Method for producing impact-resistant polyester resin compositio

Details Method for producing impact-resistant polyester resin compositio Method for producing impact-resistant polyester resin compositio

1994-09-27

2000-01-25

Short, Patricia A.

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

Synthetic resins

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

525166, 525173, 525175, 525176, C08L 3314, C08L 6702

Patent

active

060179996

ABSTRACT:
A saturated polyester resin composition excellent in impact resistance is prepared by melt kneading (A) 30-58 parts by weight of a saturated polyester resin, (B) 42-70 parts by weight of an epoxy group-containing ethylene copolymer comprising (a) 50-99% by weight of ethylene unit, (b) 0.1-30% by weight of unsaturated carboxylic acid glycidyl ester unit or unsaturated glycidyl ether unit, and (c) 0-49% by weight of ethylenically unsaturated ester compound unit, (C) 0.01-20 parts by weight of a polyfunctional compound containing at least two specific functional groups of amino groups, carboxyl groups, carboxylic acid anhydride groups, hydroxyl groups or ##STR1## unit (wherein X and Y are both oxygen atoms or sulfur atoms or one of them is an oxygen atom and another is a sulfur atom) and (D) 0-30 parts by weight of a block copolyether ester elastomer, the amounts of (C) and (D) being based on 100 parts by weight of (A) plus (B), thereby to obtain a former-stage composition (I) and furthermore melt kneading the resulting composition (I) with (E) 50-1000 parts by weight of a saturated polyester resin and (F) 0-30 parts by weight of a block copolyether ester elastomer at a later-stage.

REFERENCES:
patent: 4172859 (1979-10-01), Epstein
patent: 4956501 (1990-09-01), Sunseri

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