Back to results
US 4,284,699 AGranted
Polyester binder component in multilayer photoconductive element
AssigneeEastman Kodak Company
InventorsMartin A. Berwick, Edgar E. Riecke
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeEastman Kodak Company
InventorsMartin A. Berwick, Edgar E. Riecke
Estimating the term…
A multilayer photoconductive element containing a photoconductive insulating composition and a conducting layer, such element having in association with the photoconductive composition an amorphous, water-insoluble polyester selected from the group consisting of (a) polyesters prepared from units derived from at least one aromatic dicarboxylic acid component and at least one diol component, at least one of said acid or diol components being a non-linear monomer selected from the group consisting of an isophthalic acid component or a branched-chain alkylene diol having the formula HO--CH.sub.2 --R.sup.1 --CH.sub.2 --OH wherein R.sup.1 is a branched-chain alkylene group, and (b) polyester copolymers prepared from units derived from at least one aromatic dicarboxylic acid component and at least one diol component, at least one of said acid or said diol components being a mixture of at least two different acids or two different diols, respectively, so that a copolymer is obtained, and at least one of said acid or one of said diol components being selected from the group consisting of a non-linear monomer as defined above or a cycloaliphatic diol; with the proviso that said photoconductive insulating composition contains a minor amount of said polyester.
In a multilayer photoconductive element having a photoconductive insulating composition in electrical contact with a conducting layer, the improvement wherein said element comprises, as a component of said photoconductive composition, an amorphous, water-insoluble polyester which is substantially free of any acid functions and is selected from the group consisting of
In a multilayer photoconductive element having a photoconductive insulating composition in electrical contact with a conducting layer, the improvement wherein said element comprises, as a component of said photoconductive composition an amorphous, water-insoluble polyester copolymer being substantially free of all acid functions and having recurring units derived from at least one aromatic dicarboxylic acid component and at least one diol component, at least one of said acid or one of said diol components being a mixture of at least two different acids or two different diols, respectively, so that a copolyester is obtained, and at least one of said acid or one of said diol components being selected from the group consisting of a non-linear monomer or a cycloaliphatic diol, said non-linear monomer selected from the group consisting of an isophthalic acid component or a branched-chain alkylenediol having the formula
A multilayer photoconductive element having an optically homogeneous organic photoconductive insulating composition in electrical contact with a conducting layer, said element comprising, as a component of said photoconductive composition, an amorphous, water-insoluble polyester copolymer being substantially free of any acid functions and containing repeating units represented by each of the following structural formulas:
A multilayer photoconductive element having an optically homogeneous organic photoconductive insulating composition in electrical contact with a conducting layer, said element comprising, as a component of said photoconductive composition, an amorphous, water-insoluble polyester copolymer being substantially free of any acid functions and containing repeating units represented by each of the following structural formulas:
A multilayer photoconductive element having a multiphase aggregate photoconductive composition in electrical contact with a conducting layer, said element comprising, as a component of said photoconductive composition, an amorphous, water-insoluble polyester being substantially free of any acid functions and containing repeating units represented by each of the following structural formulas:
A multilayer photoconductive element having a multi-active photoconductive insulating composition,
Dependencies are inferred from the claim text.