Denki Kagaku Kogyo Kabushiki Kaisha

Denki Kagaku Kogyo Kk

Tetsuro Maeda

Akihiro Okamoto

Susumu Ohoka

Fukuaki Wada

Kyoji Onaya

Yasuo Yoshii

Haruo Igawa

Isamu Nishinakagawa

Yoshimitsu Shimizu

Masafumi Shingai

Takashi Nomoto

A thermoplastic resin composition composed of a mixture comprising a graft polymer obtained by subjecting a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer to emulsion polymerization in the presence of a diene rubber latex, and a hard polymer obtained by copolymerizing a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer, in which the number average particle size Dn of diene rubber particles contained in the composition is at most 0.1 .mu.m, the ratio (Dw/Dn) of the weight average particle size Dw to the number average particle size Dn of the diene rubber particles is at least 5.0, the graft rate of said graft polymer is at least 60%, and the content of an emulsifier and a reaction product of an emulsifier is not higher than 2% by weight.

Thermoplastic resin composition

A molded article of a transparent ABS resin comprising 10 to 24% by weight of a diene type rubber having a weight average particle size of 150 m.mu. or less and not containing methyl methacrylate in the continuous resin phase is subjected to wet plating. The resulting plated resin article has an excellent adhesion of the plating layer and a good transparency.

Plated resin article

A polymer composition obtained by mixing, in an emulsion state,

Polymer composition

A thermoplastic resin composition composed of a mixture comprising:

Molding composition containing an elastomer-containing styrene resin, a

Disclosed is a wet-platable acrylonitrilebutadiene-styrene resin (ABS resin) composition comprising 100 parts by weight of an ABS resin and 0.1 to 10 parts by weight of a compound represented by the following general formula [I]: ##STR1## wherein R.sub.1 stands for an alkyl group, R.sub.2 and R.sub.3 each stand for a hydrogen atom or a methyl group, R.sub.4 and R.sub.5 stand for a hydrogen atom or a group --C(O)R.sub.6 in which R.sub.6 stands for an alkyl group, and m and n are integers of from 1 to 20. A plated resin article having an improved plating adhesion can be obtained by wet-plating a molded article formed from this ABS resin composition.

Resin composition and plated article thereof

A thermoplastic resin composition consists essentially of (A) 100 parts by weight of a rubber-containing styrene type resin and (B) 1 to 45 parts by weight of a polymeric substance selected from the group consisting of a homopolymer of an acrylic acid ester, copolymers of an acrylic acid ester, and a mixture of these polymers, said component (B) having a solubility parameter of from 8.4 to 9.8 (cal/c.c.).sup.1/2, a glass transition temperature of 20.degree. C. or below, a gel content of 70% by weight or below, and relative viscosity of a substance soluble in methylethyl ketone of 20 or below.

(1) A graft copolymer latex obtained by the copolymerization of a rubbery diene polymer latex with an aromatic vinyl monomer and an acrylic monomer is mixed with (2) a copolymer latex having a glass transition point of -40.degree. to 10.degree. C. and a volume-average particle size of at least 0.5.mu. obtained by the copolymerization of an olefin with a vinyl ester of a fatty acid while they are maintained in the form of latex to precipitate a solid resin, whereby a thermoplastic resin composition is obtained. The total solid resin contains at least 11 wt. % of the rubbery diene polymer and at least 1 wt. % of the copolymer of olefin/vinyl ester of fatty acid.

Thermoplastic resin compositions

An ABS resin composition comprises 100 parts by weight of an ABS resin having a melt index of at least 4.0 g/10 min. and a rubber content of from 10 to 28% by weight and from 0.5 to 30 parts by weight of powder of at least one metal selected from aluminum, copper and an copper alloy.

Growing community of inventors

Ichihara, Japan

Tetsuro Maeda