Preparation method for flame-retardant waterproof aqueous polyurethane paint

A water-based polyurethane and waterproof technology, applied in polyurea/polyurethane coatings, fireproof coatings, coatings, etc.

Active Publication Date: 2014-10-15
GUANGZHOU SHENGBANG SPORTS GROUND MATERIAL CO LTD
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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

[0019] (2) Add 0.73g of 3-aminopropyltrihydroxysilane and 9.1g of adenosine cyclic phosphate to prepolymer A, react at 60°C for 2h, add 9.1g of triethylamine for neutralization reaction for 40min, add 130g of water Emulsified with 0.09 g of sodium dodecylsulfonate for 60 minutes to obtain a flame-retardant and waterproof water-based polyurethane coating.

[0020] Example two

example 2

[0022] (2), 2.43g of D-mannuronic acid monosodium salt, 2.43g of methyltrihydroxysilane and 33.8g of tris(2,3-dichloropropyl) phosphate added to prepolymer A, at 90°C React for 4 hours, add 20.3g of triethylamine for neutralization reaction for 60 minutes, add 140g of water and 0.68g of sodium dodecylsulfonate for emulsification for 60 minutes, and obtain a flame-retardant and waterproof water-based polyurethane coating.

[0023] Example three

example 3

[0025] (2), 2.49g of 3-aminopropyltrihydroxysilane and 19.8g of 2-chloro-1-(2,4-dichlorophenyl)vinyl diethyl phosphate added to prepolymer A, at 75 React at ℃ for 3 hours, add 14.1g of triethylamine for neutralization reaction for 50 minutes, add 140g of water and 0.34g of sodium dodecylsulfonate for emulsification for 60 minutes, and obtain a flame-retardant and waterproof water-based polyurethane coating.

[0026] Example four

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Abstract

The invention discloses a preparation method for flame-retardant waterproof aqueous polyurethane paint. The preparation method comprises the following steps: in the existence of neodymium fluoride,1,4-bis(hydroxydimethylsilyl)benzene and isophorone diisocyanate are mixed according to the weight ratio of (1:1.3)-(1:2.4), a synergist and tris(4-fluorophenyl)phosphine are added, and the mixture reacts for 1-3 hours at 70-90 DEG C, to obtain a polyurethane prepolymer A; a chain extender, the weight of which accounts for 0.8-3.6% of that of the prepolymer A and a solvent, the weight of which accounts for 10-25% of that of the prepolymer A are added into the prepolymer A, the mixture reacts for 2-4 hours at 60-90 DEG C, triethylamine, the weight of which accounts for 10-15% of that of the prepolymer A is added for a neutralization reaction for 40-60 minutes, and water and sodium dodecyl sulfate are added to be emulsified for 60 minutes to obtain the flame-retardant waterproof aqueous polyurethane paint. The prepared flame-retardant waterproof polyurethane has the advantages of environmental friendliness and low price, and is widely applied to the surfaces of walls, furniture and metal appliances to be used as adhesive for plastic, glass, papermaking and textile.

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] Polyurethane is mainly used in leather finishing, textile printing and dyeing, papermaking, architectural coatings, adhesives, etc. The coatings and paints sprayed on the surface of internal and external walls, furniture, and metal appliances are in direct or indirect contact with humans all the time. , Harmful coatings have also threatened people's health at all times. Because the field of use is often exposed to sunlight, because the sun’s rays contain a large amount of ultraviolet light harmful to colored objects, its wavelength is about 290-460nm, these harmful ultraviolet light changes the color of the paint through chemical oxidation and reduction. [0003] Dibutyltin dilaurate is often used as a catalyst in the synthesis of polyurethane, but si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/18C08G18/10C08G18/32
Inventor 朱蕾高晓琳张建国
Owner GUANGZHOU SHENGBANG SPORTS GROUND MATERIAL CO LTD
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