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Silicon-containing acrylate-polyester resin, and finish coat and application thereof

A silicon acrylate and polyester resin technology, applied in the field of silicon-containing acrylic-polyester resin, can solve the problems of insufficient paint film fullness and scratch resistance, poor comprehensive performance and high cost

Inactive Publication Date: 2013-01-02
常州市弘可利办公用品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although these disclosed copolymers have improved the protective durability of the paint film compared with other copolymers, there are still some unsatisfactory shortcomings. In addition to the high cost, the fullness and scratch resistance of the paint film are poor not high enough
There are many literature reports on silicone-modified acrylate resins, few literature reports on silicone-modified polyester resins, and few literature reports on silicone-modified acrylate-polyester resin copolymers
In addition, most of the copolymers or compositions reported in patents have fewer types of constituents. For example, the silicone-modified acrylate resins reported in the literature are generally copolymers composed of only 3-7 monomers. Such copolymerization The overall performance of the substance or its composition with other components is poor (only focusing on improving the performance of a certain aspect or a few aspects, without taking into account other performances), and is not suitable for automotive topcoats

Method used

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  • Silicon-containing acrylate-polyester resin, and finish coat and application thereof
  • Silicon-containing acrylate-polyester resin, and finish coat and application thereof
  • Silicon-containing acrylate-polyester resin, and finish coat and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Synthesis of Silicon-Containing Acrylate-Polyester Resin Copolymer

[0050] Step 1: Synthesis of silicone-modified acrylate

[0051] Various silicone-modified acrylates were synthesized according to the components and dosages listed in Table 1 below, wherein formula E is a comparative example without silicone. The amount of each component in Table 1 is measured in "parts by weight".

[0052] Table 1

[0053]

[0054] Pour isooctyl methacrylate, E-10, 1 / 4 of the total amount of the remaining monomer mixture, 1 / 5 of the amount of DTAP and the solvent in each of the above formulations into the In the four-necked flask of the tube and dropping funnel, the four-necked flask is placed in a silicone oil bath, and the stirring is started. When the temperature rises above 110°C, the total amount of 3 / 4 of the remaining monomers and 4 / 5 of the amount are added dropwise. A mixture of DTAP and octylthiol. The reaction temperature is controlled at 120° C. to 125° C., and the ...

Embodiment 2

[0061] The silicon-containing acrylate-polyester resin copolymers of 6 formulations obtained in Example 1 were used as the base resin respectively, and Trganox1010 and 0.3wt% of Silicone 017, and mixed evenly, respectively as 6 components I. In addition, take HDI based on the above-mentioned resin content of 25wt%, dissolve it in an appropriate amount of propylene glycol methyl ether acetate and xylene (1:1.5 volume ratio) mixed solvent, so that the prepared varnish has a solid content of 35wt%-40wt%, and add a base material based on the resin T12 with a mass of 0.03wt% was mixed as component II and divided into 6 parts. Before coating, mix each component I and each component II evenly, and it can be applied by brushing, roller coating and spraying.

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Abstract

The invention relates to a silicon-containing acrylate-polyester resin which is prepared by carrying out free-radical polymerization and polycondensation on functional monomers composed of organic silison monomer (especially vinyl siloxane monomer) and multiple (methyl) acrylic acid (acrylate) monomers, polybasic carboxylic acids and polybasic alcohols. By increasing the quantity and varieties of the polymerization monomers, the prepared resin effectively combines the advantages of the organic silicon resin, acrylate resin and polyester resin, so that the coat prepared by using the resin as the base material not only has excellent functions of pollution resistance and self-cleaning, but also has the advantages of excellent corrosion resistance, high / low temperature stability, weather resistance, wear resistance, shock resistance, chemical medium resistance, corrosion resistance and solvent resistance as well as sufficient hardness, flexibility, brightness, fullness and the like.

Description

technical field [0001] The invention relates to a silicon-containing acrylic-polyester resin, in particular to a copolymer obtained by condensation polymerization of a silicone-modified acrylic ester, polycarboxylic acid and polyhydric alcohol, which is used as a base resin to prepare paint for automobiles Protection of the car surface. Background technique [0002] Acrylic resin has the characteristics of high transparency, correct color, color retention, gloss retention, heat resistance, corrosion resistance, strong adhesion, toughness and flexibility. A series of coatings, so it is widely used in the fields of construction, transportation, electrical appliances, instruments, equipment and light industrial products. In terms of the application of automotive paint, there are many papers and reports, and more reports are devoted to the synthesis and application of hydroxyacrylate. Hydroxyacrylate has better decorative effect of coating film appearance and weather resistance...

Claims

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Application Information

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IPC IPC(8): C08G63/695C09D175/06
Inventor 包柏青朱立群杨昕徐金龙周蔚蔚陈贻炽刘慧丛周磊
Owner 常州市弘可利办公用品有限公司
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