| 发明名称 |
INK, INK CARTRIDGE, AND INK JET RECORDING METHOD |
| 摘要 |
An aqueous ink for ink jet contains a urethane resin. The urethane resin has a unit derived from a polyether polyol and a unit containing an acidic group. The acid value of the urethane resin is 40 to 140 mg KOH/g. The molar ratio of urethane bonds/urea bonds is 80.0/20.0 or more. Some of the acidic groups in the urethane resin are neutralized with particular neutralizing agents. |
| 申请公布号 |
US2015159031(A1) |
申请公布日期 |
2015.06.11 |
| 申请号 |
US201414559825 |
申请日期 |
2014.12.03 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
Okamura Daiji;Yamasaki Kousuke;Shiiba Kenichi |
| 分类号 |
C09D11/102;C09D11/30 |
主分类号 |
C09D11/102 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An aqueous ink for ink jet, comprising a urethane resin;
wherein the urethane resin has a unit derived from a polyether polyol and a unit containing an acidic group, an acid value of the urethane resin is 40 mg KOH/g or more and 140 mg KOH/g or less, a molar ratio of a proportion in % by mole of a urethane bond in the urethane resin to a proportion in % by mole of a urea bond is 80.0/20.0 or more, and the acidic groups in the urethane resin are neutralized with an alkali metal ion and at least one ammonium type ion selected from ammonium ion and an organic ammonium ion, with a neutralization ratio of all acidic groups in the urethane resin being 80% or more and a neutralization ratio with the ammonium type ion being 1% or more and less than 45%. |
| 地址 |
Tokyo JP |
