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Vitreous antimicrobial agent and antimicrobial product

By adjusting the proportion of glass components and adding specific ingredients, the problem of deterioration, discoloration and insufficient antibacterial effect of glassy antibacterial agents containing silver and zinc when processed in resin is solved, achieving efficient and durable antibacterial performance and color stability. Suitable for a wide range of resin processing and mass production.

Inactive Publication Date: 2007-07-04
TOAGOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if P as a glass skeleton forming component 2 o 5 and B 2 o 3 If the concentration is not kept as low as possible, the glass cannot contain a relatively large amount of ZnO, so problems such as hot water resistance, discoloration, and hardness cannot be solved when blended into resin processed products.
In addition, although a composition containing a high concentration of zinc and easily reducible silver is easily produced in a small amount of trial production at the laboratory level, there is a problem of coloring of the glass when commercial production of hundreds of kilograms or more is carried out.
Therefore, the mass production of antibacterial agents composed of glass containing silver with high antibacterial effect and high concentration of zinc is not easy to implement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] ○ embodiment 1 (preparation of vitreous antibacterial agent)

[0066] 600 kg of the glass raw material mixture which consists of the composition of Example 1 shown in Table 1 was heat-melted at 1100-1300 degreeC. Cool after melting, and dry-grind the obtained glass with a ball mill to obtain glassy antibacterial agent powder with an average particle diameter of about 9 μm.

Embodiment 2

[0067] ○ embodiment 2 (preparation of vitreous antibacterial agent)

[0068] About 600 kg of glass raw material preparations which consist of the composition of Example 2 shown in Table 1, the same operation as Example 1 was implemented, and the vitreous antibacterial agent powder was obtained.

Embodiment 3

[0073] ○Example 3 (preparation of formed plate for test, colorability, antibacterial test, hot water resistance test)

[0074] The polypropylene resin (grand poly pro J707Z) that grand polymer company makes is compounded 0.5 mass % of the vitreous antibacterial agent that gains among the embodiment 1,2 and comparative example 1-9, uses the injection molding machine that name machine makes the company to make M-50AII-DM was injection-molded at a molding temperature of 240° C. to obtain a molded plate for evaluation (No. 1-11) of 11 cm×11 cm×2 mm.

[0075] For comparison, without adding any glass, injection molding was carried out in the same manner using only polypropylene resin to obtain a molded plate for comparison (No. A).

[0076]Furthermore, the antibacterial power (initial antibacterial effect and antibacterial effect after hot water immersion) of this formed board was evaluated based on JIS Z2801. The specific operation of the antimicrobial activity evaluation method i...

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PUM

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Abstract

In particular, a vitreous antimicrobial agent comprising, provided that the total of glass components is 100 mass%, 0.1 to 2 mass% of Ag2O, 40.5 to 49 mass% of ZnO, 6 to 9.5 mass% of SiO2, 30.5 to 39.5 mass% of B2O3, 2 to 10 mass% of alkaline earth metal oxide and 6 to 7.5 mass% of Na2O, optionally together with 0.01 to 5 mass% of CeO2; and an antimicrobial resin composition comprising the vitreous antimicrobial agent, or an antimicrobial product comprising the vitreous antimicrobial agent.A vitreous antimicrobial agent that is added to various resins and not only exhibits high antimicrobial activity but also excels in color fastness and hot water resistance, and that can be easily produced on a commercial-level production volume; and an antimicrobial resin composition or antimicrobial product comprising the vitreous antimicrobial agent.

Description

technical field [0001] The present invention relates to a vitreous antibacterial agent containing silver and zinc, an antibacterial resin composition containing the antibacterial agent, and an antibacterial product. Background technique [0002] Conventionally known inorganic antibacterial agents are those in which an antibacterial metal such as silver or copper is supported on apatite, zeolite, glass, zirconium phosphate, silica gel, or the like. Compared with organic antibacterial agents, these inorganic antibacterial agents are not only safe, but also have better persistence of antibacterial effect because they do not volatilize and decompose, and have excellent heat resistance. Therefore, the antibacterial resin composition obtained by mixing these antibacterial agents with various polymer compounds can be processed into antibacterial products such as fibers, films, or various molded products, and can be used in various applications. [0003] In particular, vitreous ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16C03C3/066C03C4/00C08K3/38C03C3/089A01N59/00A01N59/06A01N59/14C03C3/095C03C12/00C08K3/00C08K3/22C08K3/36C08L101/00
CPCC08K3/22C03C2204/02C03C12/00C08K3/005C03C3/066A01N59/16C08K2201/014A01N59/14C08K3/015A01N2300/00A01N59/08
Owner TOAGOSEI CO LTD
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