Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1990-04-06
1992-04-21
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
203 67, 252162, 252364, 252DIG9, 264 53, 264DIG5, C11D 730, C11D 750, C08J 914
Patent
active
051065274
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-fluoroethane, and the use thereof in the production of rigid, closed cell foams.
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Research Disclosure, vol. 162, Oct. 1977, p. 70, disclosure No. 16265 (E. I. Du Pont de Nemours & Co., Inc.).
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.
Gil Joseph C.
Lieberman Paul
Mobay Corporation
Skaling Linda D.
Whalen Lyndanne M.
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