Patent · US Expired

Polycarbonate substrates

US6696542B1 · kind B1 · utility

0Cited by

0References

8Claims

0Family size

Assignees

BAYER HEALTHCARE LLC · DE
Bayer Antwerpen N.V. · BE

Inventors

Michael Bödiger · Dormagen, DE
Steffen Kuhling · Meerbusch, DE
Franky Bruynseels · Sint-Gillis-Waas, BE
Dirk Van Meirvenne · Bang Phra, TH
René de Cleyn · Brasschaat, BE

Key dates

Filing date	Aug 5, 2002
Grant date	Feb 24, 2004
Priority date	—
Expiry date	Aug 8, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31507
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polycarbonate substrates, the preparation of which is based on 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexanone, and their use for producing shaped articles with particularly high purity and extremely high surface brilliance and also the shaped articles which can be produced from the polycarbonate substrate are described.

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