Silicone contact adhesive with reduced cold flow

Details Silicone contact adhesive with reduced cold flow Silicone contact adhesive with reduced cold flow

C - Chemistry, Metallurgy

09

J

117/30

C09J 7/02 (2006.01) A61L 15/58 (2006.01) C09J 11/06 (2006.01) C09J 183/04 (2006.01)

Patent

CA 2322273

In a process for the production of polysiloxane pressure-sensitive adhesive layers with reduced cold flow by means of coating and drying a one-component polysiloxane pressure-sensitive adhesive solution onto a suitable flat-shaped carrier, a complex of a metal ion of the group consisting of calcium, magnesium, zinc, aluminum, titanium, zirconium or hafnium with a low-molecular organic complex former is added to the organic adhesive solution to be coated, whereby the metal ion is only released from the bond to the complex former under the conditions of heating and/or drying of the adhesive solution.

L'invention concerne un procédé de réalisation de couches d'adhésif polysiloxane de contact présentant un fluage à froid réduit, qui consiste à appliquer une couche d'une solution d'adhésif polysiloxane à un composant sur un support plat approprié, et à faire sécher cette couche. Selon ledit procédé, on ajoute à la solution d'adhésif organique à appliquer en couche un complexe constitué d'un ion d'un métal du groupe comprenant le calcium, la magnésium, le zinc, l'aluminium, le titane, le zirconium ou l'hafnium et d'un agent complexant organique d'un bas poids moléculaire, l'ion métal n'étant libéré de la liaison à l'agent complexant que dans les conditions de chauffage et/ou de séchage de la solution d'adhésif.

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