Solvent-free phase inversion process for producing resin emulsions
US7989135B2 · kind B2 · utility
7Cited by
31References
20Claims
0Family size
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Key dates
| Filing date | Feb 15, 2008 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | May 24, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for making a resin emulsion suitable for use in forming toner particles includes melt mixing a resin possessing acid groups at a temperature higher than the glass transition temperature of the resin, optionally adding a surfactant before, prior to, during, or after melt mixing the resin, and adding a basic neutralization agent and water to the resin to form an emulsion. In embodiments, the resin emulsion thus produced may be utilized to form a toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.