Patent · US Expired

Benzofuranone or indolinone compounds useful as stabilizers for organic materials

US4611016A · kind A · utility

22Cited by

9References

22Claims

0Family size

Assignee

Ciba-Geigy · US

Inventors

Hans Hinsken · Lörrach, DE
Horst Mayerhoefer · Oberwil, CH
Wolfgang Mueller
Hermann Schneider · Schweich, DE

Key dates

Filing date	Dec 28, 1981
Grant date	Sep 9, 1986
Priority date	—
Expiry date	Dec 28, 2001

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/3417
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for stabilizing organic polymeric materials comprising incorporating therein a benzofuran (2) one or indolin (2) one compound as stabilizer. Such stabilized polymeric materials are stabilized against degradation during the polymer processing.

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