Method of preparing microcapsule
US5296266A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1991 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Feb 19, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09392
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for producing microcapsules in which various coats can be applied to various cores at any desired but uniformly controllable thickness comprises the steps of: PA1 (a) providing microcapsule cores, PA1 (b) depositing resin particles uniformly onto the surfaces of the microcapsule cores to form resin particle-deposited-onto-cores, PA1 (c) putting the resin particle-deposited-onto-cores in a monodisperse state, PA1 (d) bringing the resin particle-deposited-onto-cores in the monodisperse state into contact with a solvent in which the resin of the resin particles can dissolve, and PA1 (e) drying the resin particle-deposited-onto-cores which has been brought into contact with the solvent, while kept in the monodisperse state and, then, recovering the dried cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.