METHOD FOR ENCAPSULATING DISSOLVED COLOR REACTION PARTNERS OF COLOR REACTION SYSTEMS, THE CAPSULES OBTAINED ACCORDING THERETO, AND THEIR USE IN COLOR REACTION PAPERS

摘要

Microencapsulation of color reagents by dissolving the reagent in a solvent, rapidly mixing the solution with a non-solvent to form a supersaturated solution and rapidly mixing this with an aqueous medium to form an emulsion, comprises using a vegetable oil 1-8C alkyl ester as the solvent. An Independent claim is also included for microcapsules for pressure-sensitive color reaction systems, comprising a color reagent in a supersaturated system comprising a vegetable oil 1-8C alkyl ester solvent and a non-solvent.