Organic silicone quaternary ammonium salt, producing method thereof, and toner and dry-type developer using the same for developing latent electrostatic images
US6120962A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Jan 16, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09741
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner for developing latent electrostatic images has toner particles which contain a resin, a coloring agent, and an organic silicone quaternary ammonium salt of formula (1): EQU [R.sup.1 R.sup.2 Si(CH.sub.2 CH.sub.2 CH.sub.2 NMe.sub.2 R).sub.2 ].sup.2+ 2X.sup.- (1) wherein R.sup.1 and R.sup.2 are each an alkyl group having 1 to 6 carbon atoms or a phenyl group which may have a substituent; R is an alkyl group having 1 to 6 carbon atoms, which may have a substituent, an alicyclic alkyl group having 3 to 10 carbon atoms, a phenyl group which may have a substituent, or a benzyl group which may have a substituent; and X is a halogen atom, a benzenesulfonate radical or hydroxynaphthalenesulfonate radical. The above organic silicone quaternary ammonium salt is produced by quaternizing a silane compound by use of a quaternization agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.