Plastic and nonmetallic article shaping or treating: processes – Encapsulating normally liquid material – Liquid encapsulation utilizing an emulsion or dispersion to...
Patent
1991-04-09
1994-03-08
Lovering, Richard D.
Plastic and nonmetallic article shaping or treating: processes
Encapsulating normally liquid material
Liquid encapsulation utilizing an emulsion or dispersion to...
252194, 252600, 264 46, 430138, 503215, 522902, B01J 1316, G03C 172
Patent
active
052924580
ABSTRACT:
A method of producing a photosensitive microcapsule which contains a polymerizable monomer and a polymerization initiator. Soluble water is displaced in the polymerizable monomer by performing one or both of distilling the polymerizable monomer and adding a dehydrating agent to the polymerizable monomer. The polymerization initiator and a first microcapsule-forming material are added to the water-displaced polymerizable monomer to produce a solution. Soluble oxygen in the polymerizable monomer is displaced by performing one or both of bubbling an inert gas and adding an oxygen absorbent to the polymerizable monomer. Soluble oxygen may also be displaced in an ionic surfactant by performing the bubbling and adding of oxygen absorbent. The ionic absorbent is added to the solution containing the polymerizable monomer and polymerization initiator, and then the solution is emulsified. A microcapsule membrane is produced by adding a second microcapsule-forming material to the emulsion.
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Iwasaki Fumiharu
Sakuhara Toshihiko
Takahashi Hiroshi
Adams Bruce I.
Lovering Richard D.
Seiko Instruments Inc.
Wilks Van C.
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