Patent · US Expired

Blowing agent blends

US6319886A · kind A · utility

2Cited by
2References
3Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 16, 2001
Grant dateNov 20, 2001
Priority date—
Expiry dateFeb 16, 2021

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08J2375/04
  • WIPO fieldOther special machines
  • WIPO sectorMechanical engineering

Abstract

Foam blowing agents blends of 5-50 mole % HCFC-22 and 95-50 mole % of n-pentane, i-pentane and/or cyclopentane are provided, as are polyol premixes and polyurethane foam compositions containing such blends.

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