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High-cohesive-force waterborne polyurethane adhesive

A technology of water-based polyurethane and high cohesion, which is applied in the direction of non-polymer adhesive additives, unsaturated alcohol copolymer adhesives, adhesive types, etc., and can solve high temperature resistance, water resistance and outdoor aging resistance Poor and other problems, to achieve the effect of good water resistance and high temperature resistance, strong adhesion, and improve product quality

Inactive Publication Date: 2017-05-17
张炎斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a water-based polyurethane adhesive with high cohesive force, which solves the technical problems of poor high temperature resistance, water resistance and outdoor aging resistance in the prior art. The cohesive force is strong and meets the production requirements. need

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A water-based polyurethane adhesive with high cohesive force is prepared by blending a water-resistant composition and a water-based polyurethane emulsion. The preparation method of the water-based polyurethane emulsion is to mix a hydroxyl monomer and a hydrophilic chain extender and heat up to 145°C, dehydration, after 15min, cool down to 50°C, add metered isocyanate monomer, raise the temperature to 80°C, keep warm for 2h; the hydroxyl monomer is polyether polyol, polyester polyol or both mixture; the hydrophilic chain extender is a small molecular polyol containing carboxyl, sulfonic acid group or sulfonate group, and its mass accounts for the total amount of isocyanate monomer, hydroxyl monomer, and hydrophilic chain extender. 10.5% of the mass; the isocyanate monomer is aromatic polyisocyanate, aliphatic polyisocyanate or alicyclic polyisocyanate, wherein the control R 1 The value is 1.2;

[0020] The preparation method of the water-resistant composition comprise...

Embodiment 2

[0028]A water-based polyurethane adhesive with high cohesive force is prepared by blending a water-resistant composition and a water-based polyurethane emulsion. The preparation method of the water-based polyurethane emulsion is to mix a hydroxyl monomer and a hydrophilic chain extender and heat up to Dehydration at 147°C, after 18 minutes, cool down to 60°C, add metered isocyanate monomer, raise the temperature to 85°C, and keep warm for 2.3h; the hydroxyl monomer is polyether polyol, polyester polyol or both The mixture; the hydrophilic chain extender is a small molecular polyol containing carboxyl, sulfonic acid group or sulfonate group, and its mass accounts for three 11.5% of the total mass; the isocyanate monomer is aromatic polyisocyanate, aliphatic polyisocyanate or alicyclic polyisocyanate, wherein the control R 1 The value is 1.4;

[0029] The preparation method of the water-resistant composition comprises the following steps, a, taking 10 parts of taro powder, 0.8 ...

Embodiment 3

[0037] A water-based polyurethane adhesive with high cohesive force is prepared by blending a water-resistant composition and a water-based polyurethane emulsion. The preparation method of the water-based polyurethane emulsion is to mix a hydroxyl monomer and a hydrophilic chain extender and heat up to 150°C, dehydration, after 20min, cool down to 70°C, add metered isocyanate monomer, heat up to 90°C, keep warm for 2.5h; the hydroxyl monomer is polyether polyol, polyester polyol or both The mixture; the hydrophilic chain extender is a small molecular polyol containing carboxyl, sulfonic acid group or sulfonate group, and its mass accounts for three 12.5% ​​of the total mass; the isocyanate monomer is aromatic polyisocyanate, aliphatic polyisocyanate or alicyclic polyisocyanate, wherein the control R 1 The value is 1.8;

[0038] The preparation method of the water-resistant composition comprises the following steps, a, taking 15 parts of taro flour, 1 part of pentasodium dieth...

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PUM

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Abstract

High-cohesive-force waterborne polyurethane adhesive is prepared by blending a water-tolerant composition and waterborne polyurethane emulsion. The preparation method of the waterborne polyurethane emulsion comprises the steps: mixing and heating a hydroxyl monomer and a hydrophilic chain-extending agent, dehydrating and cooling; adding an isocyanate monomer, heating and preserving heat, wherein the hydroxyl monomer is polyether polyol, polyester polyol or a mixture of the polyether polyol and the polyester polyol; the hydrophilic chain-extending agent is small molecular polylasic alcohol containing carboxyl and sulfonic acid group or sulfonate group and accounts for 10.5 to 12.5 percent of the total mass of the isocyanate monomer, the hydroxyl monomer and the hydrophilic chain-extending agent; the isocyanate monomer is aomatic polyisocyanate, fatty polyisocyanate or cycloaliphatic polyisocyanate and the value of R1 is 1.2 to 1.8. The high-cohesive-force waterborne polyurethane adhesive solves the technical problems of low high-temperature resistance, water tolerance and outdoor ageing resistance in the prior art, has high adhesive property and meets production requirements.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a water-based polyurethane adhesive with high cohesive force. Background technique [0002] Water-based polyurethane adhesives are an important category of water-based adhesives, which have excellent properties of polyurethane materials. Water-based polyurethane adhesives contain isocyanate groups and urethane groups with strong polarity and high chemical activity, so that they have excellent chemical adhesion, do not pollute the environment, and have wider and wider application fields and uses. However, its high temperature resistance, water resistance and outdoor aging resistance are poor, which leads to degumming of products using water-based polyurethane adhesives, which cannot meet the needs of improving product quality. Therefore, existing water-based polyurethane adhesives need to be improved. Improve to meet needs. Contents of the invention [0003] The purp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J175/06C09J129/04C09J103/02C09J11/04C09J11/06C08G18/48C08G18/42C08G18/10C08G18/66C08G18/32
CPCC09J175/08C08G18/10C08G18/42C08G18/48C08G18/664C08G18/6644C08G18/6651C08G18/6659C08G18/6674C08G18/6677C08G18/6685C08G18/6692C08L2201/08C08L2205/03C09J11/04C09J11/06C09J175/06C08L3/02C08L29/04C08K13/06C08K5/17C08K2003/221C08K5/098C08K9/04C08K3/346C08G18/3206C08G18/3228
Inventor 张炎斌魏风军郝会霞李亚超李东海闫新亮董豪杰
Owner 张炎斌
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