发明名称 METHOD OF IMPROVING MICRO-CAPSULIZATION BY INTERFACIAL POLYADDITION
摘要 Microcapsules, and especially suspensions of microencapsulated colorants well adapted for the manufacture of carbonless papers, are produced by emulsifying a hydrophobic organic fluid which includes an aliphatic diisocyanate and an isocyanurate ring trimer of an aliphatic diisocyanate, and optionally a dissolved organic material, in an essentially aqueous liquid containing a protective colloid, a surfactant, or both, wherein the weight ratio of aliphatic diisocyanate/trimer ranges from 0.05/l to 0.70/l and the surface tension between the aqueous phase and the hydrophobic organic phase ranges from 0 to 20 mN/m, and then forming microcapsules by interfacially reacting a polyamine with the emulsion which results, thereby constituting polyurea walls of said microcapsules by polyaddition.
申请公布号 JPS63200830(A) 申请公布日期 1988.08.19
申请号 JP19880022954 申请日期 1988.02.04
申请人 RHONE POULENC CHIM 发明人 JIRUBEERU BIBAN
分类号 B01J13/16;B41M5/165;C08G18/08;C08G18/32;C08G18/72 主分类号 B01J13/16
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