Controlled release compositions
AssigneeEuroceltique, S.A.
InventorStewart T. Leslie
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Abstract
Molecular coordination complexes are formed between a cellulose polymer and a non-polar solid aliphatic alcohol containing 8 to 18 carbon atoms optionally substituted with an aliphatic group containing 8 to 18 carbon atoms by solvating the polymer with a volatile polar solvent and reacting the solvated cellulose polymer directly with the aliphatic alcohol, preferably as a melt. The resulting composition may be dried. This constitutes the complex. The composition has utility as a matrix in controlled release formulations since it has a uniform porosity which may be varied.
Claims11
A molecular coordination complex of a cellulose polymer and a solid aliphatic alcohol selected from the group consisting of unsubstituted solid aliphatic alcohols of 8-18 carbon atoms and solid aliphatic alcohols of 8-18 carbon atoms substituted by an aliphatic group of 8-18 carbon atoms.
Dependencies are inferred from the claim text.