Process for preparing anhydride-grafted polymers with...

Details Process for preparing anhydride-grafted polymers with... Process for preparing anhydride-grafted polymers with...

C - Chemistry, Metallurgy

08

F

C08F 8/00 (2006.01) C08F 255/00 (2006.01) C08F 255/02 (2006.01) C08F 255/06 (2006.01) C08L 51/06 (2006.01)

Patent

CA 2400357

There is provided a process for improving the colour of anhydride-grafted polymers. The process includes the steps of admixing in an extruder a polyolefin, a free radical initiator, and an anhydride-providing monomer at a temperature above the melting point of the polyolefin, adding an effective amount of an oxo-boron compound to the admixture; and extruding the resultant anhydride-grafted polymer into a shaped article.

L'invention concerne un procédé pour optimiser la couleur de polymères greffés avec de l'anhydride. Ce procédé consiste à mélanger dans une extrudeuse une polyoléfine, un amorceur de radicaux libres et un monomère fournissant l'anhydride à une température supérieure au point de fusion de la polyoléfine, puis à ajouter au mélange une quantité efficace d'un composé oxo-bore et à extruder le polymère résultant, greffé avec de l'anhydride, de façon à obtenir un article moulé.

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