Cleaning solvent compositions and their use
AssigneeZynon Technologies, LLC
InventorsWells Cunningham, Elizabeth P. Norwood, Venesia L. Hurtubise
Life of this patent
Estimating the term…
Abstract
A cleaning solvent composition comprises from about 0.2 to 15 weight percent of mono- or di-phosphate ester in free acid form, and from about 85 to 99.8 weight percent of one or more halogenated hydrocarbon solvents. Other cleaning solvent compositions further comprise one or more alcohols. For example, such alcohol-containing compositions may comprise from about 0.2 to 15 weight percent of mono- or di-phosphate ester in free acid form, from about 2 to about 25 weight percent of one or more alcohols, and from about 25 to about 97.8 weight percent of one or more halogenated hydrocarbon solvents.
Claims22
A composition comprising from about 0.2 to about 15 weight percent of one or more free acid forms of phosphate ester surfactants selected from the group consisting of one or both of:
- wherein R is selected from the group consisting of one or more of ethoxylated hydrocarbons, alkylated hydrocarbons, fluorinated hydrocarbons, and ethoxylated and fluorinated hydrocarbons;
- from about 2 to about 25 weight percent of an alcohol selected from the group consisting of one or more of straight chain and branched alkyl alcohols, monohydric and polyhydric aromatic alcohols and monohydric and polyhydric heteroaromatic alcohols;
- and
- from about 25 to about 97.8 weight percent of one or more halogenated hydrocarbon solvents.
A composition comprising from about 0.2 to about 15 weight percent of one or more free acid forms of phosphate ester surfactants selected from the group consisting of:
- wherein R is selected from the group consisting of one or more of ethoxylated hydrocarbons, alkylated hydrocarbons, fluorinated hydrocarbons, and ethoxylated and fluorinated hydrocarbons;
- and
- from about 85 to about 97.8 weight percent of a halogenated hydrocarbon solvent.
Dependencies are inferred from the claim text.