Two-component waterborne coating and preparation method thereof

A water-based coating, two-component technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as unusability and environmental impact of water-based coating construction, to extend the opening time, protect the human living environment, and achieve good performance. Effect

Inactive Publication Date: 2018-12-21
商丘市博大化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide a two-component water-based paint, by introducing functional resin and functional co-solvent, the coating formulation has been reasonably improved, due to the special properties of functional resin and co-solvent, making Water-based coatings can still obtain good paint film effects in harsh construction environments, that is, low-temperature and high-humidity environments, thus solving the technical problem that water-based coatings are affected by the construction environment and cannot be used under low-temperature and high-humidity conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Component A: 50 parts of Antkote2033 water-based hydroxyacrylic acid dispersion, 4 parts of water-based functional resin, 25 parts of water-based color paste, 0.3 parts of Borchi Gel 0620 thickener, 2 parts of ethanol, 2 parts of propylene glycol methyl ether, BYK349 ​​substrate wetting 0.3 parts of agent, 0.2 parts of Tego100 leveling agent, 0.2 parts of BYK011 defoamer, 6 parts of distilled water.

[0026] B component: 20 parts of Baydydur XP2655 water-based polyisocyanate curing agent.

[0027] Mix components A and B evenly before use, and adjust to spray viscosity with distilled water.

Embodiment 2

[0029] Component A: 50 parts of Antkote2033 water-based hydroxyacrylic acid dispersion, 5 parts of water-based functional resin, 25 parts of water-based color paste, 0.3 parts of Borchi Gel 0620 thickener, 2 parts of ethanol, 2 parts of methyl ethyl ketone, 0.3 parts of BYK349 ​​substrate wetting agent 0.2 parts of Tego100 leveling agent, 0.2 parts of BYK011 defoamer, 6 parts of distilled water.

[0030] B component: 20 parts of Baydydur XP2655 water-based polyisocyanate curing agent.

[0031] Mix components A and B evenly before use, and adjust to spray viscosity with distilled water.

Embodiment 3

[0033] Component A: 50 parts of CTR6014 water-based hydroxyl acrylic dispersion, 4 parts of water-based functional resin, 26 parts of water-based color paste, 0.3 parts of Borchi Gel 0620 thickener, 2 parts of propylene glycol methyl ether, 2 parts of methyl ethyl ketone, BYK349 ​​substrate wetting 0.3 parts of agent, 0.2 parts of Tego100 leveling agent, 0.2 parts of BYK011 defoamer, 6 parts of distilled water.

[0034] B component: 10 parts of Baydydur XP2655 water-based polyisocyanate curing agent.

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Abstract

The invention discloses a two-component waterborne coating. The two-component waterborne coating comprises a component A and a component B according to parts by weight. The component A is prepared from the following raw materials in parts by weight: 40.0-60.0 parts of waterborne hydroxyacrylic acid dispersion, 3.0-6.0 parts of waterborne functional resin, 20.0-30.0 parts of waterborne color paste,3.0-6.0 parts of functional cosolvent, 0.3-0.6 part of thickener, 0.2-0.4 part of substrate wetting agent, 0.1-0.3 part of leveling agent, 0.1-0.3 part of defoamer, 4.0-10.0 parts of distilled water.The component B is prepared from the following raw materials in parts by weight: 15-25 parts of waterborne polyisocyanate curing agent. The waterborne coating prepared by the scheme is relatively wide in construction window, is still capable of constructing and obtaining good coating film in the severe high-temperature, low-temperature and high-humidity environment, and shows good property; the appearance, the drying speed, the hardness and the water resistance of the coating film achieve ideal effects.

Description

technical field [0001] The invention relates to a two-component water-based paint and a preparation method thereof. Background technique [0002] Due to the promotion of national policies and the improvement of public awareness of environmental protection, more environmentally friendly water-based coatings have replaced traditional solvent-based coatings, which has become the development trend of my country's current coatings industry. Compared with solvent-based coatings, water-based coatings are extremely restricted by construction conditions during use. Generally, they are required to be applied at 5~35°C and 30%~70% humidity. When the temperature is low in winter, especially when the temperature is lower than 5°C, due to the high latent heat of evaporation of water and the slow evaporation of water, the drying speed of water-based paint is extremely slow, making water-based paint unusable. In the high humidity weather of the rainy season, affected by the saturated vapor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08G18/62C08G18/42
CPCC08G18/4208C08G18/6229C09D175/04
Inventor 马晓阳宋学礼韩知非
Owner 商丘市博大化工有限公司
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