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Surface-treated zinc oxide powder, anti-bacterial agent, and anti-bacterial composition

A technology of surface treatment and zinc oxide powder, which is applied in the field of antibacterial agents and antibacterial compositions, and surface treatment of zinc oxide powder, which can solve the problems of no antibacterial effect and achieve good antibacterial effect

Inactive Publication Date: 2014-08-06
SAKAI CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the antibacterial effect is proportional to the specific surface area of ​​the zinc oxide powder, so the antibacterial effect is not found at all for large-particle zinc oxide powders with an average particle diameter of 1.1 μm or more.
Therefore, zinc oxide powder with an average particle size of 1.1 μm or more cannot be used for applications requiring antibacterial properties

Method used

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  • Surface-treated zinc oxide powder, anti-bacterial agent, and anti-bacterial composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Take 100 g of large particle zinc oxide LPZINC-2 (manufactured by Sakai Chemical Industry Co., Ltd., with an average particle size of 2 μm) and 1 g of silicone oil (KF-9901 manufactured by Shin-Etsu Chemical Co., Ltd.) in a 300 ml mayonnaise bottle, and shake with a paint conditioner (Paint Conditioner). After 20 minutes of uniform coating, heat treatment was performed at 105° C. for 12 hours to obtain surface-treated zinc oxide particles. The obtained surface-treated zinc oxide particles were prepared as test pieces for antibacterial property tests according to the above procedure. The results of the antibacterial test are listed in Table 1.

Embodiment 2

[0070] In a 300 ml mayonnaise bottle, 100 g of large-particle zinc oxide LPZINC-2 (manufactured by Sakai Chemical Industry Co., Ltd., with an average particle size of 2 μm) and 1 g of decyltrimethoxysilane (KBM-3103C, manufactured by Shin-Etsu Chemical Co., Ltd.) were prepared with paint. After 20 minutes of machine vibration and uniform coating, heat treatment was performed at 105° C. for 12 hours, thereby obtaining surface-treated zinc oxide particles. The obtained surface-treated zinc oxide particles were prepared as test pieces for antibacterial property tests according to the above procedure. The results of the antibacterial test are listed in Table 1.

Embodiment 3

[0072] In a 300ml mayonnaise bottle, take 100 g of large-particle zinc oxide LPZINC-2 (manufactured by Sakai Chemical Industry Co., Ltd., with an average particle size of 2 μm) and 1 g of a titanium coupling agent (KR-TTS, manufactured by AJINOMOTO FINE TECHNO Co., Ltd.), and use a paint preparation machine After shaking for 20 minutes, the coating was uniform, and then heat treatment was performed at 105° C. for 12 hours to obtain surface-treated zinc oxide particles. The obtained surface-treated zinc oxide particles were prepared as test pieces for antibacterial property tests according to the above procedure. The results of the antibacterial test are listed in Table 1.

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Abstract

Provided is a zinc oxide powder having an average particle diameter of 1.1 mum or more and having an anti-bacterial activity; an anti-bacterial agent comprising the zinc oxide powder; and an anti-bacterial composition containing the anti-bacterial agent. A surface-treated zinc oxide powder which has an average particle diameter of 1.1 mum or more and of which the surface is treated with at least one compound selected from silicon oxide, a silicone oil, an organosilicon compound and an organotitanium compound.

Description

technical field [0001] The present invention relates to a surface-treated zinc oxide powder, an antibacterial agent and an antibacterial composition. Background technique [0002] Zinc oxide powder is widely used in various applications such as resins, films, and cosmetics. It has antibacterial properties as one of its properties. The antibacterial properties of such zinc oxide powders can be used to impart antibacterial properties to products such as resins, films, and cosmetics. [0003] Conventionally, zinc oxide powders having an average particle diameter of at least less than 1.1 μm are generally used as zinc oxide powders used in various applications, and these particles exhibit good antibacterial properties. However, zinc oxide having an average particle diameter of 1.1 μm or less is difficult to disperse, has a small bulk specific gravity, and has problems in handling. Furthermore, there is a problem that the use feeling is deteriorated in cosmetic use. In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02A01N59/16A01P3/00A61K8/27A61Q1/04A61Q1/08A61Q1/10A61Q1/12A61Q17/04A61Q19/00
CPCA01N59/16A01N25/26C09C1/043C01P2004/61C09C3/12A61K8/27A61Q17/005A61Q19/00A61K8/0241A61K2800/10A61K2800/412A61K2800/622A61K2800/624A61K2800/651C08K9/02C08K9/04C08K9/06
Inventor 桥本充央真柄光一郎西田训宰
Owner SAKAI CHEM IND CO LTD
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