Process for the preparation of aromatic polyesters

Details Process for the preparation of aromatic polyesters Process for the preparation of aromatic polyesters

1996-02-15

1998-02-03

Acquah, Samuel A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528179, 528180, 528185, 528491, 528492, 528503, 524284, 524356, C08G 6300

Patent

active

057145679

ABSTRACT:
An improved process for the preparation of aromatic polyesters, whereby dialkyl esters of aromatic dicarboxylic acids are melt-polymerized with aromatic bisphenol to furnish an amorphous poly(arylester) prepolymer. The amorphous poly(arylester) prepolymer is crystallized, separated, and dried to provide a crystallized poly(arylester) prepolymer, which is heated to yield the aromatic polyester.

REFERENCES:
patent: 3684766 (1972-08-01), Jackson, Jr. et al.
patent: 4314051 (1982-02-01), Berger et al.
patent: 4330668 (1982-05-01), Hideo et al.
patent: 4374239 (1983-02-01), Berger et al.
patent: 4386183 (1983-05-01), Wempe
patent: 4485230 (1984-11-01), Yu
patent: 5164478 (1992-11-01), Lee et al.
patent: 5340908 (1994-08-01), Idage et al.

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