Method for making polyolefin nanocomposites

Details Method for making polyolefin nanocomposites Method for making polyolefin nanocomposites

C - Chemistry, Metallurgy

08

J

C08J 3/20 (2006.01) C08K 3/34 (2006.01) C08K 5/103 (2006.01) C08K 5/20 (2006.01) C08L 23/02 (2006.01)

Patent

CA 2456954

A polyolefin nanocomposite is prepared by melt blending (a) a polyolefin and (b) a smectite clay in the presence of at least one intercalating agent that is a solid at room temperature and is selected from the group consisting of (a) hydroxy-substituted carboxylic acid esters, (b) amides, (c) hydroxy- substituted amides, and (d) oxidized polyolefins, wherein the ratio of the intercalating agent to the clay is at least 1:3, based on the ash content of the clay.

Pour préparer un nanocomposite polyoléfinique, on mélange à l'état fondu (a) une polyoléfine et (b) une argile smectique, en présence d'au moins un agent d'intercalation qui est solide à température ambiante et sélectionné dans le groupe formé par (a) les esters d'acide carboxylique à substitution hydroxy, (b) les amides, (c) les amides à substitution hydroxy, et (d) les polyoléfines oxydées. Le rapport entre l'agent d'intercalation et l'argile est au moins égal à 1:3, sur la base de la teneur en cendres de l'argile.

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