Patent · US Expired

Hydroxyaryl-tetramethyl-piperidines

US4038280A · kind A · utility

10Cited by
12References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 28, 1972
Grant dateJul 26, 1977
Priority date—
Expiry dateNov 28, 1992

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09K15/30
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

New 4-(4'-hydroxyaryl)-2,2,6,6-tetramethyl-piperidines are used as stabilisers for organic materials, especially for polymers.

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