Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1991-02-11
1992-04-07
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528289, 528292, 528302, 5283086, 528310, 528322, C08G 63685
Patent
active
051029782
ABSTRACT:
It has been determined that the glass transition temperature of polyesters can be increased by incorporating certain imide-containing diacid monomers therein. This invention specifically discloses a copolyester which is comprised of repeat units which are derived from (a) a diol component and (b) a diacid component which is comprised of (1) from about 1 to about 15 mole percent of at least one imide-containing diacid monomer having the structural formula: ##STR1## wherein R represents an alkylene group, a substituted alkylene group, an arylene group, or a substituted arylene group, and (2) from about 85 to about 99 mole percent terephthalic acid or a diester thereof. N,N'-bis(1,3-methylene) cyclohexane bis-(trimellitimide) is a highly preferred imide-containing diacid monomer which can be utilized in making the polyesters of this invention.
REFERENCES:
patent: 4358561 (1982-11-01), Keske et al.
patent: 4861857 (1989-08-01), Kricheldorf et al.
CA111(20):174926g, "Tough Polyester-Polyimides and Their Manufacture".
CA110(22)194558w "Polyesters for Fibers, Films, and Engineering Plastics".
CA107 (20): 176743m "Fully-aromatic, Mesomorphic Polyester-Polyamide-polyimide".
CA73(15): 76907d "Diimides as UV Stabilizers and Antioxidants".
Murakami et al., "Polyesters for Fibers, Films and Engineering Plastics", CA110(22):194558w.
Hisgen et al., "Fully-aromatic, Mesmorphic Polyester-Polyamide-Polyimide", CA107(20): 176743m.
Acquah Sam A.
Kight III John
Rockhill Alvin T.
The Goodyear Tire & Rubber Company
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