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A kind of high-adhesion and deodorant water-based acrylate emulsion and preparation method thereof

A water-based acrylate, high adhesion technology, applied in the direction of coating, etc., can solve the problems of easy volatilization, demulsification, emulsion explosion, etc., and achieve the effect of simple post-processing, improved adhesion, and improved wettability

Active Publication Date: 2022-07-08
福建华夏蓝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ammonia, organic amines, etc. need to react with the residual monomers in the system at a very high temperature, which may cause problems such as emulsion explosion and demulsification, and the residual monomers cannot be completely eliminated; hydrazine hydrate and acrylate monomers are heated Under these conditions, the reaction activity is high and the effect is good, but because hydrazine hydrate itself is highly toxic and volatile, improper storage may cause serious consequences such as explosion, and the residual hydrazine hydrate cannot be removed from the system by conventional separation methods. It is necessary to ensure that the dosage is accurate, and it is impossible to achieve large-scale mass production in practical applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of the high-adhesion and deodorant water-based acrylate emulsion is:

[0044] (1) In mole fractions, 1 mol of allyl acrylate and 1.05 mol of 4-nitroimidazole were stirred uniformly under nitrogen protection, and 0.1 mol of catalyst 1-butyl-3-methylimidazole hydroxide and 0.03 mol of tetrakis were added. Butylammonium bromide is heated to 60°C, kept at a constant temperature for 6 hours, and cooled to 15°C to obtain allyl 3-(4-nitroimidazolyl) propionate;

[0045] (2) 400 g of acrylic acid, 137 g methyl methacrylate, 155 g butyl methacrylate and 93 g (2-ethylhexyl) acrylate were stirred and mixed uniformly to obtain a monomer composition. Dissolve 10g of emulsifier CM-30 in 400g of deionized water, after complete dissolution, add the monomer composition to the aqueous solution of the emulsifier, and disperse at high speed for 0.5-1 hour to obtain a white and viscous stable pre-emulsion; Add 5g initiator ammonium persulfate into the reaction kettle...

Embodiment 2

[0048] The preparation method of the high-adhesion and deodorant water-based acrylate emulsion is:

[0049] (1) Stir 1 mol of allyl methacrylate and 1.13 mol of imidazole under nitrogen protection, and add 0.05 mol of catalyst 1-butyl-3-methylimidazole hydroxide and 0.04 mol of trioctylmethylammonium bromide. , be heated to 50 ℃, constant temperature for 3 hours, cooled to 25 ℃, get 2-methyl-3-imidazolyl propionate allyl ester;

[0050] (2) Add 100g of 2-methyl-3-imidazolyl propionate to 1300g of acrylic acid, 533g of methyl acrylate, 250g of ethyl acrylate, 268g of butyl methacrylate and 185g of methacrylic acid (2-ethyl acrylate) In the mixture composed of the hexyl) ester, the mixture is uniformly stirred and mixed to obtain the monomer composition. Dissolve 48g of emulsifier T-80 in 1400g of deionized water, and after complete dissolution, add the monomer composition to the aqueous solution of the emulsifier, and disperse at high speed for 1 hour to obtain a stable pre-em...

Embodiment 3

[0053] The preparation method of the high-adhesion and deodorant water-based acrylate emulsion is:

[0054] (1) 1mol of allyl methacrylate and 1.08mol of 4-methylimidazole were stirred uniformly under nitrogen protection, and 0.08mol of catalyst 1-butyl-3-methylimidazole hydroxide and 0.05mol of hexadecyltris Methylammonium bromide, heated to 40°C, kept at a constant temperature for 8 hours, and cooled to 20°C to obtain allyl 2-methyl-3-(4-methylimidazolyl) propionate;

[0055] (2) Add 100g of 2-methyl-3-(4-methylimidazolyl) allyl acrylate to 3000g of 120g of acrylic acid, 800g of methyl methacrylate, 1250g of ethyl acrylate and 830g of acrylic acid (2-ethyl acrylate) In the mixture composed of hexyl) ester, stir and mix uniformly to obtain a monomer composition. Dissolve 80g of emulsifier SDS in 4000g of deionized water, after complete dissolution, add the monomer composition to the aqueous solution of emulsifier, and disperse at high speed for 0.5 hours to obtain a stable p...

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Abstract

The invention relates to a high-adhesion and deodorant water-based acrylate emulsion and a preparation method thereof. The main component of the high-adhesion and deodorant water-based acrylate emulsion is a modified polyacrylate whose side chain contains imidazole and its derivative groups, which has strong cohesion, good stability, and high transparency after film formation; during the synthesis process, imidazole and Its derivatives undergo an addition reaction with the residual acrylate monomers to form odorless, tasteless, non-volatile compounds with low surface tension. As a high-efficiency substrate wetting agent, it can significantly improve the wettability of the emulsion to the substrate. At the same time, it acts as an interface agent. , one end is closely connected with the substrate, and the other end is combined with the acrylate polymer containing imidazole structure to improve the adhesion of the polymer on the surface of the difficult-to-adhere substrate.

Description

technical field [0001] The invention relates to a high-adhesion and deodorant water-based acrylate emulsion and a preparation method thereof. Background technique [0002] With the gradual strengthening of environmental protection regulations, the state's control of energy conservation and emission reduction and the enhancement of people's awareness of environmental protection, new materials with low VOC or even zero VOC, non-toxic and non-polluting have been widely recognized and developed rapidly. Water-based coatings are therefore highly sought after by people. Water-based coatings are made by adding water-based additives and pigments and fillers to water-based emulsions when water is used as the carrier. They have high surface tension and poor adhesion to some low-surface-tension substrates, which seriously affects the versatility of coatings. In the synthesis process of the aqueous emulsion, with the increase of the degree of reaction, its cage effect, vitrification ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C09D153/00
CPCC08F293/00C09D153/00
Inventor 邱元进饶长贵陈国栋
Owner 福建华夏蓝新材料科技有限公司
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