Absolute molecular weight polymers and methods for their use

Details Absolute molecular weight polymers and methods for their use Absolute molecular weight polymers and methods for their use

C - Chemistry, Metallurgy

08

G

C08G 73/00 (2006.01) A01N 33/12 (2006.01) A61K 31/785 (2006.01) A61L 2/18 (2006.01) A61L 12/14 (2006.01) C07C 29/17 (2006.01) C07C 29/62 (2006.01) C08G 73/02 (2006.01)

Patent

CA 2255755

A process for preparing defined molecular weight polymers, particularly polyquaternary ammonium compounds, is disclosed. As the molecular weights of these compounds can be absolutely defined, rather than defined merely in terms of "number average molecular weight", these compounds are particularly useful as identification standard for other polymers which are made using conventional polymerization processes. The polyquaternary ammonium compounds described are further suitable for use as antimicrobial agents, particularly in ophthalmic compositions.

Cette invention se rapporte à un procédé pour préparer des polymères de poids moléculaires définis, en particulier des composés d'ammonium polyquaternaire. Etant donné que les poids moléculaires de ces composés peuvent être définis dans l'absolu, plutôt que simplement en termes de poids moléculaire en nombre, ces composés sont particulièrement utiles comme standards d'identification pour d'autres polymères, qui sont fabriqués au moyen de processus de polymérisation traditionnels. Les composés d'ammonium polyquaternaire décrits sont en outre appropriés pour servir d'agents antimicrobiens, en particulier dans des compositions ophtalmiques.

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