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Water-pressure-resistant waterborne polyurethane resin

A technology of polyurethane resin and water pressure, which is applied in the field of polyurethane resin preparation, can solve the problems of short service life, poor water pressure resistance, and poor corrosion resistance of synthetic materials, and achieve improved water pressure resistance, water resistance, and stretch resistance. The effect of strength improvement

Inactive Publication Date: 2020-01-14
东莞市米儿塑胶原料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the presence of a large number of hydrophilic groups and low molecular weight in the polyurethane resin, the corrosion resistance is poor compared with the same type of solvent resin, and the poor water pressure resistance of the polyurethane resin easily leads to its low tensile strength. Resulting in short service life of synthetic materials

Method used

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] A water pressure-resistant water-based polyurethane resin, raw materials include polyol, polyisocyanate, hydrophilic carboxylic acid chain extender, polycarbonate diol, dimer ester diol, first neutralizer, second neutralizer Agent, acetone and stabilizer, the specific preparation method adopts the following steps: Step 1: Add polyol, polyisocyanate, hydrophilic carboxylic acid chain extender into the reaction vessel, evacuate the reaction system to vacuum, and then fill it with Nitrogen, carry out vacuum reaction; step 2: start stirring to mix the solvent inside the reaction vessel, and diss...

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Abstract

The invention discloses water-pressure-resistant waterborne polyurethane resin. The water-pressure-resistant waterborne polyurethane resin comprises the following raw materials: polyol, polyisocyanate, a hydrophilic carboxylic acid chain extender, polycarbonate diol, dimer acid ester diol, a first neutralizer, a second neutralizer, acetone and a stabilizer. According to the invention, polycarbonate diol and dimer acid ester diol are added as raw materials, so the tensile strength and the water pressure resistance of the synthesized polyurethane resin are improved; and the first neutralizer andthe second neutralizer are added in the synthesis of the raw materials through an acetone method, so a neutralization degree in the synthesis is increased, and the water resistance of the prepared polyurethane resin is greatly improved.

Description

technical field [0001] The invention relates to the field of polyurethane resin preparation, in particular to a water pressure-resistant water-based polyurethane resin. Background technique [0002] Polyurethane is a new type of synthetic material. Due to its special molecular structure, it combines the high elasticity of rubber and the high strength of plastic. Therefore, it has developed rapidly in recent decades in terms of application range and usage quantity. Polyurethane synthetic leather has soft luster, natural, soft touch, and strong leather-feeling appearance. It has excellent adhesion to the substrate, anti-wear, flex resistance, anti-aging, anti-mold and other excellent properties. It also has cold resistance. It is the most ideal substitute for natural leather, and is widely used in clothing, shoemaking, bags, furniture, sports and other industries. [0003] However, due to the presence of a large number of hydrophilic groups and low molecular weight in the pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/12C08G18/42C08G18/44C08G18/34C08G18/08
CPCC08G18/0823C08G18/12C08G18/42C08G18/4202C08G18/44C08G18/6659C08G18/348
Inventor 贺平
Owner 东莞市米儿塑胶原料有限公司
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