Repellent compositions and elements containing the same
AssigneeEastman Kodak Company
InventorsWilliam E. Yoerger, John M. McCabe, John F. Wright
Life of this patent
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Abstract
A repellent composition containing an oil of low volatility having a surface energy less than 27 dynes/cm. and a solid fluorinated polymer such as a polymer of a fluoroalkyl acrylate. In accord with certain embodiments of the invention, a resinous binder and/or a particulate fluorocarbon powder may be added to the repellent composition. The repellent composition may be used to prepare an ink repellent surface for a "waterless" lithoplate or as a coating on the surface of an electrographic element from which a liquid developed electrographic image is transferred.
Claims6
A repellent composition comprising from about 1 to about 40 percent by weight of an oil of low volatility having a surface energy of less than about 27 dynes/cm selected from the group consisting of fluorinated oils and poly(siloxane) oils and from about 5 to about 98 percent by weight of a solid fluorinated polymer having repeating units of the following formula:
- ##EQU1## wherein R.sup.1 represents hydrogen or an alkyl group having 1 to about 4 carbon atoms and wherein Y represents a moiety having one of the following formulas:
- ##EQU2## wherein R is a fluorinated alkyl or a fluoroalkoxy substituted fluorinated alkyl having 1 to about 20 carbon atoms and n is 0 or 1.
A repellent composition comprising from about 2.5 to about 40 percent by weight of a fluorinated oil having a surface energy less than about 27 dynes/cm, from about 50 to about 80 percent by weight of a fluorinated hydrocarbon resinous binder, and from about 5 to about 98 percent by weight of a solid fluorinated polymer having repeating units of the following formula:
- ##STR10## wherein R.sup.1 represents hydrogen or an alkyl having 1 to about 4 carbon atoms and wherein Y represents a moiety having one of the following formulas:
- ##STR11## wherein R is a fluorinated alkyl or a fluoroalkoxy-substituted fluorinated alkyl having 1 to about 20 carbon atoms and n is 0 or 1.
Dependencies are inferred from the claim text.