Water reactive acroleic acid microgel latex, acrylic ester water baking paint and preparation thereof

A technology of acrylate and butyl acrylate, applied in latex paint, etc., can solve problems such as high-concentration microgel, unstable product storage, difficult reaction control, etc., achieve broad application prospects, achieve stability, and excellent comprehensive performance Effect

Inactive Publication Date: 2008-10-08
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using traditional emulsifiers, the reaction is difficult to control, it is not easy to prepare high-concentration microgels, and the product is unstable in storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of water-based reactive acrylate microgel emulsion:

[0034] (i) Preparation of pre-emulsified monomer mixture: add 0.25g N, N-methylenebisacrylamide, 32g butyl acrylate, 7.0g hydroxyethyl acrylate, 0.75g OP-10, 0.5g Acrylic acid and 20ml of deionized water were stirred at high speed for 10 minutes to fully pre-emulsify.

[0035] (ii) Preparation of initiator: Add 0.25 g of ammonium persulfate and 14.75 ml of deionized water mixture into a beaker.

[0036] (iii) Preparation of the reaction bottom liquid: In a three-necked flask equipped with a stirrer, a condenser, and a constant temperature water bath, add 2.0 g of self-made amphoteric surfactant, 1.0 g of Aerosol-OT, 0.75 g of OP-10, and 0.25 g of bicarbonate Sodium, 60ml deionized water. Stir mechanically and slowly raise the temperature to 87°C.

[0037] (iv) Preparation of water-based reactive acrylic microgel: move the pre-emulsified mixed monomers into the dropping funnel and slowly drop them into ...

Embodiment 2

[0038] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that the amount of hydroxyethyl acrylate added in the preparation of the aqueous reactive acrylic microgel emulsion is 6.0 g.

Embodiment 3

[0039] Embodiment 3: This embodiment is basically the same as Embodiment 1, except that the amount of hydroxyethyl acrylate added in the preparation of the aqueous reactive acrylic microgel emulsion is 5.0 g.

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Abstract

The invention relates to waterborne reactive acrylic micro-gel emulsion, waterborne acrylic baking paint and the preparation methods. The micro-gel emulsion is made from the following components through emulsion polymerization: the mixed monomer composed of butyl acrylate, 2-hydroxy ethyl acrylate and acrylic acid; N,N-methylene-bis-acrylamide which serves as the cross-linker; surfactants; free radical initiators; and deionized water; the solid content of the obtained emulsion is 28-35%. The waterborne reactive acrylic micro-gel emulsion and waterborne amino resin are mixed and stirred uniformly based on the mass ratio of 5:1 to11:1, then grinded by a tapered mill until the fineness is less than 20um, and then filtered by a 100-mesh screen to obtain the waterborne acrylic baking paint. Compared with the solvent-type acrylic baking paint widely used on the market, the waterborne acrylic baking paint of the invention has excellent integrated performance, which may entirely replace solvent-related products in the area of industrial coatings and has broad application prospect.

Description

technical field [0001] The invention relates to a water-based reactive acrylic microgel emulsion, an acrylate water-based baking varnish and a preparation method thereof. Background technique [0002] Coatings with (meth)acrylic acid and its ester copolymers as the main film-forming substances are commonly called acrylic coatings. Acrylic paint has the advantages of full coating film and high mechanical strength, and has a wide range of applications in the field of paint. As people pay more and more attention to environmental protection, people hope to reduce the application of solvent-based acrylic coatings, and pay more attention to the research and use of water-based acrylic coatings. However, there are still some shortcomings in the performance of water-based acrylic coatings, and they cannot compete with solvent-based acrylic coatings for the time being. [0003] With the increasing awareness of environmental protection of people. High solid content and water-based c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F2/24C09D133/08C09D5/02
Inventor 张宝华撒圣淑潜飞叶俊丹杨青
Owner SHANGHAI UNIV
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