Abstract: Dispersion-process-produced, non-melt-processible, particulate, core-shell, tetrafluoroethylene copolymer comprising recurring units of tetrafluoroethylene and modifying recurring units of at least one ethylenically unsaturated comonomer that is copolymerizable with the tetrafluoroethylene, the number of recurring units of comonomer in the shell being sufficient to enable the copolymer to compound uniformly with an elastomer or plastic without forming visible agglomerates, and blends thereof with elastomeric and plastic resins.

Abstract: A film prepared from a compatibilized resin blend comprising an olefin polymer, a polymer of a vinyl aromatic monomer and a compatibilizing amount of a graft copolymer of a vinyl aromatic monomer and an EPDM rubber exhibits improved properties making it highly desirable in such end uses as grocery and trash bags.

Abstract: Dispersion-process-produced, non-melt-processible, particulate, core-shell, tetrafluoroethylene copolymer comprising recurring units of tetrafluoroethylene and modifying recurring units of at least one ethylenically unsaturated comonomer that is copolymerizable with the tetrafluoroethylene, the number of recurring units of comonomer in the shell being sufficient to enable the copolymer to compound uniformly with an elastomer or plastic without forming visible agglomerates, and blends thereof with elastomeric and plastic resins.

Abstract: A melt-blended resin composition useful as a modifier for improving the impact resistance of thermoplastic resins which comprises (a) a polymer containing at least one epoxy group per molecule and having a modulus of elasticity in bending of at most 10.sup.4 kg/cm.sup.2, e.g. an .alpha.-olefin/glycidyl ester or ether copolymer, and (b) a copolymer of an .alpha.-olefin and an .alpha.,.beta.-unsaturated carboxylic acid wherein at least 5% by mole of the carboxyl groups are neutralized with an alkali metal.

Abstract: A multilayer interpolymer material of an elastomeric inner phase polymerized from (a) 50-99.9 parts of at least one among: conjugated dienes and alkyl and aralkyl acrylates, (b) 0-49.9 parts of at least one copolymerizable monomer, (c) 0.05-8 parts of at least one crosslinking monomer, and (d) 0.05-6 parts of at least one grafting monomer, and a nonelastomeric outer phase, polymerized from (a) 50-99.9 parts by weight of at least one among: alkyl methacrylates, vinyl aromatic hydrocarbons and unsaturated nitriles, (b) 0.1-50 parts of at least one copolymerizable monomer, and (c) 0-5 parts of at least one chain-limiting agent, the parts being given by weight, it being possible for the said polymer to comprise a nonelastomeric or else elastomeric core phase without grafting and crosslinking monomers. Two populations of particles of mean diameter of approximately 40-150 nm and approximately 160-500 nm respectively are mixed in given ratios. This improves the impact strength of the resultant matrices.

Abstract: A polymeric composition of at least one matrix polymer based on methyl methacrylate, at least one elastomeric latex, and at least one polymer based on fluorovinyledene, the amounts of each component specified relative to one another.

Abstract: Thermoplastic particulate graft polymers comprising particles of a core (A) of an organic resin-like polymer of olefinically unsaturated monomers having softening temperatures (glass temperatures) above 30.degree. C., a shell polymer (B) or ogranopolysiloxane and a polymer (C) of at least one .alpha.,.beta.-unsaturated olefinic monomer grafted onto the particles consisting of A and B and their use as thermoplastic molding compositions.

Abstract: A blend of ethylene copolymer, ethylene copolymer modified by grafting with a comonomer containing pendant acid or acid derivative functionality, styrene polymer, and alicyclic resin modifier or stabilized rosin ester provides a useful adhesive, particularly for bonding polystyrene to barrier polymers.

Abstract: Fluoroelastomer compositions vulcanizable with peroxides having improved processability and compatibility properties and comprising, as additives, ethylene polymers and ethylene-propylene or ethylene-butene copolymers having, along the polymer chain, ester groups of the type--COOR where R is a C.sub.1 -C.sub.8 alkyl, wherein the ester groups amount to 0.5-10% by weight as referred to the total polymer. Such polymer additives contain the ester group bound to a carbon atom of the chain either directly or through a --CH.sub.2 -- or in the form ##STR1## where R is a C.sub.1 -C.sub.8 alkyl group.

Abstract: An elastomer blend comprising:(a) a polyolefin selected from the group consisting of (i) polyethylene; (ii) a hydrolyzable copolymer of ethylene and silane; and (iii) a hydrolyzable silane modified polyethylene; and(b) an ethylene-propylene-diene terpolymer rubber, with or without silane modification, said terpolymer when silane modified being hydrolyzable, provided that, when component (a) is polyethylene, the terpolymer is silane modified,the blend of components (a) and (b) having the following physical properties:(i) Secant Modulus in the range of about 100 psi to about 10,000 psi;(ii) 100% Modulus in the range of about 100 psi to about 1500 psi; and(iii) Shore A hardness in the range of about 10 to about 100.

Abstract: A sealant composition comprising:(a) 100 parts by weight of a silane functionalized polymer component which is prepared by reacting enough silane of the general formula R R'.sub.n SiY.sub.

Abstract: The invention relates to a process for the preparation of powder form polymer mixtures consisting of a tetrafluoroethylene polymer and an organic thermoplastic polymer, the tetrafluoroethylene polymer being present in the compositions in a particulate, highly disperse form; the powder form polymer mixtures thereby obtained have special and surprising properties when they are processed in a thermoplastic manner to give plastics articles and when they are added to conventional thermoplastics.

Abstract: Compositions of relatively water-stable thermoplastic polymers having hydrolyzable, pendant silane moieties and tetramethyl titanate dispersed in a normally solid alkylene-alkyl acrylate copolymer matrix. These compositions are useful as extrudates about wires and cables, water-curing in a relatively short period of time to crosslinked products.

Abstract: Elastic-thermoplastic and thermoplastic powder-form moulding compositions of uniform particle size and improved thermal stability at made by incorporating a sulphur containing polymer.

Abstract: A modified polyolefin resin and a composition containing therein such modified polyolefin, having excellent adhesive property and heat-sealing property at the time of high speed forming operations, the modified polyolefin resin consisting essentially of: a copolymer of ethylene and .alpha.-olefin having 4 or more carbon atoms, the copolymer having a density in a range of from 0.890 to 0.910 g/cm.sup.3, a ratio of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn) of Mw/Mn=2 to 15, and a product of a melt tension (g) and a melt-index (g/10 min.) of a molten resin measured at 160.degree. C. of 4 or below; and unsaturated carboxylic acid or derivatives thereof grafted on the ethylene type copolymer at a ratio of from 0.01 to 3% by weight.

Abstract: A rubber composition capable of giving a highly oil-resistant vulcanizate with an organic peroxide as the vulcanizing agent is proposed. The composition is a blend of an EPM or EPDM rubber and an acrylic rubber loaded with a reinforcing filler, of which the latter rubber is a copolymer having at least two vinylsilyl groups in a molecule as the pendant groups introduced by the copolymerization of one or more acrylic monomers with a vinylsilyl-containing organosilicon compound having an aliphatically unsaturated group copolymerizable with the acrylic monomers in a molecule, such as CH.sub.2 .dbd.CH--CO--O--CH.sub.2 CH.sub.2 CH.sub.2 --Si-- and CH.sub.2 .dbd.CH--C.sub.6 H.sub.4 --Si--. The covulcanizate has the high mechanical strengths of the EPM or EPDM rubber and the high oil resistance of the acrylic rubber in combination.

Abstract: A melt-processable fluororesin of wide use is obtained by blending 100 parts by weight of a soft and melt-processable fluorine-containing graft copolymer in which crystalline fluoro-polymer segments are grafted to an elastomeric fluoro-polymer segment and 1-90 parts by weight of a crystalline fluoro-polymer which comprises the structural units of the crystalline fluoro-polymer segments of the graft copolymer. For example, a graft copolymer obtained by graft copolymerization of vinylidene fluoride (VDF) with an elastomeric copolymer of VDF, chlorotrifluoroethylene and an unsaturated peroxy compound is blended with either homopolymer of VDF or a copolymer of VDF and another monomer. By the blending some important characteristics of the graft copolymer such as elastic modulus, hardness and melt flow rate are desirably modified without serious lowering of tensile strength and elongation.

Abstract: A roofing membrane composition comprising:(a) a first hydrolyzable polyolefin having a density less than or equal to 0.92 selected from the group consisting of (i) a copolymer of ethylene or propylene and silane and (ii) a silane modified polyethylene, polypropylene, or ethylene/propylene copolymer wherein, in (i) or (ii), the silane is present in an amount of about 0.

Abstract: Polytetrafluoroethylene resin within a specific particle size range, preferably about 70 to about 700 microns, in polymeric thermoplastic styrenic compositions containing conventional flame retardant additives permits reducing the amount of such additives in the composition to levels low enough to avoid adverse effect on performance properties of such compositions which would otherwise occur at higher levels of such additives necessary to achieve UL-94 flame retardant performance.

Abstract: Rubber modified styrene-acrylonitrile polymers (ABS) having three different types of rubber particles. One type is small, usually emulsion-produced particle. The second is a large emulsion-produced particle. The third is a large, mass-produced particle. Such compositions exhibit good combinations of toughness and gloss.

Abstract: A crosslinkable thermoplastic polymeric composition comprising a component inherently adapted for crosslinking by thermal or chemical treatment e.g. a peroxide-containing polyolefin component or a silane-modified polyolefin and a fluorocarbon polymer. The composition can be thermoformed to produce useful articles e.g. cable insulation and the presence of the fluorocarbon polymer (e.g. a copolymer of vinylidene fluoride and hexafluoropropylene) results in the articles having improved surface finish.

Abstract: A rubber blend is produced by masticating a mixture of monoolefin copolymer rubber and high-diene hydrocarbon rubber while dynamically vulcanizing the monoolefin copolymer rubber. The blend is then further treated to vulcanize the high-diene hydrocarbon rubber portion. The resulting vulcanized blend has improved properties.

Abstract: A seal layer for an easy open package consisting essentially of 40% or less, by weight, of a first polymer having a melt flow index of less than 5 selected from the group consisting of ionomers and ethylene-vinyl acetate copolymers, and 60% or more by weight of a second polymer having a melt flow index greater than 20 being selected from the group consisting of low density polyethylene, ethylene-vinyl acetate copolymers, and modified ethylene-vinyl acetate copolymers, whereby the second polymer is a low density polyethylene if the first polymer is an ethylene-vinyl acetate copolymer.

Abstract: Several important features and characteristics, particularly and pronouncedly environmental stress crack resistance (i.e., "ESCR") as well as other desirable physical properties of blends or intimate admixtures, known as "polyblends" and usually made by melt-blending, of various styrene polymers (i.e., "SP's"), notably homopolystyrene (i.e., "PS"), and thermoplastic elastomers (i.e., "TE's") are significantly and in emphasized measure enhanced by thorough incorporation in (and simultaneous or subsequent heat action-initiating and cross-link-effecting of) the styrene polymer-thermoplastic elastomer polyblend in low level concentration(s) of a thermally-activatable, organic peroxide in combination with any one (or even a mixture) of an optimizing cross-linking supplement provided in effectively reactive amounts of, for illustration, either a styrene (or the like alkenyl aromatic) monomer or a reagent that is reactive towards alkenes (such as certain dithiols, amino-derivatives, etc.

Abstract: Disclosed is an electroconductive and thermoplastic resin composition which is comprised of 99-80 parts by weight of a fluorine-containing graft copolymer and 1-20 parts by weight of carbon black. The graft copolymer is one obtained by graft copolymerization of a fluorine-containing monomer that gives a crystalline polymer, such as vinylidene fluoride, with a fluorine-containing elastomeric copolymer having peroxy bond, such as a ternary copolymer of vinylidene fluoride, chlorotrifluoroethylene and an unsaturated peroxy compound. To attain good conductivity while maintaining favorable mechanical properties of the fluorine-containing graft copolymer, it is essential to use a carbon black which is not smaller than 500 m.sup.2 /g in specific surface area and not smaller than 250 ml/100 g in oil absorption.

Abstract: A modified polyolefin composition comprising(A) 50 to 99 parts by weight of a modified polyolefin having an intrinsic viscosity [.eta.] of 0.5 to 10 dl/g and a degree of crystallization of at least 20% selected from the group consisting of polyolefins modified with styrene-type hydrocarbons, polyolefins modified with unsaturated epoxy compounds, polyolefins modified with unsaturated silane compounds, halogenated polyolefins and hydroxyl group-containing polyolefins, and(B) 1 to 50 parts by weight of a thermoplastic polymer selected from the group consisting of(B-1) thermoplastic polymers having a flexural modulus of less than 1000 kg/cm.sup.2, a glass transition temperature (Tg) of not higher than 0.degree. C. and a weight average molecular weight (Mw) of at least 400,000, and(B-2) polar non-olefinic thermoplastic polymers or ethylenic polymers having a flexural modulus of at least 1000 kg/cm.sup.2 and an adhesion strength, with respect to the modified polyolefin (A), of not more than 200 g/cm.

Abstract: The properties of linear ethylene polymers, especially linear, low density polyethylene (LLDPE), are improved by adding a chemically modified ethylene polymer to the base resin. The modification is brought about by the use of a free radical generator, preferably an organic peroxy compound such as benzoyl peroxide, optionally with an unsaturated silane such as vinyl trimethoxy silane. The use of the modified resin masterbatch enhances the crystallization of the polymer and improves the melt strength of the polymer, providing greater bubble stability in the blown tubular film extrusion process so that higher operating speeds may be employed. In addition, the films produced from the blends have improved antiblocking properties without significant deterioration of mechanical properties.

Abstract: The invention relates to polymer mixtures with a mat surface, based on graft polymers with acid functions and thermoplastic resins with basic functions.

Abstract: A thermoplastic resin composition comprising:(A) from 10 to 90 parts by weight of an imide-modified polymer having an imido group and obtained by reacting ammonia and/or a primary amine to a copolymer prepared by the polymerization of a monomer mixture comprising from 50 to 70% by weight of an aromatic vinyl monomer and from 30 to 50% by weight of an unsaturated dicarboxylic acid anhydride;(B) from 10 to 90 parts by weight of a graft copolymer prepared by copolymerizing from 30 to 75% by weight of a mixture comprising from 40 to 80% by weight of a rubber-like polymer having a weight average particle size of from 0.3 to 0.6 .mu.m and from 20 to 60% by weight of a rubber-like polymer having a weight average particle size of from 0.1 to 0.2 .mu.

Abstract: The invention relates to ABS moulding compositions based on selected copolymers and, optionally graft polymers of olefinically unsaturated monomers which are suitable for the preparation of ABS and silicon derivatives which are capable of copolymerization, the flame resistant properties of these moulding compositions being improved in comparison with conventional ABS material.

Abstract: The invention relates to flame-resistant ABS moulding materials containing a fluoro-organic polymer besides customary flameproofing additives and to a process for their manufactures.

Abstract: 1. A thermoplastic fluorine-containing resin blend composition comprising(a) from 5 to 95% by weight of a thermoplastic fluorine-containing resin, and(b) from 95 to 5% by weight of at least one modified ethylene polymer selected from the group consisting of the following components (i) and (ii).

Abstract: A novel thermoplastic polymer composition comprises a blend of a polyolefin graft copolymer, and a copolymer of styrene and maleic anhydride and modifications thereof.

Abstract: Crosslinked product of a propylene resin having practically sufficient performances such as heat resistance, impact strength, rigidity, etc. is produced by exposing a composition to water or steam in the presence of a silanol condensation catalyst to effect crosslinking, the composition being comprised of (A) 60 to 90 wt % of a modified propylene resins with an ethylenically unsaturated silane compound grafted thereon, (B) 20 to 5 wt % of an ethylene resin and (C) 20 to 5 wt % of an ethylene-.alpha.-olefin copolymer rubber.

Abstract: An undercoating composition for a fluorocarbon polymer coating comprising:(a) a modified tetrafluoroethylene polymer in the form of particles of double-layer structure having a core and a shell, the core comprising a tetrafluoroethylene homopolymer or a copolymer of tetrafluoroethylene with a fluorine-containing .alpha.-olefin, the shell comprising a copolymer of tetrafluoroethylene and said fluorine-containing .alpha.-olefin copolymerized therewith in a larger amount than in the core,(b) a copolymer of tetrafluoroethylene and said fluorine-containing .alpha.-olefin, and(c) an auxiliary adhesive agent selected from the group consisting of polyimide, polybismaleimide, polyamideimide and aromatic polyamide.

Abstract: The addition of styrene-acrylonitrile copolymer to acrylic core-shell thermoplastic elastomers reduces mold shrinkage and improves surface hardness. The compositions are useful as moldable and extrudable rubber goods.

Abstract: A novel thermoplastic polymer composition comprises a blend of a polyolefin graft polymer and a copolymer of acrylonitrile and styrene modified with a base polymer such as an acrylic polymer, a chlorinated polyethylene, or a terpolymer of styrene, acrylonitrile and a polyene modifier.

Abstract: A multi-layer structure polymer composition having a gel content of at least 50% which is constituted of an innermost layer polymer (A) consisting mainly of alkyl acrylate and having a degree of swelling of 10 or lower, and having a glass transition temperature lower than 10.degree. C., a crosslinked elastomer polymer (B) consisting mainly of alkyl acrylate and having a degree of swelling slightly higher than that of said polymer (A) and having a glass transition temperature not higher than 0.degree. C., said innermost layer polymer (A) and said crosslinked elastomer polymer (B) constituting a double layer elastomer structure polymer, as well as an outermost layer polymer (C) consisting mainly of alkyl methacrylate and having a glass transition temperature not lower than 60.degree. C.

Abstract: Disclosed is a liquid composition comprising a homogeneous reaction product of a hydrophobic polyol and an organosilicon-containing material. The organosilicon-containing material comprises an organosilicon-containing substance free of functional groups attached to carbon and essentially free of alkali metal ions, having atoms bonded directly to silicon, all of which atoms are selected from O, N, and/or Cl. The organosilicon-containing substance additionally has moieties directly bonded to silicon which are displaceable by reaction with water and/or alcohol. At least a part of the organosilicon-containing substance is hydrolyzed to a compound or a mixture of compounds containing a residual amount of the moieties directly bonded to silicon which are displaceable.

Abstract: A fluorohydrocarbon resin that has elasticity and retains favorable properties of known fluorohydrocarbon polymers is obtained by graft copolymerization of a fluorine-containing elastomeric polymer with a fluorine-containing crystalline polymer. One of the elastomeric and crystalline polymers is prepared by copolymerizing at least one fluorine-containing monomer with at least one unsaturated monomer that has peroxy bond. When the elastomeric polymer is employed as the basic polymer and the crystalline polymer is polyvinylidene fluoride, the graft copolymerized fluorohydrocarbon resin is high in mutual solubility with polyvinylidene fluoride, so that the addition of this resin to polyvinylidene fluoride gives a resin composition which has elasticity and good low temperature characteristics.

Abstract: Core/shell fluoropolymer compositions in particulate form, wherein the core is a highly crystalline polymer such as, for example, tetrafluoroethylene, and the shell is an elastomeric fluoropolymer such as, for example, a vinylidene fluoride/hexafluoropropene copolymer, optionally also containing a cure site monomer are outstanding additives for uncured fluoroelastomer compositions, which after curing in the presence of dispersed core/shell fluoropolymers have improved tear strength, tear strength to modulus ratio, and certain other physical properties.

Abstract: A miscible polyblend comprising an .alpha., .beta.-ethylencially unsaturated dicarboxylic acid or its anhydride copolymerized with at least one monovinyl-substituted aryl hydrocarbon monomer and an imide derivative of maleic anhydride copolymerized with at least one monovinyl-substituted-aryl hydrocarbon monomer is disclosed.

Abstract: In the emulsion polymerization of a monomer mixture comprising an aromatic vinyl compound, a vinyl cyanide compound and if desired, other vinyl compounds copolymerizable therewith in an aqueous medium, the vinyl cyanide compound is further added to the polymerization system in a controlled velocity during the substantial period of polymerization from the initial stage. When the copolymer thus obtained is incorporated into, for example, an acrylonitrile-butadiene-styrene terpolymer composition, thermoplastic resin compositions not coloring upon molding are obtained with a good impact resistance and heat resistance.

Abstract: Oil resistant, ozone resistant polymer blends are prepared by blending an Acrylonitrile/Butadiene polymer with an EPDM polymer which has had grafted onto it a polymer prepared by polymerizing onto the backbone a methacrylate monomer. The preferred EPDM graft polymer is a methylmethacrylate grafted onto the EPDM backbone.

Abstract: Polypentabromostyrene with a bromine content of 76% to 80%, which is plastic at a temperature of 280.degree. C. and is thermally decomposed at a temperature of about 400.degree. C., can be produced by reacting pentabromophenylethyl bromide with an alkali metal hydroxide or carbonate in an alcoholic solvent and subsequently by catalytically initiating polymerization. The polypentabromostyrene is useful as a flame retardant for thermoplastic synthetic resins.

Abstract: Blends of linear polyolefin, reinforcing fiber, and acid copolymer of .alpha.-olefin and .alpha.,.beta.-ethylenically unsaturated carboxylic acid are provided wherein the acid copolymer has from 0 to about 90 percent of the acid groups ionized by neutralization with metal ions. Such blends having high heat distortion temperature, excellent Izod impact values and fast molding cycles are particularly suitable as molding resins.

Abstract: A string for the stringing of rackets, bows, musical instruments and the like has a thread-like structure comprising at least one monofil of a synthetic resin mixture containing 99-86% by weight of polyvinylidene fluoride and 1-14% by weight of at least one polyacrylate. The monofil is melt-extruded and is stretch-oriented to impart improved elasticity thereto.

Abstract: Several important features and characteristics, particularly and pronouncedly environmental stress crack resistance (i.e., "ESCR") as well as other desirable physical properties of blends or intimate admixtures, known as "polyblends" and usually made by melt-blending, of various styrene polymers (i.e., "SP's"), notably homopolystyrene (i.e., "PS"), and thermoplastic elastomers (i.e., "TE's") are significantly and in emphasized measure enhanced by thorough incorporation in (and simultaneous or subsequent heat action-initiating and crosslink-effecting of) the SP/TE polyblend in low level concentration(s) of a thermally-activatable, organic peroxide in combination with any one (or even a mixture) of an optimizing cross-linking supplement provided in effectively reactive amounts of, for illustration, either a styrene (or the like alkenyl aromatic) monomer or a reagent that is reactive towards alkenes (such as certain dithiols, amino-derivatives, etc.

Abstract: A monomer mixture comprising .alpha.-methylstyrene or 2-isopropenylnaphthalene, methyl methacrylate, and acrylonitrile is polymerized in the presence of a crosslinked polymer obtained by copolymerizing a monofunctional monomer such as .alpha.-methylstyrene with a small quantity of a polyfunctional monomer such as divinylbenzene to obtain a copolymer (C). A vinyl chloride resin composition formulated by blending the copolymer (C) thus obtained with a vinyl chloride resin and an impact strength modifier resin in a specific proportion possesses improved thermal deformation resistance and impact strength while retaining processability comparable to that of the vinyl chloride resin mixed with the impact strength modifier resin.

Abstract: A graft copolymer is obtained by graft-polymerizing an ethylenically unsaturated monomer onto a rubber trunk polymer which is a copolymer of a polyalkylene oxide monomer comprising 4 to 500 alkylene oxide groups together with an ethylenic unsaturation, and a conjugated diene and/or an alkyl acrylate. By adding an anionic surfactant to a base resin which comprises this graft copolymer alone or a mixture of this graft copolymer and another thermoplastic resin, an antistatic resin composition can be obtained. The resin composition thus obtained possesses excellent and permanent antistatic property that is not lowered by washing or wiping as is the case with conventional antistatic resins comprising an antistatic agent.