Thermally immobilized polysaccharide derivatives

Details Thermally immobilized polysaccharide derivatives Thermally immobilized polysaccharide derivatives

C - Chemistry, Metallurgy

08

B

C08B 15/00 (2006.01) C07B 57/00 (2006.01) C08B 31/00 (2006.01) C08B 33/00 (2006.01) G01N 30/48 (2000.01)

Patent

CA 2258508

The invention essentially relates to thermally crosslinked polysaccharide derivatives which contained no polymerizable functional groups prior to crosslinking and which are used in particular as support materials for the chromatographic separation of enantiomers. The present invention relates to thermally crosslinked polysaccharide derivatives in which the OH groups, as OR groups, have been esterified or converted into a carbamate (urethane), or mixtures of these, with the proviso that the OR groups contained no polymerizable double bonds prior to crosslinking. The thermally crosslinked polysaccharides according to the invention in conditioned form can also be used as pure polymers for the chromatographic separation of enantiomers.

Cette invention concerne principalement des dérivés de polysaccharide réticulés thermiquement qui ne contenaient pas de groupes fonctionnels polymérisables avant la réticulation et qui sont utilisés plus particulièrement comme matières de support pour la séparation chromatographique d'énantiomères. On décrit des dérivés de polysaccharide réticulés thermiquement dans lesquels les groupes OH, comme les groupes OR, ont été estérifiés ou convertis en un carbamate (uréthane) ou en mélanges de ces derniers, à condition que les groupes OR ne contiennent pas de doubles liaisons polymérisables avant la réticulation. Les polysaccharides réticulés thermiquement de cette invention, sous une forme conditionnée, peuvent également être utilisés en tant que polymères purs pour la séparation chromatographique d'énantiomères.

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