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Room temperature curable siloxane-based gels

A silicone fluid and gel technology, applied in adhesives, other chemical processes, chemical instruments and methods, etc., can solve the problem of not peeling off skin cells significantly

Inactive Publication Date: 2015-09-23
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So-called "skin-gentle adhesives" have been developed that provide sufficient skin adhesion to adhere the adhesive article to the skin, but do not significantly strip skin cells upon removal

Method used

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  • Room temperature curable siloxane-based gels
  • Room temperature curable siloxane-based gels
  • Room temperature curable siloxane-based gels

Examples

Experimental program
Comparison scheme
Effect test

example

[0084] These examples are for illustrative purposes only and are not intended to limit the scope of the appended claims. All parts, percentages, ratios, etc. in the examples, as well as in the remainder of the specification, are by weight unless otherwise indicated. Solvents and other reagents used were obtained from Sigma-Aldrich Chemical Company; Milwaukee, Wisconsin unless otherwise noted. The following abbreviations are used: cm = centimeter; mm = millimeter; g = gram; kg = kilogram; lb = pound; sec = second; min = minute. The terms "% by weight", "% by weight" and "wt%" are used interchangeably.

[0085] Acronym

[0086]

[0087] testing method

[0088] viscosity

[0089] Viscosity was measured using a TA.XT Plus Texture Analyzer (Stable Micro Systems Ltd., Surrey, UK) equipped with a 6 mm diameter polypropylene cylinder probe. Adhesive samples were cut to 1.9 cm wide and 10.2 cm long and laminated to a brass rod with a 10 mm diameter hole passing through it...

example 1

[0095] Example 1 (E-1)

[0096] To 100 parts of ST-PDMS was added 45 parts of MQ resin and 1 part of APTS. It was mixed for about four minutes with a SPEEDMIXER (FlackTek Inc., Landrum, SC) and coated on polyurethane with a knife coater with a gap of 152 microns. film. After 24 hours at room temperature, the coated film became a self-tacky silicone gel tape.

example 2

[0097] Example 2 (E-2)

[0098] To 100 parts of ST-PDMS was added 45 parts of MQ resin and 1 part of APDM. It was mixed with a speed mixer (SPEEDMIXER) for about four minutes and coated on a polyurethane film with a knife coater with a gap of 152 microns. After 24 hours at room temperature, the coated film became a self-tacky silicone gel tape.

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PUM

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Abstract

Siloxane-based gel compositions are prepared from room temperature condensation curable mixtures that include 0.5 - 45 % by weight silicone resin with at least two hydroxyl groups, 99.5 - 55 % by weight of at least one silanol-terminated siloxane fluid, and a co-curable compound with an amino group. The siloxane-based gel compositions can be used as adhesives or sealants in medical articles.

Description

technical field [0001] The present disclosure relates to silicone-based gels that can be used to form adhesive articles, such as strips, or sealant articles, which can be used in medical applications. Background technique [0002] A wide variety of adhesive articles are used in medical applications. These adhesive articles include gels for attaching electrodes and other sensing devices to the skin of patients, a wide variety of tapes for attaching medical devices to patients, and adhesives for covering and protecting wounds. Compound dressing. [0003] Many adhesive articles use pressure sensitive adhesives. Pressure sensitive adhesives are well known to those of ordinary skill in the art and have certain properties at room temperature including: (1) dry tack and persistent tack; (2) adhere with no more than finger pressure (3) have sufficient ability to remain on the adherend; and (4) have sufficient cohesive strength so that it can be removed cleanly from the adherend. ...

Claims

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Application Information

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IPC IPC(8): C08L83/04C09J183/04C09J7/40
CPCC08L2205/02C08L83/04C09J183/04C08G77/16C09J7/40C08K5/544C09K3/1018C08L83/00C08K3/36A61L24/046C08G77/44C08G2220/00C08J3/28C09J183/10
Inventor 刘军钪石渡裕信西格弗里德·K·韦尔克柿沼好映
Owner 3M INNOVATIVE PROPERTIES CO
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