Patent · US Expired

Light stabilized polymer compositions

US3935163A · kind A · utility

12Cited by
9References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 28, 1974
Grant dateJan 27, 1976
Priority date
Expiry dateMay 28, 1994

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08K5/13
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Organic polymeric materials normally subject to oxidative and ultraviolet light deterioration are stabilized by incorporating therein a nickel bis-3,5-dialkyl-4-hydroxybenzoate, an ultraviolet light absorber such as a benzophenone or a benzotriazole, a light stabilizer such as a p-hydroxybenzoate ester and optionally a primary phenolic antioxidant with or without a secondary sulfur containing antioxidant.

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