Abstract: The invention relates to an impact modified thermoplastic resin comprising a polymeric impact modifier with a core-shell structure comprising 2-octylacrylate.

Abstract: A modified natural rubber particle having carbon-carbon double bands assigned to multifunctional vinyl monomers graft-copolymerized onto the surface of the modified natural rubber particle, which is prepared by graft-copolymerization of multifunctional vinyl monomers having two or more carbon-carbon double bonds onto natural rubber particles or deproteinized natural rubber particles. One of the methods for producing a modified natural rubber particle includes the steps of: forming inclusion complex of the multifunctional vinyl monomers having two or more carbon-carbon double bonds with a guest-protecting agent to protect at least one of the double bonds of the multifunctional vinyl monomers; graft-copolymerizing the resulting inclusion complex onto natural rubber particles or deproteinized natural rubber particles; and deprotecting the protected double bonds by removing the guest-protecting agent from the obtained graft-copolymer.

Abstract: The present invention relates to structural, radically curable resin compositions suitable for (re)lining containing a. 30-70 wt. % of a resin characterized by (i) a molecular weight Mn between 500 and 3000 and (ii) an acid value between 0 and 30 mg KOH/g resin, and wherein at least 80 % of the total amount of resin is vinyl ester resin, b. 30-70 wt. % of at least one reactive diluent, characterized in that at least 25% of the reactive diluent is a difunctional diluent having a molecular weight Mn between 200 and 500 and the optional monofunctional diluent having a molecular weight Mn between 100 and 200, c. 0.00001-5 wt. % initiator, d. 0.00001-5 wt. % inhibitor further characterized in that the average molecular weight per reactive unsaturation (WPU) of the components (a) and (b) is equal or greater than 190 Dalton and that the amount of styrene in the resin composition is less than 5 wt. % (calculated as wt. % of the total weight of the components (a), (b), (c) and (d)).

Abstract: Provided is a pressure-sensitive adhesive layer for a transparent conductive film having a patterned transparent conductive thin film, which has transparent as the pressure-sensitive adhesive layer for transparent conductive film and can prevent the patterned transparent conductive thin film from degrading the appearance of the conductive film. A pressure-sensitive adhesive layer for a transparent conductive film having a patterned transparent conductive thin film, wherein the pressure-sensitive adhesive layer is made from an acrylic pressure-sensitive adhesive composition containing: 100 parts by weight of an acryl-based polymer obtained by polymerization of a monomer component including an alkyl(meth)acrylate; and 30 to 150 parts by weight of a styrene-based oligomer, the pressure-sensitive adhesive layer has a refractive index of 1.50 or more, the pressure-sensitive adhesive layer has a haze of 2% or less as measured at a thickness of 30 ?m.

Abstract: Glass mats for use in building construction are provided. The mats include chopped glass fibers and a formaldehyde-free-curable binder disposed on the glass fibers. The binder includes a binder selected from polyorganic acid-polyol, starch grafted acrylic styrene and acrylic modified polyvinyl acetate, for example, containing a sufficient amount of a hydrophobic additive to improve the hot wet retention of the mat after five minutes of exposure to 80° C. water by at least about 5%.

Abstract: A porous article which is formed from a polymeric material, in which characteristics of the surface of the article provided by the polymeric material are modified by having grafted to it chains of polymerized vinyl monomer units, in which the chains each comprise a number of units of a first vinyl monomer and include a unit of a second vinyl monomer which is different from the first vinyl monomer. Preferably, the ratio of the number of units of the first vinyl monomer in each chain to the number of units of the second vinyl monomer is not more than about 60. When the number of second vinyl monomer units in each chain is one, the mean number of first vinyl monomer units in each chain will be not more than 60.

Abstract: The invention provides methods for preparing polymers bearing a terminal propionic acid. The method involves first reacting a water soluble and non-peptidic polymer comprising at least one hydroxyl group with a tertiary alkyl acrylate in the presence of a catalyst to form a propionic acid ester of the polymer, wherein the polymer has a weight average molecular weight of at least about 10,000 Da; and then treating the propionic acid ester of the polymer with a strong acid to form a propionic acid of the polymer.

Abstract: Disclosed is a thermoplastic resin composition having excellent impact resistance at a low temperature, while maintaining high transparency; this thermoplastic resin composition is obtained by compounding an impact resistance improver into a thermoplastic resin, the impact resistance improver being composed of a graft copolymer which is obtained by polymerizing a vinyl monomer component in the presence of a polymer mixture containing a polymer having butadiene units as an essential component and a polymer having styrene units as an essential component, the polymer mixture containing 45 to 65% by mass of the butadiene units and 35 to 55% by mass of the styrene units.

Abstract: Acrylic compositions which can be processed into thermoformable acrylic sheet material with variegated non-homogeneous granite appearance are disclosed. The acrylic compositions comprise a matrix of polymethyl methacrylate having dispersed within it particles of a thermoplastic such as polymethyl methacrylate and one or more comonomers wherein the thermoplastic is in the shape of thin wafers 0.05 to 9.53 mm thick, 0.18 to 12.8 wide and 0.18 to 7.62 mm long.

Abstract: The invention relates to an impact additive of the core/shell type for thermoplastic polymers. This impact additive comprises a crosslinked elastomeric core based on n-alkyl acrylate and a shell made of poly(alkyl methacrylate) grafted onto said core.

Abstract: A fluorescent article is disclosed comprising a polymer matrix comprising a polymer having in its backbone repeating units of a U.V. light absorbing moiety, or a moiety capable of being transformed by photo-Fries rearrangement into a U.V. light absorbing moiety, the matrix further comprising a fluorescent dye. The matrix affords surprisingly improved fluorescence protection as compared to prior fluorescent articles having only U.V. light absorbing additives.

Abstract: A crosslinkable composition of a polymeric thermoplastic and/or elastomeric material which is susceptible to scorching when processed at elevated temperatures, prior to crosslinking, in the presence of a free radical initiator, is protected against such scorching by the incorporation therein of a mixture of at least one hydroquinone compound and a sulfur accelerator. This mixture may also contain at least one monomeric allylic, methacrylic, acrylic or diene type coagent. The mixture exhibits a synergistic effect resulting in improved scorch protection for peroxide cured systems when compared with the protection afforded by the components singly.

Abstract: A vinyl polymer having, at a molecular chain terminus, a structure represented by the general formula 1: 1

Abstract: Structurally isomeric poly(alkyl ethylenes) with H and Y structures, polymeric bridging segments and a Y index of 2×10−3 to 8×10−3 (kJ/mole/degree), have decreased instability in the melt and more advantageous processing properties. The structurally isomeric poly(alkyl ethylenes) with H and Y structures are synthesized by an irradiating method, a melt reaction method or a solid phase reaction method by reacting poly(alkyl ethylenes) with 0.05 to 5% by weight of monofunctional, difunctional and polyfunctional monomers, optionally in the presence of peroxides. The structurally isomeric poly(alkyl ethylenes) are suitable for producing films, sheets, panels, coatings, pipes, hollow objects and foams.

Abstract: Structurally isomeric poly(alkyl ethylenes) with H and Y structures, polymeric bridging segments and a &PSgr; index of 2×10−3 to 8×10−3 (kJ/mole/degree), have decreased instability in the melt and more advantageous processing properties.

Abstract: The use of graft copolymers obtainable by grafting a) polyalkylene oxides with b) at least one monomer selected from the group of b1) C1-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; b2) vinyl esters of aliphatic C1-C30-carboxylic acids; b3) C1-C30-alkyl vinyl ethers; b4) N—C1-C12-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids; b5) N,N—C1-C12-dialkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids as solubilizer.

Abstract: A multistage core-shell particle consisting of a core, a first shell and optionally a second shell, substantially free from vinylically unsaturated compounds having at least two equally reactive double bonds, wherein: (i) the core contains a first (meth)acrylic polymer, (ii) the first shell contains a low Tg polymer comprising 0 to 25% by weight of a styrenic monomer and 75 to 100% by weight of a (meth)acrylic monomer, the (meth)acrylic monomer capable of forming a homopolymer having a glass transition temperature (Tg) in the range from −75 to −5 C, and which first shell represents more than 65% by volume of the combined volume of the core and first shell; (iii) the second shell, when present, contains a second (meth)acrylic polymer which may be the same or different from the first (meth)acrylic polymer, and (iv) the core and first shell together contain from 0.5 to 1.0% by weight of a graft-crosslinker.

Abstract: There is provided a modified ethylene resin produced by subjecting (a) an ethylene resin to modification with (b) an .alpha.,.beta.-unsaturated carboxylic ester having a hydrocarbon-terminated polyalkylene oxide chain, and with (c) an aromatic vinyl compound and/or (d) an ester of an .alpha.,.beta.-unsaturated carboxylic acid with an aliphatic alcohol.There is also provided an ethylene resin composition comprising: (A) 80 to 99.9% by weight of a modified ethylene resin produced by subjecting (a) an ethylene resin to modification at least with (b) an .alpha.,.beta.-unsaturated carboxylic ester having a polyalkylene oxide chain; and (B) 20 to 0.1% by weight of a surfactant.

Abstract: A graft copolymer containing anhydride groups is made by (1) making a graft copolymer comprising a backbone of a propylene polymer material having graft polymerized thereto polymerized monomers selected from the group consisting of (a) at least one acrylic acid substituted with a 1-3 C alkyl group and (b) a mixture of at least one of these substituted acrylic acids and a vinyl compound capable of copolymerizing therewith, wherein the total amount of polymerized monomers is about 20 parts to about 240 parts per hundred parts of the propylene polymer material and the amount of the substituted acrylic acid is 60 mole % or more of the polymerized monomers, and (2) heating the graft copolymer to a temperature of about 170.degree. C. to about 300.degree. C. to dehydrate the acid groups in the graft copolymer to form anhydride groups.

Abstract: The present invention is block copolymer of the formulas I and II(PA).sub.x (PB).sub.y X (I)X(PB).sub.y (PA).sub.x (PB).sub.y X (II)wherein PA is an ethylenically unsaturated monomer, and PB is a cationically polymerizable monomer that can be initiated with an alkyl halide or without catalysts, x is 4 to 500,000 and y is from 2 to 500,000 and X is a halogen atom. The present invention also provides a method for making a block copolymer of the formulas I and II(PA).sub.x (PB).sub.y X (I)X(PB).sub.y (PA).sub.x (PB).sub.y X (II)wherein PA is an ethylenically unsaturated monomer, and PB is a cationically polymerizable monomer that can be initiated with an alkyl halide, x is 4 to 500,000 and y is from 2 to 500,000 and X is a halogen atom. The reaction is initiated by an atom transfer radical polymerization of the PA monomer with an initiator to produce a polymer of the formulas (III) or (IV)(PA).sub.x X (III)X(PA).sub.x X (IV)wherein X is a halogen atom.

Abstract: Graft polymers are obtainable by free radical polymerization of(A) monomers or monomer mixtures comprising(a) from 1 to 100% by weight of N-vinylcarboxamides of the formula ##STR1## where R.sup.1 and R.sup.2 are each H or C.sub.1 -C.sub.6 -alkyl, (b) from 0 to 99% by weight of other monoethylenically unsaturated monomers copolymerizable with the monomers (a) and(c) from 0 to 5% by weight of monomers having at least two ethylenically unsaturated, nonconjugated double bonds in the molecule,in the presence of(B) polymers which contain units of vinyl esters of saturated C.sub.1 -C.sub.

Abstract: A resin composition for sealing liquid crystal cells which contains as essential components a rubber-modified unsaturated compound obtained by grafting a monomer having at least one polymerizable ethylenically unsaturated bond in a molecule with at least one rubber selected from acrylic rubber, silicone rubber, urethane rubber and conjugated diene rubber, and a coupling agent, a filler and a photopolymerization initiator. The rubber contained in the rubber modified unsaturated compound has a particle diameter of 0.2-5 .mu.m and a number average molecular weight of 1000-100,000, and the rubber content in the compound is 0.5-45% by weight based on the rubber modified unsaturated compound.

Abstract: Particulate elastomeric graft polymers which are suitable for improving the quality of macromolecular base materials B consist ofa) a grafting core comprising an elastomeric polymer P.sub.K, the particles having a mean particle diameter of from 1 to 150 .mu.m, andb) one or more shells, the outer shell S.sub.a consisting of a polymer P.sub.a which is compatible or partly compatible with the base material B.

Abstract: A rubber compound comprising a fluorine rubber component and an acrylic rubber component is produced by adding an acrylic monomer to an aqueous emulsion of fluorine-containing elastomer obtained by emulsion polymerization, using a fluorine-containing surfactant, followed by radical polymerization reaction. The obtained rubber compound can satify both of vulcanization moldability and heat aging resistance, and is at a lower cost than the expensive fluorine rubber.

Abstract: A thermoplastic molding composition which contains (i) a grafted copolymer rubber having a grafted phase of styrene-acrylonitrile phase and a crosslinked (meth)acrylate-acrylonitrile substrate, and (ii) an ungrafted, uncrosslinked SAN having a number average molecular weight of about 20,000 to 100,000 is disclosed. The composition which is further characterized in that it contains no additional grafted copolymer rubber based on crosslinked (meth)acrylate-acrylonitrile substrate and in that the grafted copolymer rubber is present in particulate form where the particles have a monomodal size distribution and a weight average particle size of 0.05 to 0.5 microns exhibits improved mechanical properties.

Abstract: Particulate graft copolymers A) are composed ofa.sub.1) from 5 to 70% by weight, based on A), of a grafting base having a glass transition temperature of less than 10.degree. C. and based ona.sub.11) from 50 to 99.94% by weight, based on a.sub.1), of at least one alkyl acrylate where the alkyl radical is of 1 to 30 carbon atoms,a.sub.12) from 0 to 49.9% by weight, based on a.sub.1), of a further monounsaturated monomer copolymerizable with b.sub.11) anda.sub.13) from 0.01 to 5% by weight, based on a.sub.1), of polyfunctional crosslinking monomers,a.sub.2) from 20 to 85% by weight, based on A), of a stage polymerized in the presence of component a.sub.1) and comprisinga.sub.21) from 95 to 100% by weight, based on a.sub.2), of at least one monomer having a refractive index n.sub.D.sup.20 of more than 1.51 anda.sub.22) from 0 to 5% by weight, based on a.sub.2), of a polyfunctional, crosslinking monomer anda.sub.

Abstract: A process for producing modified cross-linked polymer particles which comprises polymerizing 0.01 to 900 parts by weight of (B) a monomer component containing 50% by weight or more of at least one member selected from the group consisting of aromatic monoalkenyl compounds, acrylic acid esters, methacrylic acid esters, fluoroalkyl acrylates, fluoroalkyl methacrylates, unsaturated carboxylic acids, conjugated diene compounds, vinyl esters and organosilane compounds in the presence of 100 parts by weight of (A) cross-linked polymer particles obtained by polymerizing a monomer mixture comprising 50% by weight or more of at least one cross-linking monomer selected from the group consisting of divinylbenzene, ethylene glycol dimethacrylate and trimethylolpropane trimethacrylate.

Abstract: The invention relates to an impact additive of the core/shell type for thermoplastic polymers.This impact additive comprises a crosslinked elastomeric core based on n-alkyl acrylate and a shell made of poly(alkyl methacrylate) grafted onto the said core.

Abstract: Emulsion graft copolymers are composed ofA) from 5 to 18% by weight of a first stage comprisinga.sub.1) from 85 to 99% by weight of methyl methacrylate,a.sub.2) from 1 to 15% by weight of C.sub.1 -C.sub.8 -alkyl acrylate,a.sub.3) from 0 to 2% by weight of allyl methacrylate anda.sub.4) from 0 to 3% by weight of further di- or polyfunctional comonomers,B) from 25 to 35% by weight of a second stage comprisingb.sub.1) from 10 to 25% by weight of vinylaromatic monomers,b.sub.2) from 75 to 90% by weight of C.sub.1 -C.sub.20 -alkyl acrylate andb.sub.3) from 0 to 3% by weight of allyl methacrylate,C) from 30 to 40% by weight of a third stage comprisingc.sub.1) from 15 to 27% by weight of vinylaromatic monomers,c.sub.2) from 73 to 85% by weight of C.sub.1 -C.sub.20 -alkyl acrylate andc.sub.3) from 0 to 3% by weight of allyl methacrylate andD) from 15 to 30% by weight of a fourth stage comprisingd.sub.1) from 85 to 96% by weight of methyl methacrylate,d.sub.2) from 3.8 to 10% by weight of C.sub.1 -C.sub.

Abstract: The present invention is directed to a powdered coating composition which includes a carboxyl terminated polyester, epoxy compounds and an onium catalyst which provide coatings with outstanding properties when cured at low temperatures.

Abstract: The invention relates to comb polymers based on olefin copolymer macromonomers. Preferred comb polymers are copolymers of optionally hydrogenated olefin copolymer macromonomers of formula I ##STR1## wherein R' is hydrogen or methylR.sub.1 is the organic residue of a lithium-organic compound,[A] is a segment formed by 1,4-addition of butadiene potentially substituted with a C1-C6 alkyl residue[A'] is a segment formed by vinyl addition of butadiene potentially substituted with a C1-C6 alkyl residueand n+m stands for an integer of from 7 to 3,000, with (meth)acrylic ester monomers of formula II ##STR2## wherein R' is hydrogen or methyl, andR.sub.2 is an alkyl residue with 1 to 26 carbon atoms.

Abstract: There are disclosed a styrenic copolymer which comprises at least one structural unit represented by the general formula (I) ##STR1## and a structural unit represented by the general formula (II) ##STR2## or a structural unit represented by the general formula (IX) ##STR3## wherein the symbols are each as previously defined in the specification, the structural unit (II) or (IX) being contained in an amount of 0.01 to 99.9 mol %; and a process for the production of the above copolymer.The above styrenic copolymer has a high degree of syndiotactic configuration in the stereoregularity of the main chain of the structural unit (I) as well as adhesivity and compatibility with a resin of a different type.

Abstract: Degraded molecular weight copolymers of ethylene alpha-olefin are provided. The ethylene alpha-olefin copolymers, before degradation, are characterized by having a narrow molecular weight distribution and are comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains. The degraded copolymers are useful as viscosity index improvers for oils.

Abstract: A resin composition including (A) 50 to 99% by weight of polycarbonate and (B) 1 to 50% by weight of a graft-copolymer; the graft copolymer (B) prepared by graft-polymerizing a monomer mixture (2) containing mainly 40 to 100% by weight of a C.sub.1 to C.sub.6 alkyl acrylate onto a rubber polymer (1) prepared by copolymerizing 60 to 100% by weight of a C.sub.6 to C.sub.10 alkyl acrylate, and small amounts of a crosslinking compound and a graftlinking monomer. The resin composition is remarkably excellent in impact strength at low temperature as well as excellent in thermal stability and weatherability.

Abstract: Disclosed are (1) a water-dispersible resin composition prepared by a process comprising; (I) reacting a silane monomer (A) having hydrolytic functional group and/or silano group and polymerizable unsaturated bond with a vinyl monomer (B) in an aqueous medium to obtain a three-dimensionally crosslinked particulate polymer, (II) reacting the particulate polymer with the silane monomer (A) and/or an allyl acrylate or allyl methacrylate (C), and (III) copolymerizing the resulting reaction product with a vinyl monomer component comprising a carboxyl-containing vinyl monomer (D), followed by neutralizing the carboxyl group; (2) a water-dispersible coating composition comprising a crosslinking agent and the water-dispersible resin composition prepared using a hydroxyl-containing vinyl monomer and another vinyl monomer as the vinyl monomer (B) in the step (I), and (3) a coating method characterized by using as a base coat composition a water-dispersible coating composition comprising the foregoing water-dispersible

Abstract: The invention relates to a heat-sealing adhesive, which comprises a mixture of:a) 20-60% by weight of nonadhesive (meth)acrylic acid ester-(meth)acrylic acid copolymers, which contain (meth)acrylic acid ester units with 2-8 carbon atoms in the alcohol component and, relative to these copolymers, 1-10% by weight of (meth)acrylic acid, with a melting temperature in the range of 115 to 150 and a K value according to Fikentscher in the range of 70 to 110 (measured according to DIN 51562 in tetrahydrofuran),b) 10-50% by weight of self-adhesive acrylic acid esteracrylic acid copolymers, which contain acrylic acid ester units with 2-8 carbon atoms in the alcohol component and, relative to these copolymers, 1-10% by weight of acrylic acid, with a glass transition temperature T.sub.G in the range of -45.degree. to -10.degree. C., a K value according to Fikentscher in the range of 70 to 120 (measured according to DIN 51562 in tetrahydrofuran) and a softening temperature in the range of 50.degree. to 100.degree. C.

Abstract: Emulsion graft copolymers composed ofa) 2-10% by weight of a core composed of80-99.99% by weight of methyl methacrylate (I),0.01-5% by weight of allyl methacrylate (II),0-19.99% by weight of other monofunctional comonomers (III) and0-3% by weight of other di- or polyfunctional comonomers (IV),b) 15-50% by weight of a first shell composed of60-89.99% by weight of a C.sub.1 -C.sub.20 -alkyl acrylate (V),10-39.99% by weight of a vinylaromatic monomer (VI),0.01-5% by weight of II,0-10% by weight of I and/or III,0-3% by weight of IV,c) 5-20% by weight of a second shell with a composition as indicated under (a),d) 15-50% by weight of a third shell with a composition as indicated under (b),e) 15-30% by weight of a fourth shell composed of80-99.95% by weight of I,0.05-2% by weight of a regulator (VII) and0-19.95% by weight of III,are suitable as additives to increase the impact strength of thermoplastic compositions.

Abstract: Improved plasticizer resistant pressure sensitive hot melt adhesive compositions are prepared by incorporating in the adhesive polymer, tackifying resin and oil 5 to 70% by weight of the adhesive of a core shell modifier comprising a crosslinked rubbery core and a glassy thermoplastic polymer shell, the core being crosslinked by the presence therein of up to 5% by weight of a polyunsaturated monomer having two or more non-conjugated sites of unsaturation of unequal reactivity.

Abstract: An oriented elastomeric filament spun from a thermoplastic elastomeric material selected from the group consisting of a block copolymer of polybutylene terephthalate and polytetramethylene glycol, a block copolymer of polybutylene terephthalate/polybutylene isophthalate and polyethylene glycol/polypropylene glycol, a block copolymer of polybutylene terephthalate/polyhexene terephthalate and polytetramethylene glycol, and a block copolymer of polyurethane and polytetramethylene glycol, the mole fraction of the polybutylene terephthalate, polybutylene terephthalate/polybutylene isophthalate and polybutylene terephthalate/polyhexene terephthalate in the block copolymers is less than 0.5, the elastomeric filament is further oriented after the spinning by stretching at temperatures between 20.degree. C. to 120.degree. C.

Abstract: Radiation curable compositions useful as coatings for wood, metal, glass, fabric, paper, fiber and plastics are made from copolymers of 4-hydroxystyrene and an alkadiene or an allyl ester of an ethylenically unsaturated acid blended wit ethylenically unsaturated compounds.

Abstract: Solvent-resistant resin blends with a wide variety of desirable impact and tensile properties are prepared from a polyphenylene ether having a low proportion of unneutralized amino nitrogen, a mixture of a poly(alkylene dicarboxylate) and a polyarylate, and, optionally, at least one elastomeric polyphenylene ether-compatible impact modifier.

Abstract: The weather and UV-light resistance of polyacetal resin compositions is improved by incorporating into polyacetal resin a stabilizing package comprised of at least one stabilizing agent selected from benzotriazoles, benzophenones, aromatic benzoates, cyanoacrylates, oxalanilides, and hindered amines, and an acylate resin selected from homopolymers or copolymers of acrylic or methacrylic acid, and ester derivatives thereof.

Abstract: A polymer prepared by subjecting to conditions of radical graft polymerization a copolymer of an .alpha.-olefin and an aliphatic nonconjugated diene and a monomer that is capable of radical polymerization with said copolymer is described. This polymer has high miscibility with a dissimilar resin and has a high practical value for use as a compatibilizing agent in blending two or more resins.

Abstract: Improved core-shell polymers having an alkali-insoluble core and an alkali-soluble shell are prepared by emulsion polymerization of the core-shell polymers utilizing compounds which chemically graft the core and shell together. The core-shell polymers exhibit improved solvent stability, water resistance, heat resistance and rheology. The polymers are useful in application such as inks, coatings and varnishes, floor polishes, leather treatment, cement formulations, and as a seed for further emulsion polymerization.

Abstract: Radiation curable compositions useful as coatings for wood, metal, glass, fabric paper, fiber and plastics are made from copolymers of p-acetoxystyrene and another monomer which is an alkadiene or an allyl ester of a polymerizable ethylenically unsaturated acid blended with ethylenically unsaturated compounds.

Abstract: A highly water-absorptive optical material obtained by saponification for hydrophilic treatment of a copolymer composed essentially of:(A) from 2 to 30 parts by weight of a (meth)acrylate polymer having at least one polymerizable group per molecule on an average obtained by copolmerizing (a) at alkyl (meth)acrylate monomer and (b) a monomer having at least two polymerizable groups per molecule, as the main components, and(B) from 70 to 98% by weight of a fatty acid vinyl ester.

Abstract: A method for radical cross-linking or organic polymers, is disclosed which uses a cross-linking enhancer of the following formula ##STR1## wherein R is alkenyl or alkynyl;R.sup.1 is alkylene, alkenylene, alkynylene or --(R.sup.2 --O).sub.m --R.sup.2 --, R.sup.2 is CH.sub.2, (CH.sub.2).sub.2, (CH.sub.2).sub.3 or CH.sub.2 --CH(CH.sub.3), and m is 1 to 50; and n is 1 to 10.

Abstract: A curable resin composition which comprises (1) a copolymer composed of an aminoalkyl acrylate and/or aminoalkyl methacrylate and an ethylenically unsaturated monomer being formulated with (2) a compound having at least two acryloyl groups in the molecule.The composition can be cured at low temperatures in the range of ordinary temperature to 120.degree. C., and therefore advantageously used for the formation of coating films in the application fields, such as plastics, wood and concrete, where heat treatment cannot be performed. Also, the composition which exhibits excellent adherence toward various kinds of substrates can be used as adhesives and different kinds of primers, as well. Furthermore, the composition can provide coating films that excel in terms of water resistance, weathering resistance and solvent resistance, and therefore be utilized for overpaints, etc.

Abstract: The invention relates to an impact additive of the core/shell type for thermoplastic polymers. This impact additive comprises a crosslinked elastomeric core based on n-alkyl acrylate and a shell made of poly(alkyl methacrylate) grafted onto the said core.

Abstract: The weather and UV-light resistance of polyacetal resin compositions is improved by incorporating into polyacetal resin a stabilizing package comprised of at least one stabilizing agent selected from benzotriazoles, benzophenones, aromatic benzoates, cyanoacrylates, oxalanilides, and hindered amines, and an acylate resin selected from homopolymers or copolymers of acrylic or methacrylic acid, and ester derivatives thereof.