| 发明名称 | Reversibly thermochromic aqueous ink composition, and writing instrument and writing instrument set each utilizing same | ||
| 摘要 | The present invention relates to a reversibly thermochromic aqueous ink composition comprising: water; a water-soluble organic solvent; a reversibly thermochromic microcapsule pigment which contains a reversibly thermochromic composition comprising: (A) an electron donating coloring organic compound, (B) an electron accepting compound, and (C) a reaction medium which determines temperature at which color reactions between the components (A) and (B) occur; a comb type polymer dispersant having carboxyl groups on its side chains, an organic nitrogen sulfur compound, and a water-soluble resin, a writing instrument using the ink composition, and a writing instrument set comprising the writing instrument and a frictional body. | ||
| 申请公布号 | US8845799(B2) | 申请公布日期 | 2014.09.30 |
| 申请号 | US201013390550 | 申请日期 | 2010.08.16 |
| 申请人 | The Pilot Ink Co., Ltd. | 发明人 | Fujita Katsuyuki |
| 分类号 | C09D11/16;C09D11/00;B43K8/04;B43L19/00;B43K8/02;B43K23/12;C09B67/10;C09B67/46;B43K25/02;C09D5/26;C09B67/02;B43K8/03;C09D7/12;C09D11/17;B43K29/02;B41M5/30 | 主分类号 | C09D11/16 |
| 代理机构 | Greenblum & Bernstein, P.L.C. | 代理人 | Greenblum & Bernstein, P.L.C. |
| 主权项 | 1. A reversibly thermochromic aqueous ink composition comprising: water, a water-soluble organic solvent, a reversibly thermochromic microcapsule pigment which contains a reversibly thermochromic composition comprising: (A) an electron donating coloring organic compound,(B) an electron accepting compound, and(C) a reaction medium which determines temperature at which color reactions between the components (A) and (B) occur, a comb type polymer dispersant having carboxyl groups on its side chains, an organic nitrogen sulfur compound, and a water-soluble resin. | ||
| 地址 | Aichi JP | ||