Method of manufacturing wax matrices
First Claim
1. A method of producing a wax matrix for controlling release of a pharmaceutically active material contained therein, said method comprising the steps of feeding a wax and the pharmaceutically active ingredient into a multi-screw extruder and thoroughly mixing the wax with the pharmaceutically active material using the multi-screw extruder, which is maintained at a temperature below the melting point of the wax during the mixing, to form a wax matrix, wherein the wax matrix thus produced provides a controlled release of the active ingredient.
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Abstract
A method of producing a wax matrix for controlled release of a pharmaceutically active ingredient is provided. The method includes the steps of feeding a wax and a pharmaceutically active ingredient into a multi-screw extruder and thoroughly mixing the wax with the pharmaceutically active ingredient using the multi-screw extruder to form a wax matrix. The wax matrix thus produced provides a controlled release of the active ingredient.
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15 Claims
- 1. A method of producing a wax matrix for controlling release of a pharmaceutically active material contained therein, said method comprising the steps of feeding a wax and the pharmaceutically active ingredient into a multi-screw extruder and thoroughly mixing the wax with the pharmaceutically active material using the multi-screw extruder, which is maintained at a temperature below the melting point of the wax during the mixing, to form a wax matrix, wherein the wax matrix thus produced provides a controlled release of the active ingredient.
Specification