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Polar solvent-in-oil emulsions and multiple emulsions

  • US 6,177,071 B1
  • Filed: 02/07/2000
  • Issued: 01/23/2001
  • Est. Priority Date: 11/08/1999
  • Status: Expired due to Term
First Claim
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1. A composition comprising a non-aqueous polar solvent-in-oil-in-water multiple emulsion of the type PS1/O/W which contains a non-aqueous polar solvent phase PS1 dispersed in a silicone oil as a first continuous phase of a primary emulsion PS1/O by an emulsifier, the primary emulsion PS1/O being dispersed in a second continuous aqueous phase W to form the multiple emulsion PS1/O/W, the emulsifier being a crosslinked elastomeric silicone polyether constituting polymeric molecules crosslinked together to form a gel consisting of three-dimensional molecular polymeric networks containing crosslinking units between and among the polymeric molecules, the crosslinked elastomeric silicone polyether further containing and being swollen by about 65 to about 98 percent by weight of the silicone oil.

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