Polyester elastomer composition

Details Polyester elastomer composition Polyester elastomer composition

1999-09-09

2000-03-14

Acquah, Samuel A.

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

Synthetic resins

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

525437, 525439, 525450, 524 86, C08F 2000

Patent

active

060374233

ABSTRACT:
A polyester elastomer composition comprising a polyester block copolymer and a compound having, in one molecule, not less than two functional groups capable of reacting with a terminal group of the polyester block copolymer, and showing (A) a weight loss (volatility) at 150.degree. C., 2 hours of not more than 0.4% and (B) a gelation degree (gel fraction) at 250.degree. C., 4 hours of not more than 50%; and a polyester elastomer composition comprising a polyester block copolymer, a compound having, in one molecule, not less than two functional groups capable of reacting with a terminal group of the polyester block copolymer and a chain extender heating loss percentage satisfying the formula: (W1-W2)/W1.ltoreq.0.1, and a stabilizer comprising a tertiary amine as a part of its skeleton. From such composition, an elastomer molded product having fine mechanical strength, heat resistance and resistance to hydrolysis, which shows less volatility during heating and less gel and bleed out, can be obtained.

REFERENCES:
patent: 5574090 (1996-11-01), Gray et al.
patent: 5783626 (1998-07-01), Taylor et al.
patent: 5827928 (1998-10-01), Morimoto et al.

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