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Preparation method of light-resistant and waterproof waterborne polyurethane paint

A water-based polyurethane and water-repellent technology, applied in the direction of non-polymer adhesive additives, coatings, adhesive additives, etc., can solve the environmental hazards of heavy metal tin and other problems

Inactive Publication Date: 2015-09-09
朱蕾
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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, reducing the toxicity of the catalyst 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] (1) Add 0.15g of dibutyltin dilaurate, 50g of polytetrahydrofuran ether glycol and 75g of isophorone diisocyanate into a 500ml three-necked flask with a stirring bar and a thermometer, and react at 70°C for 1 hour to obtain 124.9g Polyurethane prepolymer A, the molecular weight of described polytetrahydrofuran ether glycol is 2000g / mol;

[0020] (2) Add 1.25g of dimethylolpropionic acid and 22.5g of acetone solvent to polyurethane prepolymer A, react at 70°C for 2h, add 12.5g of triethylamine at 70°C for neutralization reaction for 30min, and then react at 75°C Add 2.5g of resveratrol, 1.25g of zinc dimethyl dithiocarbamate, 1.25g of potassium methyl silicate and 0.5g of sorbitol, react at 80°C for 1h, add water 120g, sodium dodecylsulfonate 0.25 g and 0.12 g of trisodium nitrilotriacetate were emulsified at 80°C for 60 minutes to obtain light-resistant and waterproof water-based polyurethane coatings and adhesives.

example 2

[0022] (1) Add 0.46g of dibutyltin dilaurate to a 500ml three-necked bottle with a stirring bar and a thermometer, mix 30g of polytetrahydrofuran ether glycol with 114g of isophorone diisocyanate, and react at 90°C for 5 hours to obtain polyurethane Prepolymer A143.6g, the molecular weight of the polytetrahydrofuran ether glycol is 2000g / mol;

[0023] (2) Add 5.17g of dimethylolbutyric acid and 35.9g of acetone to polyurethane prepolymer A, react at 90°C for 4h, add 25.8g of triethylamine at 90°C for neutralization reaction for 60min, add resveratrol 2.87g, diethyl dithiophosphate 1.43g, sodium methyl silicate 1.43g and sorbitol 0.57g, react at 80°C for 1h, add water 120g, sodium dodecylsulfonate 0.72g and nitrilotriacetic acid tri Sodium 0.29g, emulsified at 80°C for 60 minutes to obtain light-resistant and waterproof water-based polyurethane coatings and adhesives.

example 3

[0025] (1) Add 0.32g of dibutyltin dilaurate to a 500ml three-necked bottle with a stirring bar and a thermometer, mix 40g of polytetrahydrofuran ether glycol with 106g of isophorone diisocyanate, and react at 80°C for 3 hours to obtain polyurethane Prepolymer A145.6g, the molecular weight of the polytetrahydrofuran ether glycol is 2000g / mol;

[0026] (2) Add 3.3g of dimethylol propionic acid and 31.3g of acetone solvent to the polyurethane prepolymer A, react at 80°C for 3h, add 20.4g of triethylamine at 80°C for neutralization reaction for 45min, add white quinoa 2.9g revertyl alcohol, 1.45g triisopropyl phosphite, 1.45g potassium methyl silicate and 0.58g sorbitol, react at 80°C for 1h, add water 130g, sodium dodecylsulfonate 0.5g and nitrilotriacetic acid Trisodium 0.2g was emulsified at 80°C for 60 minutes to obtain light-resistant and waterproof water-based polyurethane coatings and adhesives.

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Abstract

The invention discloses a preparation method of light-resistant and waterproof waterborne polyurethane paint. The preparation method includes: with existence of dibutyltin dilaurate, mixing polytetrahydrofuran glycol with isophorone diisocyanate to obtain polyurethane prepolymer A; adding chain extender and acetone solvent into the prepolymer A, adding triethylamine for neutralizing, adding resveratrol, substance B, substance C and sorbitol, reacting for 1h, and adding water, sodium dodecyl sulfate and nitrilotriacetic acid trisodium salt for emulsion for 60min to obtain the light-resistant and waterproof waterborne polyurethane paint. The light-resistant and waterproof waterborne polyurethane paint is environment friendly and low in cost, can be widely applied to surfaces of walls, furniture and metal utensils and can serve as a binder for plastic, glass, papermaking and spinning.

Description

technical field [0001] The invention relates to a preparation method of a polyurethane coating, in particular to a preparation method of a light-resistant and waterproof water-based polyurethane coating and an adhesive. 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 poly...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09J175/08C09J11/06C09J11/04C08G18/66C08G18/48C08G18/10C08G18/24
Inventor 朱蕾
Owner 朱蕾