Perfluoroether release coatings for organic photoreceptors
AssigneeMinnesota Mining and Manufacturing Company
InventorsEdward J. Woo, Gaye K. Lehman
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Abstract
This invention is a photoconductive element comprising an electroconductive substrate, a photoconductive layer on a surface of the electroconductive substrate, and a release layer over the photoconductive layer. The release layer comprises a fluoroether polymer which is the reaction product of components comprising: A) a di-functional perfluoroether, B) a diisocyanate, C) an amino functional silane, and D) optionally, a diol chain extender.
Claims15
A photoreceptor element comprising an electroconductive substrate, a photoconductor layer, and a release layer comprising a perfluoroether urethane which is the reaction product of reactants comprising
- a) a di-functional perfluoroether,
- b) a diisocyanate,
- c) an amino functional silane, and,
- d) optionally, a diol chain extender.
A photoreceptor element comprising an electroconductive substrate, a photoconductor layer, and a release layer comprising a perfluoroether urethane having the structure:
- C--B--A--B--D!.sub.x --B--A!.sub.y --B--C,
- wherein A has the formula
- --O--R.sub.a --(R.sub.F).sub.m --R.sub.a --O--
- wherein each R.sub.a is a divalent linking group, each R.sub.F independently is perfluorinated oxyalkylene group from 1 to 5 carbon atoms, and m is an integer of from 5 to 50;
- B has the formula ##STR14## wherein R.sub.b is a divalent organic linking group;
- C has the formula ##STR15## wherein, R.sub.1, R.sub.2, and R.sub.3 are independently hydrogen, alkyl groups, aryl groups, and alkoxy groups, provided that at least one of R.sub.1, R.sub.2, and R.sub.3, is a hydrogen or an alkoxy group;
- R is an alkylene group, alkenylene group or arylene group;
- R.sub.4 is a hydrogen, alkyl groups of 1 to 5 carbon atoms, or an aryl group, and
- d is an integer up to 10;
- D has the formula
- --O--R.sub.d --O--
- wherein R.sub.d is a divalent organic linking group;
- and
- x is an integer from 0 to 10, and y is an integer from 1 to 10.
Dependencies are inferred from the claim text.