Patent · US Expired

Process for improving the color of resinous compositions

US4169114A · kind A · utility

2Cited by

3References

40Claims

0Family size

Assignee

General Electric Company · US

Inventors

Glenn D. Cooper · Delmar, US
Daniel E. Floryan · Glenmont, US
Irwin Schraga · Guilderland, US

Key dates

Filing date	Mar 7, 1978
Grant date	Sep 25, 1979
Priority date	—
Expiry date	Mar 7, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G65/46
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

There is provided a process for improving the color of resinous compositions consisting of, or including, polyphenylene ether resins by contacting such resins with an amine. The process is carried out generally at elevated temperatures and pressures with either a primary, secondary or tertiary amine.

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