| 发明名称 |
INK COMPOSITION |
| 摘要 |
The present invention relates to a pigment ink composition that can fulfill excellent print stability, and performances and drying performance of printed matters.;The ink composition comprises: at least a pigment; an organic solvent; and two or more kinds of binder resins having different weight average molecular weights (Mw), wherein, when a binder resin having lowest weight average molecular weight (Mw) is marked as α, and a binder resin having higher weight average molecular weight (Mw) than that of the binder resin α and meeting formula (3) is marked as β among the two or more kinds of binder resins to be used, the ink composition meets formulae (1) and (2): Formula (1): Mwβ−Mwα≧10,000, Formula (2): 1,000<Mwα<30,000, and Formula (3): 20,000<Mwβ<100,000, wherein Mwα represents the weight average molecular weight of the binder resin α, and Mwβ represents the weight average molecular weight of the binder resin β. |
| 申请公布号 |
US2015353749(A1) |
申请公布日期 |
2015.12.10 |
| 申请号 |
US201514832192 |
申请日期 |
2015.08.21 |
| 申请人 |
TOYO INK SC HOLDINGS CO., LTD. |
发明人 |
YODA Atsushi;Aida Seiji;Yamasaki Ken;Fujiwara Daisuke;Yamada Kouhei;Shigemori Kazunori;Umezawa Mitsuo |
| 分类号 |
C09D11/107;C09D11/102;C09D11/30 |
主分类号 |
C09D11/107 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A printing method comprising applying an ink composition onto a polyvinyl chloride resin sheet, the ink composition comprising:
at least a pigment; a solvent; and two or more binder resins having different weight average molecular weights (Mw), wherein, when a binder resin having the lowest weight average molecular weight (Mw) is marked as α, and a binder resin having a higher weight average molecular weight (Mw) than that of the binder resin α and satisfying the formula (3) is marked as β among the two or more binder resins in the ink composition, the ink composition satisfies the following formulas (1) and (2):
Mwβ−Mwα≧10,000 (1),5,000<Mwα<30,000 (2), and20,000<Mwβ<100,000 (3), wherein Mwα represents the weight average molecular weight of the binder resin α, and Mwβ represents the weight average molecular weight of the binder resin β, wherein the solvent consists of at least one organic solvent, wherein the at least one organic solvent comprises at least one organic solvent having a boiling point of 150° C. or more, and wherein the two or more binder resins are selected from the group consisting of an acrylic resin, a styrene-acrylic resin, a vinyl chloride resin, and a vinyl chloride vinyl acetate copolymer resin. |
| 地址 |
Tokyo JP |
