A medical pressure-sensitive silicone gel, its preparation method and application, and a gel product

A silicone gel, pressure-sensitive technology, used in pressure-sensitive films/sheets, adhesives, film/sheet-like adhesives, etc. The skin is prone to sweating and other problems, achieving the effect of not easy human allergic reaction, high viscosity, and simple method

Active Publication Date: 2022-05-24
广州旭太材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Using the current medical adhesive patch coated with silicone gel, the patch is easy to fall off from the skin due to insufficient stickiness when attached to the skin;
[0004] Human skin is prone to sweating, and the current silicone gel cannot be bonded to wet skin, which makes the silicone gel sticker easy to fall off from the skin;
[0005] The current silicone gel has insufficient cohesive strength, and the glue prepared by it is easy to remain on the skin when it is torn off from the skin

Method used

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  • A medical pressure-sensitive silicone gel, its preparation method and application, and a gel product
  • A medical pressure-sensitive silicone gel, its preparation method and application, and a gel product
  • A medical pressure-sensitive silicone gel, its preparation method and application, and a gel product

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preparation example Construction

[0063] In addition, the present application also provides a method for preparing the above-mentioned medical pressure-sensitive silicone gel, which may include the following steps: mixing raw materials.

[0064] In an optional embodiment, when the raw material includes a catalyst, the mixing can be performed according to the following steps: mixing part of vinyl silicone oil (such as methylvinylsiloxane-dimethylsiloxane copolymer) and the catalyst to obtain A glue. Mix the remaining vinyl silicone oil (such as methyl vinyl siloxane-dimethylsiloxane copolymer), hydrogen-containing silicone oil (such as polymethyl hydrogen siloxane) and MQ silicone resin to obtain B glue. Then mix the A glue and the B glue.

[0065] Mixing the raw materials of the present application in this order helps to avoid the silicone gel being non-sticky due to the complete curing of the raw materials, and also helps to avoid the formation of an adhesive layer with too strong a structure, so that it can...

Embodiment 1

[0079] The present embodiment provides a medical pressure-sensitive silicone gel, which is prepared by the following method:

[0080] Mix glue A and glue B in a mass ratio of 1:1.

[0081] Among them, the A glue contains 99% of methylvinylsiloxane-dimethylsiloxane copolymer and 1% of platinum complex in terms of weight percentage. The concentration of the platinum complex was 3000 ppm. A glue is obtained by mixing the above two components in a mixer according to the proportion.

[0082] In parts by weight, glue B contains 89% of methylvinylsiloxane-dimethylsiloxane copolymer, 10% of polymethyl hydrogen siloxane and 1% of methyl MQ silicone resin. Glue B is obtained by mixing the above three components in a mixer according to the proportions.

[0083] That is, the final silicone gel contains 94% by weight of methylvinylsiloxane-dimethylsiloxane copolymer, 0.5% by weight of platinum complex, 5% by weight of polymethyl hydrogen siloxane and 0.5% by weight of polymethyl hydroge...

Embodiment 2

[0085] The present embodiment also provides a medical pressure-sensitive silicone gel, which is prepared by the following method:

[0086] Mix glue A and glue B in a mass ratio of 1:1.

[0087] Among them, the A glue contains 99% of methylvinylsiloxane-dimethylsiloxane copolymer and 1% of platinum complex in terms of weight percentage. A glue is obtained by mixing the above two components in a mixer according to the proportion.

[0088] In parts by weight, glue B contains 88% of methylvinylsiloxane-dimethylsiloxane copolymer, 10% of polymethyl hydrogen siloxane and 2% of methyl MQ silicone resin. Glue B is obtained by mixing the above three components in a mixer according to the proportions.

[0089] That is, the final silicone gel contains 93.5wt% methylvinylsiloxane-dimethylsiloxane copolymer, 0.5wt% platinum complex, 5wt% polymethyl hydrogen siloxane and 1 wt% MQ silicone resin.

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Abstract

The invention discloses a medical pressure-sensitive silicone gel, a preparation method and application thereof, and a gel product, belonging to the technical field of silicone gel. The raw materials of the silicone gel include vinyl silicone oil, hydrogen-containing silicone oil and MQ silicone resin. By adding MQ silicone resin to the raw material, it can fill the internal structure of the gel, improve the stability of the silicone gel structure and improve the cohesive strength of the silicone gel, and at the same time make the silicone gel have a higher viscosity , not easy to fall off, the whole silicone gel has the adhesive performance of some silicone pressure-sensitive adhesives, soft and comfortable, no pain to tear the skin. The preparation method includes mixing various raw materials, the method is simple, the process is easy to control, and industrial production is possible. Using the above-mentioned silica gel to prepare gel products can make the gel products have strong viscosity and strength at the same time, less irritation to human skin, and less likely to cause human allergic reactions.

Description

technical field [0001] The invention relates to the technical field of silica gel, in particular to a medical pressure-sensitive silica gel, a preparation method and application thereof, and a gel product. Background technique [0002] The current silicone gel and the prepared adhesive sticker have at least the following defects: [0003] Using the current silicone gel-coated medical stickers, the stickers are easily detached from the skin due to insufficient stickiness when attached to the skin; [0004] Human skin is prone to sweating, and the current silicone gel cannot bond with wet skin, which causes the silicone gel sticker to easily fall off the skin; [0005] The current silicone gel has insufficient cohesive strength, and when the adhesive prepared by the silicone gel is affixed and torn off from the skin, the adhesive is likely to remain on the skin. [0006] In view of this, the present invention is proposed. SUMMARY OF THE INVENTION [0007] One of the objec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/38C09J183/07C09J11/08C09J7/21C09J7/25
CPCC09J7/38C09J183/04C09J11/08C09J7/21C09J7/25C08L2205/03C08L2205/025C09J2400/263C09J2475/006C08L83/04
Inventor 黎嘉铭蔡基峰
Owner 广州旭太材料科技有限公司
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