MICROCAPSULE AND ENVIRONMENTALLY COMPATIBLE NO-CARBON PRESSURE SENSITIVE COPY SHEET USING THE MICROCAPSULE

摘要

PROBLEM TO BE SOLVED: To provide a microcapsule having small aggregate when the microcapsule is manufactured and excellent membrane denseness and to provide a no- carbon pressure sensitive copy sheet having high safety in an environmental field. SOLUTION: An interfacial polymerization method microcapsule is obtained by emulsion dispersing a hydrophobic liquid containing an electron donative color developing agent, an aliphatic ester solvent and an aliphatic polyvalent isocyanate in a water solution of an isobutylene-maleic anhydride copolymer having 0.3 to 0.5 of neutrality. Further, it is preferable to regulate the neutrality to 0.3 to 0.5 after previously dissolving in 0.05 to 0.2 of the neutrality. The environmental suitability type no carbon pressure sensitive copy sheet is manufactured by providing a coating layer containing the microcapsule on a surface of a support.