Addition reaction-curable silicone adhesive composition for skin patch and adhesive tape for skin patch

An addition-curing, addition-reaction technology, used in adhesives, adhesive additives, film/sheet-like adhesives, etc., can solve the problems of decreased adaptability of skin adhesives, decreased adhesive properties, and decreased adhesive force. , to achieve excellent reusability, excellent reusability and durability, and less decrease in adhesion

Active Publication Date: 2021-02-19
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]However, when cross-linking by the above method, although sufficient cohesive force can be obtained, sometimes the adhesive properties (tack, adhesive force) originally possessed by the silicone adhesive ) will decrease, and the adaptability of adhesives for skin attachment will decrease
On the other hand, when crosslinking is not performed, the cohesive force becomes insufficient, and the adhesive remains on the skin surface after peeling off
[0006] In addition, compared with acrylic and rubber-based adhesives, silicone adhesives are less likely to peel off body hair or cuticles of the skin when they are peeled off, but when they are attached again after peeling off, the adhesive force decreases. The problem

Method used

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  • Addition reaction-curable silicone adhesive composition for skin patch and adhesive tape for skin patch
  • Addition reaction-curable silicone adhesive composition for skin patch and adhesive tape for skin patch
  • Addition reaction-curable silicone adhesive composition for skin patch and adhesive tape for skin patch

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Embodiment

[0198] Hereinafter, the present invention will be specifically described with reference to Synthesis Examples, Examples, and Comparative Examples, but the present invention is not limited to the following Examples. In addition, in each example, the viscosity is a value at 25 degreeC, a part shows a mass part, and a characteristic value shows the measurement value obtained by the following test method. In addition, in each example, Me represents a methyl group, and Vi represents a vinyl group.

[0199]

[0200] (A) Ingredient

[0201] (A-1)

[0202] The dimethylpolysiloxane represented by the following formula has a viscosity of 4,000 mPa·s when dissolved in toluene at a concentration of 30% by mass, and both ends of the molecular chain are terminated with vinyl groups, and has a viscosity of 0.002 mol / 100 g. Amount of vinyl.

[0203] [Chemical formula 18]

[0204]

[0205] Here, o and p are numerical values ​​satisfying the above-mentioned viscosity.

[0206] (A-2) ...

Synthetic example 1

[0225] (A-1) (64.0 parts) as the (A1) component, (A-2) (16.0 parts) as the (A2) component, and (B) as the component were stirred at room temperature (25°C, the same below). (B-1) The solution consisting of (20.0 parts), n-heptane (66.1 parts), and ammonia water (0.5 part) was obtained for 12 hours, and the condensation reaction product of (A) component and (B) component was obtained. In addition, the (A-1) can be condensed with (B-1) because the SiOH group remains at the partially unblocked terminal. Therefore, (A-1) and (A-2) are condensed with (B-1) to obtain the condensation reaction product. Next, the condensation reaction product was refluxed while heating at about 100°C to 115°C for 6 hours, and ammonia and water were distilled off. After the obtained reaction product was left to cool, the component (F) (0.2 part) was added thereto, and n-heptane was added and mixed so that the solid content was about 60% by mass to synthesize a silicone adhesive base composition A. . ...

Synthetic example 2

[0227] (A-1) (16.0 parts) as the (A1) component, (A-2) (64.0 parts) as the (A2) component, and (B-1) (20.0 parts) as the (B) component were stirred at room temperature parts), n-heptane (66.4 parts) and ammonia water (0.5 parts) for 12 hours to obtain a condensation reaction product of (A) component and (B) component. Next, the condensation reaction product was refluxed while heating at about 100°C to 115°C for 6 hours, and ammonia and water were distilled off. After the obtained reaction product was left to cool, (F) component (0.2 part) was added thereto, and n-heptane was added and mixed so that the solid content was about 60% by mass to synthesize silicone adhesive base composition B .

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Abstract

The present invention is an addition reaction-curable silicone adhesive composition for a skin patch, which contains: (X) a diorganopolysiloxane which comprises a mixture or condensation reaction product of a component (A) and a component (B) and in which the (A1) / (A2) mass ratio is 90 / 10-15 / 85, (A1) being a diorganopolysiloxane in which the content of two or more alkenyl groups per molecule is not less than 0.0005 mol / 100 g and less than 0.15 mol / 100 g, (A2) being a diorganopolysiloxane which has a terminal SiOH group and has no alkenyl group; (B) an organopolysiloxane in which the R1 3SiO0.5unit / SiO2 unit molar ratio is 0.5-1.5; (C) an organohydrogenpolysiloxane containing three or more SiH groups per molecule; and (D) a platinum group metal-based catalyst. Provided by this configuration is an addition reaction-curable silicone adhesive composition for a skin patch, which has suitable cohesion and gives an adhesive layer that exhibits excellent re-adhesion, reworking properties and durability.

Description

technical field [0001] The present invention relates to an addition reaction-curable silicone adhesive composition for skin application, and an adhesive tape for skin application using a cured product of the composition. Background technique [0002] The polysiloxane constituting the silicone adhesive is excellent in heat resistance, cold resistance, weather resistance, electrical insulation, and chemical resistance because the main skeleton is composed of Si—O bonds with high bond energy. Therefore, it is used in harsh environments such as heat-resistant tapes, electrical insulating tapes, masking tapes for engineering, and flame-retardant mica tapes. In addition, silicone adhesives are used for skin sticking applications because of their air permeability and low irritation. [0003] For skin sticking applications, acrylic or rubber-based adhesives are often used. However, these adhesives have excessively high adhesion to the adherend such as the skin, excessively peeling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/26A61L15/58A61K9/70A61K47/34C09J7/38C09J11/02C09J183/05C09J183/06C09J183/07
CPCC08L83/04C08G77/12C08G77/20C08G77/70C08G77/16C09J183/04A61F13/0253C08K5/56C08L83/00C09J183/06C09J11/02C09J11/04C09J11/06C09J7/20C09J7/38A61K9/7069A61K47/34C09J7/381C09J2483/00
Inventor 小林亮广黑田泰嘉青木俊司
Owner SHIN ETSU CHEM IND CO LTD
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