Patent · US Expired

Method of preventing scorch in a polyurethane foam and product thereof

US4547528A · kind A · utility

0Cited by
17References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 24, 1984
Grant dateOct 15, 1985
Priority date—
Expiry dateDec 24, 2004

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08K5/18
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Incorporation of from about 0.001% to about 5% of a mixture of an N-alkanoyl-N,N'-dialkyl-phenylenediamine compound (e.g. N-heptanoyl-N,N'-di-sec-butyl paraphenylenediamine) and a fluorescent brightener (e.g., a bis(benzoxazole) substituted thiophene) in a flame retarded polyurethane foam formulation stabilizes the formulation against scorching as the foam is formed therefrom.

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