PURPOSE: To provide a non-rigid vinyl chloride resin compsn. having improved moldability and resistance to weather and impact, by blending a graft copolymer and a plasticizer with a vinyl chloride resin.
CONSTITUTION: 100pts.wt. vinyl chloride resin having a vinyl chloride content of 70wt% or above, 5W50pts.wt. graft copolymer (B) obtd. by using an acrylic elastomer (A) and 10W300pts.wt. plasticizer are blended together. The acrylic elastomer (A) has a degree of swelling of 5W25 and can be obtd. by polymerizing a mixture of a monomer mainly composed of a C2WC10-alkyl acrylate or a mixture of said monomers with a polyfunctional crosslinking agent (e.g. divinylbenzene). The graft copolymer (B) is obtd. by grafting 25W150pts.wt. monomer mainly composed of a C1WC4-alkyl methacrylate or mixture thereof onto 100pts.wt. acrylic elastomer (A) to such an extent that the graft ratio is 50% or below.
UEDA KAZUO
KITAI KIYOKAZU
MATSUMOTO SHIRUYOSHI
| JPS4879852A | 1973-10-26 |