Method of preparing propionic acid-terminated polymers

Details Method of preparing propionic acid-terminated polymers Method of preparing propionic acid-terminated polymers

C - Chemistry, Metallurgy

08

F

C08F 8/00 (2006.01)

Patent

CA 2553528

The invention provides methods for preparing polymers bearing a terminal propionic acid. The method involves first reacting a water soluble and non- peptidic polymer comprising at least one hydroxyl group with a tertiary alkyl acrylate in the presence of a catalyst to form a propionic acid ester of the polymer, wherein the polymer has a weight average molecular weight of at least about 10,000 Da; and then treating the propionic acid ester of the polymer with a strong acid to form a propionic acid of the polymer.

La présente invention concerne des procédés permettant de préparer des polymères portant un acide propionique terminal. Le procédé décrit dans cette invention consiste, dans un premier temps, à faire réagir un polymère non peptidique et hydrosoluble comprenant au moins un groupe hydroxyl avec un acrylate d'alkyle tertiaire en présence d'un catalyseur de manière à former un ester d'acide propionique du polymère. Le polymère présente un poids moléculaire moyen d'environ au moins 10 000 Da; puis à traiter l'ester d'acide propionique du polymère avec un acide fort de manière à former un acide propionique du polymère.

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