Soluble adhesives

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 163/00 (2006.01) C08G 18/36 (2006.01) C08G 18/38 (2006.01) C08G 18/80 (2006.01) C08G 59/18 (2006.01) C08G 59/40 (2006.01) C08K 5/47 (2006.01) C09J 5/06 (2006.01) C09J 11/06 (2006.01) C09J 11/08 (2006.01) C09J 175/04 (2006.01) C08L 63/00 (2006.01) C08L 81/04 (2006.01)

Patent

CA 2362502

Soluble adhesives are formulated on the basis of binding agents which have at least one structural component that contains di- or polysulfide bonds. These adhesives can be hardened according to conventional methods as either two- component adhesives or one-component heat-hardening adhesives. Adhesive compounds of this type can be re-dissolved with non-dispersed mercapto compound-based or reducing agent-based splitting agents which are inert at room temperature, optionally with the addition of catalysts. This enables structural parts which have been glued together to be separated in the glue line by chemical means.

L'invention concerne des formulations de compositions adhésives solubles à base de liants qui renferment au moins un composant structurel contenant des composés bisulfurés ou polysulfurés. Ces adhésifs peuvent être durcis par la chaleur selon les procédés classiques, soit sous forme d'adhésifs à deux composants, soit sous forme d'adhésifs thermodurcissables à un seul composant. Ces composés adhésifs peuvent être resolubilisés par des agents de séparation non dispersés, inertes à la température ambiante, à base de composés mercapto ou d'agents réducteurs, éventuellement avec adjonction de catalyseurs. Ils permettent de séparer par voie chimique, au niveau de la ligne de collage, des éléments structurels collés.

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