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Preparation method and application of hyperbranched polyurethane acrylate interpenetrating polymer network waterproof agent

A polyacrylate, interpenetrating network structure technology, applied in the field of textile printing, dyeing and finishing, can solve the problems of poor washing resistance of textiles and short duration of waterproof performance of textiles, and achieves low cost, excellent waterproof performance, and film-forming properties. Good results

Inactive Publication Date: 2015-11-18
DYMATIC CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the current alternatives, the waterproofing agent made of the new 6-C fluorosurfactant raw material is the best alternative product, but there are still problems such as economy and overall function.
[0007] At present, most of the finishing methods of waterproofing agents use finishing agents to impregnate textiles. The textiles finished by this method have poor washability and the waterproof performance of textiles lasts for a short time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of water-based polyurethane prepolymer: Weigh 100 grams of polyoxypropylene diol N210 in a four-necked flask, heat it to 110°C, treat it at a vacuum of -0.098MPa for 100 minutes, add 44.46 grams of IPDI, and React at 70°C for 4 hours, lower the temperature of the reaction system to between 40°C and 50°C, add 8.93 g of N-methyldiethanolamine evenly with a dropping funnel within 30 minutes, keep the reaction temperature at 40°C to 50°C, and react for 30 minutes , add 1.3 grams of hydroxyethyl methacrylate and 1.04 grams of phenol to carry out partial capping reaction, and react at 60 ° C for 1.5 hours to obtain a water-based polyurethane prepolymer;

[0033] (2) Preparation of hyperbranched waterborne polyurethane prepolymer: add 3.27 g of hyperbranched polyester BoltornH20 to the polyurethane prepolymer prepared in the above step (1), and react at 75°C for 2 hours to obtain a hyperbranched waterborne polyurethane prepolymer;

[0034] (3) Preparation of hy...

Embodiment 2

[0037](1) Preparation of water-based polyurethane prepolymer: Weigh 200 grams of polybutylene adipate diol (PBA) with a molecular weight of 2000 in a four-necked flask, and heat it to 110°C, at a vacuum of -0.098MPa Treat at low temperature for 100min, add 33.64g of HDI, react at 55°C for 5 hours, cool down the reaction system to between 40°C and 50°C, and add 12.09g of N-butyldiethanolamine evenly with a dropping funnel within 30min to keep the reaction The temperature is 40°C~50°C, react for 30min, add 1.01g of methylolacrylamide and 0.73g of acetone oxime for partial capping reaction, and react at 60°C for 1.5 hours to obtain a waterborne polyurethane prepolymer;

[0038] (2) Preparation of hyperbranched waterborne polyurethane prepolymer: Add 3.43 g of hyperbranched polyester BoltornH30 to the polyurethane prepolymer prepared in the above step (1), and react at 75°C for 2 hours to obtain a hyperbranched waterborne polyurethane prepolymer;

[0039] (3) Preparation of hyperb...

Embodiment 3

[0042] (1) Preparation of water-based polyurethane prepolymer: Weigh 100 grams of polytetrahydrofuran glycol (PTMEG) with a molecular weight of 1000 in a four-neck flask, heat it to 110°C, and treat it under a vacuum of -0.098MPa for 100min, add 31.32 gram of TDI, reacted at 60°C for 2.5 hours, cooled the reaction system to between 40°C and 50°C, added 5.95 g of N-methyldiethanolamine evenly with a dropping funnel within 30 minutes, and kept the reaction temperature between 40°C and 50°C ℃, reacted for 30 minutes, added 2.16 grams of hydroxypropyl methacrylate and 1.3 grams of butanone oxime to carry out a partial capping reaction, and reacted at 50 degrees Celsius for 3 hours to obtain a water-based polyurethane prepolymer;

[0043] (2) Preparation of hyperbranched waterborne polyurethane prepolymer: Add 3.37 g of hyperbranched polyester BoltornH40 to the polyurethane prepolymer prepared in the above step (1), and react at 95°C for 0.5 hours to obtain a hyperbranched waterborn...

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Abstract

The invention provides a preparation method of a hyperbranched polyurethane acrylate interpenetrating polymer network waterproof agent. The method comprises the following steps: (1), synthetizing a waterborne polyurethane prepolymer with ends partially capped; (2), introducing hydroxyl-terminated hyperbranched polyester, and grafting by virtue of reaction between isocyanate in the waterborne polyurethane prepolymer and the hydroxyl of the hyperbranched polyester, thereby obtaining a hyperbranched waterborne polyurethane prepolymer; (3), adding part of ethenyl monomers and a neutralizing agent, salifying, and adding deionized water while stirring at a high speed so as to realize dispersion, thereby obtaining a hyperbranched waterborne polyurethane emulsion; and (4), dropwise adding residual ethenyl monomers and an initiator into the hyperbranched waterborne polyurethane emulsion, thereby obtaining a hyperbranched waterborne polyurethane / acrylate interpenetrating network structure emulsion. The emulsion has excellent waterproof performance, good washable and abrasion-resistant performances and does not contain PFOA and PFOS. The hyperbranched structure has a self-recovery function, is capable of realizing self repairing of damaged regions and is long in waterproof performance duration time.

Description

technical field [0001] The invention belongs to the field of textile printing and dyeing processing and finishing, and in particular relates to a preparation method of a hyperbranched polyurethane / polyacrylate interpenetrating network structure waterproofing agent, a fabric using the waterproofing agent, and an application method. Background technique [0002] With the improvement of people's living standards, the requirements for the performance of textiles are also getting higher and higher. After the textile fabric without waterproof treatment absorbs water and sweat, the water and sweat penetrate into the back of the fabric, affecting the appearance and comfort of the fabric, which limits its application in daily life and in special climates and special environments such as rainy days, summer days, high temperatures, and the wild. . [0003] Polyurethane is a block polymer composed of soft segments and hard segments. It has a large number of hydrogen bonds and a certain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/568D06M15/263D06M15/277C08G18/42C08G18/48C08G18/66C08G18/75C08G18/76C08F220/14C08F220/18C08F220/22
Inventor 杨成华郭玉良徐龙鹤刘军鲍亮陈祖芬
Owner DYMATIC CHEM
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