Patent · US Expired

Manufacture of self-extinguishing urethane group-containing polyisocyanurate foams

US4035313A · kind A · utility

3Cited by

4References

4Claims

0Family size

Assignee

BASF SE

Inventors

Georg Falkenstein
Alfred Guthmann
John C. Hutchison · Chicago, US
Peter Weyland
Gerd Blinne · Worms, DE

Key dates

Filing date	Aug 4, 1975
Grant date	Jul 12, 1977
Priority date	—
Expiry date	Aug 4, 1995

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S521/902
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Self-extinguishing urethane group containing polyisocyanurate foams are prepared by reacting a polyisocyanate with a polyesterol obtained by condensing an aliphatic dicarboxylic acid with a mixture of an aliphatic diol and N,N'-bis-(ethanol-2)-diaminooctachlorodiphenyl.

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