Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1983-09-13
1985-08-06
Lee, Lester L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528126, 528128, 528173, 528176, 528179, 528180, 528181, 528182, 528190, 528191, 528193, 528194, 528271, C08G 6328
Patent
active
045337209
ABSTRACT:
In a process for preparing aromatic polyesters (polyarylates) by heating a bisphenol (e.g., Bisphenol-A), at least one dicarboxylic acid (e.g., terephthalic acid and isophthalic acid) and acetic anhydride, a gamma-butyrolactone, such as gamma-butyrolactone, is employed a diluent, reducing sublimation of reactants, and resulting in higher molecular weight of the polymer.
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Carver Lyell H.
Lee Lester L.
Phillips Petroleum Company
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