Patent · US Expired

Method for the preparation of flexible polyester polyurethane foams

US5093376A · kind A · utility

8Cited by

6References

9Claims

0Family size

Assignee

Th. Goldschmidt. AG · DE

Inventors

Volker Mohring · Neheim, DE
Volker Zellmer · Bottrop, DE
Georg Burkhart · Essen, DE
Jurgen Fock · Goldkronach, DE
Hans-Heinrich Schlons · Essen, DE

Key dates

Filing date	Jul 18, 1990
Grant date	Mar 3, 1992
Priority date	—
Expiry date	Jul 18, 2010

Classification

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

Abstract

A method is disclosed for the preparation of flexible polyester polyurethane foam by reaction of at least difunctional polyesterols with at least difunctional organic isocyanates in the presence of catalysts and a stabilizer mixture of organic and organosilicon compounds, water, optionally blowing agents and optionally conventional additives, wherein the stabilizer mixture used comprises PA0 a) a (meth)allyl polyoxyalkylene ether polymer or its copolymer with vinyl monomers and PA0 b) a polyoxyethylene-polysiloxane block copolymer, in a ratio by weight of a:b of 1:9 to 9:1. The polyester foam obtained are open celled to a high degree and have an excellent die-cuttability.

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