To obtain the subject composition capable of being extrusion molded and suppressing the occurrence of crack, etc., resulting from an abrupt shrinkage in curing, having improved brittleness and impact resistance, by including a specific polyester as a cross-linking agent.
This composition comprises a polyester as a cross-linking agent containing a vinylphenylene group, an acryloyl group or a methacryloyl group at one end or both ends and having ≥300 weight-average molecular weight. The polyester is obtained by reacting a carboxyl group at the end of a polyester with a styrene halide or a styrene derivative halide. A polyester diacrylate, a polyester dimethacrylate or a polyester urethane dimethacrylate is preferable as the polyester. Preferably the composition further contains styrene as a cross- linking agent and a thermoplastic resin as a molding auxiliary. A radical initiator such as methyl ethyl ketone peroxide-cobalt naphenate or the like may be cited as a polymerization initiator.
MAEDA IKUKATSU
MAEDA TAKUYA
KANZAKI HIROYUKI
KYOGYO KUMIAI KOYU BUTTON
| JPS4948402A | 1974-05-10 | |||
| JPH05222281A | 1993-08-31 | |||
| JPH03227389A | 1991-10-08 | |||
| JPH11209628A | 1999-08-03 |
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