Water-in-oil creams with polymeric emulsifiers
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsBrigitte Hase, Christian Hase, Joachim Galinke, Bernd Wegemund
Life of this patent
Estimating the term…
Abstract
Cosmetic emulsions containing from 2 to 20% by weight of polymeric emulsifiers capable of forming water-in-oil creams comprising a copolymer of N-vinylimidazole, an alkyl (meth)acrylate and optionally vinyl acetate; 20 to 75% by weight of water; and the remainder to 100% by weight of a cosmetically-acceptable oily substance.
Claims7
A cosmetic emulsion of the water-in-oil type consisting essentially of (1) from 2% to 20% by weight of a polymeric emulsifier capable of forming water-in-oil creams selected from the group consisting of (i) a copolymer of (a) N-vinylimidazole, (b) acrylates of the formula ##STR3## wherein R is a member having from 6 to 24 carbon atoms selected from the group consisting of alkyl, cycloalkyl, alkylcycloalkyl and oleyl, and R' is a member selected from the group consisting of hydrogen and methyl, and (c) vinyl acetate wherein the molar ratios of (a) + (c) :
- (b) are from 1:1 to 1:20 and the molar ratios of (c) :
- (a) are 0:1 to 3:1, and (ii) salts thereof with organic or inorganic acids, (2) from 20% to 75% by weight of water and (3) the remainder to 100% by weight of a cosmetically-acceptable oily phase.
Dependencies are inferred from the claim text.