Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and hydrocarbons
AssigneeAlliedSignal Inc.
InventorIan Robert Shankland
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Abstract
Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams.
Claims6
An azeotrope-like composition consisting essentially of from about 31.6 to about 76.02 weight percent 1,1,1,3,3-pentafluoropropane and from about 68.4 to 23.98 weight percent n-pentane.
An azeotrope-like composition consisting essentially of from about 31.6 to 73 weight percent of 1,1,1,3,3-pentafluoropropane and from 27 weight percent to about 68.4 weight percent of n-pentane.
An azeotrope-like composition consisting essentially of from about 31.6 to 70.2 weight percent of 1,1,1,3,3-pentafluoropropane and from about 29.8 weight percent to about 68.4 weight percent of n-pentane.
Dependencies are inferred from the claim text.