Rigid foam with improved "K" factor by reacting a polyol, a poly

Details Rigid foam with improved "K" factor by reacting a polyol, a poly Rigid foam with improved "K" factor by reacting a polyol, a poly

1985-01-31

1986-04-29

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521159, 521163, 521164, 521167, C08G 1814

Patent

active

045858047

ABSTRACT:
The K-factor and/or dimensional stability and/or expansion at demold properties of rigid foams are improved by including in the reaction mixture containing a polyol, polyisocyanate, foaming agent and catalyst, an appropriate amount of a compound containing at least one aliphatic primary amine group such as ethylene diamine.

REFERENCES:
patent: 3179606 (1965-04-01), Prescott et al.
Saunders et al., Polyurethanes, Part II, Interscience, NY, 1984, p. 212.

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