Process for preparing crosslinked polymers

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 3/24 (2006.01) C08L 23/00 (2006.01) C08L 23/26 (2006.01)

Patent

CA 2597772

The present invention relates to a process for preparing a crosslinked polymer composition, comprising the steps: (a) preparing a crosslinkable blend of a crosslinking agent and an unsaturated polyolefin having a total amount of carbon-carbon double bonds/1000 carbon atoms of more than 0.37, wherein the blending step is carried out prior to and/or during extrusion of the unsaturated polyolefin, and the crosslinking agent is in a liquid state when it comes into contact with the unsaturated polyolefin, (b) extruding the blend in an extruder, (c) applying the extruded blend onto a substrate, and (d) treating the extruded blend under crosslinking conditions.

La présente invention concerne un procédé servant à préparer une composition de polymère réticulé, comprenant les étapes consistant à : (a) préparer un mélange réticulable constitué d'un agent de réticulation et d'une polyoléfine insaturée ayant une quantité totale de doubles liaisons carbone-carbone supérieure à 0,37 pour 1000 atomes de carbone, ladite étape de mélange étant effectuée avant et/ou pendant l'extrusion de la polyoléfine insaturée et l'agent de réticulation étant à l'état liquide lorsqu'il entre en contact avec la polyoléfine insaturée, (b) extruder le mélange dans une extrudeuse, (c) appliquer le mélange extrudé sur un substrat et (d) traiter le mélange extrudé dans des conditions de réticulation.

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