POLYHYDROXYALKANOATES HAVING IN ITS SIDE CHAIN PHENYLSULFINYL STRUCTURE AND/OR PHENYL SULFONYL STRUCTURE AND PRODUCTION PROCESS THEREFOR; CHARGE CONTROL AGENT, TONER BINDER AND TONER CONTAINING SAME; AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS USING THE TONER
US6808854B2 · kind B2 · utility
19Cited by
12References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Sep 4, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09775
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a novel polyhydroxyalkanoate (PHA) containing a 3-hydroxyalkanoic unit which has at its side chain terminal a substituted phenylsulfinyl group and/or a substituted phenylsulfonyl group, and a production process thereof. The novel PHA can be produced by oxidizing with a peroxide a biosynthetic PHA containing a 3-hydroxyalkanoic unit which has at its side chain terminal a substituted phenylsufanyl group. The novel PHA has a superior function as a charge control agent, besides is biodegradable, hence is contributable to environmental conservation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.