Process for manufacturing polyurethane foams

Details Process for manufacturing polyurethane foams Process for manufacturing polyurethane foams

1994-11-30

1995-10-17

Hamilton, III, Thomas

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521155, C08G 1832, C08G 1848, C08G 1866

Patent

active

054591724

ABSTRACT:
The present invention is directed to flexible polyurethane foams useful as seat cushioning material for vehicles, aircraft, furniture and the like. The polyurethane foams are characterized by improved wet compression set properties, improved firmness, resilience and elongation. The foams are made by a process which comprises reacting a polyol having a hydroxyl equivalent of from 800-10,000, a glycerin derivative having oxyethylene groups thereon but characterized by having a significant number of unreacted secondary hydroxyl groups of glycerin, (c) water and (d) an organic polyisocyanate.

REFERENCES:
patent: 4111865 (1978-09-01), Seefried, Jr. et al.
patent: 4689357 (1987-08-01), Hongu et al.

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