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Modified waterborne polyurethane resin for safety gloves, as well as preparation method thereof

A technology of water-based polyurethane and labor protection gloves, applied in the chemical field, can solve the problems of poor wear resistance, anti-adhesion and bonding strength, achieve storage stability and good hydrolysis resistance, improve wear resistance and weather resistance, Feel good effect

Inactive Publication Date: 2015-04-01
SHANGHAI HUIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a modified water-based polyurethane resin for labor protection gloves, so as to solve the problems of poor wear resistance, anti-adhesiveness and bonding strength of water-based polyurethane for labor protection gloves at present.

Method used

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  • Modified waterborne polyurethane resin for safety gloves, as well as preparation method thereof
  • Modified waterborne polyurethane resin for safety gloves, as well as preparation method thereof
  • Modified waterborne polyurethane resin for safety gloves, as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]

[0031]

[0032] Put 250kg of polybutylene adipate diol and 74.35kg of isophorone diisocyanate into the reaction kettle, raise the temperature to 80-85°C, and react for 2-3 hours to reach the theoretical isocyanate content, then cool down the reaction system to Add 12.64kg of 2,2-dimethylolpropionic acid at 70~80℃, react until the theoretical isocyanate content is 2.87%, cool down the reaction system below 50℃, add 7.87kg of triethylamine for neutralization, and cool down to below 40℃ A polyurethane prepolymer is obtained. Put 527.66kg of deionized water into the emulsification tank, add 344.86kg of the synthesized prepolymer at a dispersion speed of 1000~1200r / min, add 6.92kg of anhydrous ethylenediamine and the residual isocyanate in the system after emulsification for 40~60min Cyanate reacted, and obtained water-based polyurethane emulsion after reacting for 30 minutes.

[0033] Then add 293.14kg of water-based acrylic acid, 58.63kg of ultra-fine spherical si...

Embodiment 2

[0035]

[0036]

[0037] Put 200kg of polybutylene adipate diol and 64.86kg of isophorone diisocyanate into the reaction kettle, raise the temperature to 80-85°C, react for 2-3 hours to reach the theoretical isocyanate content, then cool down the reaction system Add 11.03kg of 2,2-dimethylolpropionic acid to 70-80°C, react until the theoretical isocyanate content is 3.33%, cool the reaction system below 50°C, add 7.08kg of triethylamine for neutralization, and cool down to 40°C The polyurethane prepolymer was obtained as follows. Put 592.27kg of deionized water into the emulsification tank, add 282.97kg of the synthesized prepolymer at a dispersion speed of 1000~1200r / min, add 6.58kg of anhydrous ethylenediamine and the residual isocyanate in the system after emulsification for 40~60min Cyanate reacted, and obtained water-based polyurethane emulsion after reacting for 30 minutes.

[0038] Then add 592.27kg of water-based acrylic acid, 197.42kg of ultra-fine spherical si...

Embodiment 3

[0040]

[0041] Put 200kg of polybutylene adipate diol and 54.43kg of isophorone diisocyanate into the reaction kettle, raise the temperature to 80-85°C, and react for 2-3 hours to reach the theoretical isocyanate content, then cool the reaction system to Add 9.23kg of 2,2-dimethylolpropionic acid at 70~80℃, the reaction reaches a theoretical isocyanate content of 2.42%, the temperature of the reaction system is lowered to below 50℃, neutralized by adding 5.92kg of triethylamine, and the temperature is lowered to below 40℃ A polyurethane prepolymer is obtained. Put 509.14kg of deionized water into the emulsification tank, add 269.58kg of the synthesized prepolymer at a dispersion speed of 1000~1200r / min, add 4.57kg of anhydrous ethylenediamine and the residual isocyanate in the system after emulsification for 40~60min Cyanate reacted, and obtained water-based polyurethane emulsion after reacting for 30 minutes.

[0042] Then add 261.10kg of water-based acrylic acid, 52.22k...

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Abstract

The invention provides modified waterborne polyurethane resin for safety gloves, as well as a preparation method thereof. The preparation method of the modified waterborne polyurethane comprises the following steps: polyester polyol, isophorone diisocyanate, and 2,2-dimethylol propionic acid serve as raw materials to prepare a prepolymer, triethylamine is added for salification through neutral reaction, water is then added for emulsification, and ethanediamine is then added to react with residual isocyanato in the system, so as to obtain waterborne polyurethane emulsion; waterborne acrylic acid, spherical silica powders and modified wax emulsion are then added to the obtained waterborne polyurethane emulsion which serves as a matrix, and uniform mixing is carried out, so as to obtain the modified waterborne polyurethane resin for the safety gloves. The safety gloves made from the obtained modified waterborne polyurethane have the characteristics of good handfeel, as well as high comfort, abrasion resistance, stick resistance and environmental friendliness.

Description

technical field [0001] The invention belongs to the field of chemical technology, and relates to a modified water-based polyurethane resin for labor protection gloves and a preparation method thereof. Background technique [0002] The polyurethane labor protection gloves currently on the market are mainly made by impregnating the glove core with solvent-based polyurethane. This glove has the characteristics of high strength, good wear resistance, good elasticity and hand feeling, and comfortable wearing. Since most solvent-based polyurethanes used in gloves currently use N,N-dimethylformamide (DMF) as a solvent, the residual DMF in the glove production process and finished gloves will cause harm to the human body. With the improvement of environmental protection requirements in all countries in the world, the hazard of DMF has become the focus of the polyurethane glove industry. [0003] In order to solve the harm of DMF in the existing solvent-based polyurethane to the hu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L33/00C08L23/30C08G18/75C08G18/66C08G18/42C08G18/34C08G18/12
Inventor 钱建中钱洪祥陈桂莲李善善颜静陈茜伦
Owner SHANGHAI HUIDE TECH CO LTD
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