Silicone acrylate coating resin and preparation method thereof

A technology of silicone acrylic resin and silicone resin, which is applied in the direction of coating, graft polymer adhesive, adhesive type, etc., can solve the problems of poor compatibility and comprehensive performance decline of modified acrylic resin system, etc. Achieve the effects of improving comprehensive performance, enhancing paint film performance, aging resistance and excellent paint film performance

Active Publication Date: 2011-03-02
东胜化学(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the conventional chemical modification method, when the modified polyester contains a small amount of silicone, the coating film has good performance
When the mass fraction of silicone is large, the compatibility of the modified acrylic resin system will become poor, and the overall performance will decrease.

Method used

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  • Silicone acrylate coating resin and preparation method thereof
  • Silicone acrylate coating resin and preparation method thereof
  • Silicone acrylate coating resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. Preparation of silicone acrylic resin (silicon acrylic resin containing 10% silicone resin)

[0057] In a 500mL four-neck flask, add 80g xylene, 20g isopropanol; weigh 60g methyl methacrylate, 20g butyl acrylate, 10g glycidyl methacrylate, 10g γ-methacryloxypropyl trimethyl Oxysilane is formulated as a mixed monomer, and 0.1g of benzoyl peroxide is added, stirred and dissolved to form a mixed solution; 20g of the above mixed solution is added to the reactor at one time, and kept at 100-110°C for 1 hour under reflux; Then 80g of the above-mentioned mixed solution was added dropwise into the reactor for 2 hours, and after the dropwise addition, it was kept under reflux for 3 hours; then the temperature was lowered, and when the temperature dropped to 80°C, 20g of silicone resin was added, and the heat preservation was continued to obtain Silicone acrylic resin with 10% silicone resin.

[0058] 2. Preparation of coating resin

[0059] Add 15.56 g of curing agent γ-ami...

Embodiment 2

[0061] 1. Preparation of silicone acrylic resin (silicone acrylic resin containing 20% ​​silicone resin)

[0062] In a 500mL four-neck flask, add 60g of xylene and 40g of isopropanol; weigh 60g of n-butyl methacrylate, 20g of ethyl acrylate, 15g of glycidyl methacrylate, and 5g of γ-methacryloxypropyl Trimethoxysilane is formulated as a mixed monomer, and 0.5g of benzoyl peroxide is added, stirred and dissolved to form a mixed solution; 20g of the above mixed solution is added to the reactor at one time, and kept at 100-110°C for 1h under reflux Then 80g of the above-mentioned mixed solution was added dropwise to the reactor for 2 hours, and after the dropwise addition, it was kept in a reflux state for 3 hours; then the temperature was lowered, and when the temperature dropped to 80°C, 40g of silicone resin was added to continue the heat preservation. A silicone acrylic resin containing 20% ​​silicone resin was obtained.

[0063] 1. Preparation of coating resin

[0064] Add...

Embodiment 3

[0066] 1. Preparation of silicone acrylic resin (silicon acrylic resin containing 30% silicone resin)

[0067] In a 500mL four-neck flask, add 50g xylene, 50g isopropanol; weigh 50g methyl methacrylate, 30g butyl acrylate, 10g glycidyl methacrylate, 10g γ-methacryloxypropyl trimethyl Oxysilane is formulated as a mixed monomer, and 0.2g of benzoyl peroxide is added, stirred and dissolved to form a mixed solution; 20g of the above mixed solution is added to the reactor at one time, and kept at 100-110°C for 1h under reflux; Then 80g of the above-mentioned mixed solution was added dropwise to the reactor for 2 hours, and after the dropwise addition, it was kept under reflux for 3 hours; then the temperature was lowered, and when the temperature dropped to 80°C, 60g of silicone resin was added, and the heat preservation was continued to obtain Silicone acrylic resin with 30% silicone resin.

[0068] 2. Preparation of coating resin

[0069] Add 23.3 g of curing agent γ-aminopropy...

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Abstract

The invention belongs to the fields of coating, adhesive and functional material and in particular relates to silicone acrylate coating resin and a preparation method thereof. The preparation method comprises the following steps: copolymerizing acrylic monomer, acrylic monomer with epoxy groups and silane coupling agent with unsaturated bonds to obtain acrylic resin; then adding organosilicon resin to mixed evenly and obtain silicone acrylate resin, or adding silicone oil with double bonds in the polymerization of acrylic resin to directly obtain silicone acrylate resin; and mixing silicone acrylate resin with curing agent evenly to obtain the finished product, wherein the weight ratio of acrylic monomer to acrylic monomer with epoxy groups and silane coupling agent with unsaturated bonds is (75%-90%):(0%-15%):(5%-10%). The silicone acrylate resin obtained by the preparation method can be cured at the room temperature and have excellent aging resistance and paint film performances.

Description

technical field [0001] The invention belongs to the field of coatings, adhesives and functional materials, and in particular relates to a silicone acrylic coating resin and a preparation method thereof. technical background [0002] Organosilicon monomers and their polymers have low surface tension, low glass transition temperature, good permeability, and water resistance, temperature resistance, and weather resistance, which play an important role in the application of organosilicon in polymer material science. However, the molecular chain of silicone-based polymers is more flexible, and the force between molecules is smaller, so the mechanical strength is lower, and the adhesion to other objects is poor. [0003] Acrylic resin is a resin made by the copolymerization of acrylates, methacrylates and other ethylenic monomers. By choosing different resin structures, different formulas, production processes and solvents, it can be synthesized with different types, different pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D133/12C09D133/10C09D183/04C09D7/12C08F290/06C08F220/14C08F220/18C09J151/08C09J133/12C09J133/10C09J183/04
Inventor 李坚王红丹吴佳佳任强
Owner 东胜化学(上海)有限公司
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