Method for production of resin particle
US9233065B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2008 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jan 24, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2377/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed is a method for producing resin particles, which can impart a desired function to the surface of resin particles efficiently and simply. Also disclosed are resin particles produced by the method.The method produces resin particles by melting and mixing an acidic-group-containing thermoplastic resin or elastomer with filler particles and a water-soluble material to give a resin composition containing resin fine particles formed by the thermoplastic resin and the filler particles and dispersed in a matrix including the water-soluble material; and removing the matrix component from the resin composition, to give the resin particles. The resulting resin particles each include a core particle including the acidic-group-containing thermoplastic resin or elastomer, and the filler particles immobilized on the outside of the core particle. The acidic group is preferably carboxyl group or carboxylic anhydride group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.