Thermotropic copolyesteramide, process for its preparation and u

Details Thermotropic copolyesteramide, process for its preparation and u Thermotropic copolyesteramide, process for its preparation and u

1990-11-13

1993-09-28

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528190, 528193, 528194, C08G 6300, C08G 6302, C08G 6318

Patent

active

052487539

ABSTRACT:
A thermotropic copolyesteramide, with a nematic structure of the liquid crystalline phase within a desired temperature range of the mesophase, contains a unit derived from: (a) a saturated .alpha., .omega.-dicarboxylic acid; (b) 4,4'-dihydroxydiphenyl; (c) p-aminobenzoic acid; (d) 2,6-dihydroxyriaphthoic acid.
A copolyesteramide of this type exhibits improved characteristics, especially in regard to its elastic modulus and tensile strength, when used as a self-reinforced material or as a reinforcement material for traditional thermoplastic polymers.

REFERENCES:
patent: 4833229 (1989-05-01), Magagnini et al.
patent: 5030703 (1991-07-01), Pielartzik et al.
Yumiko Kumazawa, Chemical Abs., vol. 13, No. 221, (C-598)(3569), May 23, 1989, Copolyester, Copolyester-Amide and Production of Injection-Moldable Material Prepared Therefrom.

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