Micro-capsules and method of preparing same

Details Micro-capsules and method of preparing same Micro-capsules and method of preparing same

1983-09-16

1986-05-13

Miller, Edward A.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

264 47, 427 541, B01J 1302

Patent

active

045886393

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.

REFERENCES:
patent: 3704264 (1972-11-01), Gorman
patent: 3779941 (1973-12-01), Powell
patent: 4001140 (1977-01-01), Foris et al.
patent: 4110511 (1978-08-01), Lee et al.
patent: 4112138 (1978-09-01), Davis et al.
patent: 4228216 (1980-10-01), Austin et al.
patent: 4370160 (1983-01-01), Ziemelis
patent: 4394287 (1983-07-01), Scarpelli

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