Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1997-12-08
1999-06-22
Mosley, Terressa
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
525 89, 525 90, 525 92, 525176, 525177, 525408, 525446, 528176, 528196, 528271, C08G 6400
Patent
active
059143860
ABSTRACT:
The invention relates to a novel copolyester elastomer essentially made up of A: hard polyester segments made up of repeating units derived from an aliphatic diol and an aromatic dicarboxylic acid and B: soft polyester segments made up of repeating units derived from B1: an aliphatic carbonate and, if desired, up to 60% by weight of B, B2: an aliphatic diol and an aliphatic dicarboxylic acid or B3: a lactone, said hard and soft segments being bonded via ester bonds to form copolyesterester units and said copolyesterester units being connected to one another by a urethane group.
The novel copolyester elastomer has an exceptionally high thermo-oxidative resistance and resistance to hydrolysis and is used, inter alia, in bellows, seals, pipes, hoses and cable sheathings.
REFERENCES:
patent: 4465793 (1984-08-01), Brennan et al.
patent: 4468483 (1984-08-01), Yeakey et al.
patent: 4483970 (1984-11-01), Huntjens et al.
patent: 5550190 (1996-08-01), Hasegawa et al.
Berendse Henk W.
Buning Gerard H. Werumeus
Schroder Christiaan
DSM N.V.
Mosley Terressa
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