Compositions of 1,1,1,2,2,5,5,5,-octafluoro-4-trifluoromethylpen

Details Compositions of 1,1,1,2,2,5,5,5,-octafluoro-4-trifluoromethylpen Compositions of 1,1,1,2,2,5,5,5,-octafluoro-4-trifluoromethylpen

1991-09-04

1993-06-22

Skaling, Linda

Cleaning and liquid contact with solids

Processes

Paints, varnishes, lacquers, or enamels, removal

134 12, 134 31, 134 40, 134 42, 203 67, 252153, 252162, 252170, 252171, 252172, 252364, 252DIG9, B08B 300, C11D 730, C11D 750, C23G 5028

Patent

active

052213617

ABSTRACT:
Mixtures of the compound 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with alcohols, ethers, esters, ketones, nitrogen-containing organic compounds, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said mixtures. Binary mixtures of 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with about 5 to 13 weight percent methanol, with about 2 to 10 weight percent ethanol, with about 3 to 11 weight percent isopropanol, with about 50 to 58 weight percent dichloromethane, and with about 1 to 9 weight percent acetonitrile, are disclosed as azeotrope or azeotrope-like compositions and are particularly suited for use where solvent recovery and reuse is practiced.

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