Patent · US Expired

Process for rigid polyurethane foams

US5604265A · kind A · utility

8Cited by
12References
8Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 6, 1995
Grant dateFeb 18, 1997
Priority date
Expiry dateNov 6, 2015

Classification

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

Abstract

A process for the preparation of a fine celled, closed celled rigid polyurethane or urethane-modified polyisocyanate foam is disclosed which comprises reacting a polyfunctional isocyanate-reactive composition with a polyisocyanate composition, characterized in that the foam-forming composition comprises carbon black.

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