Process for preparing improved polyarylates

Details Process for preparing improved polyarylates Process for preparing improved polyarylates

1992-09-29

1993-12-28

Kight, II, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528190, 528194, G08G 6300, G08G 6302

Patent

active

052740692

ABSTRACT:
A polyarylate is formed by reacting a mixture of esters of a dihydric phenol and trisphenol, at least one aromatic dicarboxylic acid, an alkali metal catalyst, an inert diluent having a boiling point of from about 200.degree. C. to about 300.degree. C. Polyarylates of improved shear sensitivity and higher molecular weight can be formed.

REFERENCES:
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patent: 4294956 (1981-10-01), Berger et al.
patent: 4374239 (1983-02-01), Berger et al.
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patent: 4533720 (1985-08-01), Yu
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patent: 4764580 (1988-08-01), Martin et al.
patent: 5004796 (1991-04-01), Vicari et al.
Robert W. Stackman, "Preparation of Aromatic Polyesters of Hindered Phenols by Acid Interchange Polycondensation. 1. Solvent Effects", Ind. Eng. Chem. Prod. Res. Dev., 1981, 20 336-338.

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