Polyarylates having improved hydrolytic stability

Details Polyarylates having improved hydrolytic stability Polyarylates having improved hydrolytic stability

1990-04-20

1991-07-30

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528126, 528128, 528174, 528191, 528193, 528194, 525439, C08G 7528

Patent

active

050361503

ABSTRACT:
This invention relates to moldable polyarylates and in particular to moldable polyarylate compositions which have repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl) sulfone (TMBS), optionally a dihydric phenol such as 2,2-bis-(4-hydroxyphenyl)-propane (Bisphenol A) and a mixture of isophthalic acid and terephthalic acid or derivatives thereof. Such polyarylates exhibit improved hydrolytic stability.

REFERENCES:
patent: 4116940 (1978-09-01), Korshak et al.
patent: 4390682 (1983-06-01), Kyo et al.
patent: 4440920 (1984-04-01), Fujikake et al.
patent: 4499257 (1985-02-01), Maresca

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