Process for preparing silicone microparticles cured by a Michael

Details Process for preparing silicone microparticles cured by a Michael Process for preparing silicone microparticles cured by a Michael

1988-05-19

1989-10-24

Lovering, Richard D.

Plastic and nonmetallic article shaping or treating: processes

Encapsulating normally liquid material

Liquid encapsulation utilizing an emulsion or dispersion to...

71 6411, 71DIG1, 2523895, 264 43, 424462, 424497, 42721333, 42721334, 512 4, 514963, 528 32, 528 33, A61K 958, B01J 1302, C08G 7726

Patent

active

048760390

ABSTRACT:
Microparticles, such as microspheres and microcapsules, comprising a solid organopolysiloxane are prepared by curing a dispersion of discrete entities by means of a Michael-type addition reaction. The discrete entities are dispersed in a fluid continuous phase and are sphere-like particles of a curable liquid organopolysiloxane composition, or such a liquid organopolysiloxane composition containing a material to be encapsulated. The microparticles may be elastomeric or resinous and are useful as filler particles and time-release capsules.

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