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High-decorative acrylic polysiloxane coating and preparation method thereof

A technology of acrylic polysiloxane and acrylic polymer, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of glossiness, smoothness, fullness, artificial aging, poor decoration, etc., and achieve great economic value And environmental protection value, high fullness, good decorative effect

Active Publication Date: 2019-11-12
陕西宝塔山油漆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polysiloxane coatings on the market have the disadvantages of good artificial aging, good salt spray resistance, but poor decoration, mainly in gloss, smoothness, and low fullness.

Method used

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  • High-decorative acrylic polysiloxane coating and preparation method thereof
  • High-decorative acrylic polysiloxane coating and preparation method thereof
  • High-decorative acrylic polysiloxane coating and preparation method thereof

Examples

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preparation example Construction

[0032] The preparation method of high decorative acrylic polysiloxane coating of the present invention, comprises the following steps:

[0033] 1) Preparation of rheological oligomers:

[0034] Take 18-23 parts of dimethylamine and 13-16 parts of formaldehyde and put them in a three-necked flask. After the reaction is complete for about 1 hour, add 50-60 parts of nonionic polyacrylamide to the amine methylation reaction system. After reacting at ~50°C for 3-4 hours, slowly add 9-11 parts of dimethyl sulfate for quaternization treatment, react for 1 hour and then cool to room temperature. The product is an aqueous solution, which is evaporated and dried into a solid powder, and then the powdered oligomer is dissolved into a solution with a mass fraction of 25% by using xylene, which is a rheological oligomer.

[0035] 2) Preparation of thermoplastic rheological acrylic resin A:

[0036] Put 30-35 parts of rheological oligomer, 4-6 parts of butyl acrylate, 8-10 parts of methyl...

Embodiment 1

[0044] Step 1, prepare rheological oligomer, it comprises following reaction process:

[0045] Take 18 parts of dimethylamine and 13 parts of formaldehyde in a three-necked flask. After the reaction is complete for about 1 hour, add 60 parts of nonionic polyacrylamide to the amine methylation reaction system, and react at 45°C for 4 hours. Then slowly add 9 parts of dimethyl sulfate for quaternization treatment, react for 1 hour and then cool to room temperature. The product is an aqueous solution, which is evaporated and dried into a solid powder, and then the powdered oligomer is dissolved into a solution with a mass fraction of 25% by using xylene, which is a rheological oligomer. Its reaction equation is:

[0046]

[0047] Step 2, preparing thermoplastic rheological type acrylic polymer resin A, the required raw materials and quantity ratio are as follows:

[0048]

[0049] Polymerization process:

[0050] The rheological oligomer, butyl acrylate, methyl methacrylat...

Embodiment 2

[0060] Step 1, prepare rheological oligomer, it comprises following reaction process:

[0061] Take 23 parts of dimethylamine and 16 parts of formaldehyde in a three-necked flask. After the reaction is complete for about 1 hour, add 50 parts of nonionic polyacrylamide to the amine methylation reaction system, and react at 50°C for 3 hours. Then slowly add 11 parts of dimethyl sulfate for quaternization treatment, react for 1 hour and then cool to room temperature. The product is an aqueous solution, which is evaporated and dried into a solid powder, and then the powdery oligomer is dissolved into a solution with a mass fraction of 25% using xylene, which is a rheological oligomer;

[0062] Step 2, preparing thermoplastic rheological type acrylic polymer resin A, the required raw materials and quantity ratio are as follows:

[0063]

[0064] The raw materials of above-mentioned proportioning are made thermoplastic rheological type acrylic resin A cooling filter packaging ac...

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Abstract

The invention discloses a high-decorative acrylic polysiloxane coating and a preparation method thereof. The coating is a two-component coating, and comprises an A component and a B component; the A component comprises the following materials: acrylic polysiloxane resin, self-prepared thermoplastic rheological acrylic polymer resin A, self-prepared thermoplastic rheological acrylic polymer resin B, a dispersant, a levelling agent and a solvent; and the B component is non-isocyanate cured epoxy resin. The coating uses two self-prepared thermoplastic rheological acrylic polymer resin as rheological auxiliary agents. The coating provided by the invention has better decorativeness under the premise of achieving super-long aging performance and corrosion resistance; moreover, airless spraying construction is used, the solid content is as high as 80%, and the VOC content during construction is low; and the coating provided by the invention can replace a polyurethane coating and a fluorocarbon coating which are widely used in the prior art, and has higher economic value and environmental protection value.

Description

technical field [0001] The invention belongs to the field of anti-corrosion coatings, in particular to a method for preparing high-decorative acrylic polysiloxane coatings by self-made two types of thermoplastic rheological acrylic polymer resins as rheological additives. Background technique [0002] With the development of the national economy and the improvement of people's living standards, people put forward higher requirements for the corrosion protection of large-scale steel structure projects. It is necessary to improve the long-term protection cycle, but also to be safe, healthy and environmentally friendly. In recent years, acrylic polysiloxane topcoats tend to replace fluorocarbon topcoats and acrylic polyurethane topcoats. However, polysiloxane coatings on the market have the disadvantages of good artificial aging and good salt spray resistance but poor decoration, mainly manifested in low gloss, smoothness and fullness. [0003] Acrylic polysiloxane topcoat is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C09D151/00C09D5/08C09D7/65C08F265/10C08F220/14C08F220/18C08F212/08
CPCC08F265/10C08L2205/025C08L2205/035C09D5/08C09D183/06C09D7/65C08L33/00C08L51/003C08F220/14
Inventor 孙佳佳刘宪文王娅丽卫龙边林防张华妮薛丹张新平祝婷张锋
Owner 陕西宝塔山油漆股份有限公司
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