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Aqueous color paste and preparation method thereof

A water-based color paste and color paste technology, applied in the direction of pigment paste, etc., can solve the problems of poor aging resistance and other problems, and achieve the effect of high covering rate, good dispersion stability and moderate viscosity

Inactive Publication Date: 2018-08-28
HAIMEN CITY RUITAI TEXTILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the water-based color paste products are still dominated by organic water-based color pastes. Although organic pigments are better than inorganic water-based color pastes in terms of coloring and hiding, they have disadvantages such as poor aging resistance. Therefore, in To a large extent, the application of organic water-based colorants is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The embodiment of the present invention also provides a preparation method of the water-based color paste, comprising the following steps: 1) adding ground glass beads and water into the reactor, and mixing uniformly; 2) sequentially adding the water-based dispersant into the reactor , water-based defoamer, and water-based acrylic resin, and stir evenly; 3) Add organic pigments and nano-zinc oxide to the system in step 2), and after mixing evenly, filter and remove the grinding glass beads to obtain water-based color paste.

[0030] The present invention is further described below by specific examples. However, these examples are only exemplary and do not constitute any limitation to the protection scope of the present invention.

Embodiment 1

[0033] 1. Preparation of water-based acrylic resin

[0034] 1) Add 125g of methanol, 30g of ethylene glycol butyl ether, and 2g of n-dodecyl mercaptan into the reactor, and mix it with an agitator, and control the temperature of the reactor to 75°C;

[0035] 2) Continuously drop the mixture I into the reactor, the mixture I is 28.9g of methyl methacrylate, 26.3g of butyl acrylate, 17.3g of hydroxyethyl methacrylate, 3.63g of vinyltrioxysilane and 1.5g of azobisisobutyronitrile, the time of dropping is 3 hours; after the drop, add 0.3g of azobisisobutyronitrile, 0.25g of n-dodecyl mercaptan and 10g of methanol, and then keep the temperature for 1h ;

[0036] 3) Then dropwise add the mixture III, the mixture III is 43.4g methyl methacrylate, 6g methacrylic acid, 39.5g butyl acrylate, 26g hydroxyethyl methacrylate, 5.75g vinyltrioxysilane and 2.5g even A homogeneous mixture of azobisisobutyronitrile, the time for dropping is 3.5 hours; after dropping, add 0.6g of azobisisobutyr...

Embodiment 2

[0052] 1. Preparation of water-based acrylic resin

[0053] 1) Add 125g of methanol, 30g of ethylene glycol butyl ether, and 2g of n-dodecyl mercaptan into the reactor, and mix it with an agitator, and control the temperature of the reactor to 80°C;

[0054] 2) Continuously drop the mixture I into the reactor, the mixture I is 28.9g of methyl methacrylate, 26.3g of butyl acrylate, 17.3g of hydroxyethyl methacrylate, 3.63g of vinyltrioxysilane and 1.5g of azobisisobutyronitrile, the dropwise addition time is 2 hours; after dropping, add 0.3g of azobisisobutyronitrile, 0.25g of n-dodecyl mercaptan and 10g of methanol, and then keep warm for 2h ;

[0055] 3) Then dropwise add the mixture III, the mixture III is 43.4g methyl methacrylate, 6g methacrylic acid, 39.5g butyl acrylate, 26g hydroxyethyl methacrylate, 5.75g vinyltrioxysilane and 2.5g even A homogeneous mixture of azobisisobutyronitrile, the time for dropping is 3.5 hours; after dropping, add 0.6g of azobisisobutyronitr...

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Abstract

The invention discloses aqueous color paste and a preparation method thereof. The color paste comprises the following components by weight: 20-45 parts of organic pigment, 5-12 parts of aqueous acrylic resin, 0.8-12 parts of nanometer zinc oxide, 0.2-1 part of an aqueous dispersant, 0.3-1 part of an aqueous defoaming agent, 0.1-1 part of a stabilizer and 45-78 parts of water, wherein the organic pigment has a particle size of 10 to 20 [mu]m, and the nanometer zinc oxide has a particle size of 20 to 60 nm. The preparation method comprises the following steps: 1) adding grinding glass beads andwater into a reactor and carrying out uniform mixing; 2) sequentially adding the aqueous dispersant, the aqueous defoaming agent and the aqueous acrylic resin into the reactor, and carrying out uniform mixing; and 3) adding the organic pigment and the nanometer zinc oxide into a system obtained in the step 2), carrying out uniform mixing, and then carrying out filtering to remove the grinding glass beads so as to obtain the aqueous color paste. The aqueous color paste provided by the invention has moderate viscosity, good dispersion stability, and high hiding rate and good gloss after film formation.

Description

technical field [0001] The invention relates to the field of color paste, in particular to a water-based color paste and a preparation method thereof. Background technique [0002] Water-based color paste is a pigment dispersion, which is a pigment paste made by uniformly dispersing pigment particles into water with water as the dispersion medium. It is generally composed of water, powdered pigment, dispersant, defoamer, etc. In addition, some functional additives can be added according to actual application and storage requirements. [0003] Since the water-based color paste can be dispersed in the water-based resin, it forms a water-based paint together with the water-based resin. Therefore, the application field of water-based color paste is very wide, and can be used in various coatings, leather coloring, ink, textile printing, paper and other industries, and is currently mainly used in the coatings industry. [0004] With the progress of society, people have higher ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00
CPCC09D17/003
Inventor 姜惠敏
Owner HAIMEN CITY RUITAI TEXTILE TECH CO LTD