Polycarbonate from heterocyclic bis(4-hydroxyphenyl)cycloalkane

Details Polycarbonate from heterocyclic bis(4-hydroxyphenyl)cycloalkane Polycarbonate from heterocyclic bis(4-hydroxyphenyl)cycloalkane

1992-12-11

1994-04-05

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528171, 528174, 528203, 528204, 546240, 549 13, C08G 6406, C08G 6408, C08G 6412

Patent

active

053006224

ABSTRACT:
Heterocyclic bis(4-hydroxyphenyl)cycloalkanes, as illustrated by 4,4-bis(4-hydroxyphenyl)thiopyran and the corresponding acetylated piperidine, may be prepared by the reaction of bisphenol A or a similar compound with the corresponding thiopyranone or piperidone. The thio compound may be oxidized to the corresponding sulfone. Polycarbonates prepared from said heterocyclic bis(4-hydroxyphenyl)cycloalkanes have high glass transition temperatures and are expected to be ductile.

REFERENCES:
patent: 3437637 (1969-04-01), Matzner et al.
patent: 3461098 (1969-08-01), Cotter et al.
Diederich et al., J. Org. Chem., 53, 2744-2757 (1988).

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