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Aqueous acrylic emulsion for special material and preparation method thereof

A water-based acrylic acid and preparation process technology, applied in the field of resins, can solve the problems of high chemical resistance, limited use, difficult application, etc., and achieve the effects of superior solvent resistance, improved flexibility, and guaranteed stability.

Inactive Publication Date: 2019-07-09
江苏巨珩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

Since the emulsifier does not participate in the film formation and is free in the system, it has a great influence on the performance, water resistance and chemical resistance of the paint film, so it has been difficult to apply to special materials.
Moreover, the existing reactive emulsifiers have unsatisfactory emulsification effects, low reactivity to special materials, and limited use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The invention provides a technical solution: a preparation process of water-based acrylic emulsion for special materials, which specifically includes the following steps: firstly, materials containing 5 g of ethylene dicarboxylate, 7 g of phthalic acid and 8 g of glycerin are sequentially put into a reaction kettle; Close the feeding hole, turn on the nitrogen to replace the air in the kettle, and start the heating of the reactor. When the temperature of the material in the kettle reaches 150°C, turn on the motor to stir the material for 5 hours, and wait for the temperature of the material to rise from 150°C to 180°C. Keep warm for 1 hour, then continue to raise the temperature of the material by 5 degrees per hour, keep it at 205°C, increase the flow of nitrogen and keep it at 205°C for 2 hours, and then test the acid value of the sample, when the acid value is less than 8mgKOH / g, continue to cool down to 80 10g of self-synthesized emulsifying monomer was obtained belo...

Embodiment 2

[0032] The invention provides a technical solution: a preparation process of water-based acrylic emulsion for special materials, which specifically includes the following steps: first, put materials containing 6g of succinic acid, 9g of phthalic acid and 9g of glycerin into the reaction kettle in sequence; close the feeding hole, open the nitrogen to replace the air in the kettle, start the heating of the reactor, when the temperature of the material in the kettle reaches 150°C, turn on the motor to stir the material for 5 hours, wait for the temperature of the material to rise from 150°C to 180°C, and keep it at 175°C for 1 After that, the temperature of the material continues to rise by 5 degrees per hour and kept at 210°C. Increase the flow of nitrogen and keep it at 210°C for 2 hours. After the acid value of the sample is tested, when the acid value is less than 8mgKOH / g, continue to cool down to below 80°C Obtain 12g of self-synthesizing emulsifying monomer; drop into 10g ...

Embodiment 3

[0034] The invention provides a technical solution: a preparation process of water-based acrylic emulsion for special materials, which specifically includes the following steps: firstly, materials containing 10 g of ethylene dicarboxylate, 9 g of isophthalic acid and 11 g of pentaerythritol are sequentially put into a reaction kettle; Close the feeding hole, open the nitrogen to replace the air in the kettle, and start the heating of the reactor. When the temperature of the material in the kettle reaches 150°C, turn on the motor to stir the material for 5 hours, and wait for the temperature of the material to rise from 150°C to 180°C. Keep warm for 1 hour, then continue to raise the temperature of the material by 5 degrees per hour, keep it at 215°C, increase the flow of nitrogen gas and keep it at 215°C for 2 hours, and then after the acid value of the sample is tested, when the acid value is less than 8mgKOH / g, continue to cool down to 78 15g of self-synthesized emulsifying m...

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Abstract

An aqueous acrylic emulsion for a special material and a preparation method thereof are provided. Aqueous acrylic latex is prepared by polymerization of double-bonded polyester and self-synthesizing emulsifying monomer, wherein the acrylic emulsion comprises the following components in mass percent: 10-15% of butyl acrylate, 15-20% of methyl methacrylate, 20-25% of styrene, 5-10% of hydroxyethyl acrylate, 10-15% of self-synthesizing emulsifying monomer, 35-40% of deionized water and 0.5-1.5% of potassium persulfate. As compared to that prior art, a low-molecular-weight hydrophilic double-bondpolyester is polymerized with an emulsified monomer, so as to improve the flexibility of the emulsion and the adhesion to the special substrate, ensure the stability of the emulsion, and enables the water-borne acrylic emulsion to have the properties of high adhesion, water resistance, solvent resistance and the like to the special substrate, and the aqueous acrylic emulsion is applicable to the coating of notebook computers, mobile phones, military and other special materials.

Description

technical field [0001] The invention relates to the technical field of resins, in particular to a water-based acrylic emulsion for special materials and a preparation process thereof. Background technique [0002] Traditional acrylic emulsions need to use 1% to 8% emulsifiers to form a stable emulsion system. Since the emulsifier does not participate in the film formation and is free in the system, it has a great influence on the performance, water resistance and chemical resistance of the paint film, so it has been difficult to apply to special materials. Moreover, the existing reactive emulsifiers have unsatisfactory emulsifying effects, low reactivity to special materials, and limited use. Contents of the invention [0003] The purpose of the present invention is to provide a water-based acrylic emulsion for special materials and its preparation process, so as to solve the problems raised in the above-mentioned background technology. [0004] In order to achieve the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/02C08F212/08C08F220/14C08F220/18C08F220/20C08F2/30C08G63/127
CPCC08F2/30C08F212/08C08F283/02C08G63/127C08F220/14C08F220/1804C08F220/20
Inventor 陈玉英
Owner 江苏巨珩新材料科技有限公司