| 摘要 |
PURPOSE:To obtain a polyester resin composition having high crystallization rate even by molding with a low-temperature mold at <=90 deg.C, excellent surface gloss, heat resistance and mechanical strength by blending a copolymer ester with a specific compound. CONSTITUTION:A composition comprising (A) pts.wt. copolymer ester composed of A1: terephthalic acid, A2: ethylene glycol and A3: a polyalkylene glycol having 400-20,000 number-average molecular weight wherein the content of A3 is 1-20wt.%, (B) 1-20 pts.wt. B1: a polyalkylene glycol-based compound shown formula I (R1 and R1' are H, alkyl or phenyl; R2 is 2-4C alkylene; in 5-100) and or B2; an epoxy compound shown by formula II (R3 is 2-4C alkylene; n is 1-100), preferably both dimethoxy-polyethylene glycol and polyethylene glycol diglycidyl ether, (C) 1-15 pts.wt. maleic anhydride modified polypropylene and preferably further glass fiber or an inorganic filler. |
