Pressure-sensitive adhesive, pressure-sensitive adhesive tape, preparation method of the pressure-sensitive adhesive tape and medical dressing

A technology of pressure-sensitive adhesive and monomer, applied in the field of pressure-sensitive adhesive, to achieve the effects of high adhesive force, good water vapor transmission rate and low cost

Active Publication Date: 2015-02-18
明尼苏达矿业制造医用器材(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no acrylic pressure-sensitive adhesive that not only has high vapor permeability, but also has good adhesion, especially when used in wound dressings, it has good adhesion to dry and wet skin

Method used

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  • Pressure-sensitive adhesive, pressure-sensitive adhesive tape, preparation method of the pressure-sensitive adhesive tape and medical dressing
  • Pressure-sensitive adhesive, pressure-sensitive adhesive tape, preparation method of the pressure-sensitive adhesive tape and medical dressing
  • Pressure-sensitive adhesive, pressure-sensitive adhesive tape, preparation method of the pressure-sensitive adhesive tape and medical dressing

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Embodiment Construction

[0021] The acrylic pressure-sensitive adhesive of the present invention comprises a polymer formed by copolymerization of the following four monomers:

[0022] a). Hydrophilic acrylate monomers with hydroxyl or ethoxy groups;

[0023] b).Short-chain hydrophobic acrylate monomers, whose structural formula is CH 2 =CHCOOR 1 , R 1 is an alkyl group containing 1-5 carbon atoms;

[0024] c). Long-chain hydrophobic acrylate monomers whose structural formula is CH 2 =CHCOOR 2 , R 2 is an alkyl group containing 6-14 carbon atoms;

[0025] d). A propylene-based monomer having a polar group that can be copolymerized with the above-mentioned monomers a-c.

[0026] The copolymerization method may be a conventional radical polymerization method. In a specific embodiment, the specific conditions of the polymerization reaction are as follows:

[0027] Add all the monomers and solvents into a 1000-gallon reactor in sequence. The ratio of monomers and solvents is shown in Table 2. Sti...

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Abstract

The disclosed acrylate pressure sensitive adhesive is formed by a free radical polymerization of the following monomers: (a) a hydrophilic acrylic acid ester monomer which has a hydroxyl group or an ethoxy group, the amount of the hydrophilic acrylic acid ester monomer being 10 to 30% of the total weight of all monomers; (b) a short-chain hydrophobic acrylic acid ester monomer represented by formula CH2=CHCOOR1, where R1is an alkyl group having 1 to 5 carbon atoms, the amount of the short-chain hydrophobic acrylic acid ester monomer being 50 to 70% of the total weight of all monomers; (c) a long-chain hydrophobic acrylic acid ester monomer represented by formula CH2=CHCOOR2, where R2 is an alkyl group having 6 to 14 carbon atoms, the amount of the long-chain hydrophobic acrylic acid ester monomer being 10 to 35% of the total weight of all monomers; and (d) an acryl monomer having a polar group copolymerizable with the monomers (a) to (c), the amount of the acryl monomer being 0.5 to 5% of the total weight of all monomers.

Description

technical field [0001] The present invention relates to pressure-sensitive adhesives and their applications, more specifically, to acrylate pressure-sensitive adhesives and their applications as pressure-sensitive adhesive tapes and medical dressings. Background technique [0002] Acrylic pressure sensitive adhesives are widely used in various pressure sensitive tapes and medical dressings such as wound dressings. A wound dressing is a wound dressing, a material used to cover a sore, wound or other damage. The structure of a typical wound dressing includes a layer of pressure-sensitive adhesive coated on the backing, and a release film attached to the adhesive surface (see figure 1 ). Some wound dressings are water resistant but not vapor permeable, while others are both water resistant and vapor permeable. In recent years, with the advancement of science and the improvement of people's living standards, the latter wound dressing, which is both water-resistant and vapor-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J133/14C09J133/02C09J133/26C09J7/02A61L15/26A61L15/24A61L15/58C09J7/21C09J7/38
CPCC09J133/08C09J7/045A61L15/58C09J2400/263C09J2475/006C09J7/0217C09J2433/00C09J2201/622C09J7/38C09J7/385C09J7/21C09J2301/312C08L33/08
Inventor 王蔚南马静曹俊峰黄静
Owner 明尼苏达矿业制造医用器材(上海)有限公司
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