Patent · US Expired

Bis[4'-(4-hydroxyphenyl)-phenyl]alkanes and polycarbonates prepared therefrom

US5319149A · kind A · utility

1Cited by

3References

2Claims

0Family size

Assignee

General Electric Company · US

Inventors

John T. Bendler · Rapid City, US
John Schmidhauser · Paoli, US
Kathryn Lynn Longley · Saratoga Springs, US

Key dates

Filing date	Oct 1, 1993
Grant date	Jun 7, 1994
Priority date	—
Expiry date	Oct 1, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G64/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Bis[4-(4-hydroxyphenyl)-phenyl]alkanes, as illustrated by 2,2-bis[4-(4-hydroxyphenyl)-phenyl]propane, may be prepared by the reaction of a bisphenol A ester or a similar compound with a p-trialkyltin-substituted anisole, followed by demethylation with a Lewis acid such as boron tribromide. Polycarbonates prepared therefrom are ductile and have high glass transition temperatures.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.