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

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Problems solved by technology

However, it cannot be ignored that these methods all use organic solvent systems. The volatilization of these organic s

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
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Example Embodiment

[0031] Example 1

[0032] Bottom coating preparation: Weigh 20g of water-based polyurethane resin (produced by DSM, with a solid content of 40%), 0.1g of sodium lauryl sulfate, 1g of carboxymethyl cellulose, 20g of deionized water, and mix well. After being left for 24 hours to defoam, the primer coating mixture is obtained.

[0033] Surface coating preparation: weigh polyvinylpyrrolidone 5g, water-based polyurethane resin 5g (solid content 40%), sodium lauryl sulfate 0.1g, organosilicon quaternary ammonium salt (produced by Guangzhou Nuokang Chemical, model HM98) 0.3g , 40g deionized water, mix well, stand for 24 hours to defoam, and obtain the surface coating mixture for later use.

[0034] Dip the PVC catheter into ethanol, clean it ultrasonically at 40KHz for 10 minutes, remove the dirt on the surface, and dry; then immerse it in the prepared primer coating mixture for 10 seconds, take it out and bake it at 70°C for 6 minutes to dryness; The thickness of the bottom coating is 3...

Example Embodiment

[0036] Example 2

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

[0038] Surface coating preparation: Weigh 6g polyvinylpyrrolidone, 2g polyacrylic resin (produced by DSM, solid content 40%), 0.15 trisodium phosphate, 50g deionized water, 3-(trimethoxysilyl)propyl Dimethyl octadecyl ammonium chloride (Dow Corning DC-5700, USA) 0.15g, mix well, and stand for 24 hours to defoam to obtain the surface coating mixture.

[0039] Dip the latex catheter into ethanol, clean it ultrasonically at 45KHz for 7 minutes, remove the dirt on the surface, and dry it; then immerse it in the prepared primer coating mixture for 10 seconds, take it out and bake it at 60°C for 10 minutes to dry; The thickness of the bottom coating is 1 micron detected by scanning ele...

Example Embodiment

[0040] Example 3

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

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

[0043] Dip the silicone tube into ethanol, clean it ultrasonically at 50KHz for 5min, remove the dirt on the surface, and dry it; then immerse it in the primer coating mixture for 10 seconds, take it out and bake it at 90℃ for 3min to dryness, SEM measurement The thick...

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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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