Special sweat-resistant waterproof hot-melt pressure-sensitive adhesive for adhesive bandage and preparation method thereof

A hot-melt pressure-sensitive adhesive, waterproof technology, applied in the field of pressure-sensitive adhesives, can solve the problems of poor waterproofness, inability to effectively block external sewage, waterproofness and air permeability cannot be well unified, etc. Application value and development prospects, the effect of good waterproof and breathable

Inactive Publication Date: 2020-01-24
RUGAO JIAHAO HOT MELT ADHESIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The adhesives used in the current band-aids on the market are usually hot-melt pressure-sensitive adhesives and natural rubber, of which natural rubber needs to use a large amount of solvents in the production process, there are certain risks in the production process, and will cause pollution to the environment; and hot-melt pressure-sensitive adhesives Glue is becoming more and more popular because of its environmental protection
However, the problem with band-aids made of hot-melt pressure-sensitive adhesives is that the waterproofness and air permeability cannot be well unified. The sweat from the surrounding skin cannot be discharged; when the product has good air permeability, the water resistance is poor, and it cannot effectively block external sewage, which will cause secondary infection of the wound

Method used

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  • Special sweat-resistant waterproof hot-melt pressure-sensitive adhesive for adhesive bandage and preparation method thereof

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Experimental program
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preparation example Construction

[0057] In a preferred embodiment, the preparation method of the modified petroleum resin comprises the steps of:

[0058] Step a, in parts by mass, add 18-22 parts of petroleum resin and 1-2 parts of plasticizer into the stirring device, and stir at 90-110° C. at a stirring speed of 300-400 rpm for 30-60 minutes to obtain mixture A;

[0059] Step b, adding 1-2 parts of catalyst and 4-6 parts of methyl cinnamaldehyde to the mixture A obtained in step a, stirring at 90-110° C. at a stirring speed of 200-350 rpm for 2-4 hours to obtain mixture B;

[0060] In step c, after washing, filtering and drying the mixture B obtained in step b, the modified petroleum resin is obtained.

[0061] In a more preferred embodiment, the preparation method of the modified petroleum resin comprises the steps of:

[0062] Step a, in parts by mass, add 20 parts of petroleum resin and 1.5 parts of plasticizer into the stirring device, and stir at 100° C. at a stirring speed of 350 rpm for 45 minutes ...

Embodiment 1

[0099] Embodiment 1 of the present invention provides a hot-melt pressure-sensitive adhesive, including the following raw materials in parts by mass: 35 parts of styrene resin, 16 parts of filler, 20 parts of petroleum resin, 6 parts of dispersant, and 2 parts of anti-aging agent.

[0100] The styrene resin is a styrene-isoprene-styrene triblock copolymer; the styrene-isoprene-styrene triblock copolymer is a styrene-isoprene- Isoprene-styrene triblock copolymer.

[0101] The filler is a plastic filler; the plastic filler is polyethylene wax.

[0102] The petroleum resin is a modified petroleum resin; the petroleum resin is a methyl cinnamaldehyde modified petroleum resin.

[0103] The preparation method of described modified petroleum resin comprises the steps:

[0104] Step a, in parts by mass, add 20 parts of petroleum resin and 1.5 parts of plasticizer into the stirring device, and stir at 100° C. at a stirring speed of 350 rpm for 45 minutes to obtain mixture A;

[0105] ...

Embodiment 2

[0113] Embodiment 2 of the present invention provides a hot-melt pressure-sensitive adhesive, including the following raw materials in parts by mass: 30 parts of styrene resin, 14 parts of filler, 18 parts of petroleum resin, 5 parts of dispersant, and 1 part of anti-aging agent.

[0114] The styrene resin is a styrene-isoprene-styrene triblock copolymer; the styrene-isoprene-styrene triblock copolymer is a styrene-isoprene- Isoprene-styrene triblock copolymer.

[0115] The filler is a plastic filler; the plastic filler is polyethylene wax.

[0116] The petroleum resin is a modified petroleum resin; the petroleum resin is a methyl cinnamaldehyde modified petroleum resin.

[0117] The preparation method of described modified petroleum resin is with embodiment 1.

[0118] The petroleum resin is C5 resin; the plasticizer is acetyl tributyl citrate; and the catalyst is aluminum trichloride.

[0119] The dispersant is naphthenic oil; the antioxidant is antioxidant 1010.

[0120...

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Abstract

The invention discloses a special sweat-resistant waterproof hot-melt pressure-sensitive adhesive for an adhesive bandage. The special sweat-resistant waterproof hot-melt pressure-sensitive adhesive comprises the following raw materials, by mass, 30-40 parts of styrene resin, 14-18 parts of a filler, 18-22 parts of petroleum resin, 5-7 parts of a dispersing agent and 1-3 parts of an anti-aging agent. Experimental test results prove that the hot-melt pressure-sensitive adhesive prepared in the invention shows good water resistance and air permeability in water resistance and air permeability tests; meanwhile, the adhesive shows moderate peel strength in 180-degree peel strength tests, so the adhesive is firm in adhesion and does not cause pain when being peeled off from skin. Besides, the hot-melt pressure-sensitive adhesive prepared in the invention is safe and non-irritant, has no residue when being peeled from skin, allows the use experience of the adhesive bandage to be good, and has very high practical application value and development prospects.

Description

technical field [0001] The invention relates to the field of pressure-sensitive adhesives, in particular to a special hot-melt pressure-sensitive adhesive for sweat-resistant and waterproof band-aids and a preparation method thereof. Background technique [0002] Band-aid, also known as benzalkonium chloride patch, is attached with drug-soaked gauze in the middle, which is used to stick on the wound to protect the wound and temporarily stop bleeding. It is a common emergency medical product in people's daily life. [0003] The adhesives used in the current band-aids on the market are usually hot-melt pressure-sensitive adhesives and natural rubber, of which natural rubber needs to use a large amount of solvents in the production process, there are certain risks in the production process, and will cause pollution to the environment; and hot-melt pressure-sensitive adhesives Glue is becoming more and more popular because of its environmental protection. However, the problem w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J153/02C09J157/02C09J11/08C09J11/06
CPCC08L2205/035C09J11/06C09J11/08C09J153/02C08L57/02C08L23/06C08K5/11C08K5/1345
Inventor 王文敏黄小军
Owner RUGAO JIAHAO HOT MELT ADHESIVE
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