HYDROPHILIC POLYURETHANE POLYMERS DERIVED FROM A MDI-BASED ISOCYANATE-TERMINATED PREPOLYMER

The present invention relates an MDI-based isocyanate-terminated prepolymer suitable for preparing a hydrophilic polyurethane polymer. The MDI-based composition comprises a prepolymer obtained by reacting isocyanate mixture comprising 2,4'-methylene diphenylisocyanate (MDI) and 4,4'-methyl...

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Bibliographic Details
Main Authors LOPEZ, NETZA, B, PELLACANI, LUIGI, PARKS, FRANKLIN, E, THIEDE, VERENA
Format Patent
LanguageEnglish
French
German
Published 09.11.2005
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:The present invention relates an MDI-based isocyanate-terminated prepolymer suitable for preparing a hydrophilic polyurethane polymer. The MDI-based composition comprises a prepolymer obtained by reacting isocyanate mixture comprising 2,4'-methylene diphenylisocyanate (MDI) and 4,4'-methylene diphenylisocyanate in a molar ratio of from 25:75 to 80:20 with a polyether polyol having an oxyethylene content of at least 30 percent by weight.
Bibliography:Application Number: EP20040709043