Patent · US Active

Rigid polyurethane foams for insulation and process for producing same

US7619014B2 · kind B2 · utility

6Cited by
9References
30Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 23, 2002
Grant dateNov 17, 2009
Priority date—
Expiry dateNov 11, 2026

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08J2375/04
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

A rigid polyurethane foam having lose density without an increased k-factor can be produced by adding small amounts of butyl alcohol to a polyurethane composition containing an isocyanate, at least one polyol, a catalyst and a gaseous blowing agent.

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