Abstract:
The invention relates to a process for production of vinyl chloride resin composition, by uniform blending of 95 to 70 parts by weight of vinyl chloride resin, and 5 to 30 parts by weight of a modifying component obtained by graft-polymerizing upon a cross-linked copolymer rubber latex a first and then a second grafting component in a sequential two-stage process.
Abstract:
The invention relates to a process for production of vinyl chloride resin composition, by uniform blending of 95 to 70 parts by weight of vinyl chloride resin, and 5 to 30 parts by weight of a modifying component obtained by graft-polymerizing upon a cross-linked copolymer rubber latex a first and then a second grafting component in a sequential two-stage process.
Abstract:
By emulsion polymerizing a monomer mixture of an alkyl acrylate, styrene, and butadiene to produce an emulsion of a rubber polymer (A), adding to the latex containing 100 parts by weight of the rubber polymer (A) from 25 to 150 parts by weight of a monomer mixture (B) comprising an alkyl methacrylate, with or without a cross-linking monomer, and a vinyl monomer copolymerizable therewith, polymerizing the resulting mixture of the mixture (B) and the latex thereby to produce a graft copolymer (I), and mixing this graft copolymer (I) and a methacrylic resin (II), a methacrylic resin composition of high transparency, impact strength, and weather resistance is obtained.
Abstract:
Vinyl chloride polymer compositions of improved transparency, impact strength, and workability obtained by blending a substantial quantity of vinyl chloride polymers containing vinyl chloride as the principal constituent thereof and a supplemental quantity of a resin produced from post-polymerization of a monomer mixture of styrene, methylmethacrylate, and a crosslinking agent on coagulated particles of a latex containing butadiene polymer or butadiene-styrene copolymer.
Abstract:
Butadiene-styrene-methyl methacrylate copolymers prepared by graft-polymerization with cross-linked butadiene or polybutadiene-styrene copolymer latex of styrene-methyl methacrylate monomers and a cross-linking agent capable of copolymerizing with said monomers in two steps. Polyvinyl chloride resins incorporated with the graft copolymer exhibits improved mechanical strength and other physical properties.
Abstract:
POLYVINYL CHLORIDE RESIN COMPSITION HAVING EXCELLENT TRANSPARENCY AND IMPACT RESISTANCE PREPARED BY MIXING POLYVINYL CHLORIDE RESIN WITH AT LEAST TWO KINDS OF GRAFTCOPOLYMERS OF BUTADIENE-STYRENE-ACRYLIC MONOMERS, THE ONE HAVING A HIGHER REFRACTIVE INDEX THAN THAT OF THE POLYVINYL CHLORIDE AND THE OTHER HAVING A LOWER REFRACTIVE INDEX THAN THAT OF THE POLYVINYL CHLORIDE, BOTH GRAFT-POLYMERS BEING MIXED AT VARYING PROPORTIONS DEPENDING ON THE KIND AND QUANTITY OF ADDITIVE ASSISTANTS.