Patent · US Expired

Process for the production of elastic, open-celled flexible polyurethane foams having increased compression hardness

US4782099A · kind A · utility

8Cited by

3References

12Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Manfred Dietrich · Leverkusen, DE
Hans-Walter Illger · Rösrath, DE
Peter Vogtel · Leverkusen, DE

Key dates

Filing date	Aug 21, 1987
Grant date	Nov 1, 1988
Priority date	—
Expiry date	Aug 21, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S521/914
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Flexible polyurethane foams having increased compression hardness are produced by reacting an organic polyisocyanate with a mixture of polyols in the presence of a blowing agent and optionally known additives such as catalysts, emulsifiers, etc. The mixture of polyols is (1) 75-95 wt % polyether polyol with terminal OH groups having a functionality of from 2 to 4 and an OH number of from 25 to 60 and (2) 5-25 wt % polyether polyol having a functionality of at least six and an OH number of from 150 to 200 which is the reaction product of an alcohol having a functionality of at least six and propylene oxide which has been modified to contain 5-50 wt % terminal ethylene oxide groups. These foams are useful in furniture applications.

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