Method for the production of resin particles
US8148357B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2005 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Nov 22, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2377/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Resin particles are produced by adding a liquid material having a boiling point of 100° C. or higher to an aqueous dispersion of resin particles to yield a mixture, recovering a wet cake from the mixture by filtration, and drying the wet cake. A water-soluble material is preferably used as the liquid material. The liquid material may also be at least one compound selected from compounds listed in The Japanese Standards of Cosmetic Ingredients, The Japanese Cosmetic Ingredients Codex, The Pharmacopoeia of Japan, and The Japan's Specifications and Standards for Food Additives. According to this method, there are provided resin particles which are resistant to coagulation upon drying and are satisfactorily dispersible in other materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.