Patent ID: 8299162
Filing Date: 2012-10-30
Classification: A61K,A61Q

Abstract:
1. A cold process for making an emulsion or hydrogel comprising the step of combining a cold process formulation aid having a wax component with an aqueous medium, at a temperature not exceeding 30° C., wherein the cold process formulation aid is in the form of a powder, a paste, or a semi-solid and consists essentially of: (i) a polymer having an aliphatic backbone and a plurality of pendant groups thereon that are pendant ionic or ionizable groups, and (ii) a wax component selected from the group consisting of natural waxes and synthetic waxes, wherein if the wax is not micronized, the ratio, by weight of the non-micronized wax to the polymer having an aliphatic backbone is from about 60:40 to 80:20, and if the wax is a micronized wax, it has a particle size not exceeding about 50μ and the ratio, by weight, of micronized wax to the polymer having an aliphatic backbone and a plurality of pendant groups thereon that are pendant ionic or ionizable groups is from about 85:15 to 98:2.