| 摘要 |
PURPOSE:To obtain a carbonless coloring copying sheet improved in its aptitude to starching division, by making the sheet contain a specified rate of a surfactant. CONSTITUTION:A nonionic surfactant (e.g. polyoxyethylene nonylphenol ether) having a hydrophilic-lipophilic ballance (HLB) of about 10 or more and a molecular weight of about 200 or more is used. That is, a microcapsule (preferably comprising melamine.formalin resin), a capsule protective agent, an adhesive and 0.1- 4wt% of the surfactant by weight of the microcapsule are applied onto a substrate sheet, to obtain a carbonless coloring copying sheet. |
