Low density, water-blown, rigid polyurethane foams having good p

Details Low density, water-blown, rigid polyurethane foams having good p Low density, water-blown, rigid polyurethane foams having good p

1993-04-27

1993-11-02

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521167, 521174, C08G 1850

Patent

active

052584186

ABSTRACT:
The present invention relates to low density, water-blown, rigid foams with good physical properties made with blends of toluenediamine (TDA)/glycerine initiated polyols. The foams made using these blends exhibit no initial surface friability. Further, it was found that specific blends of lower hydroxyl number polyols could be used, thereby reducing isocyanate consumption without affecting the physical properties of the foam.

REFERENCES:
patent: 4410641 (1983-10-01), Narayan et al.
patent: 4904707 (1990-02-01), Lunney

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