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A kind of organosilicon modified waterborne polyurethane resin and preparation method thereof

A water-based polyurethane and silicone technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of adhesion, anti-fouling resistance, yellowing resistance and flexibility that do not meet the standards, and achieve excellent anti-fouling, The effect of strong adhesion

Active Publication Date: 2015-09-02
江苏巨珩新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These excellent properties will make silicone-modified water-based polyurethane resins widely used in paints, coatings, leather finishing agents, fabric finishing agents, etc., but the existing silicone-modified water-based polyurethane resins are not suitable for PVC floor, because the existing silicone-modified water-based polyurethane resin is used for PVC floor, its adhesion, stain resistance, yellowing resistance and flexibility are not up to the standard

Method used

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  • A kind of organosilicon modified waterborne polyurethane resin and preparation method thereof
  • A kind of organosilicon modified waterborne polyurethane resin and preparation method thereof

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Experimental program
Comparison scheme
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Embodiment 1

[0039] Table 1 Preparation of organic silicon modified waterborne polyurethane resin raw material composition

[0040]

[0041] The specific preparation method is as follows: put 15 grams of neopentyl glycol and 5 grams of polyoxypropylene glycol into a 500ml four-necked flask equipped with stirring, a condenser and a thermometer, and carry out vacuum dehydration; g toluene diisocyanate, the dropwise addition time is 2 hours; after the dropwise addition, 3 g of 1,4-butanediol and 2 g of dimethylolpropionic acid are continued to be added dropwise, the dropwise addition time is 2 to 3 hours, while slowly and evenly dripping Add 0.05 g of dibutyltin dilaurate; after the dropwise addition, continue to add 5 g of hydroxyethyl acrylate dropwise for 4 hours; drop the temperature to 45°C, add dropwise 4 g of amino-modified polyorganosiloxane, dropwise The addition time is 30 minutes; after the dropwise addition is completed, 55.95 grams of deionized water is added to emulsify and d...

Embodiment 2

[0043] Table 2 Preparation of organic silicon modified waterborne polyurethane resin raw material composition

[0044]

[0045] The specific preparation method is as follows: put 8 grams of neopentyl glycol, 5 grams of polyoxypropylene glycol and 5 grams of 1,4-adipic acid into a 500ml four-necked flask equipped with a stirrer, a condenser and a thermometer, and carry out vacuum dehydration. ; heated to 55 ℃, drip 8 grams of 1,6-hexanediisocyanate, the dripping time is 2 hours; continue to drip 2 grams of trimethylolpropane and 4 grams of dimethylol propionic acid after the dripping is completed, The dropping time is 2 to 3 hours, and 0.08 g of dibutyltin dilaurate is slowly and evenly added dropwise; after the dropping is completed, 4 g of hydroxyethyl acrylate are continued to be added dropwise, and the dropping time is 4 hours; Add 5 grams of amino-modified polyorganosiloxane, and the dripping time is 30 minutes; after the dripping is completed, add 58.92 grams of deio...

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Abstract

The invention relates to an organosilicon modified waterborne polyurethane resin and a preparation method thereof. The organosilicon modified waterborne polyurethane resin comprises, by mass, 15%-20% of polyhydric alcohol, 8%-10% of isocyanate, 2%-5% of hydrophilic groups, 2%-5% of silicone oil, 0.05%-0.1% of a catalyst, 1%-3% of a chain extender, 2%-5% of dead-end monomers and 55%-60% of a solvent. The organosilicon modified waterborne polyurethane resin used for the PVC floors is firstly reported in China. The organosilicon modified waterborne polyurethane resin has relatively strong adhesive force, excellent stain resistance, yellowing resistance, impact resistance, abrasion resistance and flexibility when being used for the PVC floors .

Description

Technical field: [0001] The invention relates to an organic silicon modified water-based polyurethane resin and a preparation method thereof. technical background: [0002] Waterborne polyurethane resin is widely used in textile printing and dyeing, leather processing, adhesives, furniture paint, electrophoretic paint, etc. However, the single water-based polyurethane has poor high temperature resistance and poor water resistance, which limits its popularization and application. In order to solve these problems, it needs to be modified. [0003] Silicone modified waterborne polyurethane resin is a polymer with water as the main dispersion medium. It has the advantages of good mechanical properties, high bonding strength, good flexibility, non-combustibility, no pollution, and easy processing. It is a green and environmentally friendly material. has been widely used. The waterborne polyurethane resin modified by silicone has excellent properties such as good low temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/73C08G18/67C08G18/66C08G18/61C08G18/48C08G18/32C08G18/34C08G18/24C09D175/14
Inventor 许岚曹朋成
Owner 江苏巨珩新材料科技有限公司