Abstract: A polymer composition is disclosed comprising (A) a first grafted acrylate rubber substrate having an average rubber phase particle size of from about 0.05 to about 0.2 micron; (B) a second grafted acrylate rubber substrate having an average rubber phase particle size of from about 0.2 to about 2 microns; and (C) a matrix polymer wherein each of the first and second rubber substrates are grafted with (i) a vinyl aromatic monomer; (ii) an unsaturated nitrile monomer; and (iii) optionally a compatible polymerizable comonomer based on the total weight of the grafted rubber substrate wherein at least one of the acrylate rubber substrates is a copolymer of from 83 to 98 percent by weight of an acrylate monomer and from 17 to 2 weight percent of an unsaturated nitrile monomer based on the total weight of the acrylate nitrile monomer copolymer rubber; and wherein the composition has an Izod impact value of at least 80 Joules/meter when tested at 23.degree. C. according to ASTM D-256 using a test specimen of 6.35 cm.

Abstract: Compositions which have substantial weatherability and impact resistance comprise a substantially uniform physical blend of an uncross-linked acrylonitrile/styrene copolymer and a cross-linked alkyl acrylate/graft (meth)acrylate copolymer. Methods for making such compositions include forming a substantially uniform physical blend of such copolymers. The compositions preferably are substantially free of cross-linked acrylonitrile/styrene copolymer.

Abstract: Paintable thermoplastic polyolefin compositions are disclosed which comprise (i) about 20 to about 70 wt % of at least one graft-modified polypropylene, (ii) about 10 to about 40 wt % of at least one nongrafted or graft-modified homogeneously branched linear ethylene polymer, ethylene-propylene monomer rubber, ethylene-propylene-diene monomer rubber, heterogeneously branched linear ethylene polymer, styrene block copolymer, or a combination thereof and (iii) about 5 to about 50 wt % of an interpolymer of ethylene and an .alpha.,.beta.-unsaturated carbonyl copolymer, e.g. a copolymer of ethylene and acrylic acid. The polypropylene and, optionally the homogeneously branched linear ethylene polymer, ethylene-propylene monomer rubber, ethylene-propylene-diene monomer rubber, heterogeneously branched linear ethylene polymer, and styrene block copolymer are grafted with an unsaturated organic compound containing at least one site of ethylenic unsaturation and at least one carbonyl group, e.g. maleic anhydride.

Abstract: The invention provides a pressure-sensitive adhesive composition for medical applications comprising a blend of at least two components comprised of about 5 to about 95% by weight of a first component comprised of at least one acrylic pressure-sensitive adhesive and about 5 to about 95% by weight of a second component comprised of either (a) at least one elastomer with a tackifying resin, or (b) at least one thermoplastic elastomer, wherein the resulting pressure-sensitive adhesive demonstrates a T.sub.0 of at least 1 N/dm and a T.sub.48 of less than 12 N/dm when adhered to skin. The pressure-sensitive adhesive composition is prepared either in the presence of a solvent or is alternatively prepared by melt blending. A method of preparing such an adhesive is also disclosed.

Abstract: Metal sparkles having one or more colors dispersed throughout a translucent resin at a concentration which eliminates the appearance of scratches and scuff marks on the resin surface. A pigment may be used in the translucent resin to yield a variety of decorative colors to create matching containers and utensils. The metal sparkle concentration in the translucent resin contains on an average 11/2%-3% metal sparkles by weight and 0.25%-1% color by weight. The sparkle concentration may be used at a letdown ratio of 4% resulting in a composition having an average of 0.06%-0.12% sparkles by weight and 0.01%-0.04% color by weight. The sparkles are random cuts of multi-colored aluminum having an average size of 1/64" (0.015) and are manufactured from the thinnest standard sheets of aluminum which are polished to a mirror-like surface of brilliant reflectivity.

Abstract: The present invention relates to a multilayer film having at least one layer substantially formed from thermoplastic polyurethanes, and at least one further layer, formed from an olefin-based polymer coupling agent, which contains maleic anhydride as a formulation component and the Vicat softening temperature of which, measured to ASTM D 1525, is less than 60.degree. C.

Abstract: A process for efficiently manufacturing polyarylene sulfide copolymer in which polymers are well dispersed and which copolymer exhibiting superior mechanical properties. The process comprises reacting a polyarylene sulfide resin (A) and an amination agent (B) in a non-protonic organic solvent (C), and copolymerizing the resulting amino polyarylene sulfide resin (A') and a reactive elastomer (D) in a non-protonic organic solvent (C'), thereby obtaining a polyarylene sulfide resin (A") with the elastomer dispersed in the resin matrix.

Abstract: A method for particles agglomeration and enlargement of a diene type polymer rubber latex, which comprises subjecting a diene type polymer rubber latex produced by emulsion polymerization, to particles agglomeration and enlargement to obtain a particles-enlarged diene type polymer rubber latex (A), wherein the particles enlargement is allowed to take place by agglomeration based mainly on Brownian coagulation; a graft copolymer (B) of a particles-enlarged diene type polymer rubber latex (A) obtained by the above method; and a thermoplastic resin composition comprising said graft copolymer (B).

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: A blend and a process for producing that blend in which a high ethylene content ethylene-propylene polymer and a lower ethylene content ethylene-propylene polymer are subjected to simultaneous blending and shearing to reduce their molecular weights and molecular weight distribution. The sheared blend of polymers can function as a shear stable dispersant viscosity index improver with improved lower temperature properties or the hydrocarbon base for multifunctional for viscosity index improvers, motor fuel additives or polymeric dispersants.

Abstract: An ethylene/.alpha.-olefin copolymer composition including (I) a graft-modified ethylene/.alpha.-olefin copolymer composition and (II) a polyolefin. The graft-modified composition is prepared by graft copolymerizing an ethylene/.alpha.-olefin copolymer with a polar monomer. The ethylene/.alpha.-olefin copolymer composition includes first and second ethylene/.alpha.-olefin copolymers. The copolymers are each prepared in the presence of a polymerization catalyst containing (a) an organoaluminum oxy compound and (b) for the first ethylene/.alpha.-olefin copolymer at least two kinds, and for the second ethylene/.alpha.-olefin copolymer one kind, of compounds of Group IV transition metals of the periodic table containing a ligand having a cyclopentadienyl skeleton. The graft-modified ethylene/.alpha.-olefin copolymer composition is blended with a polyolefin, such as by mechanical or solution blending, at a weight ratio (I) to (II) of 1:99 to 99:1.

Abstract: A styrenic thermoplastic resin composition comprising a mixture of: (A) 50-90 wt % of a styrenic polymer; (B) 5-35 wt % of a chlorinated polyethylene; (C) 5-35 wt % of a modified ethylene-propylenic rubber; and (D) 0-10 wt % of vinyl graft copolymer has superior weather resistance and mechanical properties such as impact strength and tensile properties. The resin composition also provides improved layer peeling tendency which is one of the most troublesome problems in conventional resins such as acrylonitrile-chlorinated polyethylene-styrene resins.

Abstract: This invention relates to impact-resistant thermoplastic moulding compositions based on a graft rubber, a thermoplastic resin and a small quantity of a free acid-functional nitrile rubber.

Abstract: Shaped articles produced from thermoplastic molding materials which containA) from 30 to 99.8% by weight of a thermoplastic styrene polymer ofB) from 0.1 to 70% by weight of a graft polymer having an average particle diameter d.sub.50 of less than 300 .mu.mC) from 0.1 to 70% by weight of a particulate polymer as a dulling agent.

Abstract: A resin composition is disclosed, which comprizes (I) a graft copolymer using a medium-size rubber particles grown by an acid-group-containing latex, (II) a graft copolymer using small-size rubber particles, (III) a styrene-acrylonitrile copolymer, and/or (IV) a styrene-maleimide copolymer, said resin composition containing 5-40 weight % of rubber. The resin composition is not only superior in impact strength, planar impact strength in particular and gloss, but is favorable in moldability and heat resistance.

Abstract: Thermoplastic polyolefin compositions of a substantially crystalline polyolefin that is a homopolymer of ethylene, propylene or butylene or a copolymer of propylene and a C.sub.3 -C.sub.10 alpha-olefin; about 10% to 50% by weight of a first substantially amorphous polyolefin of a terpolymer of ethylene with a C.sub.3 -C.sub.10 alpha-olefin and a diene monomer and having a Mooney Viscosity (ML.sub.1+4, 100.degree. C.) of between about 10 and about 120; optionally, a copolymer of ethylene and a C.sub.3 -C.sub.10 alpha-olefin may be present; and about 1 to 20% by weight of a second substantially amorphous polyolefin having a number average molecular weight of between about 1,000 and 15,000 and including (a) a copolymer of ethylene with a C.sub.3 -C.sub.10 alpha-olefin; (b) a terpolymer of ethylene with a C.sub.3 -C.sub.10 alpha-olefin and a diene monomer; (c) a block copolymer that includes blocks of a C.sub.3 -C.sub.

Abstract: The impact resistance of PVC compounds has been shown to be improved by blending with a polybutene polymer. Enhanced thermal stability was also unexpectedly improved with the addition of the polybutene polymer.

Abstract: The invention encompasses a new methacrylate resin blend composition, and a method of making the blend composition, having improved solvent craze resistance. The new blend composition contains a methacrylate matrix resin, particles of a single layer polymer, and, optionally, an acrylic multi-layer polymer. Particles of the single layer polymer derived from 50% or more methyl methacrylate, and having weight average molecular weight (Mw) at least 120% of the Mw of the methacrylate matrix resin component of the blend, the particles having a diameter of from 50 to 500 nanometers, have been discovered to confer a solvent craze resistance value to the methacrylate resin blend which is at least twice the solvent craze resistance value of the methacrylate resin absent particles of the single layer polymer. Solvent craze resistance of the blend may be improved by as much as 10-fold or more over the solvent craze resistance of the methacrylate matrix resin alone.

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 relates to bonding resins having excellent adhesion to polar polymers, particularly ionomers, acid copolymers and ethylene vinyl alcohol copolymer. These resins preferably contain: 1) an ethylene polymer or copolymer (ungrafted, grafted or partially grafted); 2) a grafted elastomer; and 3) optionally, an ethylene alpha olefin copolymer which is wholly or partially grafted. Preferred grafting comonomers include maleic anhydride and derivatives thereof.

Abstract: Environmental etch resistant coatings are described. The coatings are derived from aqueous, curable coating compositions comprising:(a) a carbamate-functional grafted acrylic polymer that comprises the reaction product of a first acrylic polymer and a second acrylic polymer, with at least one of the first and second acrylic polymers having groups that impart water dispersibility to the grafted acrylic polymer, and at least one of the first and second acrylic polymers having carbamate functionality; and(b) a second component comprising a compound having a plurality of functional groups that are reactive with the carbamate functionality.

Abstract: A compound comprising a blend of polypropylene with the reaction product of a functionalized polypropylene and polyether amine in which the polyether amine is grafted onto the functionalized polypropylene in a customary mixing apparatus is disclosed. A process for producing the reaction product of the functionalized polypropylene and the polyether amine by melting with polypropylene in a customary mixing apparatus is also disclosed.

Abstract: ABS type thermoplastic moulding compounds obtainable byA) producing a rubber latex with an average particle diameter d.sub.50 of 30 to 160 nm and a gel content of 75 to 100 wt. %B) emulsion polymerization of an amount of butadiene and optionally up to 50 wt. % (with reference to the total amount of monomer in stage B) of a comonomer in the presence of the rubber obtained in stage A, such that a rubber latex (B) with an average particle diameter d.sub.50 =220 to 330 nm and a gel content of 25 to 70 wt. % is produced,C) emulsion polymerization of 40 to 95 parts by wt. of a mixture of styrene and acrylonitrile, which optionally contains up to 50 wt. % (with reference to the total amount of monomers used in stage C) of one or more comonomers, in the presence of 5 to 60 parts by wt. (with reference to the solids) of the rubber obtained in stage B by introducing the monomer in such a way that 55 to 90 wt.

Abstract: Thermoplastic molding materials containA) from 1 to 98.5% by weight of a partly aromatic copolyamide,B) from 1 to 98.5% by weight of a polymethacrylimide,C) from 0.5 to 30% by weight of a polymeric component having OH groups,D) from 0 to 60% by weight of fibrous or particulate fillers or mixtures thereof,E) from 0 to 40% by weight of rubber impact modifiers andF) from 0 to 40% by weight of conventional additives and processing assistants.

Abstract: A graft-modified ethylene/.alpha.-olefin copolymer composition is prepared by graft copolymerizing an ethylene/.alpha.-olefin copolymer. The ethylene/.alpha.-olefin copolymer composition includes first and second ethylene/.alpha.-olefin copolymers. The copolymers are each prepared in the presence of a polymerization catalyst containing (a) an organoaluminum oxy compound and (b) for the first ethylene/.alpha.-olefin copolymer at least two kinds, and for the second ethylene/.alpha.-olefin copolymer one kind, of compounds of Group IV transition metals of the periodic table containing a ligand having a cyclopentadienyl skeleton. The ethylene/.alpha.-olefin copolymer composition may be blended with a polyolefin by mechanical or solution blending. The copolymer compositions have excellent moldability and heat stability properties and forms films having high transparency and mechanical strength.

Abstract: Substantially linear ethylene polymers, e.g., polyethylenes prepared by constrained geometry catalysis (substantially linear ethylene), which are grafted with one or more unsaturated organic compounds containing both ethylenic unsaturation and a carbonyl group, e.g., maleic anhydride, exhibit desirable adhesive properties. These graft-modified substantially linear ethylene polymers also impart desirable compatibility and impact properties to various thermoplastic polymer blends.

Abstract: A compatibilized polymer blend composition is provided which comprises a mixture of an elastomeric polymer and an acid-grafted polymer of an isomonoolefin and an alkylstyrene such as a blend of EPDM and a maleic anhydride-grafted copolymer of isobutylene and para-methylstyrene.

Abstract: Thermoplastic olefin compositions having improved fluid resistance when painted with flexible coatings such as polyurethanes paints and the like are disclosed. These compositions include a thermoplastic olefin such as crystalline polypropylene, crystalline polyethylene, or mixtures thereof with a first rubber component of an ethylene-propylene or ethylene-propylene-diene rubber having a Mooney Viscosity of 10-120 and a second rubber component of an ethylene-propylene or ethylene-propylene-diene rubber having a number average molecular weight of between about 1,000 and 10,000.

Abstract: The present invention provides hydrophilic crosslinked polymer fine particles made of a copolymer composed of:2-50% by weight of (a) a monoethylenic monomer having a polyoxyalkylene or polyvinylpyrrolidone chain,20-97% by weight of (b) a (meth)acrylamide type monoethylenic monomer,1-30% by weight of (c) a crosslinkable unsaturated monomer selected from the group consisting of compounds having, in the molecule, at least two polymerizable double bonds, and compounds having, in the molecule, at least one functional group selected from hydrolyzable silyl groups and 1,2-epoxy groups and one polymerizable double bond, and0-50% by weight of (d) other monoethylenic monomer. Said polymer fine particles are superior in polymerization stability as well as in dispersion stability during storage, undergoes no adverse effect by dispersion stabilizer owing to no use of said stabilizer, and are suitably used for formation of a hydrophilic film.

Abstract: The invention relates to sealable and peelable polymer composition which comprises 5-35 weight-% styrene modified ethylene copolymer and 95-65 weight-% ethylene butyl acrylate copolymer. Ethylene copolymer is preferably ethylene butylacrylate copolymer (E/BA) or ethylene vinyl acetate copolymer (E/VA).

Abstract: A polymer blend that comprising:(a) a modified block copolymer comprising(i) a polystyrene block and(ii) a polydiene block or a hydrogenated polydiene block, said polydiene block or hydrogenated polydiene block being modified with an average of one or more carboxyl groups; and(b) a polymer comprising a polymerization reaction product of two or more mono-ethylenically unsaturated monomers in which:(i) at least one of the monomers is an acrylic or methacrylic acid ester of a non-tertiary alcohol having 1 to 14 carbon atoms, inclusive, and(ii) at least one of the monomers is a nitrogen-containing monomer; and a method of making and using the polymer blend.

Abstract: A thermoplastic resin composition having excellent characteristics such as impact resistance and coatability is described. The thermoplastic resin composition contains a propylene based polymer and a graft copolymer having an olefin homo/co-polymer portion forming its main chain and a vinyl copolymer portion forming its branched portion. In the graft copolymer, the proportion of the olefin homo/co-polymer portion is 5 to 95% by weight, and the vinyl copolymer portion occupies the remaining weight. The vinyl copolymer portion of the graft copolymer has a hydroxyl group as a functional group. One of the olefin homo/co-polymer portion and the vinyl copolymer portion forms a dispersed phase in the other with a particle size of 0.001 to 10 .mu.m. Consequently, the graft copolymer assumes a multi-phase structure. The thermoplastic resin composition optionally further contains a thermoplastic elastomer.

Abstract: Thermoplastic molding compounds of the ABS type ofA) at least one graft polymer obtainable by emulsion polymerization of styrene and acrylonitrile in a ratio by weight of 90:10 to 50:50, the styrene and/or acrylonitrile being completely or partly replaceable by .alpha.-methyl styrene, methyl methacrylate or N-phenyl maleic imide, in the presence of at least two butadiene polymer latices of type (A) and (B), of which each contains 0 to 50% by weight of another vinyl monomer in copolymerized form, the ratio by weight of the monomers used to the butadiene polymers used being 25:75 to 70:30, andB) at least one copolymer of styrene and acrylonitrile in a ratio by weight of 90:10 to 50:50, the styrene and/or acrylonitrile being completely or partly replaceable by .alpha.-methyl styrene, methyl methacrylate or N-phenyl maleic imide,characterized in that the butadiene polymer latex (A) has a particle diameter d.sub.50 of .ltoreq.250 nm, a width of the particle size distribution (measured as d.sub.90 -d.sub.

Abstract: Thermoplastic molding composition, containing: A) 5-95 weight percent of a thermoplastic homo-, co-, or terpolymer of styrene, alpha-methylstyrene, ring-substituted styrene, methyl methacrylate, acrylonitrile, methacrylonitrile, maleic anhydride, N-substituted maleimide, vinyl acetate or mixtures thereof; B) 5-95 weight % of a graft polymer of B.1) 5-90 parts by weight of styrene, alpha-methylstyrene, ring-substituted styrene, methyl methacrylate, acrylonitrile, methacrylonitrile, maleic anhydride, N-substituted maleimide, vinyl acetate or mixtures thereof on B.2) 95-10 parts by weight of a rubber with a glass transition temperature .ltoreq. 10.degree. C; and C) 0.1-10 parts bye weight per 100 parts by weight of A+B of one or more EPM and/or EPDM rubbers.

Abstract: A composition that includes an olefinic-terminated polyalkadiene that includes carboxy ester linking groups and at least one nascent secondary hydroxyl group that is capped with a monoisocyanate. The composition also includes a free radical-polymerizable monomer such as an olefinic monomer and, optionally, a second polymeric material. In a preferred embodiment the composition is an adhesive that also includes a phosphorus-containing compound and an ambient temperature-active redox catalyst system.

Abstract: A resin composition containing graft copolymer having at least one isocyanate group and 10,000 to 20,000 number-average molecular weight or high-molecular-weight polymer having at least one isocyanate group and 10,000 to 200,000 number-average molecular weight, and low-molecular-weight polymer having or not having an isocyanate group and 500 to 8,000 number-average molecular weight. This resin composition has tackiness at ordinary temperature, and long pot life. It can be used for reactive hot melt type adhesives (which can omit hot press process), reactive hot melt type pressure-sensitive adhesives, or coating material.

Abstract: Thermoplastic molding materials preparedA) from 35 to 99.5% by weight of a matrix copolymer (A) ofa.sub.1) from 50 to 95% by weight of styrene and/or .alpha.-methylstyrene,a.sub.2) from 5 to 50% by weight of acrylonitrile anda.sub.3) from 0 to 20% by weight of further comonomersB) from 0 to 50% by weight of a particulate graft copolymer (B) which is insoluble in (A), has a median particle diameter of from 0.03 to 1 .mu.m and preparedb.sub.1) from 30 to 80% by weight of a core comprising an elastomeric polymer having a glass transition temperature of less than -10.degree. C. andb.sub.2) from 20 to 70% by weight of a graft shell comprising a polymer which is compatible or partly compatible with (A)andC) from 0.5 to 30% by weight of a particulate crosslinked copolymer (C) which is insoluble in (A), has a median particle diameter of from 0.5 to 50 .mu.m and comprisesc.sub.1) from 50 to 89.95% by weight of styrene and/or .alpha.-methylstyrene,c.sub.2) from 10 to 50% by weight of acrylonitrile,c.sub.3) from 0.

Abstract: Transparent methacrylate-acrylonitrile-butadiene-styrene (MABS) thermoplastic copolymers may be provided with electrostatic dissipative (ESD) properties, while maintaining or enhancing physical properties of the MABS, such as impact strength, by blending the MABS with an inherently antistatic thermoplastic urethane copolymer which is the reaction product of a hydroxy-terminated polyalkylene ether oligimer, a C.sub.2 -C.sub.6 alkanediol and an aromatic diisocyanate, and compatibilizing the blend of MABS and urethane with an acrylonitrile-butadiene-styrene rubbery copolymer produced by emulsion polymerization containing at least 40 weight percent butadiene monomer and a ratio of styrene to acrylonitrile which will produce a rubbery copolymer having a refractive index in the range of about 1.53 to 1.55. All three copolymer components of the transparent blend have refractive indices in the range of about 1.53 to 1.55.

Abstract: Poly(vinyl chloride), when impact modified with a core/shell impact modifier whose shell is predominantly formed from a C.sub.1 to C.sub.4 alkyl methacrylate and whose core is a copolymer of butyl acrylate and a specific compositional range of certain higher alkyl acrylate monomers, exhibits improved toughness, especially at lower use levels of the modifier or lower test temperatures for the blend, than when the core of the impact modifier is either substantially formed from butyl acrylate alone or substantially formed from the higher alkyl acrylate alone.

Abstract: A polymer blend comprising (a) a block copolymer comprising (i) a polystyrene block and (ii) a polydiene block or a hydrogenated polydiene block, said block copolymer (a) being non-maleated; and (b) a polymer comprising a polymerization reaction product of two or more monoethylenically unsaturated monomers in which (i) at least one of the monomers is an acrylic or methacrylic acid ester of a non-tertiary alcohol having 1 to 14 carbon atoms, inclusive, and (ii) at least one of the monomers is a nitrogen-containing monomer and, optionally, (iii) from 1-10 parts, based upon 100 parts of polymer, of a monomer having at least one of carboxylic acid functionality, hydroxy functionality, and epoxy functionality as well as a method of priming a substrate comprising applying the blend to the substrate.

Abstract: Polymers containing a high percentage of vinyl alcohol units are difficult to process into sheet, film, injection-molded objects, or fibers. Such melt-processing is greatly enhanced by admixing certain core/shell copolymers having either a rubbery, crosslinked core mainly formed from polymerization of butadiene and/or of an alkyl acrylate, or a non-cross-linked core derived mainly of units derived from an alkyl acrylate, and an outer shell mainly formed from polymerization of methyl methacrylate. Such copolymers do not require the presence of functional groups capable of reaction with the hydroxyl groups of the poly(vinyl alcohol) to impart the improved processing.

Abstract: A flame retarding resin composition comprising 100 parts by weight of a specific rubber-reinforced resin, 1-200 parts by weight of a phenol resin, 1-200 parts by weight of an organic phosphorus compound, 1-50 parts by weight of a nitrogen-containing compound, 0-40 parts by weight of an oligomer-type polymer containing a functional group, 0-30 parts by weight of a metal compound, a silicon compound, and/or polytetrafluoroethylene, and 0-300 parts by weight of a styrene-type resin. The composition has high impact resistance, excellent heat resistance, and a superior self-fire-extinguishing characteristic.

Abstract: A method of priming a substrate comprising applying to the substrate a blend comprising (a) a modified block copolymer comprising (i) a polystyrene block and (ii) a polydiene block or a hydrogenated polydiene block, the polydiene block or hydrogenated polydiene block being modified to contain an average of one or more carboxyl groups; and (b) a polymer comprising a polymerization reaction product of two or more mono-ethylenically unsaturated monomers in which (i) at least one of the monomers is an acrylic or methacrylic acid ester of a non-tertiary alcohol having 1 to 14 carbon atoms, inclusive, and (ii) at least one of the monomers is a nitrogen-containing monomer; in particular, a method of enhancing adhesion between a substrate and an adhesive comprising the steps of priming the substrate by applying to the substrate the blend and applying the adhesive to the primed substrate.

Abstract: Adhesive blends having special utility in the formation of composite structures with LDPE, EVOH, and impact-modified polystyrene comprise a mixture of an ethylene/ester copolymer such as EVA, polystyrene, such as impact-modified polystyrene, and a functionalized SEBS block copolymer.

Abstract: Process for the preparation of grafted polyolefins in a fluidized bed fluidized by means of steam and, if appropriate, alcohols.

Abstract: Compositions of stabilized stereoregular polymers of branched higher alpha-olefins, grafting compounds, free radical generators, glass and epoxy resins and/or epoxy-functional silanes and/or hydroxy functional compounds are provided as well as methods for making these compounds and articles thereof.

Abstract: Thermoplastic molding materials containing a mixture of(A) from 15 to 70% by weight of a methacrylate polymer,(B) from 10 to 50% by weight of a copolymer obtained by polymerization of a mixture of(B1) a vinylaromatic monomer and(B2) a vinyl cyanide,(C) from 20 to 50% by weight of a graft copolymer of(C1) 50-80% by weight of a core of(C11) from 50 to 100% by weight of a 1,3-diene and(C12) from 0 to 50% by weight of a vinylaromatic monomer and(C2) 20-50% by weight of a graft shell of(C21) a C.sub.1 -C.sub.8 -alkyl ester of methacrylic or acrylic acid and(C22) a vinylaromatic monomer,with the proviso that the medium particle size (d.sub.50) of the graft copolymer is chosen in the range from 40 to 500 nm, and(D) from 0.5 to 15% by weight of a crosslinked methacrylate polymer.

Abstract: A rubber-reinforced styrene resin composition consisting essentially of:(1) 2-30% by weight of a grafted rubbery polymer wherein less than 30 parts by weight of a polymer of at least an aromatic alkenyl compound and an alkenyl cyanide compound are grafted onto 100 parts by weight of a conjugated diene rubber (I) having a weight average particle size of 0.26-0.6 .mu.m and a gel content of 30-80% by weight;(2) 5-40% by weight of a grafted rubbery polymer wherein 30 parts by weight or more of a polymer of at least an aromatic alkenyl compound and an alkenyl cyanide are grafted onto 100 parts by weight of a conjugated diene rubber (II) having a weight average particle size of 0.26-0.6 .mu.m and a gel content of 30-80% by weight; and(3) 40-93% by weight of a styrene copolymer of a monomer component consisting of at least one aromatic alkenyl compound and an alkenyl cyanide compound, and the difference between grafting degree of the component (1) and the grafting degree of component (2) being 15% by weight or more.

Abstract: An aqueous composition comprises a natural rubber modified with a graft-polymerised methylmethacrylate polymer such as a graft-polymerised methlmethacrylate, an acrylic polymer, an acrylonitrile synthetic rubber and optionally, minor ingredients. The minor ingredients may be a quaternary ammonium surfactant and a polysiloxane. The composition is applied to an article such as of natural and/or synthetic rubber to effect coating. The process is especially suited to coating of medical gloves.

Abstract: Homogeneous polymer blends are prepared from otherwise thermodynamically immiscible polymers, especially including block copolymers. Thus, polymers such as polystyrene/poly(methyl methacrylate) block copolymer or polystyrene/poly(1,2-butadiene) block copolymer are dissolved under pressure in supercritical fluid solvents such as chlorodifluoromethane and n-butane, respectively, and expanded through a fine nozzle. As the SCF solvent evaporates, the polymer deposits as a substantially homogeneous material.