发明名称 |
Process for producing pigment dispersion composition |
摘要 |
A method for producing a pigment dispersion composition having excellent image density, dispersibility, and storage stability, has high resolubility, and forms an ink film having excellent marker resistance and scratch resistance. The method includes bringing a pigment (I) having a surface acidic group and a basic compound (II) having two or more ammo groups selected from a primary amino group and a secondary amino group in its molecule, into contact with each other in an aqueous medium to prepare a pigment having an unreacted surface amino group, bringing the pigment into contact with a polyisocyanate polyurethane resin (III) having two or more isocyanate end groups so that the pigment and the polyisocyanate polyurethane resin are bonded via a urea bond to prepare a dispersion of a polyurethane resin-bonded pigment (A), and heating the dispersion of the polyurethane resin-bonded pigment (A) at 40 to 100° C. for 1 to 30 days. |
申请公布号 |
US9018317(B2) |
申请公布日期 |
2015.04.28 |
申请号 |
US201213984072 |
申请日期 |
2012.02.07 |
申请人 |
Tokai Carbon Co., Ltd. |
发明人 |
Takenaka Asami;Tanaka Shigehiro;Ishibashi Yukari |
分类号 |
C08G18/83;C08K5/3417;C08K5/3437;C08L75/04;C08G18/04;C09C1/56;C09D17/00;C09D11/324;C08G18/66;C08G18/75;C08G18/08;C08G18/34;C08G18/36;C08G18/38;B82Y30/00 |
主分类号 |
C08G18/83 |
代理机构 |
Westerman, Hattori, Daniels & Adrian, LLP |
代理人 |
Westerman, Hattori, Daniels & Adrian, LLP |
主权项 |
1. A method for producing a pigment dispersion composition comprising bringing a pigment (I) having a surface acidic group and a basic compound (II) having two or more amino groups selected from a primary amino group and a secondary amino group in its molecule, into contact with each other in an aqueous medium to prepare a pigment having an unreacted surface amino group, bringing the pigment into contact with a polyisocyanate polyurethane resin (III) having two or more isocyanate end groups so that the pigment and the polyisocyanate polyurethane resin are bonded via a urea bond to prepare a dispersion of a polyurethane resin-bonded pigment (A), and heating the dispersion of the polyurethane resin-bonded pigment (A) at 40 to 100° C. for 1 to 30 days, wherein
the polyisocyanate polyurethane resin (III) having two or more isocyanate end groups has an acid number of 20 to 200 mg KOH/g on a solid basis. |
地址 |
Tokyo JP |