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Surface-modified pigment and application thereof

A surface modification, pigment technology, applied in the application of inkjet ink composition, modified color pigment field, to achieve excellent stability, good optical density effect

Pending Publication Date: 2022-06-17
SHENYANG RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods provide organic-group-attached modified pigments with greatly improved particle size a

Method used

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  • Surface-modified pigment and application thereof
  • Surface-modified pigment and application thereof
  • Surface-modified pigment and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038]实施例1用2-(4-氨基苯基)-6-甲基苯并噻唑7-磺酸处理颜料蓝15:4

[0039]1)2-(4-氨基苯基)-6-甲基苯并噻唑7-磺酸(化合物1)重氮化

[0040]

[0041]将58g的2-(4-氨基苯基)-6-甲基苯并噻唑7-磺酸、150ml的水和40ml的15％NaOH溶液依次加入500ml三口瓶中，搅拌溶解，然后加入22ml30％的盐酸，冰水浴降温至0～5℃，缓慢滴入90ml的140g / L亚硝酸钠溶液，保温5℃反应1h，期间用淀粉-KI试纸检测，使反应液保持亚硝酸微过量，制得化合物1重氮盐，备用。

[0042]2)制备表面改性的有机颜料

[0043]将70g的颜料蓝15:4、700ml的水加入到2L的三口瓶中，开动搅拌，加热升温至50℃，预分散2h，缓慢加入上述1)制备的重氮盐溶液，通过使用H-酸斑点检测反应混合物样品中重氮盐的存在，将反应液和H酸滴在滤纸上，交叉处不显红色，则反应至终点，然后将反应物用15％的氢氧化钠调至中性。用反应物5倍体积的蒸馏水渗滤直至色浆的电导率低于1500μm / cm，以此获得纯化色浆分散体，并将色浆分散体的含固量浓缩至10％，然后砂磨10h，获得表面改性酞菁蓝的稳定水性色浆分散体，此外作为比较，按照实例1的相同操作步骤，用对氨基苯磺酸替代2-(4-氨基苯基)-6-甲基苯并噻唑7-磺酸(化合物1)，对颜料蓝15:4进行表面改性。结果如下：

[0044]

[0045]结果显示，用化合物1重氮盐改性颜料蓝15:4的色浆在平均粒径、粘度及表面张力等方面于用对氨基苯磺酸改性颜料蓝15:4的色浆相当。

Example Embodiment

[0046]实施例2用2-(4-氨基苯基)-6-甲基苯并噻唑7-磺酸重氮盐处理颜料黄74

[0047]将47g的颜料黄74、600ml的水加入到2L的三口瓶中，开动搅拌，加热升温至56℃，预分散3h，缓慢加入实施例步骤1)制备的重氮盐溶液，通过使用H-酸斑点检测反应混合物样品中无重氮盐的存在后，后将反应物用15％的氢氧化钠调至中性。用反应物5倍体积的蒸馏水渗滤直至色浆的电导率低于1500μm / cm，以此获得纯化色浆分散体，并将色浆分散体的含固量浓缩至10％。然后砂磨10h，获得表面改性的颜料黄74的稳定水性色浆分散体。

Example Embodiment

[0048]实施例3用2-(4-氨基苯基)-6-甲基苯并噻唑7-磺酸重氮盐颜料红122进行表面处理。

[0049]将41g的颜料红122、800ml的水加入到2L的三口瓶中，开动搅拌，加热升温至45℃，预分散4h，缓慢加入实施例步骤1)制备的重氮盐溶液，通过使用H-酸斑点检测反应混合物样品中无重氮盐的存在后，将反应物用15％的氢氧化钠调至中性。用反应物5倍体积的蒸馏水渗滤直至色浆的电导率低于1500μm / cm，以此获得纯化色浆分散体，并将色浆分散体的含固量浓缩至10％。然后砂磨18h，获得表面改性的颜料红122的稳定水性色浆分散体。测得结果见下表：

[0050]

[0051]结果显示，用化合物1重氮盐处理颜料黄74和颜料红122的表面，能有效的对其颜料进行改性，从而获得具有小平均粒径、低粘度和高表面张力的改性颜料分散体。

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Abstract

The invention belongs to the technical field of fine chemical synthesis, and particularly relates to a modified coloring pigment containing benzothiazole organic groups and application of the pigment in an ink-jet ink composition. The surface of the surface modified pigment contains at least one organic group and at least one ionizable group. The modified pigments may be used in inkjet printers, coatings, paints, toners, color filters, or electrophoretic displays. The ink-jet ink provided by the invention has excellent stability in a wide temperature range for a long time, has required viscosity and surface tension, and has good optical density, printing definition, friction resistance and water resistance during printing.

Description

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Claims

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Application Information

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IPC IPC(8): C09B67/00C09D7/41C09D11/322
CPCC09B68/423C09B68/4673C09B68/20C09B68/4253C09D11/322C09D7/41
Inventor 尚庆梅李学敏白雪松宋志承杜晓文
Owner SHENYANG RES INST OF CHEM IND
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