| 摘要 |
PROBLEM TO BE SOLVED: To obtain a thermoplastic resin compsn. which is excellent in resistance to org. chamicals and in impact strength and does not allow cracks to occur in the acetic acid immersion test even when not annealed by compounding a specific ABS resin with specified amts. of a methyl methacrylate (co)polymer and an aliph. polyester. SOLUTION: This compsn. comprises an arom. vinyl-vinyl cyanide copolymer (B), a graft copolymer (A) formed from a rubbery polymer and monomers constituting ingredient B, a methyl methacrylate (co)polymer (C), and an aliph. polyester (D). In the compsn., the concn. of ingredient C is 1-25 wt.%; the concn. of ingredient D is 0.3-10 wt.%; and the ratio of the vinyl cyanide units to the sum of units in ingredients A and B except the rubbery polymer is 25-50 wt.%. Ingredients A and B may be produced by a simultaneous polymn. Ingredient C having an MFR of 15-100 g/10 min is used.ε-Polycaprolactone is esp. pref. as ingredient D. This compsn. is prepd. by melt mixing ingredients A, B, C, and D by a known method. |
