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A kind of preparation method of liquid band-aid

A band-aid and liquid technology, applied in medical science, bandages, etc., can solve the problem of low water vapor transmission rate, achieve the effect of promoting wound healing, good water resistance, and high water resistance

Active Publication Date: 2021-06-29
绍兴百立盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid band-aid uses polyvinyl alcohol resin as a film-forming substance, which has a fast film-forming speed and can be isolated and waterproof, but has the disadvantage of low water vapor transmission rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Take by weighing 10g of styrene-maleic anhydride copolymer (SMA-EF-80 of U.S. Cray Valley Company) at 20°C and disperse in 60% methylcyclohexane and 40% isopropanol by volume percentage In the mixed solvent of composition, make the polymer solution of mass percentage 8%;

[0039](2) Weigh 2g rosin resin (Shanghai Songxinlin Products Co., Ltd., X grade gum rosin) and disperse it in a mixed solvent composed of 60% methylcyclohexane and 40% isopropanol by volume percentage to make mass percentage 3% thickener solution;

[0040] (3) Add the thickener solution prepared in step (2) into the polymer solution prepared in step (1) at a volume ratio of 1:1, and then add 0.1 ppm of graphene / silver composite (Nanjing Xianfeng Nano Material Technology Co., Ltd. Co., Ltd., XF071), uniformly mixed to make a liquid band-aid, that is, the concentration of the graphene / silver compound in the liquid band-aid is 0.1mg / L.

Embodiment 2

[0042] (1) Under nitrogen protection, add 20 parts of styrene-ethylene-butadiene copolymer (Baling Petrochemical, SEBS YH-503) to 80 parts of 1,2-dichloroethane in a reaction kettle at 10°C in, stirred until dissolved, then added 1 part of chlorosulfonic acid, stirred and reacted for 18 hours, added 200 parts of ethanol for precipitation washing, and dried to obtain a copolymer composed of styrene-ethylene-butadiene and 4-vinylbenzenesulfonic acid. thing.

[0043] (2) Weigh 10 g of a copolymer composed of styrene-ethylene-butadiene and 4-vinylbenzenesulfonic acid at 20°C and disperse it in a mixture composed of 70% cyclohexane and 30% isopropanol by volume percentage In the solvent, make the polymer solution of 8% by mass percent;

[0044] (3) Weigh 2g of polyethylene glycol (Liaoning Aoke Chemical Co., Ltd., PEG600) and disperse it in a mixed solvent consisting of 70% cyclohexane and 30% isopropanol by volume percentage to make 3% by mass thickener solution;

[0045] (4) A...

Embodiment 3

[0047] (1) Under nitrogen protection, 16 parts of liquid polybutadiene (Polyvest 110 from Evonik, Germany) was added to 85 parts of 1,2-dichloroethane in a reaction kettle at 60° C., and stirred until dissolved. Then add 4 parts of fumaric acid and 0.1 part of azobisisobutyronitrile, stir and react for 24 hours, add 300 parts of ethanol for precipitation washing, and dry to obtain a block polymer composed of butadiene and fumaric acid;

[0048] (2) Take by weighing 10g of block polymers composed of butadiene and fumaric acid at 20°C and disperse them in a mixed solvent consisting of 70% n-hexane and 30% isopropanol by volume percentage to make 8% by mass % polymer solution;

[0049] (3) Weigh 2g of tributyl citrate (Shandong Kexing Chemical Co., Ltd.) and disperse it in a mixed solvent consisting of 70% by volume of n-hexane and 30% of isopropanol to make 1% by mass of thickened agent solution;

[0050] (4) Add the thickener solution prepared in step (3) into the polymer sol...

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Abstract

The invention discloses a preparation method of a liquid band-aid, comprising: dispersing a block polymer composed of a non-polar segment and a polar segment into a mixed solvent composed of a non-polar solvent and a polar solvent to prepare a polymerized Thickener solution; disperse the thickener into a mixed solvent composed of non-polar solvent and polar solvent to make a thickener solution; add the thickener solution into the polymer solution, then add the bacteriostat, and mix evenly Afterwards, it is made into a liquid band-aid. The preparation method of the present invention is simple in process, and compared with traditional band-aids, the prepared liquid band-aids have the advantages of simple and convenient use, and are not limited by the size and position of the wound. High water vapor transmission rate and good water resistance provide a moist and sterile environment for the wound, better promote wound healing and shorten the healing time.

Description

technical field [0001] The invention relates to the field of antibacterial isolation medical materials, in particular to a preparation method of a liquid band-aid. Background technique [0002] Traditional band-aids are mostly composed of a long flat cloth adhesive plaster with a small piece of drug-soaked gauze or water-absorbing pad in the middle. It has the functions of stopping bleeding, protecting wounds, absorbing exudate, and keeping the wound dry. Obviously, such as unavoidable wound scab, poor waterproof and vapor permeability, etc., cannot meet the special needs of patients. As a high-end functional modern medical dressing, liquid band-aid is mainly made of raw materials such as biocompatible polymers, volatile solvents, and antibacterial agents. Inheriting the advantages of traditional band-aids such as hemostasis and wound protection, liquid band-aids also have the advantages of biodegradability and self-dissolution, no scab on the wound surface, protection of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L26/00
CPCA61L26/0019A61L26/0061A61L26/0066A61L2300/104A61L2300/404C08L53/00
Inventor 娄琪超王鹏飞徐意
Owner 绍兴百立盛新材料科技有限公司
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