Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1992-11-20
1994-03-29
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528176, 528193, 528194, C08G 6300, C08G 6302, C08G 6318
Patent
active
052985911
ABSTRACT:
Aromatic polyesters containing monomer units derived from terephthalic acid, one or more aromatic diols, such as bisphenol A, and one or more aromatic hydroxyacids, such as 4-hydroxybenzoic acid or 6-hydroxy-2-naphthoic acid, are described. The aromatic hydroxyacid is incorporated in a quantity sufficient to yield a polymer which is non-crystalline and which has a low enough softening temperature that it can be readily synthesized in the melt with a useful molecular weight without the need for subsequent solid state polymerization. These aromatic polyesters are useful for making transparent articles with high temperature properties.
REFERENCES:
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patent: 4189549 (1980-02-01), Matsunaga et al.
patent: 4311823 (1982-01-01), Imai et al.
patent: 5023314 (1991-06-01), Gupta et al.
patent: 5109101 (1992-04-01), Gupta et al.
British Polymer Journal, 12, pp. 154-162, Dec., 1980, by J. W. Jackson, Jr.
Hoechst Celanese Corp.
Kight III John
McGinnis James L.
Mosley T.
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