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Dry electrode adhesive

A technology of pressure-sensitive adhesives and compositions, applied in the direction of conductive adhesives, adhesive types, ester copolymer adhesives, etc., which can solve the problems of expensive and complicated electrode production

Pending Publication Date: 2021-10-26
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this electrophoretic activation step makes electrode production expensive and complex

Method used

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  • Dry electrode adhesive
  • Dry electrode adhesive
  • Dry electrode adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1-5

[0122] Impedance of ionic liquids in pressure-sensitive adhesives with different functionalities

Embodiment 1

[0124] 2 g of Loctite Duro-TAK 222A (solids content: 41%) and 0.091 g of 1-ethyl-3-methylimidazolium benzoate were mixed in a conditioning mixer at 2000 rpm for 3 minutes.

Embodiment 2-15 and comparative example 6

[0134] Comparison of Ionic Liquids in Pressure Sensitive Adhesives with High OH Functionality

[0135] 5 g of Loctite Duro-TAK 222A (solids content: 41%) and 0.228 g of each ionic liquid were mixed in a conditioning mixer at 2000 rpm for 3 minutes.

[0136] The mixture (Table 3) was coated onto a release liner and dried at room temperature for 30 minutes, resulting in a PSA film with a thickness of 20-30 μm. Subsequently, the coating film was cured at 120° C. for 3 minutes and covered with another release liner.

[0137] Table 3: DURO-TAK 222A with various ionic liquids

[0138]

[0139] Impedance measurement:

[0140] For impedance measurements ( figure 2 ), the dry PSA film was transferred onto Al foil. Two pieces of PSA-Al film were cut and glued together to form a 2 Al-PSA-Al capacitors with area and 40-60μm PSA thickness. with a potentiostat from Metrohm Autolab at 9 × 10 5 Impedance is measured over a frequency range from 0.1 Hz to 0.1 Hz.

[0141] figure 2...

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Abstract

The present invention relates to an electrode adhesive, which is an ionically conductive (meth)acrylate based pressure sensitive adhesive allowing prolongated biosignal monitoring times without skin irritation and loss of signal quality.

Description

technical field [0001] The present invention relates to electrode adhesives, which are ionically conductive pressure sensitive adhesives that allow long-term biosignal monitoring without skin irritation and loss of signal quality. Background technique [0002] Various types of electrodes are used to measure biosignals, such as electrocardiogram (ECG), electroencephalogram (EEG), and electromyography (EMG). [0003] For example, currently used ECG electrodes are connected to the skin via a gel, which acts as an electrolyte and transmits body signals to the electrodes. However, it dries out over time and cannot be used for long-term measurements. In most cases, it is not recommended to use it for more than 24 hours. Additionally, they do not have a long storage time, in most cases up to a month after opening, and moreover, they require special packaging to prevent them from drying out. [0004] In particular, currently used gel electrodes have a high salt concentration, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/00C09J9/02A61B5/268A61B5/266
CPCA61B2562/125C08K5/3445C09J133/066A61B5/259A61B5/276A61B5/291C09J7/385C09J9/02C09J133/12G01N33/4833
Inventor C·内格勒I·范德默伦S·吉利森T·罗舍克F·格特尔A·贝斯莱尔A·施奈德
Owner HENKEL KGAA