Patent · US Expired

Benzylidenemalonic or vinylogous benzylidenemalonic acid polyesters, their preparation and their use for the UV stabilization of thermoplastics

US4588807A · kind A · utility

2Cited by

6References

22Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Thomas Scholl · New Haven, US
Reinhard Preuss · Krefeld, DE
Burkhard Lachmann · Rotterdam, NL
Hartmut Lower · Krefeld, DE
Peter Muller · Leverkusen, DE

Key dates

Filing date	Oct 17, 1984
Grant date	May 13, 1986
Priority date	—
Expiry date	Oct 17, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2495
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to new benzylidenemalonic or vinylogous benzylidenemalonic acid polyesters containing structural units of the formula (I) ##STR1## their preparation and their use for the UV stabilization of thermoplastics, preferably thermoplastic, aromatic polycarbonates, thermoplastic, aromatic polyesters or thermoplastic polymethylmethacrylates.

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