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US 4,213,870 AGranted
Cleaning and lubricating compositions and method of using the same
OwnerThomas J. Loraninventor
Life of this patent
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Abstract
Compositions including fluorinated alkyl esters are provided. Such compositions are useful for cleaning and lowering the coefficient of friction of the surfaces of various articles. In certain preferred embodiments tetrafluorethylene telomers and/or antistatic materials are included in the compositions.
Claims16
A lubricating composition consisting essentially of:
- fluorinated alkyl esters including a chemical structure having a fluorinated alkyl hydrophobic tail terminating in a hydrophilic ester group and having the structure
- R(CF.sub.2).sub.n COOR'
- wherein R is a material selected from the group consisting of H and CF.sub.3, R' is a short chain alkyl compound, and n is equal to a positive integer such that the fluorinated alkyl esters have a relatively high molecular weight on the order of at least 300 which are normally solid under ambient conditions;
- and
- another material selected from the group consisting of at least one of tetrafluoroethylene telomers and compatible anti-static agents.
2 more elements
The method of lubricating the surface of an article comprising the steps of:
- intermixing a fluorinated alkyl ester having a relatively high molecular weight which is normally solid under ambient conditions with a material selected from the group consisting of tetrafluoroethylene telomers and anti-static agents compatible with said fluorinated alkyl esters and together with a volatile solvent for the composition;
- and
- applying said mixture in a thin film to the surface to be lubricated whereby when the solvent evaporates a solid, wear-resistant lubricant coating is left upon the surface.
A lubricating composition adapted for application in the form of a solid coating to the surface of a plastic article comprising:
- a fluorinated alkyl ester including a chemical structure having a fluorinated alkyl hydrophobic tail terminating in a hydrophilic ester group, said fluorinated alkyl ester having the structure
- R(CF.sub.2).sub.n COOR'
- wherein R is a material selected from the group consisting of H and CF.sub.3, R' is a short chain alkyl compound and n is equal to a positive integer such that the fluorinated alkyl ester has a relatively high molecular weight on the order of 300 which is normally solid under ambient conditions;
- and
- a material selected from the group consisting of tetrafluoroethylene telomers and compatible anti-static agents, and mixtures of same.
2 more elements
The method of lubricating the surface of a plastic material comprising the steps of:
- intermixing a fluorinated alkyl ester with a material selected from the group consisting of tetrafluoroethylene telomers and anti-static agents compatible with said fluorinated alkyl esters together with a volatile solvent for the composition, said fluorinated alkyl esters having a fluorinated alkyl hydrophobic tail terminating in a hydrophibic ester group as defined by the structural formula
- R(CR.sub.2).sub.n COOR'
- wherein R is a material selected from the group consisting H and CF.sub.3, R' is a short chain alkyl compound, and n is equal to a positive integer such that the fluorinated alkyl ester has a relatively high molecular weight which is normally solid under ambient conditions;
- and
- applying said intermixture in a thin film to the surface to be lubricated whereby when the solvent evaporates a hard, solid wear-resistant lubricant coating is left upon the surface.
2 more elements
Dependencies are inferred from the claim text.