Patent · US Expired

Preparation of polyaryl ether ketones by electrophilic polycondensation

US5122588A · kind A · utility

7Cited by

7References

4Claims

0Family size

Assignee

BASF SE

Inventors

Juergen Koch · Schifferstadt, DE
Gerhard Heinz · Bad Dürkheim, DE

Key dates

Filing date	Feb 15, 1990
Grant date	Jun 16, 1992
Priority date	—
Expiry date	Feb 15, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G61/127
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polyaryl ether ketones which contain units of the formula ##STR1## are prepared by electrophilic polycondensation in an inert solvent in the presence of a Lewis acid and in the presence or absence of a Lewis base using a carbonyl halide as monomer component, said carbonyl halide being an oxalyl dihalide or a mixture thereof with another carbonyl halide.

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