公开(公告)号：US5017224A

公开(公告)日：1991-05-21

申请号：US541763

申请日：1990-06-21

申请人： Hajime Tomita ,  Yasuo Sonoda

发明人： Hajime Tomita ,  Yasuo Sonoda

IPC分类号： C09D11/02 ,  C09D11/033 ,  C09D11/10 ,  C09D11/102 ,  C09D11/16 ,  C09D11/17

CPC分类号： C09D11/16

摘要： An aqueous ink composition is disclosed having high water resistance and excellent age stability and resistance to drying-up. A feature of the present invention resides in a water resistant ink composition comprising an aqueous vehicle which contains a polyamine containing primary amino groups in the proportion of 3-20% of amino groups contained in a molecule, one, two or more stabilizing agent selected from urea, thiourea, ethylene urea, hydroxyethyl urea, hydroxypropyl urea, ethylene, thiourea, diethyl thiourea, 2-pyrrolidone, polyvinyl pyrrolidone, sorbitol, dimethylsulfone and mixtures thereof and water and an anionic dye having a solubility of 10% by weight or more in said aqueous vehicle.

公开(公告)号：US5019164A

公开(公告)日：1991-05-28

申请号：US520189

申请日：1990-05-09

申请人： Hajime Tomita ,  Yasuo Sonoda

发明人： Hajime Tomita ,  Yasuo Sonoda

IPC分类号： C09D11/02 ,  C09D11/033 ,  C09D11/10 ,  C09D11/102 ,  C09D11/16 ,  C09D11/17

CPC分类号： C09D11/16

摘要： A water resistant ink composition is disclosed having a greatly improved water resistance and being excellent in resistance to drying-up, age stability and smooth ink flowability containing a mixture of polyamine compound having only primary amino groups and a molecular weight of 300 or more and a polyamine having primary amino groups removed therefrom, that is, having only secondary and/or tertiary amino groups and a molecular weight of 300 or more and combined with an anionic dye and a stabilizing agent such as urea or the like.