Method for producing amine-formaldehyde microcapsules and photosensitive microcapsules produced thereby
US5283015A · kind A · utility
9Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1991 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Jan 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2987
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for forming microcapsules having discrete capsule walls comprising the steps of: PA1 forming an emulsion of an oily core material phase in a continuous aqueous phase, said oily core material phase including isocyanatoacrylate or cyanoacrylate prewall reactants which react with said aqueous phase to form a pre-wall material around said oily core material phase; and PA1 enwrapping particles of said oily core material phase in an amine-formaldehyde condensation product produced by in situ condensation of an amine and formaldehyde, and the microcapsules produced thereby are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.