Method for producing polyurethane-soft foam materials

Details Method for producing polyurethane-soft foam materials Method for producing polyurethane-soft foam materials

2005-09-20

2009-12-01

Cooney, John (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S137000, C521S163000

Reexamination Certificate

active

07625954

ABSTRACT:
The invention relates to a process for producing flexible polyurethane foams, in particular molded flexible polyurethane foams, by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups, wherein at least one polyether alcohol bi) which has been prepared by means of a DMC catalyst and has a hydroxyl number in the range from 15 to 35 mg KOH/g, and ethylene oxide content in the range from 5 to 18% by weight, based on the total weight of the polyether alcohol and an end block of ethylene oxide and propylene oxide having an ethylene oxide content of from 25 to 75% by weight, based on the amount of alkylene oxide in the end block, is used as compound b) having at least two hydrogen atoms which are reactive toward isocyanate groups.

REFERENCES:
patent: 5648559 (1997-07-01), Hager
patent: 6288133 (2001-09-01), Hagquist
patent: 2004/0147627 (2004-07-01), Hager et al.
patent: 1 199 323 (2002-04-01), None
patent: 1 277 775 (2003-01-01), None
patent: 1 403 301 (2004-03-01), None
patent: 91 18909 (1991-12-01), None
patent: 97 23530 (1997-07-01), None
patent: 97 27236 (1997-07-01), None
patent: 99 51657 (1999-10-01), None
patent: 01 57104 (2001-08-01), None
patent: 03 059980 (2003-07-01), None

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