POLYHYDROXYALKANOATE, PRODUCING METHOD THEREFOR, CHARGE CONTROL AGENT CONTAINING SUCH POLYHYDROXYALKANOATE, TONER CONTAINING SUCH CONTROL AGENT AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS UTILIZING SUCH TONER
US6855472B2 · kind B2 · utility
15Cited by
13References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Jan 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08755
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention is to provide polyhydroxyalkanoate of a novel structure enabling application to wider fields, and a producing method therefor. The invention also provides a biodegradable charge control agent having excellent charging characteristics, excellent dispersibility in the toner resin and improved spent property. The polyhydroxyalkanoate of the present invention is featured by including, in the polymer molecule, a units represented by the general formulas (1) and (2) and at least one of the units represented by the general formulas (3) to (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.