Anti-bacterial type ink jet aqueous carbon black ink

A black ink, ink-based technology, applied in ink, household utensils, applications, etc., can solve the problems of reducing water treatment fastness, sensitivity, and increasing the tendency of pigment migration, etc., to achieve excellent hue, high light fastness, good long-term The effect of stability

Inactive Publication Date: 2013-02-20
SHANGHAI SERUDAN DYESTUFF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these dispersions are sensitive to water-soluble solvents that can also be combined with pigments, which will increase the tendency of pigment migration and reduce water treatment fastness, and there are certain defects.

Method used

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  • Anti-bacterial type ink jet aqueous carbon black ink
  • Anti-bacterial type ink jet aqueous carbon black ink

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] Preparation of Acid Black 2:

[0036] 1) The reaction product of nitrobenzene and aniline

[0037] React 1.2mol nitrobenzene, 1.7mol aniline and 0.2mol ferrous chloride at about 185°C for 15 hours. Nigrosine was dissolved in excess aniline, then poured into dilute aqueous sodium hydroxide solution and stirred. The aqueous phase contains large amounts of iron salts; nigrosine is distilled from the organic phase and dried. The recovered solid phase is hereinafter referred to as solvent black 7 for short.

[0038] 2) Sulfonation reaction

[0039]Add 1600ml 98% sulfuric acid to a 5000ml stirred vessel. 1kg of solvent black 7 was slowly added little by little while stirring was turned on. The temperature was maintained at 90°C until complete dissolution. Add 19 liters of deionized water to the dilution vessel, and add the reaction mixture when the temperature is 70-80°C. The product (crude nigrosine) was isolated by filtration. 2.6kg of water and 180ml of 50% sodium ...

Embodiment 1

[0048] Get 260g of acid black 2 solution prepared by the above method, 1.2g deionized water, 30g ethanolamine, 30g photocatalyst powder and pour it into 1200g deionized water, and have a stirrer to fully mix and stir. During the stirring process, 500g Degus Sai S4 carbon black is slowly poured into the mixer, and after the mixing is completed, a semi-finished carbon black ink is obtained.

[0049] Pour the semi-finished carbon black ink into a grinder and grind for 1.5 hours, then filter the semi-finished carbon black ink through a 3-micron hydrophobic microporous filter membrane to obtain the required stock solution of carbon black ink.

[0050] When in use, dilute the stock solution of carbon black ink to an ink with a dye content of 6%, and then put it into an inkjet printer for printing.

Embodiment 2

[0052] Take 400g of Acid Black 2, 30g of aminoethanol, and 32g of photocatalyst powder prepared by the above-mentioned method and pour them into 2600g of deionized water, and mix and stir in a blender. During the stirring process, slowly add 750g of Degussa FW2 carbon black to make carbon Black ink semi-finished products.

[0053] Pour the semi-finished carbon black ink into the grinder and grind for 2 hours, then filter the semi-finished carbon black ink through a 3-micron melt-blown filter to obtain the required stock solution of carbon black ink.

[0054] When in use, the carbon black ink stock solution is diluted to an ink with a dye content of 6%, which can be put into an inkjet printer for printing, and the printed matter obtained by printing has an optical density of 1.4-1.5.

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Abstract

The present invention relates to the technical field of ink jet, particularly to a carbon black ink. The anti-bacterial type ink jet aqueous carbon black ink comprises a dye and a solution, wherein the dye comprises the following components, by weight, 5-60% of at least one carbon black pigment component a, 5-45% of at least one neutral sulfate component b, and 1-20% of photocatalyst powder. With the technical scheme, the anti-bacterial type ink jet aqueous carbon black ink has characteristics of good long term stability and easy storage, and the printing matters printed through ink jet printing by using the anti-bacterial type ink jet aqueous carbon black ink have characteristics of excellent hue, high light fastness, excellent bacterial resistance and excellent corrosion resistance.

Description

technical field [0001] The invention relates to the field of inkjet technology, in particular to a carbon black ink. Background technique [0002] Inkjet printing is a kind of printing without contact, pressure and plate. When printing, ink droplets are ejected from small nozzles to a medium (paper, textiles, plastic products, metal products), and electronically controlled to gather ink droplets into characters or graphics. In inkjet printing, fine ink droplets are jetted in continuous inkjet and drop-on-demand through different arrangements. During the inkjet process, the quality of the ink directly affects the final quality of the printed matter. [0003] Carbon black, as a black coating, has significantly higher ozone and light fastnesses than dye blends. However, excellent pigment particle dispersion is a must for durability and storage stability. In order to better preserve the ink and prevent flocculation, some water-soluble solvents with good compatibility in the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02C09D11/328
Inventor 刁正平施卫斌郑文军
Owner SHANGHAI SERUDAN DYESTUFF CHEM
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