Patent · US Active

Use of polyethers containing urethane for urea groups for stabilizing polyurethane foams

US8030366B2 · kind B2 · utility

26Cited by

8References

11Claims

0Family size

Assignee

EVONIK GOLDSCHMIDT GMBH · DE

Inventors

Michael Ferenz · Essen, DE
Christian Eilbracht · Herne, DE
Jutta Esselborn · Homberg (Efze), DE
Sascha Herrwerth · Essen, DE
Gabriele Platte · Castrop-Rauxel, DE

Key dates

Filing date	Sep 6, 2007
Grant date	Oct 4, 2011
Priority date	—
Expiry date	Nov 22, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L75/08
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to the use of polyethers containing urethane or urea groups as foam stabilizers, obtained by reacting at least one isocyanate with (a) at least one hydrophilic polyether which statistically carries at least one OH and/or NH2 and/or NH function and (b) at least one hydrophobic polyether which statistically carries at least one OH and/or NH2 and/or NH function and optionally (c) further compounds which carry at least one OH and/or NH2 and/or NH function and/or other isocyanate-reactive groups, such as carboxyl or epoxide functions, with the proviso that at least one isocyanate is ≧difunctional.

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