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Hydrophilic pressure-sensitive adhesive containing forsythia volatile oil and preparation method thereof

A volatile oil, pressure-sensitive adhesive technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., to achieve obvious economic benefits and promote wound healing.

Inactive Publication Date: 2016-08-24
广州市科济医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report pointing out that the volatile oil of forsythia is used to prepare pressure-sensitive adhesives.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of polyurethane

[0021] Add polytetrahydrofuran diol into the reactor, melt at 100°C to remove water under reduced pressure, and at 65°C and normal pressure, add isophorone diisocyanate at a molar ratio of isocyanate group / alcohol hydroxyl group of 115:210 , and add butanone as a solvent, react at 80°C for 1.5h, then add an amine chain extender dissolved in butanone to the system, react for 2h, remove the butanone solvent under reduced pressure, and discharge to obtain a crude polyurethane. spare;

[0022] (2) Preparation of hydrophilic polyurethane pressure-sensitive adhesive containing volatile oil of forsythia

[0023] Mix 24 parts of polyurethane crude product prepared in step (1) with 26 parts of alginate in an open mill for 30 minutes, then mix 4 parts of chitosan, 0.1 part of forsythia volatile oil and 2,6-di-tert-butylmethylphenol Add 1 part into it and continue mixing for 15 minutes to make it evenly dispersed, and then use a flat vulcanizer ...

Embodiment 2

[0025] (1) Preparation of polyurethane

[0026] Add polytetrahydrofuran diol into the reactor, melt at 105°C to remove water under reduced pressure, and at 66°C and normal pressure, add isophorone diisocyanate at a molar ratio of isocyanate group / alcohol hydroxyl group of 115:210 , and add butanone as a solvent, react at 82°C for 1.6h, then add an amine chain extender dissolved in butanone to the system, react for 2h, remove the butanone solvent under reduced pressure, and discharge to obtain a crude polyurethane product, spare;

[0027] (2) Preparation of hydrophilic polyurethane pressure-sensitive adhesive containing volatile oil of forsythia

[0028] Mix 30 parts of polyurethane crude product prepared in step (1) with 30 parts of alginate in an open mill for 32 minutes, then mix 8 parts of chitosan, 1 part of forsythia volatile oil and 2,6-di-tert-butylmethylphenol Add 2 parts and continue kneading for 18 minutes to make it evenly dispersed, and then use a flat vulcanizer...

Embodiment 3

[0030] (1) Preparation of polyurethane

[0031] Add polytetrahydrofuran diol into the reactor, melt at 110°C to remove water under reduced pressure, and at 68°C and normal pressure, add isophorone diisocyanate at a molar ratio of isocyanate group / alcohol hydroxyl group of 115:210 , and add butanone as a solvent, react at 84°C for 1.8h, then add an amine chain extender dissolved in butanone to the system, react for 2h, remove the butanone solvent under reduced pressure, and discharge to obtain a crude polyurethane product, spare;

[0032] (2) Preparation of hydrophilic polyurethane pressure-sensitive adhesive containing volatile oil of forsythia

[0033] Mix 38 parts of polyurethane crude product prepared in step (1) with 35 parts of alginate in an open mill for 35 minutes, then mix 12 parts of chitosan, 5 parts of forsythia volatile oil and 2,6-di-tert-butylmethylphenol Add 3 parts and continue kneading for 22 minutes to make it evenly dispersed, and then use a flat vulcaniz...

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PUM

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Abstract

The invention provides a hydrophilic pressure-sensitive adhesive containing fructus forsythiae volatile oil and a preparation method thereof. The pressure-sensitive adhesive comprises the following components in parts by weight: 24 to 46 parts of polyurethane, 26 to 40 parts of alginate, 4 to 16 parts of chitosan, 0.1 to 10 parts of fructus forsythiae volatile oil, and 1 to 4 parts of 2,6-di-tert-butylmethyl phenol. The polyurethane is prepared through the condensation reactions between polytetramethylene glycol and isophorone diisocyanate. The preparation method comprises the following steps: (1) preparing polyurethane; (2) preparing a hydrophilic polyurethane pressure-sensitive adhesive containing fructus forsythiae volatile oil. The hydrophilic pressure-sensitive adhesive has the curative functions of preventing infection and promoting injury heal, has the advantages of non-toxicity, non-irritant property, and no allergy or peeling reactions, is a safe and reliable medical pressure-sensitive adhesive, and has a prominent economic profit.

Description

technical field [0001] The invention relates to the field of biomedical pressure-sensitive adhesives, in particular to a hydrophilic pressure-sensitive adhesive containing forsythia volatile oil and a preparation method thereof. Background technique [0002] With the advancement of medicine, the clinical requirements for the effect of surgical techniques and auxiliary materials are getting higher and higher. The philosophy of modern medicine is to minimize the suffering of patients. To recover the patient as quickly as possible, and while restoring function to the greatest extent, it is hoped that the appearance will also be restored perfectly. Therefore, the continuous increase of clinical demand has promoted the development of adhesives and the application of adhesive technology in clinic. [0003] Pressure-sensitive adhesive is a kind of adhesive that produces viscosity under pressure and leaves no residue after pressure loss, and is the main auxiliary material of trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/28A61L15/26A61L15/46C09J175/08C09J105/04C09J105/08C09J11/06C08G18/75C08G18/48
Inventor 刘大学李永超郭玉芹
Owner 广州市科济医疗器械有限公司
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