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A kind of preparation method of flame-retardant and waterproof waterborne polyurethane coating

A water-based polyurethane, waterproof technology, applied in the direction of polyurea/polyurethane coatings, fire-resistant coatings, polyurea/polyurethane adhesives, etc. Effect

Inactive Publication Date: 2016-08-17
湖南帅旗防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Dibutyltin dilaurate is often used as a catalyst in the synthesis of polyurethane, but since the heavy metal tin is harmful to the environment with the degradation of polyurethane, efficient and non-toxic catalysts are screened is a major problem in the synthesis of polyurethane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] (1) Add 60g of 3-aminopropyltrihydroxysilane, 84g of isophorone diisocyanate and 0.18g of tetramethylammonium hydroxide into a 500ml three-necked flask equipped with a stirrer, a condenser and a thermometer, and set the temperature at 70°C Reaction 1h, obtains polyurethane prepolymer A to be 144g;

[0031] (2) Add 1.14g of clomiphene citrate and 10.7g of adenosine cyclic phosphate to polyurethane prepolymer A, react at 60°C for 3h, add 14.2g of triethylamine and 0.6g of propylamine bromide Neutralize for 30 minutes, then add 4.1 g of boron trifluoride diethyl ether, react at 70 ° C for 1 h, add 80 g of water and 0.28 g of sodium dodecylsulfonate for emulsification for 60 min, and obtain a flame-retardant and waterproof water-based polyurethane coating.

example 2

[0033] (1) Add 60g of diphenyldihydroxysilane, 84g of isophorone diisocyanate and 0.72g of tetramethylammonium hydroxide into a 500ml three-necked flask equipped with a stirrer, condenser and thermometer, and react at 80°C for 3h , obtaining polyurethane prepolymer A is 144g;

[0034] (2) Add 4.07g of nicotinamide adenine dinucleotide phosphate, 4.07g of methyltrihydroxysilane and 58g of tris(2,3-dichloropropyl) phosphate to polyurethane prepolymer A, at 80℃ React at 70°C for 4h, add 20.7g of triethylamine and 5.2g of chlorpromazine for neutralization reaction for 60min, then add 2.38g of benzyltrimethylammonium fluoride, react at 70°C for 1h, add water 100g and dodecylsulfonic acid Sodium 0.58g was emulsified for 60 minutes to obtain a flame-retardant and waterproof water-based polyurethane coating.

example 3

[0036] (1) Add 80g of 4,4'-bis(dimethylhydroxysilyl)diphenyl ether, 84g of isophorone diisocyanate and tetramethylhydrogen into a 500ml three-necked flask equipped with a stirrer, condenser and thermometer Ammonium oxide 0.27g was reacted at 75°C for 3h to obtain 164g of polyurethane prepolymer A;

[0037] (2) Add 5.7g of pyridoxal phosphate and 35g of 2-chloro-1-(2,4-dichlorophenyl) vinyl diethyl phosphate to polyurethane prepolymer A, and react at 70°C for 3.5 h, add 17.4g of triethylamine and 2.1g of niclosamide for neutralization reaction for 45min, add 2.7g of tetrabutylammonium fluoride and 2.1g of R-HCH, react at 70°C for 1h, add water 110g and dodeca 0.43 g of sodium alkyl sulfonate was emulsified for 60 minutes to obtain a flame-retardant and waterproof water-based polyurethane coating.

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PUM

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Abstract

The invention discloses a method for preparing flame-retardancy and waterproof aqueous polyurethane coating and adhesive. The method comprises the following steps: in the presence of tetramethyl ammonium hydroxide, mixing a flame-retardancy hydroxy compound with isophorone diisocyanate, and reacting to obtain a polyurethane prepolymer A; adding a chain extender into the polyurethane prepolymer A, reacting for 3-4 hours, further adding triethylamine, performing neutralization reaction, and adding water and sodium dodecyl sulfonate for emulsion, thereby obtaining the flame-retardancy and waterproof aqueous polyurethane coating and adhesive. The prepared flame-retardancy and waterproof aqueous polyurethane coating and adhesive is environmentally friendly and low in price and is widely used on surfaces of walls, furniture and metal utensils as an adhesive of plastic, glass, paper and fabrics.

Description

technical field [0001] The invention relates to a preparation method of polyurethane paint, in particular to a preparation method of flame-retardant and waterproof water-based polyurethane paint. Background technique [0002] The main application fields of waterproof materials include roofing, underground, exterior walls and interiors of housing construction; municipal projects such as urban roads, bridges and underground spaces; bridges and tunnels of expressways and high-speed railways; traffic projects such as underground railways; aqueducts, reservoirs, dams , water conservancy power station and water treatment and other water conservancy projects, suitable for waterproofing, anti-seepage, and moisture-proof of roofs, toilets, basements, reservoirs, and walls. According to the application materials, it can be used in papermaking, textile, leather and other fields. [0003] Dibutyltin dilaurate is often used as a catalyst in the synthesis of polyurethane, but since the h...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/18C09D7/12C09J175/04C09J11/06C08G18/75C08G18/32C08G18/34C08G18/38C08G18/16
CPCC08G18/168C08G18/3228C08G18/3246C08G18/3802C08G18/3882C08G18/3889C08G18/3893C08G18/755C08K3/38C08K5/02C08K5/19C09D5/18C09D7/63C09D175/04C09J11/06C09J175/04
Inventor 王文艳于海江
Owner 湖南帅旗防水材料有限公司
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