Abstract: A process for preparing hollow polymer particles which comprises a seed-forming step for polymerizing a monomer mixture of an acid monomer having a carboxylic acid group and a non-ionic hydrophilic monomer in the presence of a polymerization initiator; a core-forming step for preparing a core, which can be swollen with an alkali, by polymerizing the monomer mixture of an acid monomer having a carboxylic acid group, a non-ionic hydrophilic monomer and a cross-linking agent to the seed latex; a shell-forming step in which a hydrophobic shell is formed on the hydrophilic core; and an alkali-swelling step.

Abstract: Graft and core-shell copolymers are provided which are useful as binders and are prepared from a peroxy-containing copolymer phase a) wherein the copolymer phase contains 0.01 to 20% by weight of residues of an olefinically di-unsaturated peroxy compound and from 80 to 99.99% by weight of residues of at least one comonomer and a polymer phase b) grafted thereon which is obtained by grafting one or more monomers. A process for preparing the copolymers is also provided.

Abstract: This invention relates to a polymer article prepared by the process comprising the steps of: (1) blending polymer composition comprising (A) at least one ethylene vinyl acetate copolymer, (B) at least one propylene ethylene copolymer, and (C) (1) from about 0.01% to about 5% by weight of a cross-linking agent, (2) from about 0.1% to about 35% by weight of one or more polymers selected from: (i) at least one co-, or terpolymer of at least one vinyl aromatic compound; (ii) at least one co-, or terpolymer of an alpha-olefin, and at least one monomer selected from the group consisting of an acrylic acid, an acrylic ester, a vinyl silane, and a vinyl alcohol; (iii) at least one polyolefin other than a propylene homopolymer or a propylene-ethylene copolymer; (iv) at least one polyetheramide block copolymer; (v) at least one ionomer; (vi) at least one oxidized polyolefin wax, or mixtures of (1) and (2); and forming the polymer composition into the article.

Abstract: The present invention relates to comb polymers KP, produced from macromonomers of formula (I) ##STR1## where X represents a group which comes from the initiator system, preferably an alkyl group with 1-50 C atoms; R1 represents an alkyl group with 1-18 C atoms, preferably 1-10 C atoms, particularly preferably 1-4 C atoms; R2 and R3 each represent an alkyl group with 1-8 C atoms; and B represents a terminal alkene group with at least 2 and not more than 12 C atoms; wherewith the compound of formula (I) is converted, by means which are per se known, to a compound of formula (II) which contains an active hydrogen substituent in the terminal position: ##STR2## where X, R1, R2, a, b, and c are as defined above, and a represents the group B modified by introduction of the active hydrogen function; wherewith the compound of formula (II) in turn is acylated to a macromonomer of formula (IV) by a reagent MR which introduces the (meth)acryloyl group: ##STR3## where X, R1, R2, R3, A, a, b, and c are as defined above, an

Abstract: This invention relates to difunctional telechelic linear non-crosslinked polyolefins without pendant chain branched groups. The polyolefin compounds of this invention are useful for preparing high molecular weight polyesters, polyamides, polyureas and polyurethanes of high density without branching of the polymer chains, and with low permeability to gases and solvents.

Abstract: Grafted polymer particles are prepared by a free-radical addition polymerization mechanism using a flame produced by igniting a mixture of a combustible gas and an oxidant to heat at least a portion of the surface of a solid polymer particle to produce free-radicals thereon. At least one polymerizable ethylenically unsaturated monomer is contacted and reacted with the free-radicals formed on the surface of the polymer to form a graft thereon.

Abstract: Ranges of chain-transfer agents, thixotropic agents, and alumina trihydrate content are balanced to minimize migration or maldistribution of coloring matter and alumina trihydrate during curing of methyl methacrylate in a syrup including polymethylmethacrylate and also during subsequent heating and deformation in thermoforming, to achieve constancy of impact resistance and improve stability of patterns even in deformed portions of formed sheets.

Abstract: This invention provides for curable and graft-cured polymer compositions prepared from a mixture comprising:a) an elastomeric copolymer containing from about 0.01 up to about 10 mole % of Y ester groups randomly distributed along and pendant to the elastomeric polymer chain, said Y ester groups having the structure: ##STR1## wherein R.sub.2 and R.sub.3 are independently selected from the group consisting of hydrogen and an alkyl group containing 1 to about 6 carbon atoms and R.sub.4 is selected from the group consisting of hydrogen, an alkyl group containing from 1 to about 28 carbon atoms, an aryl group and an alkenyl group containing from 2 to about 28 carbon atoms; andb) at least one free radically polymerizable monomer. The invention also provides for a process for preparing graft-cured polymer compositions comprising forming the above recited mixture of (a) and (b) and subjecting said mixture to free radical polymerization conditions. The Y ester groups pendant to the elastomeric polymer chain, e.g.

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: A star-branched polymer comprising a core portion and polymeric arms. The core portion is obtained by anionic polymerization of at least one unsaturated acrylate or methacrylate ester of a polyol and the polymeric arms are obtained by anionic polymerization of at least one acrylic or methacrylic monomer.

Abstract: To provide a toner resin composition and toner which has superior anti-offset properties, low temperature fixability and anti-blocking properties, and gives sufficiently stable high-quality images even when copying is done over a long duration of time. This toner resin composition is a toner resin composition comprising a low molecular weight vinyl polymer component and a high molecular weight vinyl polymer component which comprising styrene-type monomers and (meth)acrylic esters as structural units of said polymer components and having peaks of the molecular weight distribution in the region of molecular weights from about 4.times.10.sup.3 to about 8.times.10.sup.4 and in the region of molecular weights from about 1.times.10.sup.5 to about 4.times.10.sup.

Abstract: Adhesive beads comprise a core comprising a pressure sensitive adhesive material and an essentially discontinuous organic polymer disposed about the core. The beads are free-flowing at room temperature. Upon application of heat and/or pressure the core is activated and blends with the coating to provide a pressure sensitive adhesive.

Abstract: A graft copolymer dispersant (binder) having a weight average molecular weight of about 5,000-100,000 wherein: (1) the graft copolymer has a polymeric backbone formed by polymerizing ethylenically unsaturated monomers; (2) the graft copolymer has macromonomer side chains attached to the backbone at a single terminal point that have weight average molecular weights of about 1,000-30,000 and are formed from by polymerizing ethylenically unsaturated monomers in the presence of a cobalt chain transfer agent. The graft copolymer further contains about 2 to 70% by weight, based on the weight of the graft copolymer, of polymerized constituents having a phosphate moiety or phosphoric acid moleties that are polymerized into the backbone, the side chains, or both. The graft copolymer is neutralized with an inorganic base or an amine.

Abstract: Ranges of chain-transfer agents, thixotropic agents, and alumina trihydrate content are balanced to minimize migration or maldistribution of coloring matter and alumina trihydrate during curing of methyl methacrylate in a syrup including polymethylmethacrylate and also during subsequent heating and deformation in thermoforming, to achieve constancy of impact resistance and improve stability of patterns even in deformed portions of formed sheets.

Abstract: The present invention provides a continuous process for producing an adducted derivatized EPM or EPDM oil solution in which a grafted ethylene polymer is adducted with an antioxidant diamine for formation of an adduct during holding.

Abstract: A pigment dispersion useful for forming aqueous coating compositions containing metallic flake pigment, an aqueous carrier and a graft copolymer dispersant (binder);wherein the graft copolymer has a weight average molecular weight of about 5,000-100,000 and comprises a polymeric backbone and macromonomer side chains attached to the backbone wherein(1) the polymeric backbone is formed of polymerized ethylenically unsaturated monomers and(2) the side chains are macromonomers that are attached to the backbone at a single terminal point and formed from polymerized ethylenically unsaturated monomers that are polymerized in the presence of a cobalt chain transfer agent have a weight average molecular weight of about 1,000-30,000;wherein the graft copolymer contains about 2 to 70% by weight, based on the weight of the graft copolymer, of polymerized constituents having a phosphate moiety and phosphoric acid moieties that are polymerized into the backbone, the side chains or both and the polymer is neutralized with a

Abstract: A water-absorptive contact lens obtained by saponification of a copolymer composed essentially of (A) from 1 to 30% by weight of a (meth)acrylate polymer having at least one polymerizable group per molecule on an average obtained by copolymerizing (a) an alkyl (meth)acrylate and (b) a monomer having at least two polymerizable groups per molecule, as the main components; (B) from 45 to 95% by weight of a fatty acid vinyl ester; (C) from 0.02 to 10% by weight of a crosslinking agent which is not decomposable by saponification; and (D) from 0.1 to 20% by weight of a crosslinking agent which is decomposable by saponification.

Abstract: The invention relates to a curable composition containing as component A) compounds with at least two activated double bonds (I), these being .alpha.,.beta.-unsaturated carbonyl compounds, .alpha.,.beta.-unsaturated carboxylic acid esters or .alpha.,.beta.-unsaturated nitriles, and compounds B) which contain at least two active hydrogen atoms or at least two groups with active hydrogen atoms or at least one active hydrogen atom and at least one group with an active hydrogen atom, and customary additives, catalysts, if appropriate pigments and an organic solvent. Either component A) or B) or components A) and B) are based on a branched soluble acrylate copolymer (P) which is obtainable by copolymerization ofa) 3 to 30% by weight of monomers with at least two ethylenically unsaturated polymerizable double bonds,b) 5 to 60% by weight of monomers with a functional group andc) 5 to 92% by weight of other ethylenically unsaturated monomers,the sum of a), b) and c) being 100% by weight.

Abstract: Star polymers having first polymeric arms comprising a hydrogenated conjugated diene and smaller second polymeric arms of a methacrylate resist coupling of methacrylate blocks attached to different cores and have improved performance as viscosity index improvers. The polymerized methacrylate units are converted to amide or imide groups by reaction with a primary or secondary amine to give the viscosity index improver dispersant properties.

Abstract: A multistaged polymer containing a hydrophilic core fully encapsulated with a hydrophobic shell without a tiecoat layer is disclosed. A method is also disclosed for encapsulating hydrophilic polymers including the steps of:(1) emulsion polymerizing a hydrophilic core polymer from about 5% by weight to about 100% by weight, based on the total weight of the core polymer, of a hydrophilic monoethylenically unsaturated monomer and from 0% by weight to about 95% by weight, based on the total weight of the core polymer, of at least one nonionic monoethylenically unsaturated monomer;(2) emulsion polymerizing, in the presence of the core polymer, at least one shell polymer from about 90% by weight to about 99.9% by weight, based on the total weight of shell polymer, of at least one nonionic monoethylenically unsaturated monomer and from about 0.

Abstract: The present invention provides an impact resistant Fresnel lens comprising a resin which is obtained by polymerizing a solution consisting essentially of (a) 100 parts by weight of a monomer mixture comprising an styrenic monomer in an amount of from 60 to 99 parts by weight and a (meth)acrylic monomer of from 1 to 40 parts by weight, and (b) 1 to 50 parts by weight of a styrene-dienic copolymer based on 100 parts by weight of said monomer mixture based on 100 parts by weight of said monomer mixture. The Fresnel lens has a high refractive index and excellent transparency and impact resistance.

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: Multi-stage polymer particles comprising at least one hydrophobically-modified, ionically-soluble polymer stage polymerized from a) hydrophobic monomer, b) ethylenically-unsaturated, ionizable monomer, c) non-ionic, ethylenically-unsaturated monomer and optionally d) multi-functional compound are improved thickeners.

Abstract: Graft polymers which comprise 20 to 99.9% by weight of an ethylene copolymer (base polymer) and 0.1 to 80% by weight of a graft component. The base polymer includes 30% to 95% by weight of ethylene and (1) 5% to 70% by weight of vinyl esters of saturated aliphatic C.sub.2 - to C.sub.18 -monocarboxylic acids or (2) 4% to 50% by weight of vinyl esters of saturated aliphatic C.sub.2 - to C.sub.18 -monocarboxylic acids and 1% to 20% by weight of linear or branched C.sub.3 - to C.sub.18 -monoolefins. Graft components are N-substituted alpha,beta-unsaturated dicarboxylic acid imides, dicarboxylic acid amides, dicarboxylic acid half-amides, or ammonium salts of the half-amides. The graft polymers are employed for improving the flow properties of paraffin-containing mineral oils, mineral oil distillates, and middle distillates.

Abstract: 1. A water-absorptive contact lens obtained by saponification of a copolymer composed essentially of:(A) from 1 to 30% by weight of a (meth)acrylate polymer having at least one polymerizable group per molecule on an average obtained by copolymerizing (a) an alkyl (meth)acrylate and (b) a monomer having at least two polymerizable groups per molecule, as the main components;(B) from 1 to 10% by weight of a vinyl monomer selected from the group consisting of maleic acid esters and N-vinyl lactams;(C) from 50 to 98% by weight of a fatty acid vinyl ester; and(D) from 0.02 to 10% by weight of a cross linking monomer.

Abstract: Disclosed herein is a resin composition for toner mainly composed of a graft polymer which is formed by (a) 90 to 99.9 percent by weight of a copolymer formed by copolymerizing a styrene monomer and (meth)acrylic ester to contain at least 50 percent by weight of the styrene monomer and (b) 0.1 to 10 percent by weight of an ethylene-vinyl acetate copolymer having a saponification value of 10 to 30 and a softening point of 70.degree. to 200.degree. C. This resin composition is prepared by graft-polymerizing the copolymer (a) and the ethylene-vinyl acetate copolymer (b) under presence of a peroxide polymerization initiator. When a polyvalent metal compound (c) is employed, 85 to 99.9 percent by weight of the copolymer (a) and 0.1 to 10 percent by weight of the ethylene-vinyl acetate copolymer (b) are graft-polymerized under presence of 0.01 to 5 percent by weight of the polyvalent metal compound (c) and a peroxide polymerization initiator.

Abstract: A catalyst-free single-component coating agent containing (A) one or more compounds acting as cross-linking agents and with on average at least two CH-azide hydrogen atoms, (B) one or more (meth)acrylate copolymers, polyester resins and/or polyurethane resins capable of Michael addition, with .alpha., .beta.-unsaturated groups bonded via carbonyl, carboxyl and/or carboxylic amide groups, a C.dbd.C equivalent weight of 85-1800 and a weight average molecular weight of 170-50000. The equivalent ratio of A to B is 2:1 to 1:2. The coating agent contains solvents and conventional lacquer additives, and optionally contains water, pigments and/or fillers. It results in particularly acid-resistant coatings and is particularly suitable for producing covering lacquer and clear lacquer coatings in the motor-vehicle sector.

Abstract: A process for crosslinking a polymer containing hydroxyl groups which process comprises:(a) forming a mixture of said polymer and crosslinking amount of a poly(alpha, beta-alkenylcarboxylate), and(b) maintaining the mixture at conditions under which the polymer cures by reaction of the hydroxyl groups of the polymer with the poly(alpha, beta-alkenylcarboxylate) to produce a crosslinked polymer.

Abstract: A rubber composition permits good adhesion upon crosslinking to fiber materials and offers good adhesion after thermal aging. The rubber composition includes about 1/10 to about 1/1000 mol of an organic peroxide and either about 0.5 or about 10 parts by weight of an organic compound having two or more acrylate groups or methacrylate groups and one or more carboxyl groups in the molecular structure or about 1 to about 30 parts by weight of a carboxy-modified rubber per 100 parts by weight of a rubber crosslinkable with the organic peroxide.

Abstract: Redispersible polymer powders made by core-shell polymers having an alkali-soluble emulsion polymer shell and an aqueous-insoluble emulsion polymer core wherein the core and the shell polymers are chemically grafted by utilizing a polyfunctional compound. The core-shell polymers are produced by a two-stage sequential emulsion polymerization process in which an alkali-insoluble emulsion polymer core is polymerized in the presence of an alkali-solubilized emulsion polymer. When the core-shell polymer powders of this invention are employed as a cement modifier, improvements in the powder physical properties and cement mortar properties are realized.

Abstract: Additive compositions comprising ethylene-vinyl acetate copolymers suitable for use in molding compositions are disclosed. The ethylene-vinyl acetate copolymers have a low degree of crystallinity which can provide a desirable balance of pigmentability, shrinkage resistance and solubility in styrene when used in molding compositions containing the ethylene-vinyl acetate copolymers.

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: Graft copolymers are disclosed which comprise an olefin borane-containing homopolymer or copolymer backbone polymer having radically polymerized polymeric segments chemically bonded as side chains or as a chain end. A borane-containing diene homopolymer or a copolymer of a diene and/or at least one alpha-olefin having from about 2 to 22 carbon atoms copolymerized with another monomer containing organoborane functional groups can be used as a backbone polymer to prepare the graft copolymers of the present invention. Under oxidation conditions, the borane group becomes the reaction site for the radical polymerization and copolymerization. Radical polymerizable monomers, such as methyl methacrylate, styrene, alpha-methylstyrene, acrylonitrile and the like, can be polymerized to yield high molecular weight graft copolymer. By this synthetic route, high graft efficiency is observed with only a very low concentration of homopolymer being produced.

Abstract: Linear, star or dendrimeric block copolymers are composed of from 10 to 90% by weight of at least one block of one or more acrylates of an alcohol of 1 to 8 carbon atoms and from 10 to 90% by weight of at least one block of one or more methacrylates of an alcohol of 1 to 8 carbon atoms, each block having a number average molecular weight of from 1,000 to 100,000 g/mol and the quotient M.sub.w /M.sub.n (weight average/number average) of each block being less than 2, and said block copolymers may be blended with styrene copolymers or acrylate copolymers and, if required, acrylate rubbers.

Abstract: The invention relates to the preparation of a graft copolymer latex of core/shell dispersion particles having improved phase binding between core and shell in a two-stage emulsion polymerization process, hydroperoxide groups being produced at the particle surface of the grafting base prior to grafting by hydrogen peroxide treatment.

Abstract: A blend of a polyolefin, such as polypropylene, with a segmented copolymer containing both polyolefin segments and segments derived from greater than 20 to about 100% of a vinyl aromatic monomer is useful in applications where high melt strength is desired.

Abstract: A vinyl polymer is obtainable by polymerizing vinyl monomers in at least two stages by a procedure in which, in a first stage, from 5 to 95% by weight of vinyl monomers are polymerized in an organic solvent or in the absence of a solvent and, in the second stage, from 5 to 95% by weight of the vinyl monomers are polymerized in the presence of the vinyl polymer obtained in the first stage, likewise in an organic solvent or in the absence of a solvent, with the proviso that the polymerization in the second stage is carried out under conditions under which an average molecular weight M.sub.n, which is at least 1,000 higher compared with that of the vinyl polymer, the first stage of results for the vinyl monomers of the second stage in the absence of the vinyl polymer obtained in the first stage.

Abstract: Refrigerator and freezer liners are molded from rubber modified graft copolymers of acrylonitrile and methyl acrylate. These polymers comprise 14 to 30 percent by weight of a butadiene-acrylonitrile elastomer rubber. Further these polymers show excellent impact strength at low temperatures and are resistant to solvents used as blowing agents for refrigerator and freezer insulation.

Abstract: A novel graft copolymer having a number-average molecular weight of about 1,500 to about 1,000,000, produced by graft-copolymerizing an alkylene oxide and a cyclic ester to a saponified ethylene-saturated carboxylic acid vinyl ester copolymer; a process for production thereof; and a plasticizer comprising said graft copolymer as the active component.

Abstract: Graft copolymers are prepared by the reaction of an olefin polymer such as polyethylene or polypropylene with an ethylenically unsaturated t-alkylcarbamate compound. Said graft copolymers are capable of reaction with functionalized polyphenylene ethers to produce compatibilized polyphenylene ether-olefin polymer compositions.

Abstract: A lubricant for a thermoplastic resin, which is a three-stage polymer obtained by (A) polymerizing 80-100 w.t.% of methyl methacrylate and 0-20 w.t.% of other copolymerizable monomer so that the reduced viscosity .eta.sp/C of the obtained polymer is not higher than 2 dl/g, (B) polymerizing 30-70 weight parts of a monomer mixture composed of 20-80 w.t.% of an acrylic acid ester and 80-20 w.t.% of styrene or a substituted styrene in the presence of 10-60 weight parts of the polymer obtained at stage (A), so that the reduced viscosity .eta.sp/C of the copolymer obtained by polymerizing 5 to 30 weight parts of a monomer or monomer mixture composed of 50-100 w.t.% of a methacrylic acid ester and 0-50 w.t.% of other copolymerizable monomer in the presence of the two-stage polymer formed through stages (A) and (B), is that the total amount of the components used at staged (A), (B) and (C) is 100 weight parts and the reduced viscosity .eta.

Abstract: An aqueous dispersion or solution of a polymer obtained by free radical polymerization and comprising from 0.01 to 10% by weight of carboxyl groups --CO.sub.2 H or sulfo groups --SO.sub.3 H contains, as a crosslinking agent, a compound having at least two vinyl ether groups.

Abstract: An unsaturated polyester resin composition for the production of cured molded article which comprises:an unsaturated polyester resin; anda core-shell polymer as a low shrinking agent which comprises:(a) a cross-linked core layer polymerized from a first monomer comprising an aromatic vinyl monomer in an amount of not less 50% by weight, the core layer being contained in the core-shell polymer in an amount of 50-90% by weight; and(b) a shell layer polymerized from a monomer comprising methyl methacrylate in an amount of not less 50% by weight;and the core-shell polymer having a refractive index in the range of 1.52-1.58 and within .+-.0.02 from the refractive index of the cured material of the unsaturated polyester resin.

Abstract: A graft polymer based on an ultrahigh molecular weight polyethylene having a molecular weight of at least 1,000,000 g/mol and an alkenecarboxylic acid or alkenecarboxylic anhydride as the graft monomer; the polymer has modified and improved properties compared with ultrahigh molecular weight polyethylene. The preparation and use thereof are also described.

Abstract: Star polymers having first polymeric arms comprising a hydrogenated conjugated diene and smaller second polymeric arms of a methacrylate resist coupling of methacrylate blocks attached to different cores and have improved performance as viscosity index improvers. The polymerized methacrylate units are converted to amide or imide groups by reaction with a primary or secondary amine to give the viscosity index improver dispersant properties.

Abstract: There is a demand for very clear tough polymers or polymer blends, particularly in the packaging industry. Crystal polystyrene is clear but lacks toughness. HIPS is tough but lacks the required clarity. Blends of styrene-ester polymers with a very small amount of HIPS do provide a very clear tough polymer alloy.

Abstract: A process for making a graft propylene copolymer in which a propylene polymer, selected from the group consisting of propylene homopolymers and propylene copolymers, is contacted with a polymerizable, unsaturated carboxylic acid or acid derivative in the presence of a coagent, said coagent selected from the group consisting of a first compound having the structural formula ##STR1## where R is a hydrocarbyl or a radical containing at least one atom of oxygen, sulfur, nitrogen, phosphorus or silicon; R.sup.1 is hydrogen or C.sub.1 -C.sub.12 alkyl or aryl; and x is an integer of 1 to 4, and a second compound having the structural formula ##STR2## where R' is a hydrocarbyl or a radical containing at least one atom of oxygen, sulfur, nitrogen, phosphorus or silicon; R.sup.2 is hydrogen or C.sub.1 -C.sub.1 2 alkyl or aryl; and y is an integer of 2 to 4, and a free radical generating compound.

Abstract: Modified chlorinated polyethylene (CPE) for use as an impact modifier for polyvinyl chloride, comprising a thermoplastic grafted CPE prepared by polymerizing compatible monomers or comonomers, e.g. methyl methacrylate/styrene, methylmethacrylate or vinyl acetate, onto the CPE backbone via an aqueous slurry suspension polymerization and the process of producing the cited modified chlorinated polyethylene.

Abstract: A fluorochemical graft copolymer comprising: a base polymer comprising polymerized units derived from monomers having terminal olefinic double bonds, having a moiety comprising a fluoroaliphatic group grafted thereto. Also disclosed are processes for preparing such fluorochemical graft copolymers, forming and annealing methods for enhancing the surface activity of such a graft copolymer, polymer blends comprising such a fluorochemical graft copolymer and a matrix polymer that is miscible with the base polymer, and a method for reducing the surface energy of a polymer comprising polymerized units derived from monomers having terminal olefinic double bonds.

Abstract: A method for producing a graft-modified copolymer comprising the step of subjecting 100 parts by weight of an unsaturated copolymer comprising an .alpha.-olefin of 3 to 12 carbon atoms and a cyclic olefin represented by the following formula (I), and 0.1 to 300 parts by weight of a radically polymerizable monomer to the radical polymerization conditions: ##STR1## wherein R.sup.1 is a C.sub.2-5 alkylidene group or a C.sub.2-5 alkenyl group, R.sup.2 is a C.sub.1-5 hydrocarbon radical or H, and n is 0, 1 or 2.The graft-modified copolymer is imparted with various properties which are attributed to the polymer chain formed from the radically polymerizable monomer, without the excellent properties inherent in an .alpha.-olefin polymer being impaired. The copolymer is excellent in compatibility with other resins.