Patent · US Expired

Method for the production of highly pure polycarbonate and ultrapure polycarbonate

US6620906B1 · kind B1 · utility

8Cited by

0References

15Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Thomas Elsner · Düsseldorf, DE
Jürgen Heuser · Krefeld, DE
Christian Kords · Krefeld, DE

Key dates

Filing date	Aug 2, 2002
Grant date	Sep 16, 2003
Priority date	—
Expiry date	Aug 2, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G64/406
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention provides a polycarbonate having a low particle content, a process for producing high-purity polycarbonate and polycarbonate of maximum purity and molded products made from such polycarbonate.

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