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Environment-friendly water-based high-adhesion PET (polyethylene terephthalate) precoat coating composition as well as preparation method and application

A high-adhesion, pre-coating technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as poor adhesion of UV light-cured coatings, and achieve the effects of improved efficiency, simple operation, and simple application process

Active Publication Date: 2013-01-23
SHANGHAI WEIKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor adhesion between UV light-curing coatings such as PET hardening liquid or cat's eye coating and PET film, and provide a safe, non-toxic, low-cost, and environmentally friendly water-based PET pre-coating with good adhesion. Layer coating composition and its preparation method and use

Method used

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  • Environment-friendly water-based high-adhesion PET (polyethylene terephthalate) precoat coating composition as well as preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0039] The environment-friendly water-based high-adhesion PET precoat coating composition of this embodiment includes the components and parts by weight shown in Table 1. Its preparation method comprises the following steps:

[0040] (1) Prepare materials according to the components and contents (parts by weight) shown in Table 1:

[0041] (2) Put the water-based resin into the reaction kettle, and stir at a low speed of 400 rpm for 10 minutes to make the mixture even;

[0042] (3) After mixing the co-solvent, deionized water, and film-forming aids evenly, add them to the reaction kettle while stirring, and stir at a low speed of 400 rpm for 10 minutes to make the mixture even;

[0043] (4) Add wetting agent and anti-sticking agent to the reaction kettle in sequence, and stir at a medium speed of 700 rpm for 15 minutes;

[0044] (5) Add a defoamer into the reaction kettle, and stir at a high speed of 1200 rpm for 40 minutes to obtain an environmentally friendly water-based h...

Embodiment 2

[0048] The environment-friendly water-based high-adhesion PET precoat coating composition of this embodiment includes the components and parts by weight shown in Table 1. Its preparation method comprises the following steps:

[0049] (1) Prepare materials according to the components and contents (parts by weight) shown in Table 1:

[0050] (2) Put the water-based resin and curing agent into the reaction kettle in turn, and stir at a low speed of 400 rpm for 5 minutes to make the mixture even;

[0051](3) After mixing the co-solvent, deionized water, and film-forming aids evenly, add them to the reaction kettle while stirring, and stir at a low speed of 400 rpm for 20 minutes to make the mixture even;

[0052] (4) Add a wetting agent into the reaction kettle, and stir at a medium speed of 600 rpm for 10 minutes;

[0053] (5) Add a defoamer into the reaction kettle, and stir at a high speed of 1000 rpm for 30 minutes to obtain an environmentally friendly water-based high-adhes...

Embodiment 3

[0057] The environment-friendly water-based high-adhesion PET precoat coating composition of this embodiment includes the components and parts by weight shown in Table 1. Its preparation method comprises the following steps:

[0058] (1) Prepare materials according to the components and contents (parts by weight) shown in Table 1:

[0059] (2) Put the water-based resin into the reaction kettle, and stir at a low speed of 450 rpm for 7 minutes to make the mixture even;

[0060] (3) After mixing the co-solvent and deionized water evenly, add it into the reaction kettle while stirring, and stir at a low speed of 450 rpm for 15 minutes to make the mixture even;

[0061] (4) Add anti-sticking agent to the reaction kettle, and stir at a medium speed of 800 rpm for 20 minutes;

[0062] (5) Add a defoamer to the reaction kettle, and stir at a high speed of 900 rpm for 35 minutes to obtain an environmentally friendly water-based high-adhesion PET precoat coating composition.

[0063...

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Abstract

The invention discloses an environment-friendly water-based high-adhesion PET (polyethylene terephthalate) precoat coating composition as well as a preparation method and application. The coating composition comprises the following components in parts by weight: 60-75 parts of water-based resins, 0-15 parts of cosolvents and 0-20 parts of deionized water, wherein the coating composition comprises at least one of cosolvents and deionized water; and preferably, when the water-based resins are water-based acrylic acids, water-based polyurethane or the mixtures of the water-based acrylic acids and the water-based polyurethane, the coating composition also comprises 5-10 parts of curing agents by weight. The coating composition has the following advantages that the coating composition is environment-friendly, has low smell, low VOC (volatile organic compounds), low production cost, simple and easily obtained raw materials and good adhesion with PET films and UV (ultraviolet) coatings and are used for such excellent UV photocureable coatings as PET hardening liquid or cat eye products.

Description

technical field [0001] The invention relates to the field of PET pre-coat paints, in particular to an environment-friendly water-based high-adhesion PET pre-coat paint composition and its preparation and application. Background technique [0002] Coating a layer of transparent paint on the surface of the corona treated PET film to improve the adhesion of UV photocurable coatings such as PET hardening liquid or cat's eye paint to the PET film, and prevent the UV photocurable coating layer from falling off. [0003] The traditional existing PET pre-coating paint, on the one hand, uses a large amount of volatile organic solvents, which is easy to generate a large amount of volatile organic compounds (VOCs), polluting the environment; on the other hand, it uses a two-component system, which needs to be pre-mixed before using , The production operation is cumbersome, and the drying time takes 1 to 2 minutes, and the production efficiency is low. [0004] The above-mentioned fact...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D175/04C09D175/14C08J7/04C08L67/02
Inventor 虞明东张学海张芳芳段孔荣戴胜杰
Owner SHANGHAI WEIKAI CHEM
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