Method of making impermeable microcapsules
US4228031A · kind A · utility
5Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1978 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | May 4, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2987
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The method of making impermeable microcapsules comprises the steps of preparing an aqueous dispersion of microcapsules having a capsule wall of a water-insoluble polyamine-epoxy resin and adding to the aqueous dispersion an electrolyte to dehydrate the microcapsules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.