DE1769882A1 - Adhesive system - Google Patents

Description

My files-2212

Anaelderin! National Staroh and Chemical Corporation, 750 Ihird Avenue, New York, USA

Adhesive system The invention relates to an adhesive system.

Metal composite foils, in particular aluminum-paper composite foils, are increasingly being used as packaging and insulating » Material and used for many other purposes. For example, these films are widely used for cigarette packs, insulated boards, head covers, insulated bags, packaging material, preparation serving containers or the like. It is important, the adhesive system for the preparation of these composite materials Properties such as good adhesion to metal surfaces, high linear strength, good processing options, retention of adhesion shows good stability, water resistance, high adhesive speed and balanced rheological properties on aging

Adhesive systems and casein-silicofluoride polymer systems, casein-silicofluoride-neoprene systems and vinyl chloride-casein-silicofluoride systems already used for these composite materials. Although the latter compounds show satisfactory adhesive properties, they are inferior in other respects, so that their effectiveness and usefulness are limited. For example, systems that contain casein are exposed to the inevitable fluctuations of natural products as well as fluctuating costs and delivery difficulties. Systems containing silicon fluoride compounds are currently excluded from use in composite films which are used for applications in which they come into direct contact with food. Vexnw the use of oasein-silicofluoride compounds is limited to the extent that they are essentially an adhesive

00fM4 / 2021

Effect only beige if the pH of the system is below the critical value is 6.0. Furthermore, systems containing neoprene, i.e. polychloroprene, have an unpleasant odor, which is why They are mostly unsuitable for food and packaging purposes.

Another property that is becoming more and more important as composite films produced in increasing HaQe at elevated temperatures and / or are used, the ability of the adhesives used in their manufacture is their advantageous Maintain properties even at these elevated temperatures. These elevated temperatures can 8.B. occur, if one Vänaeverschmelzung used to produce a composite film will. Elevated temperatures can also occur during the end use of the composite film, e.g. when the composite film is used for preparation s-serving container uses v / ira, with one dish in one Laminated film container is packed, heated and served. However, some of the known adhesives are not optimally heat-resistant.

It is therefore the object of the invention to provide an adhesive system which has good adhesive properties over an extensive area Elevated temperatures shows, in particular, the adhesives should be applied quickly to a wide variety of substrates including Adhere to metal fines. Adhesive systems are also to be used to produce heat-resistant metal composite foils.

Adhesive connections with the desired good adhesive properties in an extended area?, - .. higher temperatures are made by using 3entonite clay with a vinyl polymer binder is mixed, i.e. a polyaer that by addition polymerization of at least one ethylene-unsaturated monomer, the present in aqueous emulsion form, is prepared, the binder containing polar · functional groups. If the vinyl polymer binder contains no polar functional groups, the adhesive compound contains water-soluble polymers, which contain the polar functional groups. The resulting adhesive bonds retain their advantageous properties to BU temperatures of around 290 C (550 F). The need the use of bentonite clay and the polar functional parts Groups in the compounds according to the invention can thereby

009814/2021

It will be demonstrated that adhesive systems are made which can be used over a wide range of elevated temperatures and which may lack one or both of these components. Do not show the _t such compounds; nth adhesion, Wasserfeßtigkeit and heat resistance, which are the compounds of the invention gemäfc ei ^ s. The lack of adequate heat resistance occurs particularly in systems that do not contain adequate concentrations of the ilentonite clay.

Regarding the vinyl polishing agents, the connections may be used according to the invention include Komo- and Copolymers with components aie of one or more of the following Monomerklac3en are derived: vinyl esters of carboxylic acids wiι vinyl acetate, vinyl propionate and isopropenyl acetate as well like their halogenated offspring such as vinylnioracetate / vinyl ester ¥ on oC-branched saturated aliphatic monocarboxylic acids such as vinyl pivalate, vinyl halides such as vinyl chloride and vinyl fluoride ι vinylidene halides such as TinyDHenchloridj alkyl esters of O * ·, ^ - unsaturated carboxylic acids such as ethyl acrylate, butyl acrylate and octylakrylatj alkoxy-alkyl esters of o <r, i-unsaturated Carbonic acids such as 2-xthoxyethyl acrylate; Dialkyl esters of o #, fl -unsaturated dicarboxylic acids such as dibutyl maleate, diethyl fumarate and DiBlIyIphthaiati olefin and polyolefin hydrocarbons and their halogenated alcohol blades such as ethylene, propylene, Isobutylene, Butadiene Isoprene and Cnlropreni Styrene and its derivatives like 06-methylstyrene Jwitriie of acrylic and methacrylic acid such as acrylonitrile; and vinyl esters such as vinyl ether, Vinyl ethyl ether, vinyl-2-ethyl-xyl ether and vinyl phenyl ether. Ee Polymers can also be produced by the hydrolysis of polymers from vinyl acetate, e.g. polyvinyl alcohol, euenso like polymers, caused by partial hydrolysis and subsequent acetalization, B.B. Polyvinyl butyral, as aas Po Ij me rb by using it ut-1 aer compounds can be used according to the invention. It should also be noted that the monomers given above yield polymers can that come in either grafted or block polymer form in addition to the usual statiatxsci: disordered polymer form present, i.e. the form in which the polymer has a random shows the disordered distribution of the components, the A.-Köamlinge of his licensing partners.

009884/2021

SAD ORIGINAL

The latter homo- and copolymers can easily be in aqueous Emulsion can be prepared by a free radical initiated emulsion polymerization in a known manner. These emulsions can be either anionic, nonionic or cationic, which depends on the ionic character of the surface agent used to produce them as well as on the ionic character of functional groups, ie the polymer In the preparation of these aqueous emulsions, acids can combine catalysts such as hydrogen peroxide, bensoyl peroxide and potassium persulphate etc. with either anionic ones nonionic or cationic emulsifying agents such as fatty alcohol sulfates, alkylarylsulfonates, dioctyl sodium sulfosuccinates, Poly (axylethylene) ethers and esters, amine derivatives of ethoxylated long-chain fatty acids and polyethylene glycol-terW dodecylthioeetern, etc. can be used. When using for the compounds according to the invention it is desirable that these polymer emulsions have a dry resin content of about 25-65 Gtw .- ^ have.

The second «important characteristic of the adhesive systems according to the Invention resides in the requirement of a specified minimum concentration of polar functional groups in the vinyl polymer binder or in an additional water-soluble polymer. In the present application, the term “functional group *” is used to denote those chemical radicals that contribute to Occurrence on the vinyl polymer binder or on the additional water-soluble polymer can carry out a molecular association between the corresponding polymer and the bentonite clay. to the functional groups. which can be used include} hydroxyl, carboxyl, cyano, glycidyl, alkylol, amide, sulfonyl, sulfinyl, amino, imino, aldehyde and phosphonyl groups as well • such as active hydrogen atoms that are located on carbon atoms that are in a position in close proximity to ethylene unsaturation. As mentioned earlier, these can be functional Groups are an integral part of the basic vinyl poly nerbinders as a result of the use of one or more monomers which contain these polar functional groups in the. Manufacture of the vinyl polymer binder3. E.g. the Hydroxyl groups present from the iu vinyl polymer binders

009884/2021

ORIGINAL

·· 5 ■ ·

dir 4i | Ä-unsaturated carboxylic acids such as hydroxyethyl acrylate. . Hydroxypropylakrylat and Hydroxyäthylniethakrylat are obtained; The carboxyl groups can be obtained from the existing oc, d -unsaturated carboxylic acids such as maleic, fumaric, acrylic, iiethakryl, Itaoon-, and crotonic acid ebtae as well as from monoalkyl esters of 0 ^, ^ - unsaturated dicarboxylic acids such as ethylic acid maleate for the glyoidyl groups the existing glycidyl acrylate and glycidyl methacrylate can be obtained j the alkylol groups can be obtained from the existing N-alkylol derivatives of the amides of the mti , Α -unsaturated carboxylic acids such as to-methylolacrylamide and I-methylol methacrylamide; the amide groups can be obtained from the existing vinyl pyrrolidone as well as from the Amides of the mfyfäixige saturated carboxylic acids such as acrylamide and methacrylamide are obtained, the sulfonyl groups can be obtained from the sulfonic acid derivatives present and their salts such as vinyl sulfonic acid, allyl sulfonic acid, styrene sulfonic acid and the sodium and ammonium salts thereof; the amino groups can be obtained from the existing N-yinylpyridine, dirnethylaminoethyl methacrylate, diethylaminoethyl methacrylate and butylaruinoäthylakrylat. The sulfinyl groups can be obtained from the existing vinyl sulf insäur eabköminlinge; the amino groups can be obtained from the aziridine derivatives of the acrylic and methacrylic esters present, such as 2- (1-aziridinyl) ethyl methacrylate; the ■ cyano groups can be selected from the ovane-substituted alkyl

en
esters of the ethy-falsaturated carboxylic acids such as cyanoethyl acrylate can be obtained, the aldehyde groups can be obtained from the acrolein and methacrolein present, and the phosphonyl groups can be obtained from the vinyl phosphonates present. The comonomers which provide the necessary active hydrogen atoms also include butadiene, isoprene, chloroprene, as well as other conjugated dienes. It can also be seen that compounds, on exposure to higher temperatures in an oxygen atmosphere, produce decomposition products which show the desired functionality, likewise to achieve this

this functionality in the substances according to the invention can be used. These latter compounds belong to Alkoxyalkyl acrylates and methacrylates such as 2-ethoxyethyl acrylate and lertv butyl acrylates and methaloylates. Therefore, from the preceding

009884/2021

BAD ORiGiNAL

previous statements ersiohtlioh that if the required minimum concentration of polar functional groups is to be provided by the vinyl polymer binder, this binder can be either a homo- or copolymer derived from is derived from at least one of the functional monomers indicated above.

Furthermore, if the vinyl polymer binder itself does not have any polar functional groups, these groups may be part of the compounds according to the invention as a result of a smaller one Be proportions of a water-soluble polymer that contains these functional groups. These water-soluble polymers must be completely soluble in the same weight of water and can be a natural or vinyl polymer. Furthermore, the water-soluble polymers unmodified «one or modified by an ohemisal treatment after their initial preparation will. These water-soluble polymers can also be used as a stabilizing hydrooolloid during the polymerisation of the polymer binder to serve·

Among the wasteful polymers that can be used includeι1.Yinylpolymerβ such as polyvinyl alcohol} Polyakryläuref Homo- and copolymers of vinylpyrrolidone poly (vinyl methyl ether / maleic anhydride) vinyl acetate-maleic anhydride copolymer poly (2-sulfonyl methacrylate) as well as the alkali and ammonium salts of these synthetic polymers such as ammonium and i-sodium hydroxide copolymers such as hydrochloride-hydroxy-sodium hydroxide-hydroxyl-polyacrylate-hydroxyl-hydroxyl-hydroxyl-hydroxyl-polyacrylate-hydroxyl-hydrochloride ; and2.natural water-soluble polymers including water-soluble rubbers such as Gum arabic, tragacanth, agar, and dammarharζ j alginates and their derivatives such as propylene glycol alginate; pectin celluloses and their ν synthetic derivatives such as hydroxyethyl cellulose, methyl cellulose and carboxymethyl cellulose; Dextrins; as well as starch descendants and conversion products such as oxidized starches, viscose or synthetic starches, starch ethers, starch esters and inhibited starches in the case of the latter starch derivatives it is important that some of the required functional groups, i.e. of the hydroxyl groups, remain available after derivatization. It should It should be noted that the water-soluble polymers can be added to the aqueous solution of the vinyl polymer afterwards, i.e. after the polymerization, which is used to produce the vinyl

009884/2021

BATH ORIGINAL

polymer binder is used, or one can as before was mentioned in the monomer odor of the polymerization of the Vinyl polymer be present. Be should also point this out will suggest that these water-soluble polymers can be present as optional additives in systems in which the polar functional groups come primarily from the vinyl polymer binder come.

It can therefore be seen that the JQ.betoffBy «systems according to of the invention can consist solely of a bentonite clay mixed with a Yinylpolymerbinder, the polar functional Has groups derived from a functional monomer, which was used in its polymerization. Palis the vinyl poly * Merbindmittel does not have these functional groups, must they are added to the system by one of the above-mentioned water-soluble polymers which contain these functional groups. Ss is also ersiohtlioh that it is also possible to use the Hebetoffeyateme to produce according to the invention when the water-soluble polymer itself is a Yinylpolymer, the polar functional groups, e.g., polyacrylic acid, and that therefore the single polymer component can be dea systems.

You third important component of the adhesives according to the Invention is a bentonite clay · These types of clay are well known and well described in the literature. Bentonite clays are types of clay that have a significant content of montmorillonite minerals to have. In some cases, other clay minerals such as illite and kaolinite may also be present. The composition of the montmorillonite therefore depends on the geological origin of the bentonite. Although many different cations can be present in the multilayer montmorillonite minerals, In larger amounts usually contain only silicon, aluminum, magnesium and iron in the form of II and III salts and lithium. Examples of these minerals are montmorillonite, beidellite, Hontronite, saponite and hectorite. These minerals also differ in the spatial arrangement of their atoms, in their ability to swell by water and in their properties in moist and humid conditions dry condition.

It should be noted that bentonite clays are natural for the manufacture of the adhesive system according to the invention

009884/2021

ßAD ORIGINAL

or can be used synthetically. Furthermore, they can be used effectively regardless of whether they are in the raw, processed, i.e. purified state, in which impurities such as calcium carbonate have been removed, or in a modified state, e.g. as an organically coated montmorillonite, which either by treatment of iontmorillonite by a cation exchange reaction including the exchange of its inorganic cations for organic cations or by modifying the montmorillonite by organic surface-active agents can be produced. Further information on bentonite clays and montmorillonite minerals can be found, for example, in the third edition of "The Chemistry and Physics of Clays" by AB Searle and R, W «Grimohww, 1959 _f Interscience Publiahere, Inc. of New York.

The actual manufacture of the adhesive system according to of the invention can easily be achieved by simply combining the previously prepared vinyl polymer emulsion containing the polar functionalities Contains groups, together with an aqueous bentonite clay suspension with optional additives that may also be used can be carried out · The resulting mixture should then be carefully stirred until it is even Get mixture. Bine impairment of the emulsion stability, that in the case of the binder-clay mixture as a result of the pH value 3 the initial vinyl polymer emulsion can occur through simply adjusting the pH of the emulsion to the pH of the clay suspension can be eliminated. This setting is made by Addition of alkaline reagents such as ammonia, alkali metal hydroxides, Hydroxylamines, etc. made. As already mentioned If a water-soluble polymer is present in the system, this can also be fed to the mortomerization, the IUr the polymer! on des Vinyibolyu ^ rbindera is used, before or after its emulsion polymerisation · If necessary, additional water can be added after the adhesive has been prepared can be added to adjust the <_pn viscosity

To the spice; oi. This adhesive effect to achieve heat resistance, which the Kietr.t, ff systems, according to the invention should have, only the "ru .. -Juegonde Vir ^ lpolyu'-r. binder 0, 5-20 wt. 5t of components, uie of νχη-τ or more of the applicable

00S884 / 2G21

BATH ORIGINAL

possible groups of the functional monomers · If the functional group derived from a water-soluble polymer, should · the water-soluble polymer in the aqueous solution of the ▼ inyl polymer binder at a concentration of about I-405C based on the total weight of the resin dry matter contained therein, i.e. the yinyl polymer solids plus the water soluble ones Polymertrookenstoff, amount to * Therefore leads to insufficient concentration of the functional groups lead to a reduction in the adhesion, the water resistance and the heat resistance of the system according to the invention. Sine excess concentration of the functional On the other hand, groups can lead to poor rheological properties or other undesirable lifting effects. The benton tone in the system should be in one concentration Toa approximately 0.1-1Oji based on the weight of the total resin tarookennaeee, i.e. the vinyl polymer dry matter plus the water soluble Polymer troupe which are present in the emulsion, be. Sin proportion of less than 0.1% by weight of clay leads su insufficient thermal stability of the system, while a Clay concentration above the specified maximum of 10% by weight • Leads to undesirable thickening of the system.

If desired, various optional additives can be added dea system according to the invention can be used. These include foaming agents such as mixtures of metallic soaps and preservatives such as phpnylmercury (II) acetate, thickeners such as methyloellulose, lubricants, plasticizers, oxidizing agents etc.

The adhesive systems according to the invention can be applied to any solid substrates such as metal foils, paper, pap ^ e, clothing, glass fibers, rubber, foamed plastics, asbestos, vulcanized fibers, Hasonite, Hol «, oil-phane and plastic fibers and foils, e.g. made of polyethylene terephthalate, polystyrene, rubber hydrochloride, polyethylene, polypropylene and polyvinyl chloride, are applied. The adhesive syetene according to the invention can also be used for adhesive bonding and for the production of composite materials from the aforementioned documents. As already mentioned, they are particularly advantageous if they are used for the production of metal-paper composite films. They then show a good

009884/2021

BATH ORIGINAL

Adhesion when the pH value changes and at the same time good water and heat resistance. Furthermore, they are free from color, odor and toxic additives and do not have any disadvantageous effects Effect on the metal foils to which they are connected.

The application of this adhesive system can be carried out using any method ¹ ) by which a continuous film of adhesive can be applied to the surface of the respective substrates. The various application devices that can be used include application devices with wound wire and grooved rod, scraper whales, air knives, scraper knives, roller brushes and curtains The & lebatoffsysceme can uit a coating weight jron (1.7-5) g dry matter / m ² underlay ( (1-3) lb / 30000 square feet) can be applied. When bonding backings that have been coated with these compounds, wet bonding methods, ie methods that bond the coated backing before the adhesive dries, are used »

After application and bonding, the resulting body can be dried in any conventional manner, for example by Air drying, forced air oven drying, infrared or radiation heating, steam heating or electric drying. These drying methods are already known and the most suitable drying equipment can be used, depending on the equipment available, the layer weight, etc.

The invention is to be explained in more detail with reference to the following exemplary embodiments. In these exemplary embodiments, all Information about the components based on weight, provided it is not expressly stated otherwise

Example I

This embodiment illustrates the preparation of a variety of adhesive systems in accordance with the invention using different vinyl polymer binders containing different polar functional groups and bentonite clays. Of Execution example also shows the good glue and ware pastry properties of the adhesive systems produced by this Adhesive connections. ·

008804/2021

BATH ORIGINAL

To prepare the mixtures, the proportions of which are listed in the table below, the selected mixture was stirred with stirring aqueous Y ^ nylpolymeremulsion a 10 wt .- ^ - aqueous Clay suspension added. Palis the functional groups of one existing water-soluble polymer, this became the aqueous vinyl polymer emulsion either before or after emulsion polymerization BU their production added. In all The yinyl polymer emulsion was precipitated prior to being mixed with the Clay to a pH of more than 6 by adding a certain Set of Aamoniak. Each of the end products was then carefully stirred to give an even wash.

The adhesive properties and the heat resistance of each mixture wurdqaduyjh production of aluminum composite sheets under Use of the resulting adhesive systems measured. So became

the selected adhesive system was applied to the surface of a piece of aluminum foil with a coating weight of γόη 4 * g / m ^{2 (2.51 tto / 300 square feet).} A piece of 23,6kg ($ 21b) -Kraftpepier was then brought into close ohichteten Plächenberührung with the Jtiebstoffbe- "surface of the film and the resulting composite film was dried at a temperature of 15O ⁰ C (30O ⁰ P) for 5-1üaec. An electrically heated iron was placed on a section of the polishing surface of each composite sheet for 5-15 seconds while the uu ^ e ^ aen was at a temperature of ? .0t> C (400 ⁰ P). Thereafter, dae iron was set at a different area of the film surface of the Verbundfollen a similar period of time, wherein dae & Bu c-ieisen a temperature of 260 ⁰ C (500 °?) Had. After removing the iron after each treatment, the composite foils were observed to determine the extent of the breakage of the riveted connection as well as the formation of bubbles and waviness, ie the deformation and

Establish education in the area of the contact surface of the ironing area and the polishing surface. In the following tables for the execution examples I and II the designation * gu *. ^{n used} for the complete absence of visible waviness and abolition of the adhesive effect, the designation "most satisfied! - lend ¹¹ for existing slight waviness and abolition of the adhesive effect as well as the designation" Schle, -. M ^- "i'ur existing strong waviness ur.o Abolition of the Klei effect.

- 009884/2021

BATH ORIGINAL

Proportion of system components -

12 2

5015OI3 - vinyl acetate! _1Q ,

Butylaorylate aoryleic acid " ^p """ Xerpolyaer Itaulsion with A6Ü Gew.-Ji Harst drymasee

50l50iO, 1-styrene

Butyl acrylate aoryleic acid

terpolymer emulsion

with 45- wt .- * - * 100.1 -

Haritro ckenmaeae

50t50iO, 5 ~ 8tyroli

Butylacr ^ latiAoryl acid-

terpolymer-EBulBion

with 4516 wt .-? t

Haretrookenmaeee - - 100.5 - - -

5Oi50ι3-styreneι

Butyl aorylate!

terpolyaer emulsion

with 46 wt. Jl

Haretrockenmaeae - - - - -

50I5015-styrene * butyl aorylatt aorylaic acid β -

terpolymer Eaulaion

with 46 3ew.-jt

Haritro dctnmaese - - - 105 105 - Synthvtifloher sodium 3.0 3.0 3.0 3.0 0.1 0.5

Kagneaium-Lithium- * ftuorosilikatton *

Heat resistance at
205 ^ü 0 (400 ^ f) Well Well good Good Well Well Heat resistance at
26 <rO (500 ^β ϊ) Well EU
peace
the-
part
lend KU- gUt
fri -
the-
Btel-
lend gat Well until Well

009884/2021

Shares

Components Syen; em - No.

2 a. 2 ISl Jl

50ι50ι0,5βtyroll TOO, 5 -

Butyl aorylate acrylic acid

terpelyeer emulsion

with 45.6 parts by weight

Bar solids

9O $ 1Oi3-tinyl "acetate" - - - Vinyl ester of a 10-kohlenetoffatomigenot-rere branched, saturated t aliphatic carboxylic acid ι acrylic acid terpolinner emulsion with 46.5 Gew.ji hard dry mass

50i50i4-vinyl acetate »-

Butyl aorylate ϊΗ-i-ethylol

aorylamid ^ terpolymer

Bmuleion at 45 Hard solids

50l50i3-Styroli -

Butyl acrylate hydroxyethyl

aorylate / terpolymer emulsion

with 46 wt.

50150; 3-styrene Butyl acrylateίglyoidyl- -aethaorylate ^ terpolymer - Emulsion with 46 wt .- ^ dry bar corn

Synthetic sodium 6.0 3.0 3.0 3.0 3.0 Magne siuia-Id thium-fluorosilicate clay »

if good good good good good 205 * 0

VKnefestigkeit at

2β0 * 0 (500 ^β ?) Good good good «u- good

pacifying

009814/2021

Components

50ι50I3-Vinylacetatι Butylmorylate acrylic acid dlBli

-U-

12 ± 2.

py

with 46 Gt * Haretrbckenaese

1769882 16 ,Proportion of·
System - hr _t 103 Ii 11 103 103

60s40s3-styrene-butadiene-acrylic acid terpolymer emulsion with 49th Qew.-Jt Harstrooken mass

103

91i9 »3-Xiyl acrylate AoryloniTril ili-iitly acrylaaidwterpolymer-emulsion with 47 Cto Earstrockenmaase

-103

Synthetic Natxium-HagneeiuB-Lithiua- ? luoro8ilikattont

3.0

3.0

Prepared, naturally occurring Natriua-Magne aium-Lithiumyiuoroailikatfon " 3.0

With an organic surface finish Medium treated heat ride tone ^ 3.0

Synthetic Heotor Ringtone * 3.0

Vttniefastigkeit with good

2O5 ^Ü C (40O ^ü J)

Well

Well

Well

Well

lOtrmefeetiglceit at

at 26O ⁰ C 1500 ^ö ?) good

Well

Well

Well

009884/2021

COPY

Share gyatem-No "

60140 vinyl acetate ithylaorylatoopolymertouleion with 55 Qi Hari dry β

131

100

18 **.

19 »· 20 ·· 21» ·

50150-StyroliButylacrjr -latcopolymer-BaulBion with 46 wt .- * Harztrockennaeee

Polyvinyl alcohol * 2.0

Poly (methyl vinyl ether / maleic anhydride) *

100

100

100

Ammonium salts of a styrene male inanhy dri d-

Copolymers *

3.0

acid converted, pre-gelatiniei ^ rt ·, -vach-like May starch * 3.0

Gum arabic '

#, 0

Synthetic high sodium 3.0 iluorosilicate clay *

3.0

3.0

3.0

Vitasecurity at 205 ⁰ C (400 ° f)

Well

Well

Well

Well

Heatedness at
260 * 0 (500 ⁰ P) ! rriedi
ι good CO N ft
iT> C at riedi
ill end • «Τ m 'riedi
illenc CJ '609βα4 / 2021 ■ * - «.,
"-I ''

COPY

Xa of the table means

§ You concentration of this component is by weight

total Haretrook mass of the polymer emulsion indicated *

^{# The} functional groups of this system were obtained by adding clay polyvinyl alcohol to the monomer before emulsion polymerization, the polyvinyl alcohol serving as a primary emulsifier.

·· They were functional groups of this system by addition an additional water-soluble polymer is added after emulsion polymerization of the yinyl polymer. The words given in the table above clearly show

that the adhesive systems according to the invention are very good adhesive and

Värnefes have their own properties. Execution example II

This exemplary embodiment explains the necessity of the Use of bentonite clay as a source for the polar functional groups in the adhesive systems according to the invention, among other things to achieve very good adhesive and heat resistance properties.

Adhesive systems have therefore been made with both important components, only one of these components and none of these Contain constituents, and they were prepared and examined in accordance with the Yerfanren described in Example Z

The composition of these adhesive systems and their specific uses are given in the following table »

009884/2021

BATH ORIGINAL

Components ,

Shares SvBtem no.

6th

90150-Yinylaoetat 100 Butylaorylatoopoly- ■ er-Emuleion with 46Weight. «- ji hard drink mass

100 -

50t50t3-Vinylaoetatt Butylflorylar-Aorylsäureterpolyer-Emulsion with 46Vev.- i » Haratrookenmesse

60140-Tinylaoetati Ithylaorylate copolymer emuleion with

ken mass

50:50 styrene »butyl

aorylatoo polymer emulsion with 46öew. - ^ Haratrooken mass Polyvinyl alcohol ^ -

Poly (methyl vinyl ether ^ HaIeinanhyddrid j

Synthetic soda

um-Magnesium-Li thium-plus ο ei3, ikatton *

at 2O5 ⁸ C (4OO °?)

CD Ω

H O O

Heat resistance at 260 ^ö 0 (500 °?)

103 -

103 -

100

3, ü 3.0

- · - 100

2.0 - 2.0 -

- - - 3.0 3.0

- 3.0 3.0 - 3.0

HH Φ φ

H p.

O O

m ο CQ ti

(D H) HH

φ α Pt a

OQ H cf £ (DH) HH

Φ (D P P. ρ, Φ

& cf

CD N

cf a

(D Hj

HH * ->! -> · Φ Φ P Ρ ·

Pi φ

¹ p

003884/2021

In the table

φ Di '· Eonsentration of this component is in weight units

Total dry mass indicated in the polymer emulsion. * The functional groups of this system were given by additions Clay obtained polyvinyl alcohol to the monomer mixture before emulsion polymerization, which was used for polyvinyl alcohol as a primary emulsifier in it.

* ♦ The functional groups of this system have been added an additional water-soluble polymer obtained from emulsion polymerization of the vinyl polymer. The values given in the above color clearly show that the Kl obst off sy stars according to the invention * show life and heat resistance properties which are similar to those of comparable systems, which either have no polar functional groups or no bentonite clay or both are vastly superior

The invention thus specifies adhesive systems, which have very good adhesive and heat resistance properties.

009884/2021

Claims (5)

July 29, 1968 My act 2212 godparents, claims 1. Adhesive system, characterized by a mixture a beatonite clay and an aqueous emulsion of a vinyl polymer binder containing 1. polar functional groups contains or 2. does not contain any polar functional groups, but in the adhesive system together with one opposite the Yinyl polymer binder is a smaller proportion of water-soluble polymer that contains polar functional groups, present ict. That the Vinylpolymeroindeiuittel containing the polar groups contain funktionelien 2. Adhesive system according to claim 1, characterized in that about 0.5-20 wt. -I "of components that are descendants of at least one funktionelien iionomtr. 3. Adhesive system according to claim 1 or 2, characterized in that that about 1-40 ^ of the water-soluble Polymers, based on the weight of the total dry resin mass in the aqueous emulsion in the adhesive system with the Yinylpolyuerbindeuittei, which no polcren functionelien Contains groups are present. 4. Adhesive system according to one of the preceding claims, characterized in that the concentration of bentonite about 0.1-10% by weight is the total dry resin mass in the aqueous emulsion. 5. Cover the underlay with a dry adhesive film that passes through Application of the aqueous adhesive system according to one of the preceding Claims has been made. 6 · Composite material made up of at least two layers, one of which is a metal foil, wherein the layers are adhesively connected by a dried adhesive film which is through Application of the aqueous adhesive system according to one of the claims 1-4 was created. 009884/2021 BATH ORIGINAL