| 摘要 |
PURPOSE:To provide the title compsn. having excellent adhesion, mechanical properties and particularly excellent impact resistance during a repeated heating- cooling cycle, by incorporating a copolymer having epoxy groups and a rubbery graft polymer in an arom. polyester. CONSTITUTION:100pts.wt. arom. polyester (A) having a relative viscosity of 1.15-2.0 (in a 0.5% o-chlorophenol soln. at 25 deg.C) (e.g., polybutylene terephthalate) is blended with 1-80pts.wt. copolymer (B) having epoxy groups and an MFR of 0.1-100g/10min, composed of 1-50wt% unsaturated monomer having an epoxy group, represented by the formula I, II or III (wherein R is a hydrocarbon group having an ethylenically unsaturated bond; X is CH2, O or a bivalent group of formula IV; and R' is H or CH3) and 99-50wt% unsaturated monomer (b) having no epoxy group and copolymerizable with the component (a) (e.g., an olefin) and 1-80pts.wt. rubbery graft polymer (C) having a glass transition temp. of not higher than -20 deg.C, obtd. by grafting a vinyl monomer such as an arom. vinyl compd. or a vinyl cyanide compd. to a base such as polybutadiene. |
