Patent · US Expired

UV Light stabilized polycarbonate composition

US4228067A · kind A · utility

2Cited by

3References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Burkhard Lachmann · Rotterdam, NL
Hans Rudolph · Krefeld, DE
Wolfgang Cohnen · Leverkusen, DE

Key dates

Filing date	Jan 12, 1979
Grant date	Oct 14, 1980
Priority date	—
Expiry date	Jan 12, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/005
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Object of the invention are UV absorbents for numerous polymers which are distinguished by their comparative lack of self-color, high light absorption and good compatibility with the polymers as well as with other additives.

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