Abstract: Moisture-curable, melt-processible, graft copolymers are obtained by reacting certain direct ethylene copolymers having copolymerized therein a glycidyl containing comonomer, with a specific aminosilane, N-tert-butylaminopropyl trimethoxysilane. The compositions are useful as hot-melt moisture-curable adhesives, as co-extrudable adhesives, and in wire and cable and several other applications.

Abstract: A vulcanizable rubber composition comprising:(A) 100 parts by weight of a fluororubber polymer containing at least 10 mol % of vinylidene fluoride as constituting monomer units;(B) from 0.1 to 300 parts by weight of an organic silicon compound having an amino group; and(C) a vulcanizing agent in an amount sufficient to vulcanize Component (A).

Abstract: A low surface energy material comprising a volume grafted elastomer which is a substantially uniform integral interpenetrating network of a hybrid composition of a fluoroelastomer and a polyorganosiloxane, said volume graft having been formed by dehydrofluorination of said fluoroelastomer by a nucleophilic dehydrofluorinating agent, followed by a hydrosilation reaction, addition of a hydrogen functionally terminated polyorganosiloxane and a hydrosilation reaction catalyst.

Abstract: The present invention describes uncured fluorocarbon elastomer base compositions and cured fluorocarbon elastomer compositions comprising a fluorocarbon elastomer, an amorphous silicone resin, and optionally a polydiorganosiloxane gum or a hydrocarbon polymer elastomer. The cured fluorocarbon elastomers typically contain additional components such as an acid acceptor, a cure agent, and a filler. The cured compositions have high strength, low temperature flexibility, high solvent resistivity, and low fuel permeability.

Abstract: The capping of anionic polymers to make functionalized polymers is improved by using alkoxy silyl compounds having protected functional groups, such as acetal groups, as the capping agent. The protected functional groups are stable under a variety of conditions and then readily convert to more reactive terminal functional groups useful for making adhesives, sealants and coatings.

Abstract: A siloxane modified copolymer with the following general formula: ##STR1## wherein: x=1 to 1000; m=2 to 100; n=0 to 1000; z=0 to 2; y=1 to 3; (z+y)=3; and p=1 to 200; wherein R and R.sub.1 are independently selected from the group consisting of hydrogen, alkyl groups having 1 to 6 carbons, phenyl, benzyl or alkylphenyl having from 6 to 12 carbons; R.sub.2 is selected from the group consisting of C.sub.1 to C.sub.6 alkyl, phenyl, benzyl or alkylphenyl having from 6 to 12 carbons; R.sub.3 is methyl, ethyl or propyl; and Z is O, S, NH or NR' wherein R' is phenyl, C.sub.1 to C.sub.4 alkyl or C.sub.1 to C.sub.3 alkylphenyl. A process for obtaining siloxane modified copolymer comprising:reactively extruding organosiloxanes having reactive terminal groups with polyolefins having reactive groups, the molar ratio of the functional groups being from about 1:1 to about 1:100,000 in a substantially solvent-free environment at a temperature from about 150.degree. C. to about 350.degree. C.

Abstract: Cross-linked controlled density polyamines which are water-insoluble and swell at pH values up to about 8 are shown. These polyamines are useful in site-specific drug delivery systems.

Abstract: Sulfur-containing organosilicon compounds useful as coupling agents in vulcanizable rubbers to enhance various properties, including low rolling resistance for automobile tires, are prepared. Preferred compounds include .OMEGA., 106 '-bis (trialkoxysilylalkyl) polysulfides. In the preferred process scheme, sodium ethoxylate is reacted with hydrogen sulfide gas to yield sodium sulfide. The sodium sulfide is then reacted with sulfur to form the tetrasulfide. The product of that reaction is then reacted with chloropropyltriethoxysilane to form the compound 3,3'- bis (triethoxysilylpropyl) tetrasulfide. The use of hydrogen sulfide gas and sodium metal alcoholates provides an efficient and economical process.

Abstract: Described herein is a primer composition which comprises a solution or dispersion of: (a) about 2 percent to about 30 percent by weight of a film-forming resin; (b) about 2 percent to about 80 percent by weight of a reaction product of an epoxy silane and an amino silane, wherein the amino silane contains at least two amine groups per molecule, which is prepared by (1) contacting an amino silane and epoxy silane in amounts such that the molar ratio of epoxy silane to amino silane in the reaction mixture is less than about 1.8:1.0 and then (2) adding additional epoxy silane to the reaction mixture so that the molar ratio of epoxy silane to amino silane is at least about 2:1 in a volatile solvent. It has been discovered that the primer of the invention enhances the bonding of a non-porous substrate, such as glass, to a second substrate, particularly when used in conjunction with a "fast cure" adhesive comprised of an isocyanate-functional prepolymer and dimorpholinodiethyl ether.

Abstract: Fluoroinfused composites exhibiting low surface energy and low kinetic coefficent of energy are prepared via contact of a swellable polymeric material with a solution comprising a swelling solvent, an organofluorosilane and a gelling agent.

Abstract: A process is described for preparing blends of fluorocarbon plastomers such as vinylidene fluoride polymers with fluorosilicone elastomers to obtain materials having a unique combination of flexibility at low temperature and high mechanical strength. Vinylidene fluoride polymer is first exposed to radiation and then mixed with the fluorosilicone. Coagents such as diallylphtalate and triallylisocyanurate are also used to assist in grafting and compatibilizing the two polymers.

Abstract: A process is disclosed for producing six-armed and eight-armed asymmetric radial block copolymers. The process comprises anionically polymerizing a diene and/or a vinyl aromatic hydrocarbon to create living polydiene and/or vinyl aromatic hydrocarbon arms, sequentially anionically polymerizing a vinyl aromatic hydrocarbon and a diene to create living block copolymer arms and coupling the two sets of arms together in one step with a coupling agent that will couple six or eight arms, wherein the molar ratio of the vinyl aromatic hydrocarbon-diene arms to the polydiene arms is sufficient to produce a statistical blend with less than 5 weight percent homopolydiene.

Abstract: A silane functional oligomer for use in the formulation of coating compositions having good clarity which has at east one hydrolyzable silane group and which is the reaction product of;(i) a silane coupling agent having a hydrolyzable silane group and a secondary amine group,(ii) a polyisocyanate having more than one tertiary isocyanate group, and containing at least 6% by weight of NCO groups, and(iii) optionally, compound having single isocyanate reactive group.

Abstract: The present invention relates to the preparation of emulsion polymers bearing reactive functional groups which are post-reacted with an amino silane to promote crosslinking during film formation.Polymers of the present invention are particularly useful in polish and coating compositions where detergent resistance and removability are required.

Abstract: The present invention relates to the preparation of aqueous based polymers bearing reactive functional groups. More particularly, this invention relates to waterborne or water dispersed polymers that are equivalent in performance in applications formerly dominated by solvent based polymers.Polymers of the present invention have many uses including adhesives, saturant applications, solutions or dispersions in water or water-cosolvent mixtures, and are most useful as coatings and sealants for wood, glass, metal, concrete and binders for mortars and non-wovens.More specifically, surface coatings produced from polymers of the present invention exhibit improved properties such as: for example, durability, toughness, solvent resistance, dirt pickup resistance, print and block resistance and mar resistance.

Abstract: Holographic films are disclosed that contain a binder having the following formula:(M).sub.w (VAc).sub.x (VOH).sub.y (VOS).sub.zwherein M is a fluoromonomer; VAc is vinyl acetate; VOH is vinyl alcohol; and VOS is vinyl trimethylsilyl ether; and wherein w, x, y, and z are percentages by weight; w is 5 to 30, x is 40 to 80, y is 0 to 20, and z is 2 to 30; said copolymers containing 3 to 23% by weight fluorine. These imaged films are particularly suited for lamination to glass in head-up display applications.

Abstract: A composition useful in the fabrication of extruded articles contains a thermoplastic resin such as polyethylene and from 100-3,000 parts per million of a lubricant which is (i) an organosilicon resinous copolymer having a number average molecular weight of between 1,200-10,000 and R.sub.3 SiO.sub.1/2, R.sub.2 SiO.sub.2/2, RSiO.sub.3/2 and SiO.sub.4/2 units, wherein R is a C.sub.1 -C.sub.6 alkyl, aryl, alkenyl and/or trifluoropropyl radical(s); or (ii) the organosilicon resinous copolymer and a siloxane polymer R.sub.3 SiO(R.sub.2 SiO).sub.n SiR.sub.3 wherein R is as defined heretofore and n is 1-100,000; or (iii) the organosilicon resinous copolymer and an absorbing filler such as silica; or (iv) the organosilicon resinous copolymer, the siloxane polymer and an absorbing filler.

Abstract: Novel polymeric compositions are disclosed. The polymeric compositions, in particular, are either soluble or readily dispersible in water. Such polymeric compositions can be characterized as polymeric blends containing at least one acid-functional vinyl polymer and at least one amino-functional siloxane polymer. The novel polymeric blends further include volatile aqueous media comprising water and base in an amount that is effective for preventing the acid-functional moieties of the vinyl polymer from chemically reacting with the amino-functional moieties of the siloxane polymer. Such compositions or "blends", in general, comprise 60-99.9 parts-by-weight of the acid-functional vinyl polymer and 0.1-40 parts-by-weight of the amino-functional siloxane polymer, based upon total weight of the blended polymeric composition. Also disclosed are methods of producing the blended polymeric composition.

Abstract: A smear resistant thermally reactive material for use in a one-coat system, the thermally reactive material being applied to a receiver stock and consisting essentially of: about 55-75% wax; a binder of about 0.5-11% ethylene vinyl acetate; a pigment of about 6-26% color pigment; a dye of about 0.5-14% color forming dye; and a reactant of about 5-15% epoxy resin. The smear resistant thermally reactive material has a cohesive strength that inhibits smearing of data that is thermally transferred from an ink ribbon to the receiver stock. A crosslinking polymer for use in a two-coat system is also disclosed. The crosslinking polymer has a first coating consisting of a catalyst of 100% organosilane and a second coating consisting essentially of: about 55-75% wax; a binder of about 0.5-11% ethylene vinyl acetate; a pigment of about 6-26% color pigment; a dye of about 0.5-14% color forming dye; and a reactant of about 5-15% organosiloxane.

Abstract: This invention relates to fluorohydrocarbon polymers which are modified by the incorporation of substitiuents bearing a functional group such as vinyl, allyl, acrylate, alkoxysilane, amido, sulfonic acid salt, pyridine, carboxylic ester, and carboxylic salt. The functional groups may be further reacted to obtain branching, grafting, or crosslinking of the polymers. Copolymers of vinylidene fluoride and hexafluoropropene such as VITON A rubber and KYNAR FLEX 2801 plastomer, are typical of the class of fluorohydrocarbon polymers which are modified to obtain the new materials of this invention.

Abstract: Moisture-curable, melt-processible, graft copolymers are obtained by reacting certain direct ethylene copolymers having copolymerized therein a glycidyl containing comonomer, with a specific aminosilane, N-tert-butylaminopropyl trimethoxysilane. The compositions are useful as hot-melt moisture-curable adhesives, as co-extrudable adhesives, and in wire and cable and several other applications.

Abstract: There is disclosed a linear block copolymer comprising at least one triblock I-B-I, wherein I is a block of a polymerized conjugated diene of at least 5 carbon atoms, such as isoprene, and B is a block of a polymer of a conjugated diene, different from that of formula (1), of at least 4 carbon atoms, such as 1,3-butadiene. The B block is selectively hydrogenated, while each of the I blocks retains a sufficient amount of its original unsaturation to vulcanize the copolymer. There is also disclosed an alternative linear block copolymer containing at least one triblock of the first polymer block made from an aryl-substituted olefin, such as styrene, and the conjugated diene used to polymerize the block I, the second middle polymer block of the diene used to polymerize the block B, and the third polymer block which is the same as the first polymer block.

Abstract: A silane-capped polyurethane block copolymer comprising at least one polyester block and at least one polyacrylate block is disclosed. The copolymer can be used in coatings, and is particularly useful as a primer coating, especially as a primer for non-porous surfaces to which adhesives will be applied.

Abstract: This invention relates to fluorohydrocarbon polymers which are modified by the incorporation of substitiuents bearing a functional group such as vinyl, allyl, acrylate, alkoxysilane, amido, sulfonic acid salt, pyridine, carboxylic ester, and carboxylic salt. The functional groups may be further reacted to obtain branching, grafting, or crosslinking of the polymers. Copolymers of vinylidene fluoride and hexafluoropropene such as VITON A rubber and KYNAR FLEX 2801 plastomer, are typical of the class of fluorohydrocarbon polymers which are modified to obtain the new materials of this invention.

Abstract: The present invention relates to an organopolysiloxane graft epoxy resin comprising a reaction product of (A) an epoxy resin having at least two epoxy groups in its molecule and (B) an amino modified polyorganosiloxane. The compositions of the present invention are characterized by superior surface lubricity after curing, superior release properties, and superior water repellency. The present invention also relates to a method of making an organopolysiloxane graft epoxy resin.

Abstract: A process for making a fluorinated copolymer is disclosed. The process comprises polymerizing a monomer to form a polymer and then terminating the polymerization by adding a perfluorinated alkyl chlorosilane to the polymer. The perfluorinated alkyl chlorosilane reacts with the polymer to form a copolymer having a fluorinated terminal portion thereon.

Abstract: There are disclosed novel, solid, elastomeric block copolymers with improved resistance to cold flow wherein either 1) the terminal blocks are polymers of at least one conjugated diene I, e.g., isoprene, which contains at least five carbon atoms with at least one of each pair of double-bonded carbon atoms in the polymerized diene I units being additionally single-bonded to two carbon atoms, at least one middle or interior block is a polymer of butadiene, and at least one middle or interior block is a polymer of at least one aryl-substituted olefin, e.g., styrene; or 2) the terminal blocks are random copolymers of at least one diene I as previously defined and butadiene, and at least one middle or interior block is a polymer of at least one aryl-substituted olefin.

Abstract: A liquid-absorbent composition comprising (a) a polymeric matrix component comprising crosslinked silanol moieties, and (b) a liquid-absorbent component comprising a water-absorbent polymer, preferably a water-soluble polymer. This composition is capable of forming liquid-absorbent, semi-interpenetrating polymeric networks, which are capable of absorbing significant quantities of those liquids that are solvents for the uncrosslinked portion of the network without loss of physical integrity and without leaching or other forms of phase separation. The compositions of this invention provides polymeric matrices which result in transparent coatings capable of providing improved combinations of ink absorption and durability, while at the same time retaining transparency and being amenable to the types of processing commonly used in producing transparent graphical materials.

Abstract: A curable composition for paint including(A) 10 to 99 parts by weight of a vinyl polymer having a number average molecular weight of not less than 2,000 and at least one silicon atom to which a hydrolyzable group is bonded at an end of the main chain and/or in a side chain thereof, in one molecule, wherein the main chain is substantially a vinyl polymer chain;(B) 1 to 90 parts by weight of a compound containing a carbonyldioxy group which is at least one of(i) a compound containing a hydrolyzable silyl group, the compound having at least one carbonyldioxy group in one molecule and at least one silicon atom to which a hydrolyzable group is bonded, in one molecule, and(ii) a polycarbonate polyol compound having at least one carbonyldioxy group and at least two hydroxyl groups in one molecule; and(C) 0.001 to 10 parts by weight of a curing catalyst on the basis of 100 parts by weight of the components (A) and (B) in total.

Abstract: The present invention relates to novel piperidine compounds of the formula (I) ##STR1## in which A is e.g. a group of the formula ##STR2## where R.sub.4 is e.g. hydrogen or methyl, X.sub.3 is e.g. --O-- or --NH-- and R.sub.5 ' is e.g. ethylene, propylene or decamethylene, R.sub.1 is e.g. methyl, methoxy, ethoxy or OH, R.sub.2 and R.sub.3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X.sub.1 is e.g. as defined for R.sub.1 or is a group (CH.sub.3).sub.3 SiO-- and X.sub.2 is e.g. hydrogen, methyl, ethyl, a group (CH.sub.3).sub.3 Si-- or a group ##STR3## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond. The compounds of the formula (I) are effective in stabilising an organic material against thermal, oxidative and light-induced degradation.

Abstract: Disclosed herein are coating compositions comprising a fluoropolymer modified with a modifier. The modifier is a reaction product of at least one compound selected from polysiloxane compounds, fluorine-containing compounds and silane coupling agents, each containing at least one reactive organic functional group, with an organic polyisocyanate; and contains at least one free isocyanate group.

Abstract: Optical lens bodies and haptics therefore are prepared from polymeric materials wherein all surfaces of the materials are substantially biologically inert to occular tissue, all surfaces are substantially free of surface defects when viewed through a 10 power optical microscope, the materials have a contact angle with water of at least 85.degree., a contact angle with glycerol of least 75.degree. and a surface energy less than 30 erg/cm.sup.2.

Abstract: A method for preparing tapered block copolymers in a polymerization process by charging an initiator and monomers sequentially with one or more charges of first one of the monomers, then with a mixture of the two monomers, and then with one or more charges of the second monomer alternating with one or more charges of the first monomer with subsequent coupling to produce a polymodal tapered block copolymer. Suitable monomers include conjugated dienes and monovinylaromatic compounds. The copolymers are suitable for use in injection and blow molding equipment; the copolymers are particularly useful for shrink films, containers, tubes, fibers and other packaging applications.

Abstract: Diene polymers or copolymers having improved raw polymer viscosity and reduced hysteresis in the cured and carbon black reinforced state are provided. These diene polymers or copolymers are prepared by a method which involves first terminating substantially all of the living diene polymer or copolymer chains obtained by anionic polymerization with a compound having multiple-bonded nitrogen atoms selected from the group consisting of aromatic nitriles and substituted imines having the formula ##STR1## and then coupling a portion of the resultant terminated polymer chains with a polyfunctional reagent selected from the groups consisting of silicon polyhalides, polyisocyanates, phosphoryl halides and polycarboxylic acid halides.

Abstract: A coating composition prepared by adding 0 to 150 parts by weight, in terms of diorganosilane, of a hydrolyzate and/or a partial condensate of an diorganosilane (b), 2 to 300 parts by weight of a vinyl resin containing a silyl group (c), 0.01 to 50 parts by weight of a metal chelate compound (d), and an organic solvent (e), to 100 parts by weight in terms of organosilane of a hydrolyzate and/or a partial condensate of an organosilane (a), to which are added two or more mols of a type of .beta.-diketone and/or .beta.-ketoester (f) for one mol of the metal chelate compound (d).

Abstract: A coating composition which is capable of curing at ambient temperature to form a coating comprises (A) an anhydride-functional polymer containing at least two cyclic carboxylic acid anhydride groups per molecule and (B) an amine-functional polymer and is characterized in that the amine-functional polymer (B) contains at least two secondary amine groups per molecule, the polymer (B) being substantially free from hydroxy and ether oxygen atoms and amine nitrogen atoms in the alpha and beta positions with respect to the amine nitrogen atoms, and the carbon atoms directly bonded to the amine nitrogen atoms not being tertiary carbon atoms.

Abstract: The thermal properties, such as heat distortion temperature of biodegradable polymers, such as polylactic acid, polyglycolides, polybutyric acid and copolymers of butyric and valeric acid, may be increased by blending them with a polymer having Tg from 75.degree. C. to 200.degree. C. and a Hildebrand parameter (.sigma.) of not more than 3 MPA.sup.1/2 different from the biopolymer.

Abstract: There are disclosed novel, solid, elastomeric block copolymers with improved resistance to cold flow wherein either 1) the terminal blocks are polymers of at least one conjugated diene I, e.g., isoprene, which contains at least five carbon atoms with at least one of each pair of double-bonded carbon atoms in the polymerized diene I units being additionally single-bonded to two carbon atoms, at least one middle or interior block is a polymer of butadiene, and at least one middle or interior block is a polymer of at least one aryl-substituted olefin, e.g., styrene; or 2) the terminal blocks are random copolymers of at least one diene I as previously defined and butadiene, and at least one middle or interior block is a polymer of at least one aryl-substituted olefin.

Abstract: A primer composition for application to a substrate to promote adhesion of a room-temperature-vulcanizable silicone rubber coating, comprises (A) an aminosilane material, (B) a chlorinated polyolefin and (C) a room-temperature-curable polydiorganosiloxane. The aminosilane material (A) is a primary amine-functional silane or the reaction product of a primary amine-functional silane with an epoxy-functional silane or an alpha, omega-dihydroxypolydimethylsiloxane oil.

Abstract: A coating composition which cures at ambient temperatures and contains a binder and a solvent for the binder, wherein the binder contains about:A. an acrylic polymer A having pending from the polymer backbone aminoester groups, hydroxy aminoester groups or hydroxyamine groups,B. an acrylic crosslinking polymer B of polymerized monomers of at least 3% by weight of a glycidyl constituent of glycidyl methacrylate or acrylate, and the remainder of the monomers are alkyl methacrylate an acrylate each having 1-12 carbon atoms in the alkyl group;C. a polyester or polyesterurethane polymer C having at least 2 pendant groups of the formula ##STR1## the composition is useful as an exterior finish for automobiles and trucks and for repairing finishes of automobiles and trucks.

Abstract: This invention involved the discovery of novel polymers and a process for their preparation. The polymers were prepared by the nucleophilic substitution, at room temperature, of PVC with substituted alkyltrialkoxysilanes, which can be cured at room temperature to give adhesion of PVC to hydrophilic substrates. These polymers are particularly useful as adhesion promoters in ion-selective electrodes. The invention also involved the application of these adhesive primers to planar electrode substrates to give greatly improved performance in the response of ion-selective electrodes.

Abstract: A lubricating composition includes an emulsion of a noncuring polysiloxane, a surfactant and water. Preferred polysiloxanes include a polar group, most preferably an aminoalkyl or carboxylalkyl terminating group. Preferred surfactants are copolymers of polysiloxane and polyoxyethylene. A metal article such as a needle, blade, cannula or quidewire includes a coating of the polysiloxane and the surfactant which renders the article surface lubricious. The article may be in a sliding relationship with a plastic article in an assembly such as a catheter-quidewire or a catheter-cannula assembly. The plastic portion of the assembly may also include a lubricant. The invention includes a method of making the lubricated article.

Abstract: The invention relates to epoxy-terminated polymers and copolymers derived from hydrosilyl-terminated hydrogenated polydienes and polyvinyl aromatics, and a process for preparing these polymers and copolymers. The epoxy-terminated polymers and copolymers are reactive with a variety of polymer functionalities such as carboxyl, hydroxyl, and amino groups to produce copolymers useful as molded articles and as compatibilizers for compositions containing polyesters and polyolefins.

Abstract: The present invention relates to functionalized chlorinated (co)polymers and methods for their preparation. The functionalization is performed with an organometallic compound where the metal may be tin, lead, antimony or bismuth. The organic groups are hydrocarbons which may be substituted and one group is either a secondary amine or an ether which is eventually substituted by a trialkoxysilane or a hydroxy group. The preferred chlorinated polymer is PVC and the preferred functionalizing agent is an organotin compound.

Abstract: Coupling of block base copolymers terminated by a lithium atom of the typical formula S-B-Li, in which S is a monovinylaromatic hydrocarbon block and B is a conjugated diene block, by the use of at least one difunctional deactivating coupling agent and at least one polyfunctional deactivating coupling agent in a molar ratio such that the linear polymer obtained by coupling represents 65 to 95% by weight of the total polymer material obtained by coupling.

Abstract: One-pack chloroprene adhesive having excellent adhesion and excellent heat resistance, particularly excellent heat aging resistance, which comprises a chloroprene rubber modified with an aminosilane, a petroleum resin as a tackifier resin and an organic solvent, which is useful for adhering and laminating various products such as metallic materials, woven fabrics, fiber products, wooden products, leather products, plastic materials, etc.

Abstract: A novel siloxane polymer having at least 1 mol % of a structural unit derived from a cyclic heat addition product between a diene compound of formula (I) or (II) and an olefin or acetylene compound of formula (III), (IV) or (V): ##STR1## and a positive working light-sensitive composition comprising the siloxane polymer.

Abstract: A graft copolymer comprising a stock vinyl polymer comprised of vinyl acetal and vinyl alcohol units and grafted with an organopolysiloxane is described. A coating composition comprising the graft copolymer is also provided.

Abstract: The present invention is directed to a novel composition and the use thereof in various coating applications. The composition broadly comprises:a) an organic compound containing a primary amino group and an alkoxysilane group, andb) a plastic precursor containing at least two acetoacetate and/or acetoacetamide groups per molecule.

Abstract: A graft copolymer, comprising a trunk polymer comprising a vinyl chloride/vinyl alcohol copolymer containing vinyl chloride and vinyl alcohol as the essential constituent monomer units, and a branch polymer comprising an organopolysiloxane grafted onto said trunk polymer, and a coating composition comprising said graft copolymer as the main component. The coating formed from the composition is excellent in slippage, water repellency and mold release properties in addition to good characteristics derived from the vinyl chloride/vinyl alcohol resin.