Patent · US Expired

Method of manufacturing polyphenylene ethers

US4734485A · kind A · utility

9Cited by

2References

8Claims

0Family size

Assignee

Huls Aktiengesellschaft · DE

Inventors

Martin Bartmann · Recklinghausen, DE
Wilfried Ribbing · Dorsten, DE

Key dates

Filing date	Mar 30, 1987
Grant date	Mar 29, 1988
Priority date	—
Expiry date	Mar 30, 2007

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G65/44
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to the method of manufacturing polyphenylene ethers by an oxidative coupling reaction of monomeric phenols in a solvent mixture comprised of an aromatic hydrocarbon with 6-8 carbon atoms and an aliphatic alcohol with 1-4 carbon atoms in a volumetric ratio of the hydrocarbon to the alcohol of 92.5:7.5 to 50:50, in the presence of a catalyst comprised of cupric chloride, a secondary diamine, and morpholine.

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