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High-coating-amount back paint composition for coiled materials, back paint for coiled materials and application of back paint

A composition and high-coating technology, which can be used in devices, coatings, polyester coatings, etc. to apply liquid to the surface, which can solve the problems of poor paint film processability, low coating rate, and low epoxy resin solid content. , to achieve the effect of excellent polyurethane foaming, good surface smoothness and increased coating amount

Pending Publication Date: 2020-02-18
NIPPON PAINT GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • High-coating-amount back paint composition for coiled materials, back paint for coiled materials and application of back paint
  • High-coating-amount back paint composition for coiled materials, back paint for coiled materials and application of back paint
  • High-coating-amount back paint composition for coiled materials, back paint for coiled materials and application of back paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The backcoat composition of the coating system of the present invention was prepared according to the formulation described in Table 1 below:

[0059] The formula of table 1 embodiment 1 back paint composition

[0060]

[0061]

[0062] Add polyester resin, epoxy resin, mixed solvent (PMA / DBE / S100 / S150 solvent) in sequence in an appropriate container, mix and stir evenly, then add titanium dioxide and precipitated barium sulfate sequentially under stirring, and stir for 15 minutes. Then use a grinder to grind to a fineness of not more than 15μ, and then add amino resin, wax slurry, wax powder, surface activity improving additives, flexibility improving additives, defoaming agents, leveling agents, catalysts and accessories under stirring. Focus on the accelerator, stir evenly, adjust the color, luster, and viscosity as needed, adjust the viscosity of the mixture to 100-140 seconds / T-4 cup / 25°C, filter and pack to obtain a high coating amount back paint composition...

Embodiment 2

[0065] The backcoat composition of the coating system of the present invention was prepared according to the formulation described in Table 2 below:

[0066] The formula of table 2 embodiment 2 back paint composition

[0067] components name Content (wt%) polyester resin NP 013RJZ 41％ epoxy resin 609-40 15％ solvent PMA / DBE / S100 / S150 10％ coloring pigment Titanium dioxide R2196 8.5％ Extender pigment Precipitated Barium Sulfate 8.5％ amino resin Yp5627b 10％ Wax HI-DISPER 6413(C) 0.5％ wax powder LINEPLUS PF 251-RB wax powder 0.1％ Surfactant Improver NP 003AAF 0.5％ Flexibility Improvement Auxiliary NP 005AAP 2.9％ Defoamer LEVELER T (NPZ) 0.5％ leveling agent LEVELER C (NPZ) 0.5％ catalyst NACURE 1051 1.0％ adhesion promoter AAC 9999 1.0％

[0068] Add polyester resin, epoxy resin, mixed solvent (PMA / DBE / S100 / S150 solvent) in sequence in an appropriate container,...

Embodiment 3

[0071] Prepare the back paint composition of the coating system of the present invention according to the formula shown in the following table 3:

[0072] The formula of table 3 embodiment 3 back paint composition

[0073] components name Content (wt%) polyester resin NP 013RJZ 36％ epoxy resin 609-40 13％ solvent PMA / DBE / S100 / S150 9％ coloring pigment Titanium dioxide R2196 10％ Extender pigment Precipitated Barium Sulfate 17％ amino resin Yp5627b 8％ Wax HI-DISPER 6413(C) 0.5％ wax powder LINEPLUS PF 251-RB wax powder 0.1％ Surfactant Improver NP 003AAF 0.5％ Flexibility Improvement Auxiliary NP 005AAP 2.9％ Defoamer LEVELER T (NPZ) 0.5％ leveling agent LEVELER C (NPZ) 0.5％ catalyst NACURE 1051 1.0％ adhesion promoter AAC 9999 1.0％

[0074] Add polyester resin, epoxy resin, mixed solvent (PMA / DBE / S100 / S150 solvent) in sequence in an appropriate container, mix an...

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Abstract

The invention discloses a high-coating-amount back paint composition for coiled materials, wherein the back paint composition comprises the following components by the weight percentage: 30-45% of polyester resin, 12-16% of epoxy resin, 8-11% of amino resin, 3-53% of a pigment, and 10-16% of a solvent. The back paint composition is high in coating amount and good in processability, and can be wellused as a back paint of coiled steel. The invention further discloses the back paint prepared from the back paint composition and an application of the back paint.

Description

technical field [0001] The present invention relates to the technical field of coil coatings. More specifically, it relates to a high coating amount coil back paint composition, a coil back paint and applications thereof. Background technique [0002] Coil coating, also known as pre-coated coil coating, is a kind of rapid, automatic and continuous coating on uninterrupted metal sheet (the sheet is derusted, degreased, cleaned, passivated and surface treated before coating). It is a special coating with certain mechanical and physical properties after curing at high temperature to form a film. Pre-coated coil products are currently widely used in various fields such as construction, home appliances, containers, and automobile manufacturing. Pre-coated coil products (referred to as color-coated sheets), the surface of the color-coated sheet is smooth, rich in color and wide in gloss, and can achieve surface effects that cannot be obtained by ordinary spray coatings. The bigg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D163/00C09D161/20C09D161/32C09D7/61B05D7/26B05D7/16
CPCB05D7/16B05D7/26C08K2003/2241C08K2003/3045C08L2205/035C09D167/00C09D7/61C08L63/00C08L61/20C08L61/32C08K3/22C08K3/30
Inventor 陶新张伟东叶思贤沈雪峰宫原贵宏
Owner NIPPON PAINT GUANGZHOU