Patent · US Expired

Polycarbonate from bi(tetrahydrofuran)di phenol

US5128437A · kind A · utility

3Cited by

2References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Uwe Westeppe · Mettmann, DE
Hans-Josef Buysch · Krefeld, DE
Ulrich Grigo · New Martinsville, US
Klaus Berg · Krefeld, DE

Key dates

Filing date	Oct 12, 1990
Grant date	Jul 7, 1992
Priority date	—
Expiry date	Oct 12, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G64/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to the use of the diphenol corresponding to formula (I) ##STR1## for the production of high molecular weight, thermoplastic, aromataic polycarbonates, to a process for the production of these polycarbonates and to the new thermoplastic having improved heat resistance obtainable by the process.

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