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A kind of waterborne polyurethane surface layer resin and preparation method thereof

A water-based polyurethane and surface layer resin technology, applied in coatings, textiles and papermaking, etc., can solve problems such as difficulty in combining with solvent-free two-component adhesives, improve adhesion fastness, increase bridging effect, and increase drying speed. Effect

Active Publication Date: 2021-11-12
JIAXING HEXIN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of water-based polyurethane surface layer resin and preparation method thereof, namely a kind of water-based polyurethane surface layer resin and preparation method thereof with good adhesion to solvent-free two-component adhesive, to improve existing water-based polyurethane resin and non-solvent Difficulties in combining solvent two-component adhesives

Method used

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  • A kind of waterborne polyurethane surface layer resin and preparation method thereof
  • A kind of waterborne polyurethane surface layer resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A water-based polyurethane surface layer resin that adheres well to solvent-free two-component adhesives. It is composed of the following components: 10-30 parts of polymerized polyol, 0-5 parts of polyether modified silicone oil, and self-made sulfonate type 0-5 parts of polyol, 10-30 parts of isocyanate, 0.1-2 parts of small molecule polyol, 1-5 parts of hydrophilic chain extender, 0.1-1 part of small molecule terminal amino compound, 40-60 parts of deionized water, 1-3 parts of self-made closed hydrophilic modified polyisocyanate cross-linking agent, 1-5 parts of pH regulator.

[0048] Further, it is composed of the following components: 15-25 parts of polymerized polyol, 3-5 parts of polyether modified silicone oil, 3-5 parts of self-made sulfonate polyol, 20-30 parts of isocyanate, small molecule 0.5-1.5 parts of polyol, 2-4 parts of hydrophilic chain extender, 0.3-0.8 parts of small molecule terminal amino compound, 45-55 parts of deionized water, self-made blocke...

Embodiment 2

[0065] Add 10 parts of PBA 2000, 10 parts of PTMG 2000, 5 parts of self-made sulfonate polyol (molecular weight 1300), 5 parts of polyether modified silicone oil 1000, and 5 parts of Ymer-N120 into a four-necked flask for 110~ Dehydration under reduced pressure at 120°C for 1 hour; then lower the temperature to below 70°C, add 25 parts of HMDI, then raise the temperature to 85-90°C, add a small amount of organic bismuth catalyst and keep it at this temperature for 2 hours to measure the NCO content; after the NCO content reaches the standard, Cool down to about 50°C, add 0.6 parts of ethylene glycol and 0.1 part of trimethylolpropane, keep warm at 75-80°C, and measure the NCO content; after the NCO content reaches the standard, add acetone to dilute and reduce the viscosity, and at the same time cool down to 50°C. Use deionized water to emulsify and disperse under a high-speed shearing machine. After it is completely dispersed, add 1 part of ethylenediamine water dilution for p...

Embodiment 3

[0068] Add 10 parts of PCL2000, 10 parts of PTMG2000, 5 parts of polyether modified silicone oil 2000, 5 parts of self-made sulfonate polyol (molecular weight: 1300), and 3 parts of Ymer-N120 into a four-necked flask and reduce the pressure at 110-120°C Dehydration for 1 hour; then lower the temperature to below 70°C, add 25 parts of HMDI, then raise the temperature to 85-90°C, add a small amount of organic bismuth catalyst and keep it at this temperature for 2 hours to measure the NCO content; after the NCO content reaches the standard, cool down to 50°C Add 1 part of butanediol and 0.2 parts of trimethylolpropane, keep warm at 75-80°C, and measure the NCO content; after the NCO content reaches the standard, add acetone to dilute and reduce the viscosity, and at the same time lower the temperature to below 50°C. Use deionized water to emulsify and disperse under a high-speed shearing machine. After it is completely dispersed, add 2 parts of ethylenediamine water dilution solut...

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Abstract

The invention discloses a water-based polyurethane surface layer resin, which is made of the following raw materials in parts by weight: 10-30 parts of polymer polyol, 0-5 parts of polyether modified silicone oil, 0-5 parts of self-made sulfonate type polymer polyol 5 parts, 10-30 parts of isocyanate, 0.1-2 parts of small molecule polyol, 1-5 parts of hydrophilic chain extender, 0.1-1 part of small molecule terminal amino compound, 40-60 parts of deionized water, self-made closed type water-based 1-3 parts of isocyanate crosslinking agent, 1-5 parts of pH regulator. The water-based polyurethane surface layer resin of the present invention is an environmentally friendly material, which meets the environmental protection standards of the European Union; it belongs to the surface layer resin for synthetic leather. When the two-component adhesive is used together, poor adhesion or even delamination may occur.

Description

technical field [0001] The invention relates to the field of water-based polyurethane surface layer resins for synthetic leather, in particular to the preparation of surface layer resins that adhere well to solvent-free two-component adhesives, and specifically relate to a water-based polyurethane surface layer resin that adheres well to solvent-free two-component adhesives. The polyurethane surface layer resin, meanwhile, the invention also relates to the preparation method of the resin. Background technique [0002] Synthetic leather has been widely used in all aspects of people's daily life. The traditional synthetic leather production method uses a large amount of toxic and harmful solvents such as DMF, butanone, and ethyl acetate. Today, with increasingly high environmental protection requirements, this production and processing method at the cost of sacrificing the ecological environment and people's health has already It has been resisted and restricted from all walk...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/80C08G18/76C08G18/66C08G18/61C08G18/48C08G18/42C08G18/32C08G18/12D06N3/14
CPCC08G18/12C08G18/4018C08G18/4238C08G18/4277C08G18/4854C08G18/61C08G18/8022C08G18/8054C08G18/8077D06N3/146D06N3/147D06N2203/068D06N2209/1685C08G18/3206C08G18/3228
Inventor 王伟俞建峰沈连根徐欣欣石磊纪尚超李寿伟徐金芳
Owner JIAXING HEXIN CHEM IND
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