Method for preparing cationic water-based pigment colour paste

A water-based pigment paste, cationic technology, applied in the direction of pigment paste, dyeing method, dyeing polymer organic compound treatment, etc., to achieve the effect of small particle size, high dispersion stability and stable product quality

Inactive Publication Date: 2007-03-28
SUNVIM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the present invention, a polymer containing active groups is used to modify the surface of the pigment, and then cationic graft modification is carried out on

Method used

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  • Method for preparing cationic water-based pigment colour paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 2 grams of polystyrene-maleic anhydride copolymer (GPC measures its number average molecular weight to 19000) and 100 grams of acetone in a three-necked flask, stir with a stirrer for 15 minutes, after the copolymer is completely dissolved, add 10 grams of azo Pigment C.I. Pigment Yellow 14 was dispersed and ground on a bead mill for 2 hours. The dispersed suspension is spray-dried by a spray dryer, and with the evaporation of the solvent, the copolymer is gradually coated on the surface of the pigment to obtain a pigment powder.

[0021] Take 10 grams of the above-mentioned pigment powder, disperse it in 50 grams of methanol-water mixed solution, add 10 grams of glycidyltrimethylammonium chloride, stir and react at 60°C for 5 hours, and distill methanol to obtain cationic water-based pigment. Add 5 grams of cationic water-based pigments to 95 grams of water, and disperse them ultrasonically for 10 minutes to obtain cationic C.I. Pigment Yellow 14 Pigment Dispersio...

Embodiment 2

[0023] Add 50 gram phthalocyanine pigments C.I. pigment blue 15: 2 and 250 gram water in there-necked flask, add the aqueous solution of 30% polyacrylic acid-methyl methacrylate copolymer (GPC measures its number average molecular weight 12000) under stirring 10 grams, it was dispersed on the high-speed emulsifier for 30 minutes, and then 10 grams of 30% polyvinylpyrrolidone aqueous solution was added, and the dispersion was continued for 2 hours. Then, slowly add 500 grams of acetone under stirring, and continue stirring for 30 minutes. The mixed solution was centrifuged, and the solvent in the upper layer after centrifugation was removed, and the modified pigment was vacuum-dried at 40°C for 24 hours to obtain a pigment powder.

[0024] Take 10 grams of the prepared pigment powder, disperse it in 50 grams of isopropanol, add 2 grams of glycidyltriethylammonium chloride, stir and react at 80°C for 4 hours, distill the isopropanol to obtain the cationic water-based paint. Ad...

Embodiment 3

[0026] Add 927.5 grams of tetrahydrofuran and 22.5 grams of polyvinyl alcohol (GPC measures its number average molecular weight 8000) in the three-necked flask, stir on the stirrer for 30 minutes, after the polymer is completely dissolved, add 50 grams of quinazetinone pigment C.I. Pigment Red 122 was dispersed on a micro jet pulverizer for 2 hours. Under the condition of full stirring, slowly add the mixture of 500 g of cyclohexane and petroleum ether, so that the polymer is deposited on the surface of the pigment. The mixture was separated by filtration, the solvent was removed, and it was freeze-dried at -15°C for 24 hours to obtain a pigment powder.

[0027] Take 10 grams of the prepared pigment powder, disperse it in 50 grams of ethanol, add 5 grams of 3-chloro-2-hydroxypropyltrimethylammonium chloride, stir and react at 80°C for 3 hours, and distill the ethanol to obtain Cationic water-based pigments. Add 5 grams of cationic water-based pigments to 95 grams of water, a...

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Abstract

The invention relates to cationoid aquosity dye color paste preparing method. It includes the following steps: using polymer with active group to modify dye surface, then cationic grafting. It can be used to prepare various cationoid aquosity dye color pastes. And the produced cationoid aquosity dye color paste has the advantages of good dispersion stability, quality stability, wide application prospect in ink jet printing, advertising, textile dyeing, and stain for wood fields etc.

Description

technical field [0001] The invention discloses a preparation method of cationic water-based pigment paste, which belongs to the technical fields of fine chemical industry and textile printing and dyeing. Background technique [0002] Pigments and dyes are the main coloring substances in nature. Compared with dyes, pigments have higher light fastness, weather fastness and solvent resistance. Spraying and other fields have been widely used. Water-based pigments have become a new trend in the development of pigments because they do not contain organic solvents and are environmentally friendly. [0003] However, due to the low polarity of the surface of the pigment, it is not easy to disperse in water, so when preparing a stable pigment dispersion system, it is usually necessary to modify the surface of the pigment. That is, by depositing or coating single-molecular or multi-molecular substances on the surface of the pigment, such as surfactants, polymers, derivatives of the p...

Claims

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Application Information

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IPC IPC(8): C09D17/00D06P1/54D06P1/00C09C3/10
Inventor 房宽峻付少海田安丽张霞周家达
Owner SUNVIM GROUP
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