A kind of durable antibacterial waterborne wood coating and preparation method thereof

A wood coating, water-based technology, applied in the field of coatings, can solve the problem that the durability of antibacterial effect needs to be studied, and achieve the effect of excellent board surface effect, fine and smooth surface, and good antibacterial performance.

Active Publication Date: 2021-03-02
肇庆易涂宝涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the existing antibacterial coatings have a wide variety of antibacterial agents, and the durability of the antibacterial effect produced by compound use needs to be studied. It is necessary to provide a stable and durable antibacterial coating to meet market demand.

Method used

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  • A kind of durable antibacterial waterborne wood coating and preparation method thereof
  • A kind of durable antibacterial waterborne wood coating and preparation method thereof
  • A kind of durable antibacterial waterborne wood coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The preparation of embodiment 1 water-soluble alkyd resin

[0043] The preparation raw material composition of embodiment 1 water-soluble alkyd resin is shown in the following table:

[0044] raw material Recipe 1 Recipe 2 Recipe 3 Recipe 4 Artemisia oil 35 30 35 40 pentaerythritol 20 15 15 20 Propylene Glycol 15 10 15 15 Phthalic anhydride 20 10 15 20 Adipic acid 5 9 6 5 lithium hydroxide 0.08 0.05 0.06 1 p-Toluenesulfonic acid 0.08 0.05 0.06 1

[0045] Preparation:

[0046] Under the protection of nitrogen, put the formula amount of artemisia annua oil, pentaerythritol, propylene glycol and lithium hydroxide in the reactor, mix well, first raise the temperature to 100°C, and then raise the temperature to 200°C at a rate of 25°C / h for reaction 12h, cool down to 100°C, then add phthalic anhydride, adipic acid and p-toluenesulfonic acid, raise the temperature to 220°C at a heating rate o...

Embodiment 2

[0047] The preparation of embodiment 2 ketone cross-linked polyamide polyamine epichlorohydrin

[0048] Take polyamide and dissolve it in 0.15mol / L hydrochloric acid solution, stir until it is completely dissolved to make a polyamide solution with a concentration of 5% (m / v), and then add pre-dissolved polyamide with a concentration of 2% (m / v). Methylisothiazolinone / isothiazolinone aqueous solution, react at room temperature for 3h, the weight ratio of the polyamide to methylisothiazolinone / isothiazolinone is 1:0.2, then the reaction solution is dried under reduced pressure and pressed into powder, then disperse the powder in water to make the solid content reach 25%, heat to 35°C, slowly add epichlorohydrin, keep the pH of the system at 7.5, react for 2h, the amount of epichlorohydrin added 15% by weight of the polyamide, reacted at 70°C for 3 hours, adjusted the pH to 3.0 with hydrochloric acid, and dried under reduced pressure to obtain ketone cross-linked polyamide polyam...

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Abstract

The invention relates to a durable antibacterial waterborne woodenware coating and a preparation method thereof. The coating comprises the following components: water soluble alkyd resin, a waterbornepolyurethane polyol dispersion body, an amino resin mixture, nano TiO2, nano ZnO, an association type thickener, a leveling agent, a defoamer, a basic wetting agent and deionized water, wherein the amino resin mixture is composed of methylated amino resin and ketone crosslinked polyamide polyamine epichlorohydrin with the weight ratio of 1:(0.2-0.6). The waterborne coating provided by the invention has durable antibacterial activity and mildew-proof performance, has a wide antibacterial spectrum, and has the killing effect on common pathogens such as staphylococcus aureus, streptococcus pneumonia, candida albicans, pseudomonas aeruginosa and aspergillus niger reaching 99.90% or more; through SGS ASTM F1980 tests, the woodenware coating still has the bacteriostasis rate of 99.30% or more 5years later, and has 5 years or more antibacterial effect.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a durable antibacterial water-based wood coating and a preparation method thereof. Background technique [0002] In my country, wood coatings have been widely used in furniture, doors and windows, wall panels, wooden musical instruments, sporting goods, stationery, children's toys, etc., to give wood and wood-based materials the required aesthetic characteristics such as color and luster, and to furniture and Household woodware has the largest demand and is closely related to people's daily life. [0003] With the improvement of people's living standards, the requirements for wood coatings are no longer limited to non-toxic, environmentally friendly, less volatile matter, good water resistance, etc., but also have good antibacterial and mildew resistance. When the antibacterial coating is used in public places, it can reduce the bacterial content in public places, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/08C09D175/04C09D5/14C08G63/49C08G69/48
CPCC08G63/48C08G69/48C08K2003/2241C08K2003/2296C08K2201/011C08L2205/035C09D5/14C09D167/08C09D175/04C08L75/04C08L61/32C08L77/00C08K3/22C08K5/103C08L67/08
Inventor 李国光高岳辉王国平黄开燕付顺明
Owner 肇庆易涂宝涂料有限公司
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