Humidity tolerant charge director compositions
US5047306A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 1989 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | May 19, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/135
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A humidity tolerant charge director composition comprises a fine dispersion in a non-polar solvent of a charge direction material comprising a molecular charge director compound and an ionic charge director compound, each being conjugated to a polymer which is insoluble in non-polar organic solvents. The charge director material is prepared by adding to a solution of a molecular charge director compound and an ionic charge director compound in a non-polar organic solvent, a monomer compound capable of polymerizing to form a polymer which is insoluble in said solvent, initiating a polyerization reaction of the monomer compound and allowing the polmerization reaction to progress to completion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.