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Medical hot melt adhesive and preparation method thereof

A technology of hot-melt adhesive and formula, which is applied in the field of medical hot-melt adhesive and its preparation, can solve the problems of poor water and sweat resistance and affect the service life, and achieve strong repeated stickiness, good sweat resistance and short preparation cycle shortened effect

Active Publication Date: 2015-11-25
佛山南宝高盛高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing hot-melt pressure-sensitive adhesives perform poorly in terms of skin affinity, air permeability, repeatability, and water and sweat resistance, which affects the service life

Method used

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  • Medical hot melt adhesive and preparation method thereof
  • Medical hot melt adhesive and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0027] Preparation of grafted products of SIS and PEG:

[0028] In a three-necked flask equipped with a reflux condenser, an electric stirrer, and a dropping funnel, add 60 parts of a mixture of purified SIS and toluene solvent, wherein the weight ratio of SIS to toluene is 5:1; start the stirrer and a water bath, after raising the temperature to 60±5°C, dropwise add 10 parts of ethyl acetate mixture dissolved in BPO, wherein the weight ratio of BPO to ethyl acetate is 20:1; continue to stir, and raise the temperature to 80 After ℃, stir at constant temperature for 0.5h, start to drop 30 parts of the mixed solution of MMA, PEG and BMA dissolved in BPO, the weight ratio of BPO, MMA, PEG and BMA is 1:3:20:3, the molecular weight of PEG It was 400; under the protection of nitrogen, after 20 hours of stirring at constant temperature, the temperature was naturally lowered and cooled to about 50°C, and the grafted product of SIS and PEG was obtained.

Embodiment 1

[0030] Utilize above-mentioned SIS and PEG graft product to prepare medical hot-melt adhesive, its raw material is composed according to the following parts by weight: 30 parts of graft product of SIS and PEG, 12 parts of naphthenic oil, 1 part of antioxidant, 52 parts of hydrogenated petroleum resin, 5 copies of SAP.

[0031] Among them, naphthenic oil 4010 is selected, which has good compatibility; antioxidant 1010 is selected; C5 hydrogenated petroleum resin is selected, and the hydrogenated petroleum resin has high aging resistance and will not form spots when heated.

[0032] The specific properties of the obtained medical hot melt adhesive are shown in Table 1.

Embodiment 2

[0034] Utilize above-mentioned SIS and PEG graft product to prepare medical hot-melt adhesive, its raw material is composed according to the following parts by weight: 45 parts of graft product of SIS and PEG, 12 parts of naphthenic oil, 1 part of antioxidant, 38 parts of hydrogenated petroleum resin, 5 copies of SAP.

[0035] Among them, use naphthenic oil 4010, antioxidant 1010, C5 hydrogenated petroleum resin.

[0036] The specific properties of the obtained medical hot melt adhesive are shown in Table 1.

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Abstract

The invention discloses a medical hot melt adhesive. The medical hot melt adhesion comprises the following raw materials in parts by weight: 30-70 parts of an SIS and PEG grafted product, 10-20 parts of naphthenic oil, 1-5 parts of an antioxidant, 30-60 parts of hydrogenated petroleum resin and 5-10 parts of SAP. The medical hot melt adhesive is prepared by blending an SIS elastomer and a PEG hydrophilic polymer and mixing a hydrophilic filler, a plasticizer and resin and is good in sweat resistance, strong in repeated adhesion and excellent in air permeability. The invention further discloses a preparation method of the medical hot melt adhesive, wherein the preparation method is low in energy consumption and short in reaction time.

Description

technical field [0001] The invention relates to a hot melt adhesive, in particular to a medical hot melt adhesive and a preparation method thereof. Background technique [0002] Medical hot-melt adhesives have long been used to bond medical supplies, and are now widely used as carriers for drugs and skin. Hot-melt pressure-sensitive adhesives are sensitive to pressure and can be bonded to adherends with a little pressure. Now they are widely used in various medical external materials such as wound stickers, infusion patches, sports bandages, and plaster substrates. Existing hot-melt pressure-sensitive adhesives perform poorly in terms of skin affinity, air permeability, repeatability, and water and sweat resistance, thereby affecting the service life. Contents of the invention [0003] The purpose of the present invention is to avoid the deficiencies in the prior art and provide a medical hot-melt adhesive with good affinity, air permeability, repeated sticking property, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/00C09J151/08C09J157/02C09J191/00C08F287/00C08F283/06C08F220/14C08F220/18A61K47/44A61K9/70A61L15/58
Inventor 任东翔曹少波吴永升
Owner 佛山南宝高盛高新材料有限公司
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