Polycarbometallane

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 61/12 (2006.01) C07F 7/22 (2006.01) C07F 19/00 (2006.01) C08G 79/00 (2006.01) C08G 79/12 (2006.01)

Patent

CA 2329720

A polymer having a backbone repeat unit that includes at least two metal atoms bonded to each other and only one ethylenically unsaturated functional group wherein the backbone unit preferably has a structure of: -C(R3)=C(R3)- [C(R3)(R4)]n-[M(R1)(R2)]a-[C(R3)(R4)]p-, wherein n is 0 to 4; a is at least 2; p is 0 to 4; R1 and R2 are each independently selected from hydrogen, halogen, lower alkyl having 4 or fewer carbon atoms, alkenyl having 4 or fewer carbon atoms, or aromatic having one ring; R3 and R4 are each independently selected from hydrogen and lower alkyl having 1 to 4 carbon atoms; and M is a metal atom selected from at least one of Sn, Ge, Pb, Hg, Ni, Pd, Pt, Cr, Fe, Co, Cu and Zn. The polymer has at least 20 weight percent metal, preferably at least 50 weight percent metal, based on the weight of the polymer.

La présente invention concerne un polymère comportant, d'une part une unité répétitive constituant une ossature, et d'autre part au moins deux atomes de métal liés l'un à l'autre et un unique groupe éthyléniquement insaturé. L'unité ossature présente de préférence la structure suivante: -C(R?3¿)=C(R?3¿)-[C(R?3¿)(R?4¿)]¿n?-[M(R?1¿)(R?2¿)]¿a?-[C(R?3¿)(R?4¿)]¿p?-. Dans cette structure, n vaut de 0 à 4; a vaut au moins 2; p vaut de 0 à 4. R?1¿ et R?2¿ appartiennent indépendamment chacun au groupe des hydrogène, halogène, alkyle inférieur portant jusqu'à 4 atomes de carbone, alcényle portant jusqu'à 4 atomes de carbone ou un aromatique à un seul cycle. R?3¿ et R?4¿ appartiennent indépendamment chacun au groupe des hydrogène et alkyle inférieur en C¿1?-C¿4?. Enfin, M est un atome de métal appartenant au groupe des Sn, Ge, Pb, Hg, Ni, Dp, Pt, Cr, Fe, Co, Cu et Zn. Ce polymère comprend au moins 20 % et de préférence 50 % en poids de métal rapporté au poids du polymère.

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