Hydrophilic polyurethane pressure-sensitive adhesive for skins, and preparation method thereof

A technology of hydrophilic polyurethane and pressure-sensitive adhesive, applied in the fields of application, medical science, absorbent pads, etc., to achieve the effect of good initial tack, no residue, and strong sticking force

Active Publication Date: 2015-04-08
WEIXIN INDAL & TRADE GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, polyurethane pressure-sensitive adhesives can only be applied to fields that do not require high peel strength and initial adhesion. It has become a research hotspot to modify polyurethane pressure-sensitive adhesives to improve their performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A hydrophilic polyurethane pressure-sensitive adhesive for skin, comprising the following components in parts by weight: 50 parts of polyurethane, 10 parts of liquidambar resin, 5 parts of sodium alginate, 5 parts of gelatin, 5 parts of fibrin, and 15 parts of starch , 1 part of methacryloyl ethyl sulfobetaine, 1 part of triethyl citrate, 1 part of polyethylene glycol dimethyl ether.

[0018] The preparation method of hydrophilic polyurethane pressure-sensitive adhesive for skin is as follows:

[0019] (1) each component is taken by weight;

[0020] (2) Mix polyurethane, liquidambar resin, sodium alginate and gelatin in an open mixer for 50 minutes, and then mix fibrin, starch, methacryloyl ethyl sulfobetaine, triethyl citrate and polyester Add ethylene glycol dimethyl ether and continue kneading for 30 minutes to make it uniformly dispersed, and then use a flat vulcanizer to hot-press it into the desired thickness under the conditions of vulcanization temperature of 3...

Embodiment 2

[0022] A hydrophilic polyurethane pressure-sensitive adhesive for skin, comprising the following components in parts by weight: 60 parts of polyurethane, 16 parts of liquidambar resin, 8 parts of sodium alginate, 7 parts of gelatin, 8 parts of fibrin, and 20 parts of dextrin Parts, 5 parts of methacryloyl ethyl sulfobetaine, 2 parts of triethyl citrate, 1 part of polyethylene glycol dimethyl ether.

[0023] The preparation method of hydrophilic polyurethane pressure-sensitive adhesive for skin is as follows:

[0024] (1) each component is taken by weight;

[0025] (2) Mix polyurethane, liquidambar resin, sodium alginate and gelatin in an open mixer for 50 minutes, then mix fibrin, dextrin, methacryloyl ethyl sulfobetaine, triethyl citrate and Add polyethylene glycol dimethyl ether and continue mixing for 30 minutes to make it evenly dispersed, and then use a flat vulcanizer to hot press it into the required thickness under the conditions of vulcanization temperature of 36°C, ...

Embodiment 3

[0027] A hydrophilic polyurethane pressure-sensitive adhesive for skin, comprising the following components in parts by weight: 62 parts of polyurethane, 18 parts of liquidambar resin, 10 parts of sodium alginate, 8 parts of gelatin, 9 parts of fibrin, and 22 parts of starch , 6 parts of methacryloyl ethyl sulfobetaine, 2 parts of triethyl citrate, 2 parts of polyethylene glycol dimethyl ether.

[0028] The preparation method of hydrophilic polyurethane pressure-sensitive adhesive for skin is as follows:

[0029] (1) each component is taken by weight;

[0030] (2) Mix polyurethane, liquidambar resin, sodium alginate and gelatin in an open mixer for 55 minutes, and then mix fibrin, starch, methacryloyl ethyl sulfobetaine, triethyl citrate and polyester Add ethylene glycol dimethyl ether and continue kneading for 45 minutes to make it uniformly dispersed, and then use a flat vulcanizer to hot-press it into the desired thickness under the conditions of vulcanization temperature ...

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PUM

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Abstract

The invention provides a hydrophilic polyurethane pressure-sensitive adhesive for skins, and a preparation method thereof. The pressure-sensitive adhesive comprises polyurethane, sweetgum resin, alginate, gelatin, fibrous proteins, plant polysaccharides, methacryloylethyl sulfobetaine, triethyl citrate and polyethylene glycol dimethyl ether. The preparation method comprises the following steps: weighing all the above components according to weight parts; mixing polyurethane with sweetgum resin, alginate and gelatin in an open mill, adding the fiber proteins, the plant polysaccharides, methacryloylethyl sulfobetaine, triethyl citrate and polyethylene glycol dimethyl ether, continuously mixing for uniform dispersion, and carrying out hot pressing by using a plate vulcanizing machine to form the pressure-sensitive adhesive with desired thickness. Compared with pressure-sensitive adhesives in the prior art, the acrylic medical pressure-sensitive adhesive prepared in the invention has the advantages of good initial tack, low peel strength, no sensitization, no residue and very strong permanent adhesion.

Description

technical field [0001] The invention relates to the field of biomedical pressure-sensitive adhesives, in particular to a hydrophilic polyurethane pressure-sensitive adhesive for skin and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive is a type of adhesive that can be firmly bonded to the adherend only by applying a slight pressure. Because the pressure-sensitive adhesive has a certain initial tack and stickiness, and can be used repeatedly without pollution, and has no pollution to the adhered surface after peeling off, it has been widely used in electronic insulation, electronic component processing, and color printing. , military anti-drug products, automotive interiors and medical and many other fields. Among them, medical pressure-sensitive adhesives have particularly high performance requirements, which need to meet: (1) good adhesion to various skin types (dry and wet); (2) can be removed without leaving any residue or causing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L24/10A61L24/04A61L24/08A61L15/58
Inventor 李苏杨徐勤霞
Owner WEIXIN INDAL & TRADE GUANGZHOU
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