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Anion-nonionic waterborne polyurethane dispersion as well as preparation method and application thereof

A water-based polyurethane and non-ionic technology, applied in the direction of polyurea/polyurethane coating, polyurea/polyurethane adhesive, adhesive type, etc., can solve the problems of content increase, increase solid content limit, poor operability, etc., and achieve good Composite, high peel strength effect

Active Publication Date: 2017-10-24
中科华宇(福建)科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the published work CN2010102895253, a water-based polyurethane-urea dispersion containing non-ionic hydrophilic groups in the main chain was prepared, but as the content of non-ionic groups increased, the viscosity of the dispersion increased significantly, and the operability was poor. Content is restricted

Method used

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  • Anion-nonionic waterborne polyurethane dispersion as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Add 18.01g of PBA2000, 21.02g of PBA3000, 1.06g of PEG1500 (polyethylene glycol) with a number average molecular weight of 1500 into a three-necked flask equipped with an airway, a stirrer and a thermometer, vacuum dehydrate, cool to below 70°C, and add 2.67g of HDI (hexamethylene diisocyanate) and 1.51gIPDI (isophorone diisocyanate), about 0.1g of organic bismuth catalyst, 80-90 ℃ heat preservation reaction until NCO% is less than or equal to the theoretical value, to obtain a translucent viscous liquid, cooled to Below 80°C, replace the gas guide device with a reflux device, add about 80ml of acetone, and after the material is uniform, add a mixed solution of 1.16g of AAS (50% aqueous solution) and 1.21g of water, and keep warm at 40-50°C for reaction After 20 minutes, add about 39ml of water under vigorous stirring to obtain a blue-light translucent emulsion, stir for 5 minutes, add a mixed solution of 0.08g of ethylenediamine and 3ml of water, react at 38°C-50°C for ...

Embodiment 2

[0071] Add 18.02g PBA2000, 18.03g PBA3000, 2.00g N56 (polyneopentyl adipate diol, number average molecular weight 2000g / mol), 1.05g PEG1500 (polyethylene glycol) with number average molecular weight 1500 , a three-necked flask with a stirrer and a thermometer, vacuum dehydrated, cooled to below 70°C, added 2.27g HDI (hexamethylene diisocyanate) and 2.00g IPDI (isophorone diisocyanate), about 0.1g of organic bismuth catalyst, Keep warm at 80-90°C until the NCO% is less than or equal to the theoretical value to obtain a translucent viscous liquid, cool it below 80°C, replace the gas guide device with a reflux device, add about 80ml of acetone, and wait until the material is uniform, add A mixed solution of 1.15g AAS (50% aqueous solution) and 1.36g water was incubated at 40-50°C for 20 minutes, and about 48ml of water was added under vigorous stirring to obtain a blue-light translucent emulsion. After stirring for 5 minutes, 0.11g of ethylenediamine and A mixed solution of 4ml o...

Embodiment 3

[0073] Add 16.01g of PBA2000, 18.01g of PBA3000, 4.02g of N56, and 1.06g of PEG1500 (polyethylene glycol) with a number average molecular weight of 1500 into a three-necked flask equipped with an airway tube, a stirrer and a thermometer, vacuum dehydrate, cool to below 70°C, and add 2.27g HDI (hexamethylene diisocyanate) and 2.00g IPDI (isophorone diisocyanate), organic bismuth catalyst about 0.1g, 80-90 ℃ heat preservation reaction 3 until NCO% is less than or equal to the theoretical value, translucent and viscous Liquid, cooled to below 80°C, replace the gas guide device with a reflux device, add about 80ml of acetone, and after the material is uniform, add a mixed solution of 1.16g AAS (50% aqueous solution) and 1.32g water, Insulate and react at 50°C for 20 minutes, add about 48ml of water under vigorous stirring to obtain a blue light translucent emulsion, stir for 5min, add a mixed solution of 0.11g of ethylenediamine and 4ml of water, react at 38°C-50°C for 20min, and r...

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Abstract

The invention relates to a waterborne polyurethane dispersion with an anion-nonionic waterborne hydrophilic group, as well as a preparation method and application thereof. The dispersion comprises the following raw materials: a, one or more polyhydroxy compounds with a number-average molecular weight of 2000-6000 g / mol, and b, one or more polyhydroxy compounds with a number-average molecular weight of 1000-5000 g / mol, wherein the number-average molecular weight of the component b is at least 1000 g / mol less than that of the component a. The waterborne polyurethane dispersion provided by the invention is high in solid content (greater than or equal to 45%) and high early-stage peeling strength, and requirements of shoe adhesive production lines can be met.

Description

technical field [0001] The invention relates to a waterborne polyurethane dispersion with high solid content, which is a self-emulsifying waterborne polyurethane dispersion containing anionic and nonionic hydrophilic groups, and belongs to the fields of adhesives, fabric coatings and the like. Background technique [0002] Polyurethane has a good bonding effect with materials containing active hydrogen because of its strong polar carbamate group, and can be used as an adhesive for materials such as wood, leather, fabric, paper, metal, glass, rubber, and plastic. Polyurethane adhesives have the characteristics of good toughness and low temperature resistance, and are one of the fastest-growing varieties in the field of adhesives. In addition, based on environmental protection requirements and legal regulations, water-based polyurethane adhesives are favored by people. For example, water-based polyurethane adhesives for shoes have been widely used. [0003] The non-ionic hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/73C08G18/75C08G18/66C08G18/48C08G18/42C08G18/12C09J175/06C09J175/08C09D175/06C09D175/08
CPCC08G18/12C08G18/4018C08G18/4238C08G18/4833C08G18/722C08G18/73C08G18/755C08G2170/80C08G2170/90C09D175/06C09D175/08C09J175/06C09J175/08C08G18/3857C08G18/3228
Inventor 龚翠然夏建荣罗震王松闫春凤
Owner 中科华宇(福建)科技发展有限公司
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