Polyesters with low crystallization speed and process for producing them
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United States of America Patent
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Oct 12, 1993
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N/A
app pub date -
Jul 15, 1992
filing date -
Jul 18, 1991
priority date (Note) -
Expired
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Abstract
Low-crystallization-speed polyesters obtained by means of the polycondensation of terephthalic acid with at least one (C.sub.2 -C.sub.10)-(Cyclo)alkylene glycol in the presence of 2-50 mol % of a copolymerizable reactant of general formula: ROOC-Ar-OOC-Ar'-COO-Ar-COOR (I) wherein Ar and Ar' stand for aromatic radicals, and R stands for a hydrogen atom or a (C.sub.1 -C.sub.4)-alkyl radical, or the OR group is replaced by a halogen.
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