Degradable poly(ethylene glycol) hydrogels with controlled...

C - Chemistry – Metallurgy – 08 – G

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08G 65/32 (2006.01) A61K 47/10 (2006.01) A61K 47/34 (2006.01) C08G 65/329 (2006.01)

Patent

CA 2303365

This invention relates to hydrolytically degradable gels of crosslinked poly(ethylene) glycol (PEG) structures. Addition of water causes these crosslinked structures to swell and become hydrogels. The hydrogels can be prepared by reacting two different PEG derivatives containing functional moieties at the chain ends that react with each other to form new covalent linkages between polymer chains. The PEG derivatives are chosen to provide covalent linkages within the crosslinked structure that are hydrolytically degradable. Hydrolytic degradation can provide for dissolution of the gel components and for controlled release of trapped molecules, including drugs. Reagents other than PEG can be avoided. The hydrolysis rates can be controlled by varying atoms adjacent to the hydrolytically degradable functional groups to provide substantially precise control for drug delivery in vivo.

Cette invention porte sur des gels hydrolytiquement dégradables de structures de poly(éthylène) glycol réticulées. L'ajout d'eau provoque le gonflement de ces structures réticulées qui se transforment en hydrogels. On peut préparer les hydrogels en faisant réagir deux dérivés différents de PEG contenant des fractions fonctionnelles aux extrémités de la chaîne qui réagissent entre elles de façon à former de nouvelles liaisons entre des chaînes polymères. On sélectionne les dérivés de PEG pour former dans la structure réticulée des liaisons covalentes hydrolytiquement dégradables. La dégradation hydrolytique peut produire la dissolution des composants du gel et la libération régulée des molécules piégées, y compris les médicaments. Il est possible d'éviter l'utilisation des réactifs autres que le PEG. Il est possible de réguler la vitesse de l'hydrolyse en faisant varier les atomes adjacents aux groupes fonctionnels hydrolytiquement dégradables de façon à effectuer une régulation précise de l'administration des médicaments in vivo.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Degradable poly(ethylene glycol) hydrogels with controlled... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Degradable poly(ethylene glycol) hydrogels with controlled..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Degradable poly(ethylene glycol) hydrogels with controlled... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1443303

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.