Process for the production of oily liquid-containing microcapsules and the microcapsules produced thereby

Abstract

Abstract A PROCESS FOR THE PRODUCTION OF OILY LIQUID-CONTAINING MICROCAPSULES WHICH COMPRISES MIXING A POLYVALENT POLYISOCYANATE AS A FIRST WALL-FORMING MATERIAL AND A SECOND WALL-FORMING MATERIAL CAPABLE OF PRODUCING A HIGH MOLECULAR WEIGHT COMPOUND BY REACTION WITH SAID POLYISOCYANATE, IN SAID OILY LIQUID, TO FORM A MIXTURE, DISPERSING OR EMULSIFYING SAID MIXTURE IN A POLAR LIQUID FORMING A CONTINUOUS PHASE, AND REACTING SAID POLYVALENT ISOCYANATE WITH SAID SECOND WALL-FORMING MATERIAL TO THEREBY FORM THE MICROCAPSULE WALL FROM THE INSIDE OF THE OIL DROP IS DISCLOSED. THE SECOND WALL-FORMING MATERIAL IS SELECTED FROM THE GROUP CONSISTING OF EPOXY COMPOUNDS, ACID ANHYDRIDE COMPOUNDS, COMPOUNDS HAVING AT LEAST TWO GROUPS SELECTED FROM THE CLASS CONSISTING OF HYDROXYL GROUP, A THIOL GROUP, AN AMINO GROUP, AND A CARBOXYLIC ACID GROUP, AND PREPOLYMERS OF SAID COMPOUNDS.

Inventors

• 👤 M Kiritani
• 👤 H Matsukawa

Bibliographic Details