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Acrylate emulsion for waterborne metal paint and preparation method thereof

A water-based metallic paint, acrylate technology, applied in the direction of coating, can solve problems such as insufficient water resistance, and achieve the effect of enhancing water resistance, improving poor water resistance and small monomer amount

Active Publication Date: 2017-11-24
HAOLISEN COATING SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is mainly to solve the problem of insufficient water resistance of acrylate emulsions for water-based metallic paints in the prior art

Method used

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  • Acrylate emulsion for waterborne metal paint and preparation method thereof
  • Acrylate emulsion for waterborne metal paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Preparation of composite emulsifier: Take sodium dodecylbenzenesulfonate: 10g, OP-10: 10g, sodium p-styrenesulfonate: 20g, mix well.

[0026] (2) Preparation of nuclear monomer pre-emulsion: get styrene: 100g, methyl methacrylate: 100g, butyl acrylate: 50g, isooctyl acrylate: 50g, deionized water: 170g, composite emulsifier: 20g, Initiator: 0.5 g is placed in a reaction kettle at a rotational speed of 600 r / min, and dispersed for 20 min to prepare a nuclear monomer pre-emulsion.

[0027] (3) Preparation of shell monomer pre-emulsion: styrene: 50g, methyl methacrylate: 50g, isooctyl acrylate: 50g, hydroxyethyl methacrylate: 10g, methacrylic acid: 10g, acetyl methacrylate Acetoxyethyl ester: 10g, vinyltrimethoxysilane: 10g, deionized water, 170g; complex emulsifier, 20g; initiator: 0.5g was placed in a reaction kettle at a speed of 600r / min, and dispersed for 20min to obtain a shell Monomer pre-emulsion.

[0028] (4) Weigh deionized water: 150g, initiator: 0.5g; pH ...

Embodiment 2

[0030] (1) Preparation of composite emulsifier: Take sodium dodecylbenzenesulfonate: 10g, OP-10: 10g, sodium p-styrenesulfonate: 20g, mix well.

[0031] (2) Preparation of nuclear monomer pre-emulsion: take styrene: 50g, methyl methacrylate: 100g, butyl acrylate: 50g, deionized water: 170g, composite emulsifier: 20g, initiator: 0.5g in In the reaction kettle, the rotation speed is 600r / min, and the nucleus monomer pre-emulsion is prepared by dispersing for 20min.

[0032] (3) Preparation of shell monomer pre-emulsion: styrene: 50g, methyl methacrylate: 50g, butyl acrylate: 30g, isooctyl acrylate: 50g, hydroxyethyl methacrylate: 20g, methacrylic acid: 10g, acetoacetoxyethyl methacrylate: 20g, vinyltriethoxysilane: 20g, deionized water, 170g; composite emulsifier, 20g; initiator: 0.5g is placed in the reaction kettle, and the rotation speed is 600r / min, dispersed for 20 minutes to prepare the shell monomer pre-emulsion.

[0033] (4) Weigh deionized water: 150g, initiator: 0.5...

Embodiment 3

[0035] (1) Preparation of composite emulsifier: Take sodium dodecylbenzenesulfonate: 10g, OP-10: 10g, sodium p-styrenesulfonate: 20g, mix well.

[0036] (2) Preparation of nuclear monomer pre-emulsion: take styrene: 50g, methyl methacrylate: 100g, butyl acrylate: 50g, deionized water: 170g, composite emulsifier: 20g, initiator: 0.5g in In the reaction kettle, the rotation speed is 600r / min, and the nucleus monomer pre-emulsion is prepared by dispersing for 20min.

[0037](3) Preparation of shell monomer pre-emulsion: styrene: 50g, methyl methacrylate: 65g, isooctyl acrylate: 50g, hydroxyethyl methacrylate: 30g, acrylic acid: 15g, acetoacetoxymethacrylate Ethyl ester: 15g, methacryloxypropyl trimethoxysilane: 15g, deionized water, 170g; complex emulsifier, 20g; The shell monomer pre-emulsion was prepared in 20 minutes.

[0038] (4) Weigh deionized water: 150g, initiator: 0.5g; pH buffer: 0.5g in the reaction kettle, stir at 200r / min, heat up to 75°C, start to add the nuclear ...

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Abstract

The invention discloses an acrylate emulsion for water-based metal paint and a preparation method thereof. The emulsion is composed of the following substances in parts by weight, vinyl monomers or vinyl aromatic compounds not containing carboxyl or hydroxyl groups: 33 to 45 parts, containing Hydroxyl vinyl monomer: 1-7 parts, carboxyl-containing vinyl monomer: 0.5-1 part, functional monomer: 1-3 parts, organosilicon monomer: 1-3 parts, initiator: 0.15-0.4 parts Parts, compound emulsifier: 1-4 parts, neutralizer: 0.1-0.5 parts, pH buffer: 0.05-0.1 parts, deionized water: 45-50 parts, obtained by core / shell emulsion polymerization. Use this emulsion and amino resin to prepare a varnish and scrape it on a tinplate. At room temperature, after soaking in water for 7 days, the adhesion is grade 0 (cross-hatch method), and there is no whitening.

Description

[technical field] [0001] The invention relates to an acrylate emulsion and a preparation method thereof, in particular to an acrylate emulsion for water-based metal paint and a preparation method thereof. [Background technique] [0002] Metallic paint is widely used in metal anticorrosion and decoration. At present, most of the metallic paints on the market are solvent-based paints, because they are more harmful to the environment and human body during production, transportation and painting. People have developed a series of water-based metallic paints. In the long run, water-based metallic paints are developing in a green and environmentally friendly direction, and are getting more and more attention from the market and the government. [0003] Compared with the water-based metallic paints and solvent-based metallic paints currently on the market, although water-based metallic paints have an absolute advantage in environmental protection, they still have deficiencies in pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F212/08C08F220/18C08F220/28C08F220/06C08F230/08C08F2/30C08F2/26C09D125/14C09D133/12
Inventor 刘薇薇郑子童孔凡桃张建中徐杰
Owner HAOLISEN COATING SHANGHAI
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