Hole-transport liquid crystalline polymeric compounds, electrophotographic elements comprising same, and electrophotographic process
US5232801A · kind A · utility
8Cited by
4References
15Claims
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Key dates
| Filing date | Dec 23, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Dec 23, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/078
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are hole-transport polymeric liquid crystalline compounds having the formula (I) ##STR1## wherein A and B are alkylsubstituted siloxane or acrylate repeating units; PA1 S.sub.1 and S.sub.2 are alkylene spacer groups; PA1 L is a mesogenic group; PA1 HT is a hole-transport functionality; and PA1 x and y are integers, the ratio of x to y is from about 100 to about 0.1, the sum of x and y is from about 10 to about 500. Multi-active and single active electrophotographic elements comprising these compounds and electrophotographic processes are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.