Method for preparing microcapsules having improved pre-walls, and microcapsules and photosensitive materials produced thereby
US5120475A · kind A · utility
11Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1990 |
| Grant date | Jun 9, 1992 |
| Priority date | — |
| Expiry date | Apr 19, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249997
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for preparing microcapsules which comprises: PA0 dispersing a hydrophobic oily liquid containing a pre-wall former in a continuous aqueous phase, the aqueous phase containing a chain extender which comprises a water soluble polyfunctional compound capable of reacting with the pre-wall former upon dispersion of the hydrophobic oily liquid in the continuous aqueous phase; and PA0 forming capsule walls around the droplets of the hydrophobic oily liquid in the continuous aqueous phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.