Reaction type water-based color paste and preparation method thereof

A water-based color paste, reactive technology, applied in the direction of pigment paste, etc., can solve the problems affecting the fluid properties of color paste products, the impact of coating water resistance, poor water solubility, etc., to achieve excellent storage stability and avoid floating color , the effect of good compatibility

Inactive Publication Date: 2020-02-28
DONGLAI COATING TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In fact, the water solubility of styrene-maleic anhydride copolymer is not good. The viscosity of the system after dispersion of this type of polymer dispersant is high, which affects the fluid properties o...

Method used

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  • Reaction type water-based color paste and preparation method thereof
  • Reaction type water-based color paste and preparation method thereof
  • Reaction type water-based color paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation of styrene-maleic anhydride copolymer polyether ester: be 30% styrene-maleic anhydride copolymer (molecular weight is 2000, molecular weight distribution index is 1.5) and monomethyl end-capped polyethylene with maleic anhydride mole fraction Diol (molecular weight 2500) was mixed according to maleic anhydride and polyethylene glycol 1:1 (molar ratio), stirred evenly, 1 wt% p-toluenesulfonic acid was added, heated to 120°C, and reacted for 6h. Add hydroxylated pigment (the hydroxyl content is equal to the molar amount of maleic anhydride), raise the temperature to 130°C, continue the reaction for 2.0h, add ammonia solution, adjust the pH to 7.0, add water to adjust the viscosity to 50s (coat 4 cups). Obtained reactive water-based color paste (1).

Embodiment 2

[0036]The preparation of styrene-maleic anhydride copolymer polyether ester: be 80% styrene-maleic anhydride copolymer (molecular weight is 10000, molecular weight distribution index is 1.0) and the polypropylene glycol of monomethyl capping with maleic anhydride mole fraction (Molecular weight is 400) Mix maleic anhydride and polypropylene glycol 1:1 (molar ratio), stir evenly, add 5wt% p-toluenesulfonic acid, heat to 100°C, and react for 2.0h. Add hydroxylated carbon black pigment (the hydroxyl content is equal to the molar amount of maleic anhydride), raise the temperature to 150°C, continue the reaction for 6.0h, add diethanolamine aqueous solution, adjust the pH to 8.0, and add water to adjust the viscosity to 20s (coat 4 cups). Acquired reactive water-based color paste (2).

Embodiment 3

[0038] The preparation of styrene-maleic anhydride copolymer polyether ester: the styrene-maleic anhydride copolymer (molecular weight is 1000, and molecular weight distribution index is 2.0) and monomethyl-terminated copolymerization of maleic anhydride mole fraction is 50% Ether (molecular weight is 1000, propylene glycol: ethylene glycol molar ratio = 1:1) is mixed with maleic anhydride and monomethyl terminated copolyether 1:0.1 (molar ratio), stirred evenly, and added 5wt% p-methyl Benzenesulfonic acid, heated to 150 ° C, reacted for 6.0h. Add hydroxylated carbon black pigment (the hydroxyl content is equal to twice the molar amount of maleic anhydride), raise the temperature to 150°C, continue the reaction for 4.0h, add triethanolamine ethanol solution, adjust the pH to 6.0, add water to adjust the viscosity to 30s (coat 4 cups ). Acquired reactive water-based color paste (3).

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Abstract

The invention relates to reaction type water-based color paste and a preparation method thereof. The reaction type water-based color paste is prepared from the following raw material components in parts by weight: styrene-maleic anhydride copolymer polyether ester, a hydroxylated pigment and a neutralizer, wherein the addition amount of the styrene-maleic anhydride copolymer polyether ester and the hydroxylated pigment is that the ratio of the molar weight of maleic anhydride to the molar weight of hydroxyl is (1: 1)-(1: 2), and the addition amount of the neutralizer is that the pH value of the color paste is adjusted to be 6-8. By uniformly stirring and mixing the styrene-maleic anhydride copolymer polyether ester and the hydroxylated pigment (hydroxylated carbon black and the like); heating to 100-150 DEG C, reacting for 2.0-6.0 hours, adding the neutralizer to neutralize until the pH value is 6-8, and adding a certain amount of water to regulate the viscosity, the reaction type water-based color paste is obtained. Compared with the prior art, the color paste provided by the invention has good water solubility and storage stability, has good dispersibility and color rendering property for other pigments and fillers, can form a color paste system with good performance, and can be widely applied to the fields of water-based paint and water-based ink.

Description

technical field [0001] The invention relates to the field of paint and ink color paste, and relates to a preparation method of reactive water-based color paste. Background technique [0002] At present, with the increasingly stringent national environmental protection policies, the water-based process of coatings and ink products is increasingly intensified. In order to meet the water-based process of such products, the research of water-based colorants has become a hot spot. [0003] Products such as coatings and inks are even more demanding on color, which relies on high-performance water-based color pastes. The traditional water-based color paste dispersion process is to fully disperse and grind pigments and water-based dispersants in water-based media to form a uniform texture. Color paste. However, this kind of color paste system formed by physical and mechanical action is unstable, the storage time is short, and it is easy to form agglomeration and sedimentation, whic...

Claims

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Application Information

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IPC IPC(8): C09D17/00C08G81/02
CPCC08G81/025C09D17/00C09D17/003
Inventor 朱忠敏叶小明宗德超郭明东
Owner DONGLAI COATING TECH SHANGHAI
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