Aqueous resin dispersion liquid for heat-sensitive recording material and heat-sensitive recording material using the same
申请人:NIPPON SHOKUBAI CO., LTD.
公开号:EP0614767A1
公开(公告)日:1994-09-14
An aqueous resin dispersion for a heat-sensitive recording material is disclosed. The aqueous resin dispersion is obtained by the use of polyvinyl alcohol as an emulsifier and the use of two steps of polymerization. In the first step of polymerization, a polymeric monomer composition A is polymerized, composition A containing polymeric multi-functional monomers which constitute 15% by weight or more of the total weight of the polymeric monomers used for the first step. And, in the second step, a polymeric monomer composition B is polymerized, The invention also discloses a heat-sensitive recording material using such an aqueous resin dispersion as a color-developing layer or a protective coating.
本发明公开了一种用于热敏记录材料的水性树脂分散体。这种水性树脂分散液是通过使用聚乙烯醇作为乳化剂和两个聚合步骤获得的。在第一步聚合中,聚合单体组合物 A,组合物 A 中含有聚合多功能单体,其重量占第一步所用聚合单体总重量的 15%或以上。本发明还公开了一种热敏记录材料,使用这种水性树脂分散体作为显色层或保护层。