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Zwitter-ion waterborne polyurethane resisting protein and microorganism adsorption

A water-based polyurethane and microbial adsorption technology, applied in polyurea/polyurethane coatings, coatings, etc.

Active Publication Date: 2016-07-06
四川创智炜业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to literature research, there are no literature and patent reports about the preparation of zwitterionic polyurethane by this method.

Method used

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  • Zwitter-ion waterborne polyurethane resisting protein and microorganism adsorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The specific process of PEDA preparation reaction is as follows: Weigh 0.5mol (45.6g) of 2-amino-1,3-propanediol, Mn=91.11 in a 250ml three-neck flask, add 153ml of formic acid, immediately add 70ml of 37% formaldehyde solution, and After mixing and stirring for 2 hours, the temperature was raised to 80° C. for 8 hours (during this process, gas would be released continuously). Cool down to 25°C, add 90ml of 37% HCl, and stir for 1h. Then an appropriate amount of NaOH was added to adjust the pH to 12, the mixture was distilled under reduced pressure, concentrated, and the solvent was removed. Add excess methanol, filter to remove salts, and concentrate the filtrate under reduced pressure to obtain the pure product as white crystals;

[0025] Weigh 20.00g polyoxypropylene glycol (M n =2000), added to a 250ml three-necked flask, dehydrated and dried in vacuum at 110°C for 2h, then lowered the temperature to 70°C, added 3.48g of toluene diisocyanate and 100ml of tetrahydr...

Embodiment 2

[0027]The specific process of PEDA preparation reaction is as follows: Weigh 0.5mol (45.6g) of 2-amino-1,3-propanediol, Mn=91.11 in a 250ml three-neck flask, add 153ml of formic acid, immediately add 70ml of 37% formaldehyde solution, and After mixing and stirring for 2 hours, the temperature was raised to 80° C. for 8 hours (during this process, gas would be released continuously). Cool down to 25°C, add 90ml of 37% HCl, and stir for 1h. Then an appropriate amount of NaOH was added to adjust the pH to 12, the mixture was distilled under reduced pressure, concentrated, and the solvent was removed. Add excess methanol, filter to remove salts, and concentrate the filtrate under reduced pressure to obtain the pure product as white crystals;

[0028] Weigh 20.00g polytetrahydrofuran (M n =2000), added to a 250ml three-necked flask, dehydrated and dried under vacuum at 110°C for 2 hours, then lowered the temperature to 60°C, added 5g of diphenylmethane diisocyanate (dissolved in ...

Embodiment 3

[0030] The specific process of PEDA preparation reaction is as follows: Weigh 0.5mol (45.6g) of 2-amino-1,3-propanediol, Mn=91.11 in a 250ml three-neck flask, add 153ml of formic acid, immediately add 70ml of 37% formaldehyde solution, and After mixing and stirring for 2 hours, the temperature was raised to 80° C. for 8 hours (during this process, gas would be released continuously). Cool down to 25°C, add 90ml of 37% HCl, and stir for 1h. Then an appropriate amount of NaOH was added to adjust the pH to 12, the mixture was distilled under reduced pressure, concentrated, and the solvent was removed. Add excess methanol, filter to remove salts, and concentrate the filtrate under reduced pressure to obtain the pure product as white crystals;

[0031] Weigh 10.00g polytetrahydrofuran (M n =1000), added to a 250ml three-necked flask, dehydrated and dried under vacuum at 110°C for 2h, then lowered the temperature to 60°C, added 4.5g of isophorone diisocyanate and 100ml of tetrahyd...

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Abstract

The invention provides zwitter-ion waterborne polyurethane resisting protein and microorganism adsorption.According to the preparing method, monomer-dimethylamino-1,3-propylene glycol (PEDA) with di-hydroxy and tertiary amino is prepared through the Eschweiler-Clarke methylation, then PEDA is introduced to a waterborne polyurethane main chain through the addition polymerization reaction to obtain polyurethane (NPU) with tertiary amino, NPU reacts with an ester compound to obtain zwitter-ion polyurethane, finally, a neutralizing agent is added for neutralizing, and the mixture is emulsified in water to obtain zwitter-ion waterborne polyurethane.A polyurethane material can be endowed with the self-emulsifying performance and the protein adsorption resisting performance due to existence of zwitter-ions, and formation of biology defiling is prevented.In the aspect of biomedical application, due to existence of the zwitter-ions, the biocompatibility of the polyurethane material can be improved, adsorption of protein, blood platelet and the like can be reduced, and therefore a coating has anticoagulation performance.Zwitter-ion waterborne polyurethane has a good application prospect in the aspects of water-based paint for leather and biomedical coatings.

Description

technical field [0001] The invention relates to the field of water-based polyurethane resins, in particular to an anti-protein and microbial adsorption zwitterionic water-based polyurethane and a preparation method thereof. Background technique [0002] Polyurethane (PU) is one of the fastest-growing polymer materials, but the system has its own inherent defects. Driven by environmental protection requirements, with the establishment of environmental protection regulations in various countries and the enhancement of people's environmental awareness, the emission of volatile organic compounds (VOC) in traditional solvent-based coatings is increasingly restricted. Waterborne polyurethane not only inherits the inherent high strength, friction resistance, flexibility and fatigue resistance of general polyurethane, but also uses water as the dispersion medium, does not contain or only contains a small amount of organic solvents, does not pollute the environment, and is safe to us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/83C08G18/76C08G18/66C08G18/48C08G18/32C09D175/08C09D175/06C08G18/75C08G18/73C08G18/10C08G18/44
CPCC08G18/10C08G18/3275C08G18/44C08G18/4825C08G18/4854C08G18/6648C08G18/6681C08G18/73C08G18/755C08G18/7614C08G18/7671C08G18/83C08G18/831C09D175/06C09D175/08
Inventor 王春华穆畅道李丽林炜
Owner 四川创智炜业科技有限公司
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