Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1988-03-11
1989-05-23
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528176, 528271, 525425, 525439, 525444, C08G 6318
Patent
active
048332291
ABSTRACT:
A thermotropic copolyester, having a nematic structure of the liquid-crystalline phase within a desired range of mesophase temperature, contains units derived from a saturated aliphatic dicarboxylic acid, 4,4'-dihydroxy-biphenyl and p-hydroxybenzoic acid, in a mutual ratio of from 1:1:0.5 to 1:1:8.
This thermotropic copolyester is produced by copolymerizing in the molten state a saturated aliphatic dicarboxylic acid, 4,4'-diacyloxybiphenyl and p-acyloxybenzoic acid.
The use is disclosed of the thermotropic copolyester as a self-reinforced material, and as a reinforcer material for such traditional thermoplastic polymers as polybutylene terephthalate, polyethylene terephthalate, polycarbonate and nylon.
REFERENCES:
patent: 4599397 (1986-07-01), Yoshimura et al.
patent: 4762907 (1988-08-01), Kock
Bresci Bruno
Carrozzino Simona
Magagnini Pierluigi
Pedretti Ugo
Perego Giovanni
Anderson Harold D.
Eniricerche S.p.A.
Mason T.
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