Polyester interlayer and binder component in multilayer photoconductive element
US4173472A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1977 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Feb 14, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
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 PA1 (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 EQU HO--CH.sub.2 --R.sup.1 --CH.sub.2 --OH wherein R.sup.1 is a branched-chain alkylene group, and PA1 (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 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 as defined above or a cycloaliphatic diol; with the proviso that whe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.