Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 2-methyl butane
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United States of America Patent
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Oct 8, 1996
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N/A
app pub date -
Dec 22, 1995
filing date -
Dec 22, 1995
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Abstract
Azeotropic compositions made up of from about 65 to about 81% by weight of 1,1,1,3,3-pentafluoropropane and from about 19 to about 35% by weight of 2-methyl butane have been found to be particularly useful as blowing agents for the production of polyurethane foams.
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