Kaneka Corporation

Toshio Mizuta

Akira Takaki

Tomomichi Hashimoto

Akio Sato

Mitsuo Kakutani

A thermoplastic resin composition comprising: a graft copolymer obtained by polymerizing 10 to 70 parts by weight of a monomer containing 60 to 100% by weight of at least one vinyl monomer selected from the group consisting of a (meth)acrylate ester compound, an aromatic vinyl compound and a vinyl cyanide compound and 0 to 40% by weight of a monomer which is copolymerizable therewith, in the presence of 30 to 90 parts by weight of hollow rubber particles which are rubber obtained by polymerizing a polymerization component comprising a butadiene without using a crosslinking agent and have a porosity of 3 to 90% in the form of a latex, wherein the total amount of the monomer and the rubber particles is 100 parts by weight; and a thermoplastic resin.

Thermoplastic resin composition having improved impact resistance

There is provided a rubber latex for an excellent impact modifier used for a thermoplastic resin. A rubber latex containing water in particles obtained by seed polymerization with seed polymers which are highly hydrophilic and sufficiently swellable into a rubber monomer is used as an impact modifier for a thermoplastic resin.

Process for producing rubber latex containing water in particle

There is provided an excellent impact modifier for a vinyl chloride resin. There is used, as an excellent impact modifier, a copolymer which is prepared by polymerizing 10 to 70% by weight of a monomer or monomers containing 60 to 100% by weight of at least one vinyl monomer selected from the group consisting of a (meth)acrylate compound, an aromatic vinyl compound, a vinyl cyanide compound and vinyl chloride, and 0 to 40% by weight of the other monomer copolymerizable therewith, in the presence of 30 to 90% by weight of a hollow rubber particle of which glass transition temperature Tg is at most 0&deg; C. and a void ratio is 3 to 90% by volume in a latex state, and which contains a cross linking agent in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the total rubber component monomer.

Growing community of inventors

Takasago, Japan

Toshio Mizuta