Mitsubishi Rayon Company, Limited

Techno Polymer Company Limited

Tsuneki Wakita

Toshihiro Kasai

Hideaki Makino

Masaki Maeda

Keiji Nakamura

Masahiro Osuka

Yasunobu Kaneko

Yasutaka Doi

Yohei Miwa

Disclosed is a (meth)acrylate polymer having a volume average primary particle size of 0.520 to 3.00 &#x3bc;m, a peak temperature of tan &#x3b4; in the range of &#x2212;100 to 0&#xb0; C., determined with dynamic viscoelasticity measurement, of &#x2212;40&#xb0; C. or below, a peak height of tan &#x3b4; in the range of &#x2212;100 to 0&#xb0; C., determined with dynamic viscoelasticity measurement, of 0.300 or more, and an acetone-insoluble component of 99% by mass of more. This polymer has excellent dispersibility of primary particles in a resin, excellent storage stability of a resin composition obtained, and excellent insulating properties and reduction in elastic modulus of a molded article obtained.

(Meth)acrylate polymer, a resin composition and a shaped article

A modifier for resin has an average particle size of 20 &#x3bc;m or more, wherein particles having an average particle size of 10 &#x3bc;m or less account for less than 30% by mass of the modifier, and particles having an average particle size of 10 &#x3bc;m or less account for 30% by mass or more of the modifier after irradiating the modifier with ultrasonic wave of 40 W for 5 minutes. Also a resin composition comprises 1 to 40% by mass of the modifier for resin and 99 to 60% by mass (the total amount of both components is 100% by mass) of a thermoplastic resin or a curable resin, and a molded article is produced by molding the same.

Modifier for resin and resin composition using the same and formed article

There is provided a resin which, in spite of having excellent impact resistance because of containing a rubber ingredient, can be molded into a haze-free and beautiful state across the entire surface of molded products even if the molded products are large-sized injection molded products, and is suitable for molded products on which a vapor deposition layer is formed by the direct vapor deposition method, and is suitable for molded products which are joined by the hot plate welding method, particularly molded products such as housing members of automotive lamps, which require weatherability. Also provided is a graft copolymer (B) obtained by polymerizing a (meth)acrylate monomer (b1) a homopolymer of which has a glass transition temperature exceeding 0&#xb0; C. in the presence of a composite rubber (A) containing a polyorganosiloxane (A1) and a poly(meth)acrylate (A2), and then polymerizing an aromatic vinyl monomer (b2) and a cyanided vinyl monomer (b3).

Graft copolymer, thermoplastic resin composition and molded product

Growing community of inventors

Otake, Japan

Tsuneki Wakita