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Antimicrobial coat on surface of water system, and its preparation method

A surface coating and water system technology, applied in coatings, conduits, etc., can solve problems such as environmental pollution, hidden production hazards, and harm to workers' health, and achieve the effects of protecting the environment, reducing safety hazards, and improving the environment

Active Publication Date: 2013-06-12
宁波保税区安杰脉德医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it cannot be ignored that these methods all use organic solvent systems. The volatilization of these organic solvents not only brings hidden dangers in production, but also pollutes the environment and harms the health of workers.

Method used

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  • Antimicrobial coat on surface of water system, and its preparation method
  • Antimicrobial coat on surface of water system, and its preparation method
  • Antimicrobial coat on surface of water system, and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Primer coating preparation: Weigh 20 g of water-based polyurethane resin (produced by DSM, with a solid content of 40%), 0.1 g of sodium lauryl sulfate, 1 g of carboxymethyl cellulose, and 20 g of deionized water, mix well, and statically After standing for 24 hours for defoaming, the bottom coating mixture was obtained.

[0033] Surface coating preparation: Weigh 5g of polyvinylpyrrolidone, 5g of water-based polyurethane resin (solid content 40%), 0.1g of sodium lauryl sulfate, and 0.3g of organic silicon quaternary ammonium salt (produced by Guangzhou Nuokang Chemical Co., Ltd., model HM98) , 40 g of deionized water, mixed evenly, and allowed to stand for 24 hours for defoaming to obtain a surface coating mixture for use.

[0034] Immerse the PVC catheter in ethanol, ultrasonically clean it at 40KHz for 10 minutes, remove the dirt on the surface, and dry it; then immerse it in the prepared bottom coating mixture for 10 seconds, take it out and bake it at 70°C for 6 mi...

Embodiment 2

[0037] Primer coating preparation: Weigh 20g of water-based polyacrylic resin (produced by DSM, solid content 40%), 0.15 of trisodium phosphate, 1.5g of carboxymethyl cellulose, 30g of deionized water, mix well, and let stand for 24 hours After defoaming, the bottom coating mixture is obtained.

[0038] Surface coating preparation: weigh 6g of polyvinylpyrrolidone, polyacrylic acid resin (manufactured by DSM, solid content 40%) 2g, trisodium phosphate 0.15, deionized water 50g, 3-(trimethoxysilyl) propyl Dimethyloctadecylammonium chloride (Dow Corning DC-5700, USA) 0.15 g, mixed evenly, and left to stand for 24 hours for degassing to obtain the surface coating mixture.

[0039] Immerse the latex catheter in ethanol, ultrasonically clean it at 45KHz for 7 minutes, remove the dirt on the surface, and dry it; then immerse it in the prepared bottom coating mixture for 10 seconds, take it out and bake it at 60°C for 10 minutes until it is completely dry; The thickness of the under...

Embodiment 3

[0041] Primer coating preparation: Weigh 20 g of water-based bisphenol A epoxy resin (produced by DSM, solid content 40%), 0.15 g of polyoxyethylene alkyl ester, 1.5 g of carboxymethyl cellulose, and 30 g of deionized water , mix well, let stand for 24 hours to defoam and obtain the bottom coating mixture;

[0042]Surface coating preparation: weigh 6g of polyvinylpyrrolidone, 1g of water-based polyurethane resin (produced by DSM, solid content 40%), 1g of water-based polyacrylic resin (produced by DSM, solid content of 40%), polyoxyethylene Alkyl ester 0.15g, deionized water 50g, nano-silver (manufactured by Beijing Jieershuang, model SCJ-951) 0.05g, mix well, stand for 24 hours to get the surface layer coating mixture after defoaming.

[0043] Immerse the silicone catheter in ethanol, ultrasonically clean it at 50KHz for 5 minutes, remove the dirt on the surface, and dry it; then soak it in the bottom coating mixture for 10 seconds, take it out and bake it at 90°C for 3 minut...

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Abstract

The invention relates to an antimicrobial coat on the surface of a water system, and its preparation method. The antimicrobial coat is characterized in that the antimicrobial coat comprises a primer coat attached to the surface of a medical apparatus matrix, and a surface coat attached to the primer coat, wherein the primer coat is composed of 20-50 parts by weight of an aqueous adhesive, 0.05-0.3 parts by weight of an aqueous surfactant, 1-5 parts by weight of an aqueous thickening agent, and 10-50 parts by weight of deionized water; and the surface coat is composed of 5-10 parts by weight of an aqueous macromolecule, 0.05-0.3 parts by weight of the aqueous surfactant, 1-5 parts by weight of the aqueous adhesive, 40-80 parts by weight of deionized water, and 0.05-0.3 parts by weight of an aqueous antimicrobial agent. Compared with coats in the prior art, the antimicrobial coat provided by the invention has the advantages of environmental protection, effective reduction of the surface friction resistance, and good antimicrobial effect.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a water system antibacterial surface coating for polymer substrates and a preparation method thereof. Background technique [0002] With the development of medical technology, interventional therapy catheters are widely used in clinical treatment. Many devices that need short-term or long-term contact with human tissue, such as catheters, guide wires, etc., will rub against the tissue in contact with them when they are inserted or pulled out, which may cause damage to the tissue and cause adverse reactions such as inflammation. Therefore, in order to reduce the risk of surgery and alleviate the suffering of patients, lubricants such as silicone oil, paraffin oil, vaseline, etc. are often used to coat the catheter surface in clinical practice. However, the lubricant coated on the surface of the instrument is difficult to last, the lubricity is not good, and it is not conducive to...

Claims

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Application Information

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IPC IPC(8): A61L29/08A61L29/14A61L29/16
Inventor 钟祥孙永富盛颖钟宁张明飞
Owner 宁波保税区安杰脉德医疗器械有限公司
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