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Antimicrobial phase-separable glass/polymer articles and methods of making the same

A technology of anti-microbial and anti-microbial reagents, applied in botany equipment and methods, chemical instruments and methods, biocides, etc., can solve problems such as high cost

Active Publication Date: 2021-10-08
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem is that the exposed surface or surfaces of some conventional antimicrobial articles can require additional costly surface treatments and other processing steps to properly expose the antimicrobial agents in these articles to achieve the desired antimicrobial properties. Microbial Efficacy Level

Method used

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  • Antimicrobial phase-separable glass/polymer articles and methods of making the same
  • Antimicrobial phase-separable glass/polymer articles and methods of making the same
  • Antimicrobial phase-separable glass/polymer articles and methods of making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Various polymers were used as matrix materials to fabricate antimicrobial composite films by extrusion process. These membranes are used for Figure 1A The antimicrobial composite film 50a of the illustrated antimicrobial article 100a is comparable. Tables 1 and 2 below summarize the materials and process conditions used to make these films. Prior to each run listed in Table 2, a particular polymer (eg, Polymer 1) was hand mixed with copper phase-separable glass in a bag prior to placement in the extruder. Next, the mixture of polymer and copper glass particles was put into an extruder, which was then used to extrude an antimicrobial composite film. In this example, a Leistritz AG MIC18-7R GL twin-screw extruder (2.5 cm) was used to produce films according to the conditions listed in Table 2. The resulting product from the extruder was directed through a 5 cm wide film and a set of rollers / windup elements to form each film. Such as Figure 4A As shown, "Batch 3" in...

Embodiment 2

[0109] In this example, polycarbonate membranes (without phase-separable glass) were prepared according to "Batch 1" of Table 2 and the conditions listed in Example 1 above. Once the polycarbonate film was extruded through a die at approximately 290°C, it was rolled to final thickness at 140°C and stamped into the copper glass listed in Table 1 above.

Embodiment 3

[0111] see Figure 5 , the histogram showing the antimicrobial efficacy of the antimicrobial composite films from Examples 1 and 2 above (tested according to the modified EPA copper test protocol). Specifically, "Example 5-1" corresponds to "Lot 1" of Example 2, ie, copper glass imprinted polycarbonate. "Example 5-2" corresponds to "batch 2" of Example 1, that is, a polypropylene / copper glass composite film co-extruded from polypropylene and copper glass. Finally, Examples "5-3" correspond to "Batch 3" of Example 1, ie a polypropylene / copper glass / carbon black composite film in which polypropylene, copper glass and carbon black were co-extruded into a final film.

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Abstract

An antimicrobial article comprising: an antimicrobial composite region comprising a matrix comprising a polymeric material and a first plurality of particles within the matrix. The particles comprise phase-separable glass with a copper-containing antimicrobial agent. The antimicrobial composite region may be a film containing said first plurality of particles, which is subsequently laminated to the block element. The first plurality of particles may also be pressed into a membrane or block element to define an antimicrobial composite region. The exposed surface portion of the antimicrobial composite area may exhibit at least a 2-log reduction in concentrations of at least one of Staphylococcus aureus, Enterobacter aerogenes, and Pseudomonas aeruginosa according to the modified EPA copper test protocol.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 287,982, filed January 28, 2016, which application is based upon and is hereby incorporated by reference in its entirety. Background technique [0003] The present disclosure generally relates to antimicrobial articles and methods of making the same. More specifically, various embodiments described herein relate to glass / polymer composite antimicrobial articles having copper-containing antimicrobial agents and various methods of making the same. [0004] Consumer electronics, including touch-activated or touch-interactive devices, such as screen surfaces (eg, surfaces of electronic devices having user interaction capabilities activated by touching specific portions of the surface) are becoming increasingly popular. As the degree of touchscreen-based interaction between users and devices increases, so does the likelihood t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C4/00C03C10/00C08K3/40C08K13/02A01N25/00A01N59/20A01N59/06A01N59/14A01N59/26C08K3/015
CPCC03C4/0035C03C10/00C08K3/40C03C2204/02A01N25/34C08K3/04C08K3/015A01N59/20C09K9/00A01N25/08A01N25/10C08L69/00C08L23/12C03C14/004C03C14/006C03C2214/04C03C2214/16
Inventor 蒋大跃K·A·瓦希拉克斯F·C·瓦格纳C·A·K·威廉姆斯
Owner CORNING INC
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