Process for preparing microspheres of crosslinked poly...

C - Chemistry – Metallurgy – 08 – G

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C08G 69/50 (2006.01) C08F 8/28 (2006.01) C08F 20/56 (2006.01) C08J 3/24 (2006.01)

Patent

CA 1334605

Procédé de préparation de poly .beta.-alanine réticulée sous forme de microsphères. Ce procédé comprend les étapes consistant: a) à polymériser de l'acrylamide dans le mélange solvant tertio-butanol/toluène, en présence d'un initiateur de polymérisation et du copolymère octadécène-anhydride maléïque comme agent de suspension, b) à soumettre la suspension de poly .beta.-alanine obtenue à une réticulation à l'aide d'un dialdéhyde comme agent réticulant, et c) à isoler les microsphères de poly .beta.-alanine réticulée. Les microsphères obtenues présentent une faible dispersité de taille.

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