PRODUCTION OF DISPERSION OF MICROCAPSULE HOUSING VOLATILE MATTER AND PRODUCTION OF MICROCAPSULE HOUSING VOLATILE MATTER

摘要

PURPOSE: To produce a dispersion of microcapsules excellent in property of slowly releasing a housed volatile matter and capable of releasing the volatile matter over a long period of time. CONSTITUTION: An oily liq. contg. a volatile matter, a multifunctional isocyanate, a water-insoluble polyol and an organotin compd. is added to an aq. liq. contg. a polyamine having at least two amino groups and an emulsifier, and the oily liq. is emulsified, dispersed and brought into a resinification reaction to obtain the objective dispersion of microcapsules each consisting of a gelatinous polyurethane resin core 1 contg. the volatile matter and a polyurea resin shell 2 formed on the periphery of the core 1.