NOVEL ESTERIFIED CELLULOSE ETHERS OF LOW VISCOSITY

Esterified cellulose ethers which comprise (i) aliphatic monovalent acyl groups or (ii) groups of the formula -C(O)-R-COOA, wherein R is a divalent aliphatic or aromatic hydrocarbon group and A is hydrogen or a cation, or (iii) a combination of aliphatic monovalent acyl groups and groups of the form...

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Hauptverfasser: SPREHE, Matthias, GRASMAN, Nicholas S, BRACKHAGEN, Meinolf, PETERMANN, Oliver, SCHMITT, Robert L, GUILLAUDEU, Steven J
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Sprache:eng ; fre ; ger
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creator SPREHE, Matthias
GRASMAN, Nicholas S
BRACKHAGEN, Meinolf
PETERMANN, Oliver
SCHMITT, Robert L
GUILLAUDEU, Steven J
description Esterified cellulose ethers which comprise (i) aliphatic monovalent acyl groups or (ii) groups of the formula -C(O)-R-COOA, wherein R is a divalent aliphatic or aromatic hydrocarbon group and A is hydrogen or a cation, or (iii) a combination of aliphatic monovalent acyl groups and groups of the formula -C(O)-R-COOA, which have a viscosity of up to 2.33 mPa·s, measured as a 2.0 wt % solution of the esterified cellulose ether in 0.43 wt % aqueous NaOH at 20° C., and which have a viscosity of up to 13 mPao·s, measured as a 10 wt % solution of the esterified cellulose ether in acetone at 20° C. are useful for preparing solid dispersions comprising drugs.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
THEIR PREPARATION OR CHEMICAL WORKING-UP
title NOVEL ESTERIFIED CELLULOSE ETHERS OF LOW VISCOSITY
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