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Waterproof and moisture-permeable waterborne polyurethane resin as well as preparation method and application thereof

A water-based polyurethane, waterproof and moisture-permeable technology, applied in textiles and papermaking, etc., can solve the problems of low solid content of water-based polyurethane dispersion, increase process complexity, increase cost, etc.

Active Publication Date: 2021-07-02
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solid content of the water-based polyurethane dispersion is also low. When using the water-based polyurethane dispersion to form a film, it is necessary to add a thickener to adjust to high-viscosity construction, which not only increases the cost but also increases the complexity of the process.

Method used

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  • Waterproof and moisture-permeable waterborne polyurethane resin as well as preparation method and application thereof
  • Waterproof and moisture-permeable waterborne polyurethane resin as well as preparation method and application thereof
  • Waterproof and moisture-permeable waterborne polyurethane resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] 500.00 grams of HMS-295R, 26.00 grams F3156D, 14.00 grams of DEG and 4.00 grams of DMPA were heated to 60°C and stirred evenly, then added 97.00 grams IPDI, finally add 32.06 g of acetone and 0.20 g of 8108 catalyst, raise the temperature to 75°C and react for 4 hours to form a prepolymer with isocyanate groups at the end. After adding 896.50 g of water and mixing well, a solution of 5.50 g of EDA, 3.20 g of DEA with 0.80 g of APBA and 47.50 g of water was metered in. After stirring for 20 minutes, an aqueous polyurethane resin solution was obtained.

Embodiment 2

[0083] 360.00 grams of HMS-295R, 64.00 grams Heat F3156D, 29.00 grams of DEG and 26.00 grams of DMPA to 60°C and stir to mix well, then add 160.00 grams IPDI, finally add 31.96 g of acetone and 0.16 g of 8108 catalyst, raise the temperature to 75°C and react for 4 hours to form a prepolymer with isocyanate groups at the end. After adding 893.60 g of water and mixing well, a solution of 5.50 g of EDA, 3.00 g of DEA with 1.00 g of APBA and 47.50 g of water was metered in. After stirring for 20 minutes, an aqueous polyurethane resin solution was obtained.

Embodiment 3

[0085] 470.00 grams of HMS-295R, 40.00 grams Heat F3156D, 12.50 grams of DEG and 11.00 grams of DMPA to 60°C and stir to mix well, then add 105.00 grams IPDI, finally add 31.93 g of acetone and 0.19 g of 8108 catalyst, raise the temperature to 75°C and react for 4 hours to form a prepolymer with isocyanate groups at the end. After adding 895.30 g of water and mixing well, a solution of 5.50 g of EDA, 2.30 g of DEA with 1.00 g of APBA and 44.00 g of water was metered in. After stirring for 20 minutes, an aqueous polyurethane resin solution was obtained.

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Abstract

The invention relates to waterproof and moisture-permeable waterborne polyurethane resin as well as a preparation method and application thereof. The waterborne polyurethane resin is prepared from the following components through reaction: A) polyisocyanate, B) polyether polyol, C) an amino compound, D) dihydroxy carboxylic acid and E) micromolecular dihydric alcohol. The waterborne polyurethane resin provided by the invention is a water-soluble polyurethane resin, and has the advantages of simple synthesis process, convenience in construction, better film formation and higher water vapor permeability; and the phenylboronic acid unit contained in the polyurethane polymer structure enables the waterproof moisture-permeable adhesive to have good adhesion, high hydrostatic pressure value and washing resistance on the surface of a cloth base material.

Description

technical field [0001] The invention relates to the field of water-based polyurethane resin for coated waterproof and moisture-permeable fabrics, in particular to a waterproof and moisture-permeable water-based polyurethane resin, its preparation method and application. Background technique [0002] Waterproof Breathable Fabrics (WBFs for short) is a functional fabric that can make the water vapor formed by the sweat evaporated from the human body pass through, and the external liquid water is difficult to pass through the fabric. It is both waterproof and moisture-permeable. And it makes the human body feel comfortable, and is widely used in the fields of outdoor clothing, tents and shoes and bags. [0003] Waterproof and moisture-permeable fabrics generally include coated waterproof and moisture-permeable fabrics, laminated composite waterproof and moisture-permeable fabrics, and micro / porous structure waterproof and moisture-permeable fabrics. The construction of laminat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/34C08G18/32C08G18/12D06N3/14
CPCC08G18/6692C08G18/4837C08G18/348C08G18/3206C08G18/3228C08G18/3275C08G18/12D06N3/14D06N2209/128D06N2209/1664
Inventor 韩克于丽王少鹏孙少文纪学顺晋云全王震周操
Owner WANHUA CHEM GRP CO LTD
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