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Antibacterial zeolite particles and antibacterial resin composition

A technology of zeolite and particles, which is applied in the field of antibacterial zeolite particles and antibacterial resin compositions containing the particles, and can solve the problems of reduced commercial value of resin products and the like

Active Publication Date: 2007-12-26
SINANEN ZEOMIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This in turn leads to a considerable reduction in the commercial value of the resin product depending on its type

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] In this Example 1, 5 antibacterial zeolite particle samples (Sample Nos. 1-5) were prepared using a reaction solution in which the concentration of silver and zinc ions was changed with time.

[0120] Preparation of sample No. 1:

[0121] (1) Add water to 1 kg of zeolite A particles dried by heating at 110° C. to produce 1.3 L of slurry, then stir the slurry to degas it, further add an appropriate amount of 0.5 N nitric acid solution and water to the slurry to obtain This yielded 1.8 L of slurry, the pH of which was adjusted to a level of 5-7.

[0122] (2) Add 1.5 L of a solution (30° C.) containing 1.5 mole / L ammonium nitrate and 0.01 mole / L silver nitrate to the slurry prepared in the above stage (1) to produce a slurry liquid and the latter is then stirred for 16 Hour.

[0123] (3) 1.5 L of a 0.15 mole / L zinc nitrate solution (30° C.) was added to the slurry liquid prepared in the above stage (2) to produce a slurry liquid (reaction solution) having a total volume ...

Embodiment 2

[0163] In this Example 2, three samples of antimicrobial zeolite particles (Sample Nos. 6-8) were prepared by first subjecting the starting zeolite particles to ion exchange treatment in the presence of silver ions and then in the simultaneous presence of silver and zinc ions.

[0164] Preparation of sample No. 6:

[0165] (1) Add water to 1 kg of zeolite A particles dried by heating at 110° C. to produce 1.3 L of slurry, then stir the latter to degas it, further add an appropriate amount of 0.5 N nitric acid solution and water to the latter to thereby A 1.8 L slurry was produced, the pH of which was adjusted to a level of 5-7.

[0166] (2) To the slurry prepared in the above stage (1), 1.5 L of a solution (80° C.) containing 1.5 mole / L ammonium nitrate and 0.01 mole / L silver nitrate was added to produce a slurry liquid and the latter was then stirred for 10 hours to thereby subject the zeolite particles to ion exchange reactions under ion-exchangeable equilibrium conditions....

Embodiment 3

[0192] In this Example 3, three antibacterial zeolite particle samples (No. 9-11 samples) were prepared by the following two-stage ion exchange reaction: a first ion exchange reaction from a reaction solution (first reaction solution) containing silver ions; and a second ion exchange reaction with a reaction solution (second reaction solution) containing zinc ions.

[0193] Preparation of sample No. 9:

[0194] (1) To 1 kg of water assisted by heating dried zeolite A particles at 110° C. to produce 1.3 L of slurry, followed by stirring the latter to degas it, further adding an appropriate amount of 0.5 N nitric acid solution and the latter assisted by water to This yielded 1.8 L of slurry, the pH of which was adjusted to a level of 5-7.

[0195] (2) Add 3.0 L of a solution (30° C.) containing 1.5 mole / L ammonium nitrate and 0.01 mole / L silver nitrate to the slurry prepared in the above stage (1) to produce a slurry liquid with a total volume of 4.8 L ( first reaction solutio...

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Abstract

The present invention herein provides antibacterial zeolite particles whose ion- exchangeable ions have completely or partially been replaced with silver ions and zinc ions, wherein the ratio (A / B) of the silver ion concentration (A) to the zinc ion concentration (B) in the antibacterial zeolite particles increases in the direction along the depth of each zeolite particle. The antibacterial zeolite particles show excellent discoloration-resistant characteristics, while maintaining their excellent antibacterial activities. Accordingly, the antibacterial zeolite particles can suitably be applied to all sorts of products that are required to have antibacterial properties.

Description

technical field [0001] The present invention relates to an antibacterial zeolite particle and an antibacterial resin composition containing the particle. More particularly, the present invention relates to antibacterial zeolite particles and antibacterial resin compositions comprising the same, which have anti-discoloration properties. Background technique [0002] It is already known to exist antibacterial zeolite particles prepared by replacing the ion-exchangeable metal ions present in the zeolite particles by antibacterial metal ions (such as silver, copper and / or zinc ions), and antibacterial combinations comprising such zeolite particles are also known. thing. However, in this regard, it is known that an antibacterial resin composition obtained by incorporating such repellent zeolite particles into a resin undergoes discoloration over time. As a means of solving such a problem of color change over time associated with conventional antibacterial zeolite particles, a t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K7/00A01N59/16C08L101/00C08K3/34
CPCA01N59/16A01N25/08A01N2300/00C01B39/00B01J29/00B01J29/068
Inventor 栗原靖夫三宅公光子内田真志
Owner SINANEN ZEOMIC CO LTD
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