Chlorofluorocarbon-free flexible polyurethane foams and method o

Details Chlorofluorocarbon-free flexible polyurethane foams and method o Chlorofluorocarbon-free flexible polyurethane foams and method o

1990-06-06

1992-11-24

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521163, 521170, 520 68, C08G 1032

Patent

active

051661853

ABSTRACT:
N,N'-di-sec-alkenyl-or-di-sec-alkyl-substituted methylene diphenyl diamines are effective curing agents for making polyurethane foams from MDI-based polyisocyanates. The diamines are especially advantageous since foams of lower density having lower hardness can be obtained without utilizing chlorofluorocarbous (CFC's) and without sacrificing tensile strength, tear strength, SAG or compression set values.

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