The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2003
Filed:
Sep. 27, 1999
Frank Golinski, Darmstadt, DE;
Heribert Lorenz, Gross-Bieberau, DE;
Goldwell GmbH, , DE;
Abstract
A stable, aqueous hair dyeing emulsion with good Theological properties is prepared, while simultaneously substantially reducing the manufacturing time and energy consumption, comprising at least one oxidation hair dyestuff precursor, by mixing a water-in-oil emulsion, comprising 10% to 50% by weight of at least one nonionic emulsifier, 10% to 50% by weight of at least one nonionic co-emulsifier selected from the group of C -C -fatty alcohols, C -C -fatty acid mono- and dialkanolamides and/or C -C -fatty acid esters with polyvalent alcohols, 5% to 40% by weight of oleic acid, and up to 25%, in particular 20% by weight of water, each calculated to the total w/o-emulsion composition, with an aqueous phase comprising at least one water-soluble surfactant. Mixing is carried out under shear force at 15° to 30° C., preferably at room temperature at about 20° to 25°.