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Epoxy-polysiloxane resin for paint and preparation method thereof

A technology of polysiloxane resin and polysiloxane, which is applied in the direction of epoxy resin coating, coating, etc., can solve the problems of poor compatibility, large difference in solubility parameters, unstable product performance, etc., and achieve compatibility Good, good storage stability, excellent storage stability effect

Inactive Publication Date: 2012-02-15
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, the solubility parameter of bisphenol A type epoxy resin and polysiloxane is very different, causes the compatibility of both poor, and the epoxy-polysiloxane prepared by this method is easy in preparation and storage process. Phase separation occurs, resulting in unstable product properties

Method used

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  • Epoxy-polysiloxane resin for paint and preparation method thereof
  • Epoxy-polysiloxane resin for paint and preparation method thereof
  • Epoxy-polysiloxane resin for paint and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A kind of preparation method of epoxy-polysiloxane resin for coating, it comprises the steps:

[0027] 40g hydrogenated bisphenol A epoxy resin JET-300 (epoxy equivalent 230g / eq, Jiangshan Jianghuan Chemical Industry Co., Ltd.) and 160g methoxyl-containing polysiloxane DC-3074 (molecular weight 1400, U.S. Dow Corning Corporation) Placed in a three-necked flask, under N 2 Stir under protection and heat up to 80°C, then add 10g of dibutyltin dilaurate dropwise, continue to heat up to 140°C, stir at constant temperature for 4 hours, and after cooling, an epoxy-polymer for coatings with good compatibility and excellent storage stability can be obtained. Silicone resin. The experimental results are shown in Table 1.

[0028] The epoxy-polysiloxane resin for coating is applied to prepare epoxy-polysiloxane coating composition. Preparation of epoxy-polysiloxane coating composition: Component A: Add 100 g of the above-mentioned epoxy-polysiloxane resin, 15 g of banana water,...

Embodiment 2

[0030] A kind of preparation method of epoxy-polysiloxane resin for coating, it comprises the steps:

[0031] 160g of hydrogenated bisphenol A epoxy resin ST-3000 (epoxy equivalent 240g / eq, Dongdu Kasei, Japan) and 40g of methoxy-containing polysiloxane DC-3074 (molecular weight 1400) were placed in a three-necked flask. N 2Stir under protection and heat up to 80°C, then add 1g of dibutyltin dilaurate dropwise, continue to heat up to 140°C, stir at constant temperature for 4 hours, and after cooling, an epoxy-polymer for coatings with good compatibility and excellent storage stability can be obtained. Silicone resin. The experimental results are shown in Table 1.

[0032] The epoxy-polysiloxane resin for coating is applied to prepare epoxy-polysiloxane coating composition. Preparation of epoxy-polysiloxane coating composition: Component A: Add 100 g of the above-mentioned epoxy-polysiloxane resin, 25 g of banana water, and 2 g of leveling agent (Levelol 835) to a beaker in ...

Embodiment 3

[0034] A kind of preparation method of epoxy-polysiloxane resin for coating, it comprises the steps:

[0035] Put 100g ST-3000H (hydrogenated bisphenol A epoxy resin, epoxy equivalent 205g / eq, Japan Toto Kasei) and 100g DC-3037 (methoxyl-containing polysiloxane, molecular weight 1000, American Dow Corning) in three ports flask, in N 2 Stir under protection and heat up to 80°C, then add 5g of stannous octoate dropwise, continue to heat up to 140°C, stir at a constant temperature for 4 hours, and obtain an epoxy-polysiloxane for coatings with good compatibility and excellent storage stability after cooling alkane resin. The experimental results are shown in Table 1.

[0036] The epoxy-polysiloxane resin for coating is applied to prepare epoxy-polysiloxane coating composition. Preparation of epoxy-polysiloxane coating composition: Component A: Add 100 g of the above-mentioned epoxy-polysiloxane resin, 20 g of banana water, and 1 g of leveling agent (Levelol 835) to a beaker in...

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Abstract

The invention relates to epoxy-polysiloxane resin for paint and a preparation method thereof. The epoxy-polysiloxane resin for paint is characterized by being prepared from A hydrogenated bisphenol epoxy resin, active polysiloxane and organic tin catalysts, wherein the A hydrogenated bisphenol epoxy resin accounts for 20 to 80 mass percent, the active polysiloxane accounts for 20 to 80 mass percent, and the organic tin catalysts accounts for 0.5 to 5 percent of the total mass of the A hydrogenated bisphenol epoxy resin and the active polysiloxane. The epoxy-polysiloxane resin for paint prepared by the method has the characteristics of good compatibility and good storage stability. When the epoxy-polysiloxane resin for paint is applied to preparing epoxy-polysiloxane resin paint compositions, cured coating layers have excellent bonding performance, flexibility, weather resisting performance and anti-corrosion performance.

Description

technical field [0001] The invention relates to an epoxy-polysiloxane resin for coating and a preparation method thereof. Background technique [0002] Protective coatings for industrial equipment, marine facilities, and aviation equipment must be exposed to corrosive and ultraviolet environments. Such protective coatings typically comprise a crosslinkable resin system that includes binders, curing agents, flow additives and optionally pigments and fillers. For protective coatings, the resins used are mainly: epoxy resin (aromatic or aliphatic), polyurethane, acrylic resin and polysiloxane resin. [0003] Silicone resins are widely used in various fields because they can form coatings excellent in weather resistance, heat resistance, and chemical resistance. Pure polysiloxane resin usually needs to be cured at high temperature, which puts forward higher requirements on the coating construction of coatings, and is not suitable for large-area or on-site construction, so the ...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G59/14C09D187/00C09D163/02
Inventor 余剑英潘钇安艾平松晏石林
Owner WUHAN UNIV OF TECH
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