Patent · US Expired

Flexible polyurethane foams

US5900442A · kind A · utility

12Cited by

8References

6Claims

0Family size

Assignee

IMPERIAL CHEMICAL INDUSTRIES LIMITED · GB

Inventors

Jan W. Leenslag · Neerijse, BE
Anthony Cunningham · Leefdaal, BE
Berend Eling · Ludwigshafen, DE

Key dates

Filing date	Apr 30, 1996
Grant date	May 4, 1999
Priority date	—
Expiry date	Apr 30, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S521/918
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Process for preparing a flexible polyurethane foam by reacting a polyisocyanate and two different polyols under foam forming conditions so as to prepare a rigid foam and by crushing the rigid foam so obtained. Flexible foams are obtained which do not show a major glass transition temperature between -100.degree. C. and +25.degree. C.

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