Cured unsaturated polyester-polyurethane hybrid highly filled re

Details Cured unsaturated polyester-polyurethane hybrid highly filled re Cured unsaturated polyester-polyurethane hybrid highly filled re

1992-10-15

1994-04-12

Foelak, Morton

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523218, 521122, 521123, 521137, 521172, 521173, C08J 932

Patent

active

053026349

ABSTRACT:
The present invention is directed to a rigid, lightweight filled resin foam having voids dispersed in a continuous phase which is formed from a polyester polyol-polyurethane hybrid resin having reinforcing particles selected from fly ash, treated red mud and mixtures thereof dispersed therein. The hybrid resin may form an interpenetrating polymer network with a polyurethane and/or a modified hybrid polyurethane resin. The present invention is also directed to a process for preparing the above rigid, lightweight resin foam, and to a composition for use in this process. The foam of the present invention is useful in building materials and the like requiring high tensile and compressive strength and corrosion and thermal resistance.

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