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A kind of instant antiseptic granule and preparation method thereof

A preservative and instant technology, applied in the fields of botanical equipment and methods, fungicides, biocides, etc., can solve the problems of difficult and rapid release of antibacterial agents, inability to comprehensively and quickly sterilize, and difficult water flow, etc., and achieves good promotion and application prospects. Easy to operate and ensure water-soluble effect

Active Publication Date: 2021-11-02
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under some special environmental conditions, such as the microgravity conditions in space, water is not easy to flow, and the metal ion antibacterial agent carried by this kind of mineral carrier is not easy to release the antibacterial agent quickly in a short time, and cannot comprehensively and quickly sterilize

Method used

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  • A kind of instant antiseptic granule and preparation method thereof
  • A kind of instant antiseptic granule and preparation method thereof
  • A kind of instant antiseptic granule and preparation method thereof

Examples

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preparation example Construction

[0033] Preparation of Aqueous Binder Solutions. The binder is mixed with water at a content of 0.5wt% to 15wt% (the content of the binder refers to the mass ratio of the binder to the aqueous solution of the binder), and placed in a heater to heat and stir until the binder dissolve. If the binder content is too low, the bonding effect will be poor; if the binder content is too high, the binder and silver nitrate cannot be mixed uniformly, or the tablet forming and the dissolution rate of the preservative particles will be affected. The temperature of heating and stirring depends on the molecular type of the binder until the binder dissolves. Since each water-soluble polymer has a different thermal upper limit temperature, the heating temperature varies with the type of water-soluble polymer, but it should be lower than its thermal upper limit temperature to prevent property changes. The binder used is a water-soluble polymer, including gum arabic, carboxymethyl cellulose, hy...

Embodiment 1

[0039] Preparation of Preservative Granules (Ag-PEG):

[0040] Mix polyethylene glycol (PEG-6000) with water at a content of 0.5 wt %, place in a heater and heat and stir at 60° C. until the polyethylene glycol dissolves. Add 2 mL of 0.5 wt % polyethylene glycol solution to 200 g of silver nitrate, grind and dry at 60° C. for 1 h to obtain a rough mixture. The rough mixture is put into a ball mill tank for ball milling. The ball milling parameters are: the ratio of silver nitrate to balls is 100g:500g, the speed of the ball mill is 20rpm, and the ball milling time is 5min. Transfer the ball mill powder to a mesh sieve for sieving, use a double-layer mesh sieve, the mesh number of the upper mesh is 20 mesh, and the mesh number of the lower mesh is 150 mesh, keep the powder on the 150 mesh mesh, and then 60 °C Dry for 0.5h to obtain granulated powder. The granulated powder was compressed into tablets using a multi-punch tablet machine (pressure 28kN) into granules, and then va...

Embodiment 2

[0046] Preparation of preservative granules (Ag-PVA):

[0047] Mix polyvinyl alcohol (PVA, type 1788, degree of alcoholysis 87% to 89%) with water at a content of 5 wt %, place in a heater and heat and stir at 80° C. until the polyvinyl alcohol dissolves. Add 20 mL of 5 wt % polyvinyl alcohol solution to 200 g of silver nitrate, grind and dry at 60° C. for 1 h to obtain a rough mixture. The rough mixture is put into a ball mill tank for ball milling. The ball milling parameters are: the ratio of silver nitrate to balls: 100g:750g, the speed of the ball mill is 30rpm, and the milling time is 5min. Transfer the ball mill powder to a mesh sieve for sieving, use a double-layer mesh sieve, the mesh number of the upper mesh is 40 mesh, and the mesh number of the lower mesh is 100 mesh, keep the powder on the 100 mesh mesh, and then 60 °C Dry for 0.5h to obtain granulated powder. The granulated powder was compressed into pellets using a multi-punch tablet machine (with a pressure o...

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Abstract

The invention relates to an instant preservative granule and a preparation method thereof. The instant preservative granules contain silver nitrate and a binder, the mass fraction of silver nitrate in the instant preservative granules is 85wt% to 99.995wt%, and the mass fraction of the binder is 0.005wt% to 15wt%; The binder is a water-soluble polymer, and the water-soluble polymer includes gum arabic, carboxymethyl cellulose, hydroxyethyl cellulose, polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, polyvinyl alcohol, polyma At least one of toric anhydride, polyquaternary ammonium salt, polyethylene glycol, preferably polyvinyl alcohol.

Description

technical field [0001] The present invention relates to a kind of instant antiseptic granule and preparation method thereof, specifically, it relates to a kind of use silver nitrate as antibacterial antiseptic, water-soluble macromolecule as binding agent, successively go through coarse mixing, granulation, tablet forming A method for preparing preservative granules belongs to the technical field of antibacterial and antiseptic. Background technique [0002] A large number of viruses, bacteria, fungi and other microorganisms in the living environment of people can directly lead to the occurrence and infection of many diseases. The spread and spread of harmful microorganisms have caused hidden dangers and threats that cannot be ignored for human health. How to prevent them from harming human beings And the infringement of the living environment is very important. [0003] The use of antibacterial agents to kill and inhibit the growth and reproduction of harmful microorganism...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01N25/24A01N25/34A01P1/00A01P3/00
CPCA01N25/24A01N25/34A01N59/16
Inventor 祝迎春王云丽王铭邵怡然
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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