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:
Apr. 06, 2004
Filed:
Aug. 27, 2002
Susanne Birkel, Darmstadt, DE;
Harald Wendel, Ober-Ramstadt, DE;
Michael Franzke, Rossdorf, DE;
Silke Niesig, Gross-Bieberau, DE;
Wella Aktiengesellschaft, Darmstadt, DE;
Abstract
The aqueous hair fixing gel has special rheological properties so that it can be dispensed from a container without dripping or becoming stringy. It contains from 1.5 to 10 percent by weight of at least one itaconic acid monoester/acrylate copolymer and from 0.1 to 15 percent by weight of at least one non-ionic, anionic, zwitterionic or amphoteric hair-fixing polymer. The itaconic acid monoester has a formula CH ═C(COOR )CH COOR , wherein one of R and R represents hydrogen and the other represents —(CH CH O) —R , x is between 1 to 100 and R is an alkyl group having 8 to 30 carbon atoms. The aqueous hair treatment gel has a pH of greater than 7 and a viscosity of preferably from 2000 to 50,000 mPa.s, as measured at 25° C. The gel is formulated so that there is a gel viscosity maximum as a function of shear rate with increasing shear rate, preferably between 0.1 to 5.0 s .