Granulated active ingredients

Details Granulated active ingredients Granulated active ingredients

2007-01-02

2007-01-02

Levy, Neil S. (Department: 1615)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

C424S405000, C424S406000, C424S409000, C424S417000, C514S120000

Reexamination Certificate

active

09801871

ABSTRACT:
Granulated forms of various active ingredients can be prepared with a small amount of a dissolvable polymer and a solvent for that polymer. The solvent dissolves at least a portion of the polymer. This dissolved polymer acts as a particle lubricant for the extrusion process and, when the solvent is removed, as a binder for the final extrudate. A poly(alkylene oxide) is preferred and, in the presence of a small amount of solvent, dissolves sufficiently to provide lubricity to the extrusion mixture that the solids can be extruded with little friction and associated local temperature rise thru the extrusion die.

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