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Scratch-resistant epoxy-modified polyester back paint for coils with high coating rate and preparation method thereof

An epoxy-modified polyester, coating rate technology, applied in polyester coatings, coatings, anti-corrosion coatings, etc., can solve the problems of poor paint film processability, low coating rate, low epoxy resin solid content, etc. To achieve the effect of strong humidity and heat resistance, good surface smoothness, and increased stability

Active Publication Date: 2022-03-22
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the increasingly fierce market competition, customers have higher requirements for production line performance evaluation, the replacement of processing molds, coating rate, environmental protection, and better processability have also become key factors for product competitiveness. Oxygen resin has low solid content, low coating rate, hard paint film and slightly poor processability.

Method used

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  • Scratch-resistant epoxy-modified polyester back paint for coils with high coating rate and preparation method thereof
  • Scratch-resistant epoxy-modified polyester back paint for coils with high coating rate and preparation method thereof
  • Scratch-resistant epoxy-modified polyester back paint for coils with high coating rate and preparation method thereof

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Embodiment Construction

[0045] The technical solutions of the present invention will be further described in detail below through examples. The scope of the present invention is not limited by the specific embodiments but by the scope of the claims.

[0046] Under the situation that the purpose of the present invention is clarified and explained through the following examples, the components of the composition are all explained in parts by weight as a general standard. Unless otherwise specified, for the sake of brevity, "parts" and "parts by weight" in the embodiments of the present invention have the same meaning.

[0047] Epoxy-modified polyester resin A-T described in embodiment 1-60 is prepared according to the following operation steps:

[0048] Step (1): Put I, II (see Table 1) and solvent xylene in the formula into a clean reaction flask equipped with stirring, thermometer, water separator, fractionating column, and inert gas inlet, and wait for the material to melt. , start stirring, and p...

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Abstract

The invention discloses a scratch-resistant epoxy modified polyester back paint for coils with high coating rate, which comprises the following components in parts by weight: 20-35 parts of epoxy modified polyester resin, branched polyester 3-10 parts of resin, 4-10 parts of curing agent, 20-35 parts of pigment and filler, 0.2-1 part of wax powder, 2-4 parts of auxiliary agent, 15-30 parts of mixed solvent; wherein, the epoxy modified poly The ester resin is prepared by ring-opening polymerization of epoxy resin and linear carboxyl-terminated polyester resin prepolymer. The invention also discloses a preparation method of a scratch-resistant epoxy modified polyester back paint for coils with high coating rate.

Description

technical field [0001] The invention relates to the technical field of coil coatings, in particular to a scratch-resistant epoxy-modified polyester back paint for coils with a high coating rate and a preparation method thereof. Background technique [0002] As a higher and newer application market for pre-coated coil coatings, the home appliance panel market has been booming in recent years. Compared with traditional construction panels, home appliance panels have higher requirements on the performance of back paint. The back paint of home appliance board usually adopts a single coat, and the film is relatively thin. The main function is to protect the back. The requirements for decoration and durability are not high. Therefore, the technical content of high-performance home appliance back paint is quite high. [0003] Considering the low requirements for the weather resistance of the coil back paint and the general requirements for decorative protection, it is important ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/02C09D167/00C09D5/08C09D7/61C08G63/91
CPCC09D167/02C09D5/08C09D7/61C08G63/916C08K2003/2241C08K2003/3045C08L67/00C08K3/22C08K3/30C08K3/34C08K3/346
Inventor 李扬冯春苗吴奎录周春利蒋旭
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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