Antibacterial composition, antibacterial brush filament and preparation method thereof

An antibacterial composition and technology for brushing filaments, which can be used in botany equipment and methods, rayon manufacturing, and preservation of human or animal bodies. Effect of improving antibacterial efficiency

Inactive Publication Date: 2011-05-04
DUPONT XINGDA FILAMENTS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But above-mentioned polyolefin or polyester composition also can not be used for preparing toothbrush brush silk, because the brush silk that prepares with this polyolefin or polyester composition also can occur discoloration, yellowing and antibacterial effect persistence during use Short and other questions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Embodiment 1: prepare antibacterial composition

[0090] 20 kg of nylon 612 (purchased from DuPont) slices were pulverized into powder (particle size D 50 = 3 microns). Then, 2 kg of KHFS-Z25 antibacterial powder produced by Haier Chemical was added to the powder and mixed with a mixer (SFC 100, purchased from KAYATA) at normal temperature. The obtained mixed antibacterial powder is blended and granulated by a twin-screw extruder (ZSK 70, W&P) to obtain a white uniform antibacterial composition, and the blending processing temperature is 230-250 degrees. The yellowness index (Yellow index) of the obtained antibacterial composition was 10.

Embodiment 2

[0092] The antibacterial composition obtained in Example 2 was added to nylon 612 slices in a proportion of 5% by weight, and mixed with a mixer (SFC 100, purchased from KAYATA). Then the resulting mixture is directly melt-spun through a single-screw extruder (SJ 30, Donglong Plastic Machinery Co., Ltd.), and the processing temperature is 220-240 degrees. Antibacterial monofilaments are obtained after cooling, stretching and setting. The obtained antibacterial monofilaments were tested against Staphylococcus aureus, Escherichia coli and Candida albicans by "shaking flask method" (ASTME 21492001 standard), and the antibacterial rates all reached 99.99%.

Embodiment 3

[0095] Embodiment 3: prepare antibacterial composition

[0096] 10 kg of salona ( Produced by DuPont Company) into slices, crushed into powder (particle size D 50 = 2 microns). Then add the antibacterial powder of B 7000 of 2 kilograms of Ciba Specialty Chemicals to the powder and mix it with a stirrer (SFC 100, purchased from KAYATA) at normal temperature. The obtained mixed antibacterial powder is blended and granulated by a twin-screw extruder (ZSK 70, W&P) to obtain a white uniform antibacterial composition, and the blending processing temperature is 250-260 degrees. The measured yellowness index (Yellow index) of the obtained antibacterial composition was 25.

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Abstract

The invention provides a method for preparing an antibacterial composition for monofilaments of toothbrushes, make-up brushes, paint brushes, civil brushes or industrial brushes. The method comprises the following steps of: (1) crushing a polymer mechanically to obtain polymer powder; and (2) mixing the polymer powder obtained in the step (1) and an antibacterial agent to obtain the antibacterial composition, wherein the antibacterial agent is a phosphate or glass micro powder of silver, zinc or a silver zinc complex. The invention also provides antibacterial agent-containing antibacterial monofilaments. The antibacterial agent is the phosphate or the glass micro powder of the silver, the zinc or the silver zinc complex, and the antibacterial effect of the antibacterial monofilaments is over 99 percent. By the method, the problem of discoloration caused by the antibacterial agent in the processing process can be solved, and the antibacterial agent can be dispersed in a resin matrix uniformly simultaneously, so the antibacterial efficiency of the antibacterial composition on ordinary bacteria is improved, and the antibacterial efficiency of the antibacterial composition on fungi is also improved simultaneously.

Description

technical field [0001] The invention relates to a toothbrush, a cosmetic brush, a paint brush, a civilian brush or an industrial brush filament and a preparation method thereof, in particular to an antibacterial toothbrush, a cosmetic brush, a paint brush, a civil brush or an industrial brush filament and a preparation method thereof. Background of the invention [0002] Generally, the bristles used in various brushes are made of synthetic materials and animal hair, for example, nylon 66, 610, 612 is often used to make the bristles of toothbrushes. In addition, polyesters such as PET, PTT, and PBT are also used to prepare some toothbrush filaments for disposable toothbrushes. [0003] However, these filaments themselves are not antibacterial. After brushing your teeth, a large number of bacteria and the fungus Candida albicans that cause bad breath will be produced on the surface during the placement period. When you use it next time, these bacteria will be directly introdu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/06C08L67/02C08K3/32C08K3/40C08K3/34A46B15/00D01F6/90D01F6/92D01F1/10
CPCA01N59/16A46B9/04A46D1/00A46D1/006C08G69/26C08J3/203C08L77/00C08L77/06D01F1/103C08K3/015A01N25/10A01N25/12A01N2300/00A01N25/08
Inventor 王铭松刘先桥
Owner DUPONT XINGDA FILAMENTS
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