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Method for mfg. antimicrobial articles

A technology of anti-microbial products, applied in botany equipment and methods, preservation of human or animal bodies, biocides, etc., can solve the problem of no anti-microbial activity

Inactive Publication Date: 2001-09-05
3M CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sponges made by these methods, while initially effective, mostly have no long-term antimicrobial activity because

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] According to preparation procedures A-C, using zinc / chitosan as ion / polymer solution, pyrithione as antimicrobial agent, prepared under the trade code "O-Cel-O All-Purpose Wipes" purchased from Minnesota Mining and Manufacturing Company, St. .Non-woven dishcloths from Paul Minnesota.

Embodiment 2

[0060] Antimicrobial preparations were prepared using wipes purchased from Kalle Nalo GmbH of Wiesbaden, Germany. Articles were prepared following Preparation Procedures A-C above except that the ion / polymer solution was prepared to include 0.6% by weight zinc acetate dihydrate and 0.6% by weight chitosan and 1.0% 3-(trimethoxysilyl) Propyl glycidyl ether (available from OSi Specialties Inc., Danbury, Connecticut under the trade designation "A-187").

Embodiment 3

[0062] Antimicrobial preparations were prepared using wipes purchased from Kalle Nalo GmbH of Wiesbaden, Germany. Articles were prepared following Preparation Procedures A-C above, except that the ion / polymer solution was 1.0% polyethyleneimine (PEI) (available from Hoechst Celanese of Portsmouth, VA under the designation "Corcat P-12") as the chelating polymer, and 1.0% zinc and 1.0% 3-(trimethoxysilyl)propyl glycidyl ether. The substrate was treated with a solution of sodium pyrithione at a concentration of 1000 ppm in 1 liter.

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Abstract

A method for making an anti-microbial article is described, the method comprising: providing a substrate; forming a solution comprising a chelating polymer and a metal ion; depositing the solution on the substrate; drying the substrate to form a coated substrate; and adding a potentiator to the coated substrate to form the antimicrobial article. Forming of the solution comprises (A) selecting a chelating polymer from the group consisting of polyglucosamines, ethylene acrylic acid copolymers, polycarboxylic acids, and polyamines, (B) dissolving the chelating polymer in acid to form an acidic solution, (C) preparing an aqueous solution of the metal ion, preferably by selecting a salt of the metal ion and dissolving the salt in water, and (D) combining the aqueous solution of the metal ion and the acidic solution. The addition of the potentiator to the coated substrate is accomplished by dissolving the potentiator in water to provide a potentiator solution, treating the coated substrate with the potentiator solution, drying the substrate to provide the finished anti-microbial article. The invention provides a method for the treatment of any of a variety of substrates to thereby render the substrate resistant to certain microbial growth.

Description

[0001] The present invention relates to methods of making articles resistant to microbial growth and methods of treating substrates to impart antimicrobial properties to the treated substrates. Background of the invention [0002] Control of mold, mildew, algae, fungi and other microorganisms or microorganisms in humid environments has long been of interest. Injections of mildewcides, antimicrobials, antiseptics, disinfectants, sanitizers, bactericides, algaecides, slimecides, antifoulants, or antiseptics are commonly used to remove microorganisms from a surface and prevent their recurrence. [0003] Absorbent articles used for cleaning, such as sponges and wipes, can harbor microorganisms such as bacteria and fungi that can survive and multiply rapidly in moist environments. In the food industry and the pharmaceutical industry, hygiene and preventing the spread of infection are paramount. Therefore, it is desirable to use substances which contro...

Claims

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Application Information

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IPC IPC(8): A61L2/16A01N25/34A01N59/16A61LA61L15/00B05D1/40B05D3/00B05D3/04B05D3/10D06M13/282D06M15/03
CPCA01N25/34A01N59/16A01N2300/00A01N43/40A01N25/10
Inventor K·R·莱昂M·M·小罗克
Owner 3M CO
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