Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1991-08-30
1995-03-07
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521118, 521123, 521124, 521126, 521130, 521131, 521164, 521170, 521902, 25218224, 25218225, 25218226, 25218227, 25218228, C08J 914, C08G 1822, C08G 1824, C08K 509
Patent
active
053958594
ABSTRACT:
The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which are capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol.
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Demmin Timothy R.
Eibeck Richard E.
Knopeck Gary M.
Parker Robert C.
Ruszaj Donna M.
Allied-Signal Inc.
Brown Melanie L.
Friedenson Jay P.
Sergent Rabon
Welsh Maurice J.
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