Environment-friendly water-based op protective coating composition and its preparation and use

A technology for protecting coatings and compositions, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of high drying temperature, high oxidation resistance, slow curing speed, etc., and achieve good storage stability , The effect of low application cost and efficiency improvement

Active Publication Date: 2017-02-08
SHANGHAI CHENGYING NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, aluminum foil OP protective coatings for packaging are mainly solvent-based products, which use a large amount of volatile organic solvents, which are prone to produce a large amount of volatile organic compounds (VOCs), pollute the environment, and have certain safety hazards; there are a small amount of water-based products on the market. , but compared with solvent-based products, there are generally disadvantages such as high drying temperature, slow curing speed, poor heat resistance, and high easy oxidation.

Method used

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  • Environment-friendly water-based op protective coating composition and its preparation and use
  • Environment-friendly water-based op protective coating composition and its preparation and use
  • Environment-friendly water-based op protective coating composition and its preparation and use

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Experimental program
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Effect test

Embodiment 1

[0033] The environment-friendly water-based OP protective coating composition of the present embodiment includes the components and parts by weight shown in Table 1. Its preparation method comprises the following steps:

[0034] (1) according to each component shown in table 1 and content (weight part) prepare raw materials:

[0035] (2) Put the water-based main resin, functional auxiliary resin, and curing agent into the reaction kettle, and stir at a low speed of 400 rpm for 10 minutes to make the mixture even;

[0036] (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;

[0037] (4) Add a wetting agent and a pH regulator to the reaction kettle in sequence, and stir at a medium speed of 700 rpm for 15 minutes;

[0038] (5) Add a defoamer into the reaction kettle, and stir at a high speed of 1200 rpm for 40 minutes to obtain...

Embodiment 2

[0042] The environment-friendly water-based OP protective coating composition of the present embodiment includes the components and parts by weight shown in Table 1. Its preparation method comprises the following steps:

[0043] (1) according to each component shown in table 1 and content (weight part) prepare raw materials:

[0044] (2) Put the water-based main resin, functional auxiliary resin, and curing agent into the reaction kettle in sequence, and stir at a low speed of 400 rpm for 5 minutes to make the mixture even;

[0045] (3) After mixing the co-solvent, deionized water, and film-forming aids evenly, add them into the reaction kettle while stirring, and stir at a low speed of 400 rpm for 20 minutes to make the mixture even;

[0046] (4) Add a wetting agent and a pH regulator into the reaction kettle, and stir at a medium speed of 600 rpm for 10 minutes;

[0047] (5) Add a defoamer into the reaction kettle, and stir at a high speed of 1000 rpm for 30 minutes to obt...

Embodiment 3

[0051] The environment-friendly water-based OP protective coating composition of the present embodiment includes the components and parts by weight shown in Table 1. Its preparation method comprises the following steps:

[0052] (1) according to each component shown in table 1 and content (weight part) prepare raw materials:

[0053] (2) Put the water-based main resin, functional auxiliary resin, and curing agent into the reaction kettle, and stir at a low speed of 450 rpm for 7 minutes to make the mixture even;

[0054] (3) After mixing deionized water and film-forming aids evenly, add them to the reaction kettle while stirring, and stir at a low speed of 450 rpm for 15 minutes to make the mixture even;

[0055](4) Add a wetting agent and a pH regulator into the reaction kettle, and stir at a medium speed of 800 rpm for 20 minutes;

[0056] (5) Add a defoamer into the reaction kettle, and stir at a high speed of 900 rpm for 35 minutes to obtain an environmentally friendly w...

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PUM

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Abstract

The invention discloses an environment-friendly water-based OP protective paint composition, and preparation and a use thereof. The composition comprises 18-30 parts of water-based main resin, 1-10 parts of curing agent, 20-40 parts of functional auxiliary resin, 0-15 parts of cosolvent, 10-55 parts of deionized water, 0.4-3 parts of coalescing agent, 0.3-0.8 part of wetting agent, 0.1-0.4 part of defoaming agent and 1-1.5 parts of pH regulator. For preparation, the water-based main resin, the functional auxiliary resin and the curing agent are orderly added, and stirred at a low speed; the coalescing agent, the cosolvent and the de-ionized water are evenly mixed together, or the coalescing agent is added while stirring after the cosolvent and the deionized water are evenly mixed together, and then the mixture is stirred at a low speed; the wetting agent and the pH regulator are added and stirred at a middle speed; then the defoaming agent is added to the mixture and stirred evenly at a high speed; therefore, the environment-friendly water-based OP protective paint composition is obtained. Compared with the prior art, the paint composition disclosed by the invention is safe and nontoxic, low in cost, low in content of readily oxidizable substances, low in smell, good in coating property, high in curing efficiency, good in heat resistance and excellent in adhesive force.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to an environment-friendly water-based OP protective coating composition and its preparation and application. Background technique [0002] OP protective coating, also known as varnish, is the protective agent coated on the surface of aluminum foil for food and pharmaceutical packaging and printing. It can improve the anti-acid and alkali erosion ability of aluminum foil, prolong the shelf life of medicines; protect the printing layer, so that the ink and the aluminum foil substrate can be effectively bonded without falling off or damaged. In today's rapidly developing society, manufacturers not only pay more attention to production efficiency and packaging processing speed, but also put forward higher requirements for the performance of the aluminum foil protective layer. [0003] At present, aluminum foil OP protective coatings for packaging are mainly solvent-based products, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D175/04C09D167/00C09D7/00
Inventor 虞明东张学海王玉春
Owner SHANGHAI CHENGYING NEW MATERIALS
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