Method of producing aromatic polyesters

Details Method of producing aromatic polyesters Method of producing aromatic polyesters

1983-05-10

1987-03-03

Phynes, Lucille M.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528180, 528181, 528182, 528191, C08G 6322

Patent

active

046476490

ABSTRACT:
A method of producing aromatic polyesters by polycondensation of diols and carboxylic acids, comprising polycondensating said diols and said dicarboxylic acids in the presence of a sulfur compound of a general formula: ##STR1## wherein R.sub.1 represents a substituted or unsubstituted aryl, alkyl or aralkyl group, X represents a halogen atom.

REFERENCES:
patent: 3637601 (1972-01-01), Truce et al.
patent: 4334053 (1982-06-01), Freitag et al.
patent: 4412057 (1983-10-01), Asada et al.

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