Aliphatic polyester resin composition containing copolymer

Details Aliphatic polyester resin composition containing copolymer Aliphatic polyester resin composition containing copolymer

2005-02-09

2010-12-07

Chen, Vivian (Department: 1787)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S069000, C525S070000, C525S078000, C525S079000, C525S080000, C525S081000, C525S082000, C525S165000, C525S166000, C525S176000, C525S177000, C525S326100, C428S480000, C428S500000, C428S523000

Reexamination Certificate

active

07847021

ABSTRACT:
A modified polyolefin resin comprising a copolymer having a structure that a propylene-based polyolefin segment (a) and a segment (b) containing a lactic acid as a constituent are bonded in a block state and/or a graft state through a vinyl monomer having a hydroxyl group, wherein a number average molecular weight of the propylene-based polyolefin segment (a) is from 1,000 to 100,000, a number average molecular weight of the segment (b) containing lactic acid as a constituent is from 1,000 to 200,000, and a weight composition of the propylene-based polyolefin segment (a) and the segment (b) containing lactic acid as a constituent is from 10/90 to 90/10. The modified polyolefin resin can be used in a resin composition containing an aliphatic polyester resin (A), a polyolefin resin (B) and the modified polyolefin resin (C). The composition can exhibit excellent heat resistance and impact resistance and can be used for molding various parts.

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