Patent · US Expired

Method for recovering aromatic polyethers

US4673730A · kind A · utility

1Cited by

5References

6Claims

0Family size

Assignee

Rohm Co., Ltd. · JP

Inventors

Hermann Siegert · Weiterstadt, DE
Werner Ude · Darmstadt, DE

Key dates

Filing date	Apr 18, 1986
Grant date	Jun 16, 1987
Priority date	—
Expiry date	Apr 18, 2006

Classification

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

Abstract

Method for recovering an aromatic polyether as a solid product from a solution thereof in an organic solvent by precipitating with a fluorohydrocarbon which may also contain chlorine or bromine and which boils at -30.degree. C. to +100.degree. C.

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