Mitsubishi Chemical Corporation

Hiroya Arai

Shinji Matsuoka

Misaki Hagi

Masashi Iimori

Masahiro Ueda

Saki Fujita

Atsushi Kuwahara

Naotaka Suenaga

Kenta Takemasu

Yuuta Maenaka

Ai Kiwa

Polyorganosiloxane-containing polymer particles comprising: a polymer (A) comprising a polyorganosiloxane (A1) and a first vinyl polymer (A2); and a second vinyl polymer (B), wherein a proportion of particles satisfying formula (1) is less than 60%:>0.1  (1),wherein L is a diameter of each particle of the polyorganosiloxane-containing polymer particles, as determined in an observation using a transmission electron microscope with respect to a cross section of a resin piece obtained by dispersing the polyorganosiloxane-containing polymer particles in a resin, and M is a maximum domain length of the polyorganosiloxane (A1) in the observation.

Polyorganosiloxane-containing polymer particle group, composition, resin composition, and molded body

Provided is a rubber-containing graft polymer capable of reducing wet heat aging of a shaped article while improving the strength developing property of a thermoplastic resin. In the rubber-containing graft polymer of the present invention, a content of components having a weight-average molecular weight of 800,000 or more is 1% by mass or more with respect to an organic solvent-soluble fraction (100% by mass) of the rubber-containing graft polymer, and a phosphorus content in the rubber-containing graft polymer is 3 to 30 mmol/kg.

Rubber-containing graft polymer, resin composition containing rubber-containing graft polymer, and shaped article of same

An object of the present invention is to provide a polyorganosiloxane-containing graft copolymer powder capable of providing a resin composition and a molded article which are excellent in balance between colorability and mechanical properties such as impact resistance. The polyorganosiloxane-containing graft copolymer powder according to the present invention is a graft copolymer powder obtained by graft-polymerizing a mixture (B) of a vinyl monomer (b1) having an epoxy group and another vinyl monomer (b2) to a rubber (A) containing a polyorganosiloxane, wherein the content of the polyorganosiloxane (A1) contained in the rubber (A) is 12 to 50% by mass, the mass average particle diameter of the polyorganosiloxane-containing graft copolymer powder is 300 to 2000 nm, and the epoxy equivalent of the polyorganosiloxane-containing graft copolymer powder is 2500 to 7800 g/eq.

Polyorganosiloxane-containing graft copolymer powder, and resin composition using the same, and molded article formed of the same

Provided is a rubber-containing graft polymer that can be uniformly dispersed in a thermoplastic resin containing an alloy in a particle size of 100 to 300 nm and can improve strength developability required as a rubber-containing graft polymer. In a rubber-containing graft polymer (A) of the present invention, a rubber to be grafted has a particle size of 100 to 300 nm, a content of an organic solvent insoluble component in the rubber-containing graft polymer (100% by mass) is 92% to 99.5% by mass, and an organic solvent soluble component of the rubber-containing graft polymer has a weight average molecular weight of 250,000 to 700,000.

Rubber-containing graft polymer, resin composition containing rubber-containing graft polymer, and shaped article thereof

Growing community of inventors

Tokyo, Japan

Hiroya Arai