Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1991-09-11
1992-04-07
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
252172, 521 98, 521910, C08J 914
Patent
active
051029200
ABSTRACT:
The present invention is directed to a novel azeotrope consisting essentially of from 25 to 35% by weight of 2-methylbutane and from 65 to 75% by weight of 1,1-dichloro-1-fluorethane, and the use thereof in the production of rigid, closed cell foams.
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Dishart and Creazzo "The DuPont Program on Fluorocarbon Alternative Blowing Agents for Polyurethane Foams"--pp. 59-66.
Doerge Herman P.
Mortimer Charles E.
Spitler Keith G.
Foelak Morton
Gil Joseph C.
Mobay Corporation
Whalen Lyndanne M.
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