CN101176446A

CN101176446A - Novel mildew resistant tablet and preparation method thereof

Info

Publication number: CN101176446A
Application number: CNA2006101466343A
Authority: CN
Inventors: 宋小芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-10
Filing date: 2006-11-10
Publication date: 2008-05-14

Abstract

The invention belongs to the technical field of antibacterial mould proofing piece, relates to an improved solid slow release chlorine dioxide mold proofing piece for leather and the preparation method. The invention is characterized in that the new mould proofing piece comprises the sodium chlorite, the solid acid, the stabilizing agent, the adhesive and the desiccant. The invention can be produced according to the following steps: evenly mixing the sodium chlorite and the drying agent in proportion; adding solid acid and the stabilizing agent for even agitation; adding adhesive tabletting. Air permeable packing paper is used for packaging. The mould proofing piece can be used in the sea transportation of shoes and other leather products, the packaging period, the transportation period, the shelf period and long-term preservation.

Description

A kind of novel mildew resistant tablet and preparation method thereof

Technical field

The present invention relates to the preparation method of a kind of efficient, environmental protection, convenient, safe solid slow-release type chlorine dioxide mildew resistant slice, belong to the technology of preparing of antibacterial mildew inhibitor.

Background of invention

Leather is mouldy to be the problem that makes process hides producer headache always, and it is just apparent more outstanding that increasingly extensive along with the leather and fur products scope of application, the increasing year by year of China's leather export volume are eliminated the problem that leather goes mouldy.The mouldy most important reason of leather is to contain a large amount of collagenic proteins in leather and the goods thereof, it is the fabulous nutrient source of mould and bacterial growth, in order to prevent the growth of mould and bacterium on leather and the goods thereof, must use mould inhibitor to suppress or eliminate the growth of mould and bacterium.

From the development of leather fungicide, mould inhibitor commonly used is organic phenol and halo phenols such as penta sodium pentachlorophenate, ethyl naphthol, p-nitrophenol etc. on the former leather, but because of its toxicity is big, uses inconveniently, progressively is eliminated or bans use of.Therefore, exploitation is efficient, low toxicity, wide spectrum, and leather fungicide easy to use has become the research focus of domestic and international leather mildew-resistant.

The chlorine dioxide leather mildew resistant slice that the present invention makes, its active ingredient chlorine dioxide has high-efficiency broad spectrum fungus and mildew resistance performance, can kill mould, bacterial propagule, gemma, fungi, virus etc. fully.And speed of action is fast, and efficacy stability is not influenced by environment acid-base value and content of organics, and the leather performance is not had influence.The World Health Organization (WHO) confirms, chlorine dioxide totally nontoxic evil, do not have carcinogenicity and teratogenesis fully, is proposed as the A1 level product in the safe disinfection material, is widely used in fields such as sterilization, mildew-resistant, anticorrosion, sterilization, deodorizing.At present more external national approved chlorine dioxide are used for food, food processing industry, pharmacy industry, hospital, public environment.China's health ministry also approved chlorine dioxide is disinfectant and new food additive.

Leather fungicide generally is to add in the different operations in leather processing procedure, and the different modes that applies is very big to the influential effect of mould inhibitor; And, can directly influence the outward appearance of leather if the applying method of mould inhibitor is improper, and reduce the physical and mechanical properties of leather, influence its serviceability.So mould inhibitor is restricted in the adding leather.The solid slow-release type chlorine dioxide mildew resistant slice of the present invention development is used for the final finished of leather, can directly it be put in the leather products packing box and directly not contact leather products simple and easy to use.

Summary of the invention

The novel mildew resistant tablet that the present invention makes is a solid chlorine dioxide leather mildew resistant slice, mainly is made up of sodium chlorite, solid acid, stabilizing agent, binder and desiccant.Envionmental humidity less than 30% condition under, all moisture content of material all are lower than under the prerequisite of 0.2% (W/W), with sodium chlorite and desiccant by behind the proportioning mixed grinding, solid acid that mixes in proportion and stabilizing agent add wherein, last binder stirs, compressing tablet is made mildew resistant slice with the air permeable wrapping wrapper.Key problem in technology of the present invention is the relative moisture of grain graininess, moisture and the environment of the used material of control, and adds suitable solid acid, stabilizing agent, desiccant and binder.

But the trace water that moisture in the desiccant absorbing environmental or mould and bacterial respiratory effect produce keeps environmental drying stable, thereby the growth of mould fungus inhibition and bacterium.On the other hand, following reaction takes place with solid acid in sodium chlorite in the presence of moisture:

8NaClO ₂+8H→6ClO ₂+Cl ₂+4H ₂O+8Na

This is reflected under the stable situation of environmental drying and does not react, and when in the environment when wetly, sodium chlorite absorption moisture is emitted chlorine dioxide slowly, reaches the effect of killing mould and bacterium.

The novel mildew resistant tablet that the present invention makes is the solid chlorine dioxide mildew resistant slice; be a kind of novel mildew-resistant, antimicrobial product; microorganisms such as the mould, bacterium of leather and fur productss such as footwear, handbag, fur clothing can effectively be drawn up, eliminate or be killed to this product, and the packing phase, delivery period, shelf life and the stand-by resting period that can be leather and fur productss such as footwear provide comprehensive protection.

Embodiment

At envionmental humidity less than 30%, under the prerequisite of each moisture content of material less than 0.2% (W/W).

After the polyethylene glycol of the polyacrylamide of the magnesium sulfate of 12.5 parts of weight, 2 parts of weight, 0.58 part of weight mixed, the stabilizing agent that makes 15 parts of weight was standby.

After the citric acid of the niter cake of 50 parts of weight, 100 parts of weight mixed, make the solid acid of 150 parts of weight.The sodium chlorite of 100 parts of weight, the attapulgite of 250 parts of weight are mixed, again solid acid and the stabilizing agent that makes fully mixed, add and wherein stir, the gelatin that adds 75 parts of weight at last, stir, each gram confection is pressed and is a slice, and 5 air permeable wrapping bags on chip are the novel mildew resistant flake products.

Claims

1. novel mildew resistant tablet is a solid slow-release type chlorine dioxide leather mildew resistant slice, belongs to the antibacterial mildew inhibitor product.

2. the described solid slow-release type of claim 1 chlorine dioxide leather antibacterial mold proof product fabrication material package is drawn together solid sodium chlorite, solid acid, stabilizing agent, binder and desiccant, the composition solid sodium chlorite that it is characterized in that filling a prescription is in the presence of desiccant, mix with solid acid and stabilizing agent, add binder again, compressing tablet is used the breathable plastics wrapper.

3. the shared weight ratio of the described solid sodium chlorite of claim 2 is 5%～30%.

4. the described solid acid of claim 2 can be niter cake, citric acid, stearic acid, tartaric acid or oxalic acid, and the proportioning of solid acid and sodium chlorite is 1: 1～5: 1 (weight ratio).

5. the described stabilizing agent of claim 2 comprises magnesium sulfate, polyacrylamide, polyethylene glycol, and its proportioning is: 5.5: 1: 0.2～7.5: 1: 0.4 (weight ratio) mixes and makes stabilizing agent, and the shared weight ratio of stabilizing agent is 3%～20%.

6. the described binder of claim 2 can be starch or gelatin, and the shared weight ratio of binder is 10%～15%.

The described desiccant of claim 2 can silica gel, attapulgite, 4A molecular sieve or bentonite, the shared weight ratio of desiccant is 30%～50%.

8. the moisture of the described various materials of claim 2 must be less than 0.2% (W/W).

9. must under the condition of envionmental humidity, operate according to claim 2,3,4,5,6,7,8 described materials less than 40%R.H..