HYDROPHILIC POLYURETHANE COMPOSITIONS

A water-swellable linear polymer is made by reacting together a polyethylene oxide of number average molecular weight less than 4000, an aliphatic diol and a difunctional isocyanate. Controlled release composition comprises the polymer together with an active agent. The polymer is able to take up ph...

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Bibliographic Details
Main Authors ZURUTUZA, AMAIA, TUOMINEN, JUKKA, LIVINGSTON, MARK, HALLIDAY, JANET, A
Format Patent
LanguageEnglish
French
German
Published 18.03.2009
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
HUMAN NECESSITIES
HYGIENE
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:A water-swellable linear polymer is made by reacting together a polyethylene oxide of number average molecular weight less than 4000, an aliphatic diol and a difunctional isocyanate. Controlled release composition comprises the polymer together with an active agent. The polymer is able to take up pharmaceutically active agents of molecular weight 200 to 20,000.
Bibliography:Application Number: EP20070733393