Displacement of organic liquid films from solid surfaces by non aqueous systems

Claim 2

A non-aqueous liquid composition for displacing liquid films from solid surfaces which consists essentially of a. a fluorinated polyether having the formula CF 3 CF 2 CF 2 [OCF(CF 3 )CF 2 ] n OCHFCF 3 , where n is an integer from 1 to 8 and said fluorinated polyether is present in an amount from 1 to 100 percent by volume; b. from 0 to 99 percent by volume of a solvent selected from the group consisting of volatile liquid perfluoroalkanes, volatile liquid fully fluorinated bromo- and chloro-alkanes, and fully substituted benzenes; and c. from 0 to 1 percent by weight of a solute selected from the group consisting of fluoroalcohols, fluoromonocarboxylic acids, partially fluorinated diesters.

Claim 3

A composition as defined by claim 1 wherein said solvent is 1,1,2-trichloro-1,2,2-trifluoroethane.

Claim 4

A composition as defined by claim 1 wherein said solute is selected from the group consisting of fluoroalcohols having the formula: F(CF.sub.2).sub.m CHROH wherein m is an integer from 1 to 11, and R is a member of the group consisting of hydrogen and perfluoroalkyl radicals having from 1 to 11 carbon atoms, F(CF.sub.2).sub.m (CH.sub.2).sub.n CH.sub.2 OH wherein m is an integer from 1 to 10 and n is an integer from 1 to 15, H(CF.sub.2).sub.m CH.sub.2 OH wherein m is an integer from 2 to 10, H(CF.sub.2).sub.m CHOH(CH.sub.3) and H(CF.sub.2).sub.m COH(CH.sub.3).sub.2 wherein m is an integer from 2 to 8, fluoromonocarboxylic acids of the formulae: F(CF.sub.2).sub.m (CH.sub.2).sub.n COOH wherein m is an integer from 1 to 10 and n is an integer from 2 to 16, F(CF.sub.2).sub.m COOH wherein m is an integer from 1 to 13, (CF.sub.3).sub.2 CF(CF.sub.2).sub.m COOH and CF.sub.3 (CF.sub.2 Cl)CF(CF.sub.2).sub.m COOH wherein m is an integer from 1 to 11, and H(CF.sub.2).sub.m COOH wherein m is an integer from 1 to 14, partially fluorinated diesters of the formulae: (CH.sub.2).sub.x CHR.sub.1 [COOCH.sub.2 (CF.sub.2).sub.m F].sub.2 wherein R 1 is a member of the group consisting of hydrogen, C 1 to C 12 straight chain alkyl, C 2 to C 12 straight chain alkenyl and phenyl radicals and m is an integer from 5 to 11, and (CH.sub.2).sub.x CHR.sub.1 [COOCH.sub.2 (CF.sub.2).sub.m H].sub.2 wherein R 1 and x have the values as above and m is an integer from 4 to 10.

Claim 5

A composition as defined in claim 3, wherein the solute is perfluorooctanol-1.

Claim 6

A composition as defined in claim 3, wherein the solute is F(CF 2 ) 7 (CH 2 ) 16 COOH.

Claim 7

A composition as defined in claim 3, wherein the solute is F(CF 2 ) 10 (CH 2 ) 10 (CH 2 ) 10 COOH.

Claim 8

A non-aqueous liquid composition consisting essentially of 1,1,2-Trichloro-1,2,2-trifluoroethane, a fluorinated polyether having the formula: CF.sub.3 CF.sub.2 CF.sub.2 [OCF(CF.sub.3)CF.sub.2 ].sub.n OCHFCF.sub.3 wherein n is an integer from 1 to 8 and said polyether is present in an amount from 1 % to 99.98 % by volume, and a fluorinated monocarboxylic acid having the formula F(CF 2 ) m (CH 2 ) n COOH, where m is an integer from 1 to 10, n is an integer from 1 to 8 and said acid is present in an amount from 0 to 1 percent by weight.

Claim 9

A non-aqueous liquid composition consisting essentially of 1,1,2-Trichloro-1,2,2-trifluoroethane, a fluorinated polyether having the formula: CF.sub.3 CF.sub.2 CF.sub.2 [OCF(CF.sub.3)CF.sub.2 ].sub.n OCHFCF.sub.3 wherein n is an integer from 1 to 8 and said polyether is present in an amount from 1 % to 99.98 % by volume, and a fluorinated monocarboxylic acid having the formula F(CF 2 ) m (CH 2 ) n COOH, where m is an integer from 1 to 10, n is an integer from 1 to 8 and said acid is present in an amount from 0 to 1 percent by weight.

Claim 10

A composition as defined by claim 7 wherein said fluorinated polyether is CF.sub.3 CF.sub.2 CF.sub.2 [OCF(CF.sub.3)CF.sub.2 ].sub.2 OCHFCF.sub.3 and said acid is F(CF 2 ) 10 (CH 2 ) 10 COOH.

Claim 11

A composition as defined by claim 7 wherein said fluorinated polyether is CF.sub.3 CF.sub.2 CF.sub.2 [OCF(CF.sub.3)CF.sub.2 ].sub.4 OCHFCF.sub.3 and said acid is F(CF 2 ) 7 (CH 2 ) 16 COOH.

Claim 12

A composition as defined by claim 7 wherein said fluorinated polyether is CF.sub.3 CF.sub.2 CF.sub.2 [OCF(CF.sub.3)CF.sub.2 ].sub.4 OCHFCF.sub.3 and said acid is F(CF 2 ) 3 (CH 2 ) 10 COOH.