Micro-capsules and method of preparing same
US4588639A · kind A · utility
40Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1983 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Sep 16, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2987
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Micro-capsules are prepared by dispersing a composition comprising a hydrophobic acrylate or methacrylate monomer or oligomer capable of polymerization upon exposure to ultraviolet light, a photosensitizer, and a UV screening agent in water containing a dispersant to form a colloidal dispersion, and exposing the dispersion to UV light to cause the colloidal particles to cure only at their surface. The resulting microcapsules have a core of the uncured acrylate or methacrylate monomer or oligomer encapsulated with a wall layer of the cured acrylate or methacrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.