NOVEL PRODUCTION OF MICROCAPSULE BY IN-SITU POLYMERIZATION METHOD AND MICROCAPSULE PRODUCED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To improve the yield of capsules and to easily control the structure of capsules such as thickness of the capsule wall by suppressing gelation inside or outside of capsules due to excessive polymn. of radical polymerizable monomers as the wall material. SOLUTION: By this method, microcapsules containing a dispersion material inside are produced by adding radical polymerizable monomers to the dispersion system of the inner material of capsules and effecting radical polymn. of the monomers. In this method, a redox initiator system by the combination of water- insoluble oxidant/water-soluble reducing agent or a water-soluble oxidant/water- insoluble reducing agent is used to initiate the polymn. reaction to produce microcapsules.