Modification of (co)polymers with unsaturated peroxyacids

C - Chemistry – Metallurgy – 08 – F

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C08F 8/06 (2006.01) C08C 19/00 (2006.01) C08C 19/08 (2006.01) C08F 8/00 (2006.01) C08F 8/50 (2006.01) C08K 7/14 (2006.01)

Patent

CA 2175207

A process for the modification of a (co)polymer selected from C3-C10 .alpha.- olefin polymers, ethylene polymers, diene polymers and copolymers of C3-C10 .alpha.-olefins with ethylene and/or diene, to make the (co)polymer more suitable for reinforcement with polymer reinforcing material is disclosed. In the process, the (co)polymer is contacted with an acid-group-containing usaturated peroxide to modify the (co)polymer. The modification process results in improved properties such as adhesion to PUR lacquer and improved mechanical properties. Also disclosed are a modification process carried out in the presence of an unsaturated coagent as well as the use of acid-group- containing unsaturated peroxides for the modification of (co)polymers. Finally, the process may be carried out in a single processing step or in two or more successive processing steps.

L'invention concerne un procédé destiné à modifier un (co)polymère choisi parmi des polymères d'.alpha.-oléfine C¿3-10?, des polymères d'éthylène, des polymères de diène et des copolymères d'.alpha.-oléfines C¿3-10?, avec éthylène et/ou diène, à rendre ce (co)polymère plus apte à renforcer un matériau de renforcement polymère. Dans ce procédé, on met en contact le (co)polymère avec un peroxyde insaturé contenant un groupe acide afin de modifier ce (co)polymère. Le procédé de modification améliore les caractéristiques telles que l'adhésion à un vernis polyuréthanne, ainsi que les caractéristiques mécaniques. L'invention se rapporte également à un procédé de modification effectué en présence d'un co-agent insaturé, ainsi qu'à l'utilisation de peroxydes insaturés contenant un groupe acide dans la modification des (co)polymères. Finalement, on peut réaliser ce procédé en une seule étape de traitement, ou en deux étapes successives de traitement ou davantage.

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