Concentrates suitable for the preparation of functionalized...

C - Chemistry – Metallurgy – 08 – F

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C08F 255/00 (2006.01) C08F 8/00 (2006.01) C08F 8/46 (2006.01) C08F 255/02 (2006.01) C08L 23/26 (2006.01)

Patent

CA 2097110

Disclosed are functionalized polyolefins prepared by mixing a polyolefin with a concentrate and extruding the resulting blend, wherein said concentrate is in the form of olefin polymer particles coated with a mixture of additives comprising: A) from 0.05 to 30% by weight, based on the total weight of the concentrate, of one or more nonpolymerizable polar vinyl monomers; B) from 0.05 to 30% in moles, with respect to (A), of a free radical generating initiator which is not active at temperatures lower than or equal to 70°C, and optionally, C) from 0.1 to 5% by weight, based on the total weight of the concentrate, of a coating substance.

Divulgation de polyoléfines à chaînes substituées par des groupements fonctionnels, préparées en mélangeant une polyoléfine avec un concentré et en extrudant le mélange obtenu, dans lequel le concentré est sous forme de particules de polymères oléfiniques recouvertes d'un mélange d'additifs comprenant : A) de 0,05 à 30 % en poids, par rapport au poids total du concentré, d'un ou de plus d'un monomère vinylique polaire non polymérisable; B) de 0,05 à 30 % en mole, par rapport à A), d'un initiateur générateur de radicaux libres, qui n'est pas actif à des températures inférieures ou égales à 70 .degré.C, et facultativement, C), de 0,1 à 5 % en poids, par rapport au poids total du concentré, d'une matière de revêtement.

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