Crosslinked polymers, polymer fine particles, and processes...

C - Chemistry – Metallurgy – 08 – F

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C08F 290/06 (2006.01) A61K 47/34 (2006.01) B22F 9/24 (2006.01) C08F 265/10 (2006.01) C08L 51/00 (2006.01)

Patent

CA 2483309

A crosslinked polymer or fine polymer particle which can be obtained by the copolymerization of a macromonomer having at least a polyethylene glycol segment, a comonomer having a tertiary amine group in a side chain, and a crosslinking agent. The crosslinked polymer can be provided as nano- or micro- spheres. It can be provided also as a composite comprising the nano- or micro- spheres and ultrafine particles of a metal or semiconductor fixed or encapsulated therein as cores.

L'invention concerne un polymère réticulé ou une particule fine de polymère obtenu par copolymérisation d'un macromère renfermant au moins un segment de polyéthylène glycol, d'un comonomère renfermant groupe amine tertiaire dans une chaîne latérale et d'un agent de réticulation. Ledit polymère réticulé peut être produit sous forme de nanosphères ou de microsphères. Il peut également être produit sous forme d'un composite comprenant lesdites nanosphères ou microsphères et des particules ultrafines d'un métal ou d'un semi-conducteur fixé ou encapsulé dans le composite sous forme de noyau.

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