Patent · US Active

Additive mixture for stabilization of polyol and polyurethane

US10683409B2 · kind B2 · utility

0Cited by
14References
17Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 11, 2017
Grant dateJun 16, 2020
Priority date—
Expiry dateJan 11, 2037

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08K5/526
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

The invention relates to a composition, which comprises the components (a) an organic material susceptible to oxidative, thermal or light-induced degradation, which is a polyether polyol, a polyester polyol or a polyurethane; (b) a bisphenolic stabilizer of formula (I) wherein n is 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11; and (c) a chromanol stabilizer of formula (II) wherein R1 and R2 are independently of each other H or C1-alkyl. A process for manufacturing the aforementioned composition, the use of an additive mixture comprising component (b) and (c) for stabilizing the component (a) and the additive mixture itself are described.

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