Rigid foams with improved insulation and physical properties

Details Rigid foams with improved insulation and physical properties Rigid foams with improved insulation and physical properties

1995-03-23

1995-10-24

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 521129, 521174, 521131, C08G 1806, C08G 1818

Patent

active

054610842

ABSTRACT:
Rigid polyurethane foams are produced by reacting an organic polyisocyanate with an amine-based polyether polyol in the presence of a catalyst, a hydrogen-containing fluorocarbon and a minor amount of water. These foams are characterized by K-factors which are about 0.135 BTU-in./hr.ft..sup.2 .degree.F. or less.

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Dishart et al, "The Dupont Program on Fluorocarbon Alternative Blowing Agents for Polyurethane Foams" Polyurethane World Congress 1987, Sep. 29-Oct. 2, 1987, pp. 59-66.

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