Patent · US Expired

Process for the manufacture of polyethers from bisphenates and sulfonyl halides

US4039511A · kind A · utility

4Cited by

2References

3Claims

0Family size

Assignee

BASF SE

Inventors

Harald P. Wulff · Via Enrico Fermi, US
Gerd Blinne · Worms, DE

Key dates

Filing date	Oct 14, 1975
Grant date	Aug 2, 1977
Priority date	—
Expiry date	Oct 14, 1995

Classification

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

Abstract

Process for the manufacture of polyethers, particularly sulfonyl group-containing aromatic polyethers. Alkali metal bisphenolates are reacted with arylsulfonyl halides and polycondensed. The polyethers are plastics which are resistant to high temperatures and may be used for making electrical appliances and circuits, household articles and sheeting.

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