Polyurethane foam for cushioning materials

Details Polyurethane foam for cushioning materials Polyurethane foam for cushioning materials

1990-12-27

1992-07-07

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521160, 521174, 521176, C08G 1814

Patent

active

051283816

ABSTRACT:
Disclosed herein is a polyurethane foam for cushioning materials. The polyurethane foam is formed by reacting a mixture of a polyol component, a polyisocyanate component and other optional components. The polyol component contains a mixed polyol which is composed of a low-hydroxyl-number polyol having a hydroxyl number of 30-80 and a high-hydroxyl-number polyol having a hydroxyl number of 350-600 and has an average hydroxyl number of 120-170. The mixture may additionally contain a plasticizer component containing at least one kind of plasticizer having one active hydrogen atom per molecule.

REFERENCES:
patent: 3857800 (1974-12-01), Fishbein et al.
patent: 4923904 (1990-05-01), Hasegawa et al.

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