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Benzene-free stable laser anodized aluminum color layer coating composition and preparation method thereof

A stable, composition technology, applied in coatings and other directions, can solve problems such as the inability to meet the stability of benzene-containing coatings, and achieve the effects of eliminating the risk of heavy metals exceeding the standard, excellent stability, and wide adaptability to temperature.

Active Publication Date: 2016-02-03
SHANGHAI WEIKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating composition of the present invention can solve the problems that the existing coatings cannot satisfy the problems of benzene content and coating stability after molding of the laser anodized aluminum color layer, and truly realize benzene-free and stable performance, and can be stored for a long time

Method used

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  • Benzene-free stable laser anodized aluminum color layer coating composition and preparation method thereof
  • Benzene-free stable laser anodized aluminum color layer coating composition and preparation method thereof
  • Benzene-free stable laser anodized aluminum color layer coating composition and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] This embodiment relates to a benzene-free stable laser anodized aluminum color layer coating composition, including the components and dosage shown in Table 1.

[0027] The preparation method of the benzene-free stable type laser anodized aluminum color layer coating composition of the present embodiment comprises the following process steps:

[0028] (1) Prepare raw materials according to the components and parts by weight shown in Table 1:

[0029] (2) Put the solvent in the reaction kettle according to the formula, turn on the stirring device, and mix evenly;

[0030] (3) Put the resin component into the reaction kettle, control the stirring rate to be 500rpm, and stir for 4h to fully dissolve the resin component;

[0031] (4) When the resin component is completely dissolved, put the additives into the reaction kettle, control the stirring rate to 500rpm, and stir for 15 minutes until the additives are fully dispersed and evenly distributed;

[0032] (5) Put the re...

Embodiment 2

[0034] This embodiment relates to a benzene-free stable laser anodized aluminum color layer coating composition, including the components and dosage shown in Table 1.

[0035] The preparation method of the benzene-free stable type laser anodized aluminum color layer coating composition of the present embodiment comprises the following process steps:

[0036] (1) Prepare raw materials according to the components and parts by weight shown in Table 1:

[0037] (2) Put the solvent in the reaction kettle according to the formula, turn on the stirring device, and mix evenly;

[0038] (3) Put the resin component into the reactor, control the stirring rate to be 600rpm, and stir for 2h to fully dissolve the resin component;

[0039] (4) When the resin components are completely dissolved, put the additives into the reaction kettle, control the stirring rate to 400rpm, and stir for 20min until the additives are fully dispersed and evenly distributed;

[0040] (5) Put the required pigm...

Embodiment 3

[0042] This embodiment relates to a benzene-free stable laser anodized aluminum color layer coating composition, including the components and dosage shown in Table 1.

[0043] The preparation method of the benzene-free stable type laser anodized aluminum color layer coating composition of the present embodiment comprises the following process steps:

[0044] (1) Prepare raw materials according to the components and parts by weight shown in Table 1:

[0045] (2) Put the solvent in the reaction kettle according to the formula, turn on the stirring device, and mix evenly;

[0046] (3) Put the resin component into the reaction kettle, control the stirring rate to be 550rpm, and stir for 3h to fully dissolve the resin component;

[0047] (4) When the resin components are completely dissolved, put the additives into the reaction kettle, control the stirring rate to 450rpm, and stir for 30 minutes until the additives are fully dispersed and evenly distributed;

[0048] (5) Put the ...

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Abstract

The invention discloses a coating composition for a benzene-free stable laser anodized aluminum color layer and a preparation method thereof. The coating composition comprises the following components in parts by weight: 20-40 parts of polyacrylate resin, 10-20 parts of polyacrylate resin containing carboxyl groups, 2-10 parts of pigment, 0.2-0.5 part of assistant and 40-60 parts of solvents; the content of the carboxyl groups in the polyacrylate resin containing carboxyl groups is 5-30%, and the weight-average molecular weight is 15000-80000. According to the coating composition disclosed by the invention, the traditional dye toner is replaced by the pigment, so that the coating for the color layer is benzene-free no matter after being placed or mold pressed, and the heavy metal standard exceeding risk of the dye toner is completely avoided; in addition, the polyacrylate resin adopted in the coating composition disclosed by the invention contains carboxyl functional groups to ensure good firmness of combination between the coating and the pigment so as to obtain good-stability coating for the color layer; in addition, the coating for the color layer can be stored for more than half a year.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a coating composition for a benzene-free stable laser anodized aluminum color layer and a preparation method thereof. Background technique [0002] Laser anodized aluminum has beautiful holographic rainbow luster, various colors, and can be made into various shapes and patterns. It is one of the widely used anti-counterfeiting methods at present. Laser anodized aluminum is widely used in high-end cigarette labels, wine labels, cosmetic packaging, food packaging, calendars and other fields, and the application volume is gradually increasing. At present, the production process of laser anodized aluminum is mature, its performance is stable, and it can meet the needs of the market. Although there are fewer and fewer anodized aluminums in the market that use benzene solvents as formulas, it can greatly reduce the content of benzene series in finished anodized aluminum products, bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/12C09D133/10C09D133/08C09D7/12
Inventor 虞明东吴小娟丁万强陈超
Owner SHANGHAI WEIKAI CHEM
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