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Method for preparing polyocarboxy acid type pigment ink

A pigment ink, polycarboxylic acid technology, applied in ink, household appliances, applications, etc., can solve the problem of reduced dispersibility of the ink system, and achieve the effects of easy operation, high stability, good heat resistance and stability

Inactive Publication Date: 2006-06-21
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small particle size of the pigment, it is easy to pass through the nozzle, which improves the transparency of the pigment and makes the pigment more prone to aggregation and precipitation, resulting in a decrease in the dispersibility of the ink system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) The preparation of polycarboxylate polymer dispersant, in the four-necked flask that thermometer, stirring device, constant pressure dropping funnel and condenser tube are housed, add certain solvent, add monomer ethyl acrylate in constant pressure funnel , methyl vinyl ether, butadiene, initiator benzoyl peroxide, and solvent polyethylene glycol 600. After heating up to the reaction temperature under the protection of nitrogen, the reactants are added dropwise. Precipitate and filter to remove unreacted monomers, and then dry to obtain a white powdery copolymer, which is a polycarboxylic acid polymer dispersant. (2) Preparation of water-based pigment magenta ink, 4% polycarboxylate polymer dispersant is hydrolyzed, then successively add 10% C.I. pigment red 122, 15% diethylene glycol, 25% ethylene glycol glycol and 46% deionized water. Stir with a mixer (600 rpm) for 20 minutes, stir with an emulsifier at high speed (10,000 rpm) for 40 minutes, grind with a sand m...

Embodiment 2

[0018] (1) With embodiment 1 (1) step. (2) The preparation of water-based pigment yellow ink, 5% polycarboxylate polymer dispersant is hydrolyzed, then successively add 15% C.I. pigment yellow 48, 10% N-methyl-2-pyrrolidone, 5% 1,3-Propanediol, 20% diethylene glycol 600 and 45% deionized water were stirred with a mixer (600 rpm) for 20 minutes respectively, emulsifier at high speed (10000 rpm) for 40 minutes, and a sand mill Pulverize for 30-90 minutes, and finally adjust the pH value to obtain the water-based pigment yellow ink.

Embodiment 3

[0020] (1) With embodiment 1 (1) step. (2) The preparation of water-based pigment cyan ink, the polycarboxylate polymer dispersant of 3% is hydrolyzed, then adds the isopropanol of 12% C.I. Ethylene glycol, 20% N-methyl-2-pyrrolidone and 40% deionized water were stirred with a stirrer (600 rpm) for 20 minutes respectively, and the emulsifier was stirred at a high speed (10000 rpm) for 40 minutes. Grinding in a mill for 30-90 minutes, and finally adjusting the pH value to obtain the water-based pigment cyan ink.

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PUM

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Abstract

The invention relates the method for preparation of polycarboxylic acids type color ink, comprising the following steps: using the benzoyl peroxide or azo-diisobutyronitrile as initiating agent, preparing the polycarboxylic acids type macromolecular dispersing agent with acroleic acid, methyl acrylate and methyl methacrylate; hydrolyzing the polycarboxylic acids type macromolecular dispersing agent, sequential adding the ultra-fine color, polyatomic alcohol, dissolvent and water, stirring, emulsifying, disintegrating, adjusting pH, and getting the polycarboxylic acids type color ink. The polycarboxylic acids type color ink is used for the fields of computer ink-jet printer and textile ink-jet printing. The ink possesses the advantages of dispersion stability, good water resistance and light resistance and storage stabilization.

Description

Technical field: [0001] The invention relates to a preparation method of polycarboxylic acid pigment ink, which belongs to the technical fields of computer inkjet printing, inkjet painting and textile inkjet printing. technical background: [0002] Inkjet printers have rapidly gained popularity in business and home applications due to their low price and consistent performance. Ink for inkjet printing is required not only to not clog the nozzle, but also to have good dispersion stability, excellent light fastness and water resistance. [0003] At present, the inks used are mainly dye inks. The stability of dye inks is poor. When the storage temperature and other conditions change, it is easy to crystallize and precipitate, causing the nozzles and pipelines to be blocked. Moreover, the dyes have good water solubility, which leads to spraying. When the image printed by the ink is exposed to water, the dye dissolves, which affects the printing effect and cannot be waterproof. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/326
Inventor 房宽峻蔡玉青
Owner QINGDAO UNIV
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