Process for preparing polyurethane foam in the presence of a hyd

Details Process for preparing polyurethane foam in the presence of a hyd Process for preparing polyurethane foam in the presence of a hyd

1994-10-20

1995-09-19

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521130, 521170, 521174, 521172, C08J 900

Patent

active

054516153

ABSTRACT:
Disclosed is a process for preparing a rigid, hydrocarbon blown, polyurethane foam by reacting a polyisocyanate with a polyol composition comprising a fatty oil. The fatty oil has a fatty acid content, especially a hydroxyl-substituted fatty acid, which enhances the miscibility of the hydrocarbon blowing agent. A preferred fatty oil is castor oil comprising as principle constituent the hydroxyl-substituted fatty acid, ricinoleic acid. Enhanced storage stability of a polyol composition containing hydrocarbon blowing agent in amounts required for production of low density foam is observed.

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