Anti-allergic pressure sensitive adhesive for medical bandages, and preparation method of anti-allergic pressure sensitive adhesive

A technology of allergy pressure-sensitive adhesives and bandages, applied in bandages, medical science, absorbent pads, etc., can solve problems such as allergies, itching, troubled patients, etc., and achieve the effect of enhanced peel strength and moderate peel strength

Inactive Publication Date: 2018-12-21
安徽玉然经编科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the pressure-sensitive adhesive is applied to the medical bandage and directly contacts the skin, it often causes allergies and itching, which bothers the patients

Method used

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  • Anti-allergic pressure sensitive adhesive for medical bandages, and preparation method of anti-allergic pressure sensitive adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An antiallergic pressure-sensitive adhesive for medical bandages, comprising the following raw materials by weight:

[0021] Chinese herbal medicine extract 10, chitosan 10, acetic acid solution 4, gallic acid 3, polyvinyl alcohol 5, methacrylic acid 40, initiator BPO 0.58;

[0022] The mass concentration of the acetic acid solution is 2%.

[0023] Further, its preparation method comprises the following steps:

[0024] (1) Add chitosan to the traditional Chinese medicine extract, heat to 70°C, add acetic acid solution dropwise, and stir at 300rpm for 3 hours, let it stand for defoaming, and carry out wet spinning at 25°C to obtain Ice water is used as a coagulation bath, the fibers are collected and spun, and crushed to a particle size of less than 50 μm;

[0025] (2) Add gallic acid into distilled water 10 times its volume, heat to boiling, stir and dissolve at 300rpm, then cool down to 85°C, add polyvinyl alcohol to it, continue stirring for 20min, and then add meth...

Embodiment 2

[0031] An antiallergic pressure-sensitive adhesive for medical bandages, comprising the following raw materials by weight:

[0032] Chinese herbal medicine extract 20, chitosan 15, acetic acid solution 5, gallic acid 4, polyvinyl alcohol 7, methacrylic acid 45, initiator BPO 0.7;

[0033] The mass concentration of the acetic acid solution is 3%.

[0034] Further, its preparation method comprises the following steps:

[0035] (1) Add chitosan to the traditional Chinese medicine extract, heat to 80°C, add acetic acid solution dropwise, stir and react at 400rpm for 4h, let it stand for defoaming, and carry out wet spinning at 27°C to obtain Ice water is used as a coagulation bath, the fibers are collected and spun, and crushed to a particle size of less than 50 μm;

[0036] (2) Add gallic acid into distilled water 15 times its volume, heat to boiling, stir and dissolve at 400rpm, then cool down to 90°C, add polyvinyl alcohol to it, continue stirring for 25min, and then add meth...

Embodiment 3

[0042] An antiallergic pressure-sensitive adhesive for medical bandages, comprising the following raw materials by weight:

[0043] Chinese herbal medicine extract 30, chitosan 20, acetic acid solution 8, gallic acid 5, polyvinyl alcohol 10, methacrylic acid 50, initiator BPO 0.8;

[0044] The mass concentration of the acetic acid solution is 5%.

[0045] Further, its preparation method comprises the following steps:

[0046] (1) Add chitosan to the traditional Chinese medicine extract, heat to 85°C, add acetic acid solution dropwise, stir and react at 500rpm for 4h, let it stand for defoaming, and carry out wet spinning at 28°C to obtain Ice water is used as a coagulation bath, the fibers are collected and spun, and crushed to a particle size of less than 50 μm;

[0047] (2) Add gallic acid into distilled water 20 times its volume, heat to boiling, stir and dissolve at 500rpm, then cool down to 94°C, add polyvinyl alcohol to it, continue stirring for 30min, and then add met...

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Abstract

The invention discloses anti-allergic pressure sensitive adhesive for medical bandages, and a preparation method of the anti-allergic pressure sensitive adhesive. The obtained pressure-sensitive adhesive has good anti-allergic and bactericidal effects, is moderate in peel strength, is suitable for being applied to the medical self-adhesive bandages, and can avoid the phenomenon that patients are allergic when using the self-adhesive bandages. The anti-allergic pressure sensitive adhesive is prepared by firstly freezing Chinese herbal medicines and then carrying out reflux purification sequentially by using ethanol and distilled water, so that the effective components in the Chinese herbal medicines are fully retained, and the maximum extraction and utilization of the effective components are guaranteed; Chinese herbal medicine extracts are used for swelling and spinning chitosan, so that the chitosan fully absorbs the Chinese herbal medicine extracts and is coated with the Chinese herbal medicine extracts; after spinning, the product is fibrous and participates in a reaction, so that the Chinese herbal medicine extracts are evenly distributed in the adhesive, and the problem that when being directly added, the Chinese herbal medicines can not participate in the reaction of adhesive can be avoided; furthermore, the adhesive is endowed with antibacterial and anti-allergic effects, and the peel strength of the adhesive is enhanced.

Description

technical field [0001] The invention belongs to the technical field of medical adhesives, in particular to an anti-allergic pressure-sensitive adhesive for medical bandages and a preparation method thereof. Background technique [0002] In biomedical polymer materials, pressure-sensitive adhesives (PSA) are a type of pressure-sensitive adhesives that are very sensitive to pressure and can be bonded by applying a little pressure without resorting to heat or solvents. adhesive. Its characteristics are that it is easy to stick, not difficult to remove, peels without damage, will not degrade in the general environment, and will not dry for a long time, so it can also be called self-adhesive. Pressure-sensitive adhesives are viscoelastic substances that are both liquid viscous and solid elastic. It is precisely because of the above characteristics of pressure-sensitive adhesives that different materials such as wood, fabrics, and metals or the same material can be bonded with p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/58A61L15/44A61L15/46A61L15/40A61L15/28A61L15/24A61L15/20C08F251/00C08F220/06
CPCA61L15/20A61L15/24A61L15/28A61L15/40A61L15/44A61L15/46A61L15/58A61L2300/30A61L2300/404C08F220/06C08F251/00C08L5/08C08L29/04
Inventor 张明
Owner 安徽玉然经编科技有限公司
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