US 6,699,829 B2 · Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds

Abstract

Chemical solvating, degreasing, stripping and cleaning agents. The agents are cleaning and solvating mixtures of dichloroethylene and alkoxy-substituted perfluoro compounds that contain six carbon atoms, with optionally highly fluorinated materials to retard flammability and/or other enhancement agents that improve and enhance the properties of the composition to accomplish its desired cleaning or solvating task. These other agents are one or more of the following materials: alcohols, esters, ethers, cyclic ethers, ketones, alkanes, aromatics, amines, siloxanes terpenes, dibasic esters, glycol ethers, pyrollidones, or low- or non-ozone depleting halogenated hydrocarbons. These mixtures are useful in a variety of solvating, vapor degreasing, photoresist stripping, adhesive removal, aerosol, cold cleaning, and solvent cleaning applications including defluxing, dry-cleaning, degreasing, particle removal, metal and textile cleaning.

Claims17

Dependent claims

A cleaning composition comprising a greater than about 50 weight percent of dichloroethylene (I) and one or more alkoxy-substituted perfluoro compounds that contain six carbon atoms (HFE6C) of the formula (II) R1—O—R2 where R1 is perfluorobutyl and R2 is ethyl, or R1 is perfluoropentyl and R2 is methyl, or mixtures thereof, and an additive selected from the group consisting of:

(A) a highly fluorinated compound of the formula CaFbHcXd where a is an integer from 2 to 8, b is an integer greater than a but less than 2a+2, d is 0,1, or 2, and c is less than or equal to 2a+2−b−d and X is O, N, halogen, or Si, and combinations thereof;
(B) an enhancement agent selected from the group consisting of alcohols, esters, ethers, cyclic ethers, ketones, alkanes, aromatics, amines, siloxanes, terpenes, dibasic esters, glycol ethers, pyrrolidones, low or non-ozone depleting halogenated hydrocarbons, and mixtures thereof;
and
(C) mixtures thereof.

1 more element

Dependencies are inferred from the claim text.

Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds

Life of this patent

Cleaning compositions containing dichloroethylene and six carbon alkoxy substituted perfluoro compounds

Life of this patent

Abstract

Claims17