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Efficient antibacterial waterborne polyurethane floor coating and preparation method thereof

A technology for water-based polyurethane and floor coatings, applied in polyurea/polyurethane coatings, antifouling/underwater coatings, coatings, etc., can solve the problems of poor compatibility between antibacterial agents and water, difficulty and so on

Active Publication Date: 2014-08-13
上海维度化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few studies on waterborne polyurethane antibacterial coatings, because the current antibacterial agents are mainly divided into inorganic antibacterial agents, organic antibacterial agents and composite antibacterial agents. These antibacterial agents are not very miscible with water. Therefore, if these There will be some difficulties in adding antibacterial agents to waterborne polyurethane coatings to make antibacterial coatings

Method used

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  • Efficient antibacterial waterborne polyurethane floor coating and preparation method thereof
  • Efficient antibacterial waterborne polyurethane floor coating and preparation method thereof
  • Efficient antibacterial waterborne polyurethane floor coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of component A: 25 parts by weight of polyethylene glycol ether and 25 parts by weight of 1,6-hexamethylene diisocyanate (HDI) are added to a three-necked flask equipped with a thermometer, a stirring device and a reflux condenser, and the Under protection, heat to 90°C for 2 hours, then add 5 parts by weight of dimethylolpropionic acid DMPA to react for 1 hour, finally add 7 parts by weight of chain extender diethyltoluenediamine, react at 60°C for 4 hours, and cool to 30°C Discharge, neutralize the prepolymer with triethylamine (TEA) to pH = 7, then add 2 parts by weight of water-based epoxy-coated silver-loaded (Ag / EP-PEG) antibacterial agent, 30 parts by weight of deionized water, high-speed Emulsified for 30 minutes to obtain a white emulsion.

[0026] Preparation of component B: add 10 parts by weight of silicon micropowder, 8 parts by weight of titanium dioxide, 8 parts by weight of talcum powder, 30 parts by weight of polyethylene glycol ether, 25 pa...

Embodiment 2

[0029] Preparation of component A: 22 parts by weight of polypropylene glycol ether and 28 parts by weight of 1,6-hexamethylene diisocyanate (HDI) were added to a three-necked flask equipped with a thermometer, a stirring device and a reflux condenser, under nitrogen protection , heated to 90°C for 2 hours, then added 7 parts by weight of dimethylolpropionic acid DMPA to react for 1 hour, and finally added 4 parts by weight of chain extender dimethylmercaptotoluenediamine, reacted at 60°C for 3 hours, cooled to 30°C and discharged , neutralize the prepolymer with triethylamine (TEA) to pH = 7, then add 1 weight part of water-based epoxy-coated silver (Ag / EP-PEG) antibacterial agent, 30 weight parts of deionized water, and emulsify at high speed for 10 minutes A white emulsion was obtained.

[0030] Preparation of component B: add 8 parts by weight of silicon micropowder, 10 parts by weight of titanium dioxide, 10 parts by weight of talcum powder, 25 parts by weight of polypent...

Embodiment 3

[0033] Preparation of component A: 30 parts by weight of polycarbonate diol and 26 parts by weight of 1,6-hexamethylene diisocyanate (HDI) are added to a three-necked flask equipped with a thermometer, a stirring device and a reflux condenser. Under nitrogen protection, heat to 80°C for 3 hours, then add 5 parts by weight of dimethylolpropionic acid DMPA for 1 hour, finally add 5 parts by weight of chain extender 1,4-butanediol, react at 60°C for 5 hours, and cool to Discharge at 25°C, neutralize the prepolymer with triethylamine (TEA) to pH = 7, then add 1 part by weight of water-based epoxy-coated silver (Ag / EP-PEG) antibacterial agent, and 30 parts by weight of deionized water , high-speed emulsification for 30 minutes to obtain a white emulsion.

[0034] Preparation of component B: add 10 parts by weight of silicon micropowder, 8 parts by weight of titanium dioxide, 10 parts by weight of talcum powder, 25 parts by weight of polytetrahydrofuran ether glycol, 30 parts by wei...

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Abstract

The invention discloses an efficient antibacterial waterborne polyurethane floor coating and a preparation method thereof. The method comprises the following steps: firstly, reacting 1,6-hexamethylene diisocyanate (HDI) with polyether polyol, DMPA, a chain extender and the like to obtain a polyurethane prepolymer; then adding triethylamine for neutralization; adding an appropriate amount of auxiliaries and a waterborne antibacterial agent, and emulsifying at high speed to obtain the waterborne polyurethane floor coating. The waterborne polyurethane floor coating has excellent weather resistance, wear resistance and anti-microbial-adsorption performance. The waterborne polyurethane floor coating not only keeps good adhesive force to the floor, good water resistance and good chemicals resisting performance, but also has good antibacterial performance.

Description

technical field [0001] The invention relates to a high-efficiency antibacterial waterborne polyurethane coating and a preparation method thereof, belonging to the field of polymer material preparation. Background technique [0002] Polyurethane coatings have been widely used in furniture coating, metal anti-corrosion, and automobile coating because of their good wear resistance, corrosion resistance, chemical resistance, high hardness, high elasticity, etc. , aircraft skin, floor paint, road marking paint, etc. [0003] At present, the polyurethane coatings in my country are mainly two-component alkyd polyurethane coatings, which are made of TDI prepolymer and hydroxyl-containing alkyd resin, but because of their serious yellowing, they can only be used in dark interiors. with paint. With the development of technology, especially the increase in demand for high decorative weather-resistant coatings, non-yellowing aliphatic polyurethane raw materials are used to improve yell...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D175/06C09D5/14C08G18/73C08G18/66C08G18/48C08G18/44C08G18/12
Inventor 赵云辉朱庆坚郭俊涂天赐
Owner 上海维度化工科技有限公司
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