 6 was further added as an anti-aging agent. The results are shown in Table 2.
- Example 9 A polymer composition and a crosslinked rubber product were prepared and evaluated in the same manner as in Example 7 except that 0.5 part of Compound 6 obtained in Synthesis Example 6 was further added as an antioxidant. The results are shown in Table 2.
- Example 10 A polymer composition and a crosslinked rubber were prepared and evaluated in the same manner as in Example 7 except that 1 part of Compound 8 obtained in Synthesis Example 8 was further added as an antioxidant. The results are shown in Table 2.
- the obtained rubber cross-linked product is any
- the elongation change rate before and after heating at 190 ° C. for 504 hours was high, and the heat aging resistance under a high temperature environment of 190 ° C. was insufficient.
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Abstract
Description
RaおよびRbはそれぞれ独立して、置換基を有していてもよい炭素数1~30の有機基を表す。
ZaおよびZbはそれぞれ独立して、化学的な単結合または-SO2-を表す。
X1およびX2はそれぞれ独立して、水素原子、ハロゲン原子、置換基を有していてもよい炭素数1~10のアルキル基、シアノ基、ニトロ基、-OR25、-O-C(=O)-R25、-C(=O)-OR25、-O-C(=O)-OR25、-NR26(R27)、-NR26-C(=O)-R25、-C(=O)-NR26(R27)、または、-O-C(=O)-NR26(R27)を表す。ここで、R25、R26およびR27はそれぞれ独立して、水素原子、または置換基を有していてもよい炭素数1~20の有機基を表す。
nおよびmはそれぞれ独立して、0~2の整数を表し、nおよびmのいずれか一方は0でない。
また、nおよび/またはmが2のとき、2個のRa同士および2個のRb同士は、互いに同一であっても、異なっていてもよい。)
また、本発明の組成物において、前記一般式(19)で表される縮合複素環化合物が、下記式(20)または(21)で表される化合物であることが好ましい。
本発明の老化防止剤は、ポリマー用老化防止剤であることが好ましい。
本発明のポリマー組成物において、ポリマーが、合成樹脂またはゴムであることが好ましく、ゴムのなかでも、アクリルゴムが好ましい。
本発明のポリマー組成物において、前記老化防止剤の含有量が、前記ポリマー100重量部に対して、0.05~30重量部であることが好ましい。
本発明のジアリールアミン系化合物は、下記一般式(1)で表される化合物であり、高い耐熱性が求められるポリマー材料に対して優れた老化防止作用を示し、老化防止剤として好適なものである。
本発明の組成物は、上述した一般式(1)で表されるジアリールアミン系化合物と、下記一般式(19)で表される縮合複素環化合物とを含有する。本発明の組成物によれば、上述した一般式(1)で表されるジアリールアミン系化合物に、下記一般式(19)で表される縮合複素環化合物を加えることで、老化防止作用をより高めることができるものである。特に、下記一般式(19)で表される縮合複素環化合物によれば、長時間の使用による、重合体の酸化に起因する劣化に対する抑制能力が高いため、このような特性により、下記一般式(19)で表される縮合複素環化合物を併用することで、老化防止作用をより高めることができるものである。
RaおよびRbを構成する炭素数1~30の有機基としては、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、イソブチル基、sec-ブチル基、t-ブチル基、n-ペンチル基、n-ヘキシル基、n-ヘプチル基、n-オクチル基、n-ノニル基、n-デシル基等の炭素数1~30のアルキル基;シクロプロピル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロオクチル基等の炭素数3~30のシクロアルキル基;フェニル基、ビフェニル基、ナフチル基、アントラニル基等の炭素数6~30のアリール基;メトキシ基、エトキシ基、n-プロポキシ基、イソプロポキシ基、n-ブトキシ基、イソブトキシ基、sec-ブトキシ基、t-ブトキシ基、n-ペンチルオキシ基、n-ヘキシルオキシ基等の炭素数1~30のアルコキシ基;等が挙げられる。
前記有機基がシクロアルキル基およびアリール基である場合には、フッ素原子、塩素原子、臭素原子等のハロゲン原子;メトキシ基、エトキシ基、イソプロポキシ基等の炭素数1~10のアルコキシ基;ニトロ基;シアノ基;メチル基、エチル基、t-ブチル基等の炭素数1~10のアルキル基;等が挙げられる。
また、前記有機基がアルコキシ基の場合には、フッ素原子、塩素原子、臭素原子等のハロゲン原子;ニトロ基;シアノ基;等が挙げられる。
このようなRaおよびRbを構成する有機基の好ましい具体例としては、α-メチルベンジル基、α,α-ジメチルベンジル基、t-ブチル基、フェニル基、または4-メチルフェニル基などが挙げられ、これらのなかでも、α,α-ジメチルベンジル基、または4-メチルフェニル基が特に好ましい。なお、これらは、それぞれ独立したものとすることができる。
置換基を有していてもよい炭素数1~10のアルキル基の炭素数1~10のアルキル基としては、メチル基、エチル基、プロピル基、イソプロピル基、n-ブチル基、イソブチル基、t-ブチル基、n-ペンチル基、n-ヘキシル基、n-ヘプチル基、n-オクチル基、n-ノニル基、n-デシル基等が挙げられる。
また、nおよび/またはmが2のとき、2個のRa同士および2個のRb同士は、互いに同一であっても、異なっていてもよい。
また、上記式(26)~(33)中、-Za-Ra、-Zb-Rbがそれぞれ独立して、α-メチルベンジル基、α,α-ジメチルベンジル基、t-ブチル基、フェニルスルホニル基、または4-メチルフェニルスルホニル基である化合物がさらに好ましく、α,α-ジメチルベンジル基である化合物が特に好ましい。
本発明のポリマー組成物は、ポリマーに対して、老化防止剤として、上記一般式(1)で表されるジアリールアミン系化合物、または、上記一般式(1)で表されるジアリールアミン系化合物と、上記一般式(19)で表される縮合複素環化合物とを含有する組成物を配合してなるものである。
本発明のポリマー組成物を構成するポリマーの一例としてのアクリルゴムは、(メタ)アクリル酸エステル単量体単位50~100重量%および架橋性単量体単位10~0重量%、および必要に応じこれらの単量体単位を形成する単量体と共重合可能なその他の単量体の単位50~0重量%を有するゴムであり、アクリルゴムを構成する各単量体単位の割合を調節することにより、ゴム物性を調整することができる。なお、本発明では、「(メタ)アクリル」は、アクリルおよび/またはメタアクリルのことを示す。
また、本発明のポリマー組成物には、ポリマー、および、老化防止剤としての、上記一般式(1)で表されるジアリールアミン系化合物、または、上記一般式(1)で表されるジアリールアミン系化合物と、上記一般式(19)で表される縮合複素環化合物とを含有する組成物に加えて、さらにその他の添加剤を含有されていてもよい。
これらの添加剤の配合量は、本発明の目的や効果を阻害しない範囲であれば特に限定されず、配合目的に応じた量を適宜配合することができる。
各種の物性については、以下の方法に従って評価した。
老化防止剤の熱分解温度は、示差熱熱重量同時測定装置(「TG/DTA7200」、SII社製)を用いて測定した。具体的には、下記の昇温プログラムにより昇温を行い、重量減少が10μg/分を超えた温度を、熱分解温度とした。
昇温プログラム:30℃ → 5℃/分で昇温 → 50℃、30分間保持 → 10℃/分で昇温 → 400℃、5分間保持
アクリル重合体のピークトップ分子量(Mp)は、ポリマー組成物のフィルムをDMFに溶解させて、ゲルパーミエーションクロマトグラフィ(GPC)による測定を行うことで、ポリスチレン換算分子量として求めた。具体的な測定条件は以下の通りとした。なお、本測定においては、分子量が1,000以下については、老化防止剤に由来するものと判断し、アクリル重合体のピークトップ分子量(Mp)を求める際には、考慮しなかった。
機器 :東ソー社製 高速液体クロマトグラフ HPC-8220GPC
カラム:東ソー社製 SupeR AWM-H(2本直列)
温度 :40℃
検出器:東ソー社製 RI-8220
溶離液:DMF(10mmol/L臭化リチウム含有)
ポリマー組成物のフィルムを、空気中、190℃にて、144時間加熱することで、加熱後のポリマー組成物のフィルムを得た。そして、得られた加熱後のポリマー組成物のフィルムについて、上記と同様にして、ポリマー組成物中に含まれるアクリル重合体のピークトップ分子量(Mp)を求め、下記式にしたがって、分子量低下抑制率(%)を算出した。分子量低下抑制率が高いほど、加熱による劣化に対する耐性が高く、老化防止効果に優れていると判断できる。
分子量低下抑制率(%)=(「加熱後のアクリル重合体のピークトップ分子量」/「加熱前のアクリル重合体のピークトップ分子量」)×100
加熱後の老化防止剤の系内残存率測定は、以下の通りにして行った。
まず、上述した[アクリル重合体のピークトップ分子量(Mp)の測定]と同様にポリマー組成物のフィルムをDMFに溶解させて、液体クロマトグラフィ(LC)による測定を行うことで、加熱前のポリマー組成物中の老化防止剤量を求めた。なお、具体的な測定条件は以下の通りとした。
機器 :Agilent 1200series
カラム:Agilent ZORBAX Bonus-RP、4.6x250mm,5μmまたはAgilent ZORBAX Eclipse XDB-C18、4.6x250mm,5μm
温度 :40℃
検出器:UV(254.4nmまたは270.4nm)
溶離液:アセトニトリル(1mL/分)
加熱後の老化防止剤の系内残存率(%)=(「加熱後のポリマー組成物中の老化防止剤量」/「加熱前のポリマー組成物中の老化防止剤量」)×100
還流冷却器を備えた500ccの4つ口フラスコに、4,4’-ジアミノジフェニルアミン硫酸塩水和物15.00g、無水フタル酸16.46g、酢酸140cc、およびN-メチルピロリジノン70ccを仕込み、125℃で2.5時間加熱した。加熱終了後、反応液を室温に戻し、メタノール140ccを添加して析出物を濾別した。得られた析出物をメタノール120ccで洗浄した後、N-メチルピロリジノン140ccに懸濁させ、100℃に昇温し溶解させた。この溶液を室温に冷却後、メタノール280ccを添加して析出物を濾別し、得られた析出物をメタノール130ccで洗浄して減圧乾燥させることで、下記式(15)に示す化合物1(上記一般式(11)において、R11,R12,R13,R14,R15,R16,R17,R18がいずれも水素原子であり、A1,A2が、いずれも1,4-フェニレン基である化合物、分子量:459.45)を18.53g、収率80%で得た。構造は1H-NMRにより同定した。1H-NMR(500MHz、DMSO-d6、TMS、δppm):δ 7.25(dd、J=2.0、6.5Hz、4H)、7.31(dd、J=2.0、6.5Hz、4H)、7.90(dd、J=3.0、5.5Hz、4H)、7.96(dd、J=3.0、5.5Hz、4H)、8.65(s、1H)。また、上記方法にしたがって、熱分解温度を測定したところ、362℃であった。
還流冷却器を備えた200ccの4つ口フラスコに、4,4’-ジアミノジフェニルアミン硫酸塩水和物5.00g、2、3-ナフタレンジカルボン酸無水物7.97g、酢酸40cc、およびN-メチルピロリジノン60ccを仕込み、130℃で1.7時間加熱した。加熱終了後、反応液を室温に戻し、析出物を濾別した。得られた析出物をメタノール100ccで洗浄した後、N-メチルピロリジノン120ccに懸濁させて120℃に昇温し、次いで、室温に冷却して濾別し、メタノール100cc、およびTHF200ccで洗浄を行った後に、180℃で減圧乾燥させることで、下記式(18)に示す化合物2(上記一般式(13)において、R11,R12,R13,R14,R15,R16,R17,R18,R19,R20,R21,R22がいずれも水素原子であり、A1,A2が、いずれも1,4-フェニレン基である化合物、分子量:559.57)を7.36g、収率78%で得た。構造は1H-NMRにより同定した。1H-NMR(500MHz、DMSO-d6、TMS、δppm):δ 7.28(d、J=9.0Hz、4H)、7.38(d、J=9.0Hz、4H)、7.81(dd、J=3.0、6.0Hz、4H)、8.32(dd、J=3.0、6.0Hz、4H)、8.62(s、4H)、8.69(s、1H)。また、上記方法にしたがって、熱分解温度を測定したところ、400℃以上であった。
還流冷却器を備えた200ccの4つ口フラスコに、4,4’-ジアミノジフェニルアミン硫酸塩水和物5.02g、ヘキサヒドロ-4、7-メタノイソベンゾフラン-1、3-ジオン6.66g、酢酸40cc、およびN-メチルピロリジノン20ccを仕込み、125℃で2時間加熱した。加熱終了後、反応液を室温に戻し、メタノール60ccを添加して析出物を濾別した。得られた析出物をメタノール100ccで洗浄した後、N-メチルピロリジノン40ccに懸濁させ、120℃に昇温し溶解させた。この溶液を室温に冷却後、メタノール60ccを添加して析出物を濾別し、得られた析出物をメタノール140ccで洗浄して減圧乾燥させることで、下記式(17)に示す化合物3(上記一般式(12)において、R11,R12,R13,R14,R15,R16,R17,R18がいずれも水素原子であり、A1,A2が、いずれも1,4-フェニレン基である化合物、分子量:495.57)を6.20g、収率75%で得た。構造は1H-NMRにより同定した。1H-NMR(500MHz、DMSO-d6、TMS、δppm):δ 1.27(dd、J=1.5、8.5Hz、4H)、1.55(d、J=10.0Hz、4H)、1.58(d、J=10.0Hz、2H)、1.67(d、J=10.0Hz、2H)、2.67(s、4H)、3.24(s、4H)、7.07(d、J=8.5Hz、4H)、7.18(d、J=8.5Hz、4H)、8.60(s、1H)。また、上記方法にしたがって、熱分解温度を測定したところ、368℃であった。
還流冷却器を備えた200ccの4つ口フラスコに、4,4’-ジアミノジフェニルアミン硫酸塩水和物5.00g、コハク酸無水物4.05g、酢酸40cc、およびN-メチルピロリジノン20ccを仕込み、125℃で1.6時間加熱した。加熱終了後、反応液を室温に戻し、メタノール180ccを添加して析出物を濾別した。得られた析出物をメタノール20ccで洗浄した後、N-メチルピロリジノン30ccに懸濁させ、70℃に昇温し溶解させた。この溶液を室温に冷却後、メタノール120ccを添加して析出物を濾別し、得られた析出物をメタノール170ccで洗浄して減圧乾燥させることで、下記式(14)に示す化合物4(上記一般式(10)において、R11,R12,R13,R14がいずれも水素原子であり、A1,A2が、いずれも1,4-フェニレン基である化合物、分子量:363.37)を2.84g、収率46%で得た。構造は1H-NMRにより同定した。1H-NMR(500MHz、DMSO-d6、TMS、δppm):δ 2.76(s、8H)、7.11(dd、J=2.0、7.0Hz、4H)、7.17(dd、J=2.0、7.0Hz、4H)、8.55(s、1H)。また、上記方法にしたがって、熱分解温度を測定したところ、339℃であった。
還流冷却器を備えた200ccの4つ口フラスコに、4,4’-ジアミノジフェニルアミン硫酸塩水和物5.01g、4-メチルフタル酸無水物6.66g、酢酸40cc、およびN-メチルピロリジノン20cc仕込み、125℃で1.7時間加熱した。加熱終了後、反応液を室温に戻し、メタノール60ccを添加して析出物を濾別した。得られた析出物をメタノール100ccで洗浄した後、N-メチルピロリジノン50ccに懸濁させて120℃に昇温し、次いで、室温に冷却した後、メタノール100ccを添加して濾別し、メタノール100ccで洗浄を行った後に、180℃で減圧乾燥させることで、下記式(16)に示す化合物5(上記一般式(11)において、R11,R13,R14,R15,R17,R18がいずれも水素原子であり、R12,R16がいずれもメチル基であり、A1,A2が、いずれも1,4-フェニレン基である化合物、分子量:487.51)を6.70g、収率82%で得た。構造は1H-NMRにより同定した。1H-NMR(500MHz、DMSO-d6、TMS、δppm):δ 2.50(t、J=1.5Hz、6H)、7.24(d、J=8.5Hz、4H)、7.30(d、J=8.5Hz、4H)、7.70(d、J=7.5Hz、2H)、7.79(s、2H)、7.84(d、J=7.5Hz、2H)、8.64(s、1H)。また、上記方法にしたがって、熱分解温度を測定したところ、379℃であった。
温度計を備えた3つ口反応器に窒素気流中、フェノチアジン50.0gを加えて、トルエン200mlに溶解させた。次いで、この溶液にα-メチルスチレン59.31gとp-トルエンスルホン酸1水和物1.19gを加えて80℃にて1時間反応させた。その後、反応液を室温に戻して酢酸48ml、30%過酸化水素水85.34gを加えて、さらに80℃にて2時間反応させた。反応液を室温に戻した後、メタノール630mlに投入した。析出した結晶をろ過し、320mlのメタノールでリンスすることで、下記式(20)に示す化合物6を85.7g、収率73%で得た。構造は1H-NMRで同定した。1H-NMR(500MHz、DMSO-d6、TMS、δppm):1.67(s,12H)、7.15-7.32(m,12H)、7.43(dd,2H,J=9.0, 2.0Hz)、7.68(d,2H,J=1.5Hz)、10.84(s,1H)。また、上記方法にしたがって、熱分解温度を測定したところ、341℃であった。
冷却器、温度計を備えた4つ口反応器に、窒素気流中、無水トリメリット酸80g、および4-アミノジフェニルアミン76.7gを、酢酸1リットルに溶解した。この溶液をオイルバスにて10時間加熱還流下にて反応を行った。反応終了後、反応液を水2リットルに投入し、固体を析出させた。その後、析出した固体を吸引ろ過した。ろ物を水、メタノールの順で洗浄した後、真空乾燥機で乾燥させ、下記式(34)で示す中間体を138.5g、収率92%で得た。構造は1H-NMRで同定した。1H-NMR(500MHz、THF-d8、TMS、δppm):6.97(t、1H、J=7.0Hz)、7.24-7.28(m、4H)、7.33-7.36(m、2H)、7.40-7.42(m、2H)、7.68(s、1H)、8.11(d、1H、J=8.5Hz)、8.56-8.58(m、2H)、12.20(bs、1H)。
温度計を備えた3つ口反応器に、窒素気流中、フェノチアジン 30.0gを加え、トルエン175mlに溶解させた。次いで、この溶液にα-メチルスチレン35.58gとp-トルエンスルホン酸1水和物0.72gを加えて80℃にて1時間反応させた。反応液を室温に戻した後、酢酸60mlを加え、30%過酸化水素水17.07gを30分かけてゆっくりと滴下し、さらに室温で2時間反応させた。その後、反応液にメタノール760mlを加え、析出した結晶をろ過し、380mlのメタノールでリンスすることで、下記式(21)に示す化合物8を55.5g、収率82%で得た。構造は1H-NMRで同定した。1H-NMR(500MHz、DMSO-d6、TMS、δppm):δ 1.68(s, 6H),1.70(s, 6 H),7.15-7.32(m, 12 H), 7.38(dd, 2 H, J = 9.0, 2.0 Hz), 7.70(d, 2 H, J = 1.5 Hz), 10.85(s, 1 H)。また、上記方法にしたがって、熱分解温度を測定したところ、260℃であった。
温度計、攪拌装置、窒素導入管および減圧装置を備えた重合反応器に、水200部、ラウリル硫酸ナトリウム3部、およびアクリル酸エチル100部を仕込み、減圧による脱気および窒素置換を繰り返して酸素を十分除去した後、ナトリウムホルムアルデヒドスルホキシレート0.002部およびクメンハイドロパーオキシド0.005部を加えて常圧、常温下で乳化重合反応を開始させ、重合転化率が95%に達するまで反応を継続し、重合停止剤を添加して重合を停止した。そして、得られた乳化重合液を硫酸マグネシウム水溶液で凝固させ、水洗、乾燥することで、ゴム状のアクリル重合体(ポリアクリル酸エチル)を得た。
合成例9で得られたアクリル重合体(ポリアクリル酸エチル)1gをTHF9gに溶解させた溶液を調製し、この溶液に、老化防止剤として、合成例1で得られた化合物1 22.7mgを添加して一晩攪拌した。得られた混合物を6ccサンプル瓶に1.2g分け取り、40℃で一晩減圧乾燥させることで、ポリマー組成物のフィルムを得た。そして、得られたポリマー組成物のフィルムを用いて、上記方法にしたがって、加熱前のアクリル重合体のピークトップ分子量(Mp)の測定、および、190℃、144時間加熱後のアクリル重合体のピークトップ分子量(Mp)の測定を行ったところ、アクリル重合体のピークトップ分子量は、加熱前:738,072、144時間加熱後:370,455であり、分子量低下抑制率は50.2%であった。また、上記方法にしたがって、190℃、144時間加熱後の老化防止剤の系内残存率を測定したところ、系内残存率は100.0%であった。
老化防止剤として、化合物1の代わりに、合成例2で得られた化合物2 27.6mgを使用した以外は、実施例1と同様にして、ポリマー組成物のフィルムを得た。そして、実施例1と同様に評価を行ったところ、アクリル重合体のピークトップ分子量は、加熱前:816,697、144時間加熱後:280,145であり、分子量低下抑制率は34.3%であった。また、老化防止剤の系内残存率は99.8%であった。
老化防止剤として、化合物1の代わりに、合成例3で得られた化合物3 24.4mgを使用した以外は、実施例1と同様にして、ポリマー組成物のフィルムを得た。そして、実施例1と同様に評価を行ったところ、アクリル重合体のピークトップ分子量は、加熱前:826,040、144時間加熱後:250,217であり、分子量低下抑制率は30.3%であった。また、老化防止剤の系内残存率は74.3%であった。
老化防止剤として、化合物1の代わりに、合成例4で得られた化合物4 17.9mgを使用した以外は、実施例1と同様にして、ポリマー組成物のフィルムを得た。そして、実施例1と同様に評価を行ったところ、アクリル重合体のピークトップ分子量は、加熱前:798,286、144時間加熱後:259,836であり、分子量低下抑制率は32.5%であった。また、老化防止剤の系内残存率は100.0%であった。
老化防止剤として、化合物1の代わりに、合成例5で得られた化合物5 24.0mgを使用した以外は、実施例1と同様にして、ポリマー組成物のフィルムを得た。そして、実施例1と同様に評価を行ったところ、アクリル重合体のピークトップ分子量は、加熱前:780,238、144時間加熱後:298,213であり、分子量低下抑制率は38.2%であった。また、老化防止剤の系内残存率は95.7%であった。
老化防止剤として、化合物1の代わりに、合成例6で得られた化合物6 23.1mgを使用した以外は、実施例1と同様にして、ポリマー組成物のフィルムを得た。そして、実施例1と同様に評価を行ったところ、アクリル重合体のピークトップ分子量は、加熱前:798,286、144時間加熱後:125,945であり、分子量低下抑制率は15.8%であった。また、老化防止剤の系内残存率は88.0%であった。
老化防止剤として、化合物1の代わりに、合成例7で得られた化合物7 23.9mgを使用した以外は、実施例1と同様にして、ポリマー組成物のフィルムを得た。そして、実施例1と同様に評価を行ったところ、アクリル重合体のピークトップ分子量は、加熱前:746,832、144時間加熱後:202,235であり、分子量低下抑制率は27.1%であった。また、老化防止剤の系内残存率は44.0%であった。
老化防止剤として、化合物1の代わりに、化合物9(4、4’-ビス(α、α-ジメチルベンジル)ジフェニルアミン、商品名「ノクラックCD」、大内新興化学工業社製、熱分解温度:252℃)20.0mgを使用した以外は、実施例1と同様にして、ポリマー組成物のフィルムを得た。そして、実施例1と同様に評価を行ったところ、アクリル重合体のピークトップ分子量は、加熱前:746,832、144時間加熱後:107,527であり、分子量低下抑制率は14.4%であった。また、老化防止剤の系内残存率は9.7%であった。
表1に示すように、老化防止剤として、上記一般式(1)で表されるジアリールアミン系化合物を使用した実施例1~5に係るポリマー組成物によれば、190℃、144時間加熱した後における、ポリマーの分子量低下を良好に抑制できることが確認できる。また、上記一般式(1)で表されるジアリールアミン系化合物を含有する実施例1~5に係るポリマー組成物においては、190℃、144時間加熱した後における、上記一般式(1)で表されるジアリールアミン系化合物の系内残存率も高く、老化防止効果を長時間にわたって持続可能なものであることも確認できる。
一方、上記一般式(1)で表されるジアリールアミン系化合物以外の老化防止剤を使用した比較例1~3に係るポリマー組成物においては、これらのうち、比較例1,3に係るポリマー組成物は、190℃、144時間加熱した後における、ポリマーの分子量の低下が大きくなる結果となり、さらに、比較例2,3に係るポリマー組成物においては、老化防止剤の系内残存率が低く、長時間にわたる老化防止効果が期待できないものであった。
アクリルゴム(商品名「Nipol AR212HR」、日本ゼオン社製)100部、シリカ(商品名「Nipsil ER」、東ソー・シリカ社製)50部、シランカップリング剤(商品名「KBM-403」、信越シリコーン社製)1部、ステアリン酸2部、エステル系ワックス(商品名「グレッグ G8205」、大日本インキ社製)1部、可塑剤(商品名「アデカサイザー RS735」、アデカ社製)5部、および、老化防止剤として、合成例1で得られた化合物1 1部を、バンバリーミキサーを用いて50℃で混練した後、架橋剤としてのヘキサメチレンジアミンカルバメート(商品名「Diak No.1」、デュポン ダウ エラストマージャパン社製)0.5部、および架橋促進剤としてのジ-o-トリルグアニジン(商品名「ノクセラーDT」、大内新興化学工業社製)2部を添加して、オープンロールで50℃にて混練することで、ポリマー組成物を得た。
加熱前後の伸び変化率(%)=(「加熱前の試験片の伸び(%)」-「加熱後の試験片の伸び(%)」/「加熱前の試験片の伸び(%)」)×100
老化防止剤としての化合物1の配合量を1部から2部に変更した以外は、実施例6と同様にして、ポリマー組成物およびゴム架橋物の調製を行い、同様に評価した。結果を表2に示す。
老化防止剤として、合成例6で得られた化合物6 1部をさらに配合した以外は、実施例7と同様にして、ポリマー組成物およびゴム架橋物の調製を行い、同様に評価した。結果を表2に示す。
老化防止剤として、合成例6で得られた化合物6 0.5部をさらに配合した以外は、実施例7と同様にして、ポリマー組成物およびゴム架橋物の調製を行い、同様に評価した。結果を表2に示す。
老化防止剤として、合成例8で得られた化合物8 1部をさらに配合した以外は、実施例7と同様にして、ポリマー組成物およびゴム架橋物の調製を行い、同様に評価した。結果を表2に示す。
老化防止剤として、化合物1に代えて、合成例6で得られた化合物6 1部を使用した以外は、実施例6と同様にして、ポリマー組成物およびゴム架橋物の調製を行い、同様に評価した。結果を表2に示す。
老化防止剤として、化合物1に代えて、化合物9 1部を使用した以外は、実施例6と同様にして、ポリマー組成物およびゴム架橋物の調製を行い、同様に評価した。結果を表2に示す。
表2に示すように、老化防止剤として、上記一般式(1)で表されるジアリールアミン系化合物を使用した実施例6~10に係るポリマー組成物によれば、これを用いて得られるゴム架橋物は、いずれも、190℃、504時間での加熱前後の伸び変化率が低く抑えられており、190℃という高温環境下での耐熱老化性に優れるものであった。なかでも、老化防止剤として、上記一般式(1)で表されるジアリールアミン系化合物と、上記一般式(19)で表される縮合複素環化合物とを組み合わせて用いた場合には、190℃、504時間での加熱前後の伸び変化率がより低く抑えられる結果となり、より耐熱老化性に優れるものであった。
一方、老化防止剤として、上記一般式(1)で表されるジアリールアミン系化合物以外の老化防止剤を使用した比較例4,5に係るポリマー組成物においては、得られるゴム架橋物は、いずれも、190℃、504時間での加熱前後の伸び変化率が高く、190℃という高温環境下での耐熱老化性が不十分であった。
Claims (17)
- 前記A3およびA4が、それぞれ独立して、下記一般式(4)~(9)で表される有機基のいずれかである請求項2に記載のジアリールアミン系化合物。
(上記一般式(4)~(9)中、R3~R8は、それぞれ独立して、水素原子、炭素数1~30のアルキル基、炭素数1~30のアルケニル基、-O-R9、-O-C(=O)-R9、-C(=O)-O-R9、-C(=O)-NR9(R10)、-NR9-C(=O)-R10、-CN、-SR9、-S-(=O)-R9、または、-S(=O)2-R9を表し、R9、R10は、それぞれ独立して、炭素数1~30のアルキル基、炭素数1~30のアルケニル基、または炭素数6~12の芳香族基を表す。R3~R8が複数存在する場合、それらは同一であっても、相異なっていてもよい。) - 下記一般式(10)~(13)で表される化合物のいずれかである請求項3に記載のジアリールアミン系化合物。
(上記一般式(10)~(13)中、R11~R22は、それぞれ独立して、水素原子、炭素数1~30のアルキル基、炭素数1~30のアルケニル基、-OR23、-O-C(=O)-R23、-C(=O)-OR23、-C(=O)-NR23(R24)、-NR23-C(=O)-R24、-CN、-SR23、-S-(=O)-R23、または、-S(=O)2-R23を表し、R23、R24は、それぞれ独立して、炭素数1~30のアルキル基、炭素数1~30のアルケニル基、または炭素数6~12の芳香族基を表す。A1およびA2は、上記一般式(1)と同じである。) - 前記A1およびA2が、1,4-フェニレン基である請求項1~4のいずれかに記載のジアリールアミン系化合物。
- 請求項1~6のいずれかに記載のジアリールアミン系化合物と、下記一般式(19)で表される縮合複素環化合物とを含有する組成物。
(式中、Y1は化学的な単結合、-S(=O)-、または-SO2-を表す。
RaおよびRbはそれぞれ独立して、置換基を有していてもよい炭素数1~30の有機基を表す。
ZaおよびZbはそれぞれ独立して、化学的な単結合または-SO2-を表す。
X1およびX2はそれぞれ独立して、水素原子、ハロゲン原子、置換基を有していてもよい炭素数1~10のアルキル基、シアノ基、ニトロ基、-OR25、-O-C(=O)-R25、-C(=O)-OR25、-O-C(=O)-OR25、-NR26(R27)、-NR26-C(=O)-R25、-C(=O)-NR26(R27)、または、-O-C(=O)-NR26(R27)を表す。ここで、R25、R26およびR27はそれぞれ独立して、水素原子、または置換基を有していてもよい炭素数1~20の有機基を表す。
nおよびmはそれぞれ独立して、0~2の整数を表し、nおよびmのいずれか一方は0でない。
また、nおよび/またはmが2のとき、2個のRa同士および2個のRb同士は、互いに同一であっても、異なっていてもよい。) - 前記RaおよびRbがそれぞれ独立して、置換基を有していてもよい直鎖もしくは分岐の炭素数1~20のアルキル基、または置換基を有していてもよいフェニル基である請求項7に記載の組成物。
- 前記ジアリールアミン系化合物と、前記縮合複素環化合物との比が、「ジアリールアミン系化合物:縮合複素環化合物」の重量比率で、30:1~1:30である請求項7~9のいずれかに記載の組成物。
- 請求項1~6のいずれかに記載のジアリールアミン系化合物、または、請求項7~10のいずれかに記載の組成物を含有する老化防止剤。
- ポリマー用老化防止剤である請求項11に記載の老化防止剤。
- ポリマーと、請求項11または12に記載の老化防止剤を含有するポリマー組成物。
- 前記ポリマーが、合成樹脂である請求項13に記載のポリマー組成物。
- 前記ポリマーが、ゴムである請求項13に記載のポリマー組成物。
- 前記ゴムが、アクリルゴムである請求項15に記載のポリマー組成物。
- 前記老化防止剤の含有量が、前記ポリマー100重量部に対して、0.05~30重量部である請求項13~16のいずれかに記載のポリマー組成物。
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| CN201880014211.7A CN110337431B (zh) | 2017-03-03 | 2018-02-22 | 二芳基胺系化合物、抗老化剂以及聚合物组合物 |
| EP18760244.6A EP3590923B1 (en) | 2017-03-03 | 2018-02-22 | Diarylamine-based compound, anti-aging agent, and polymer composition |
| US16/489,834 US11254802B2 (en) | 2017-03-03 | 2018-02-22 | Diarylamine-based compound, anti-aging agent, and polymer composition |
| KR1020197025812A KR102493673B1 (ko) | 2017-03-03 | 2018-02-22 | 디아릴아민계 화합물, 노화 방지제, 및 폴리머 조성물 |
| US17/646,866 US11643522B2 (en) | 2017-03-03 | 2022-01-04 | Polymer composition containing diarylamine-based compound |
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| US17/646,866 Division US11643522B2 (en) | 2017-03-03 | 2022-01-04 | Polymer composition containing diarylamine-based compound |
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| WO2020262495A1 (ja) | 2019-06-28 | 2020-12-30 | 日本ゼオン株式会社 | アクリルゴム、アクリルゴム組成物、およびゴム架橋物 |
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| WO2021192897A1 (ja) | 2020-03-25 | 2021-09-30 | 日本ゼオン株式会社 | アクリルゴム組成物およびゴム架橋物 |
| WO2022049872A1 (ja) * | 2020-09-03 | 2022-03-10 | ユニマテック株式会社 | フェノチアジン誘導体およびアクリルゴム組成物 |
| JP2022090304A (ja) * | 2020-12-07 | 2022-06-17 | ユニマテック株式会社 | フェノチアジン誘導体化合物およびその製造法 |
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| Publication number | Publication date |
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| KR102493673B1 (ko) | 2023-01-31 |
| US11643522B2 (en) | 2023-05-09 |
| CN110337431B (zh) | 2022-08-26 |
| US11254802B2 (en) | 2022-02-22 |
| JP7036107B2 (ja) | 2022-03-15 |
| EP3590923A4 (en) | 2020-08-05 |
| EP3590923A1 (en) | 2020-01-08 |
| EP3590923B1 (en) | 2022-08-03 |
| KR20190126316A (ko) | 2019-11-11 |
| US20200002507A1 (en) | 2020-01-02 |
| JPWO2018159459A1 (ja) | 2019-12-26 |
| CN110337431A (zh) | 2019-10-15 |
| US20220127430A1 (en) | 2022-04-28 |
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