Patent · US Expired

Process for the preparation of polyether-sulphones

US4775738A · kind A · utility

4Cited by

2References

10Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Paul J. Mayska · Krefeld, DE
Erhard Tresper · Krefeld, DE

Key dates

Filing date	Aug 27, 1986
Grant date	Oct 4, 1988
Priority date	—
Expiry date	Aug 27, 2006

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G75/23
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to the preparation of polyether-sulphones from polycarbonates.

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