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. 29, 2014
Filed:
Aug. 05, 2011
Applicants:
Thomas Rudolph, Darmstadt, DE;
Philipp Buehle, Zwingenberg, DE;
Inventors:
Thomas Rudolph, Darmstadt, DE;
Philipp Buehle, Zwingenberg, DE;
Assignee:
Merck Patent GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
D06P 1/02 (2006.01); C09B 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to specific dye-ascorbic acid derivatives and the use thereof as dyes for the coloring of matrices, such as, for example, skin, hair, nails or textiles, and a process for the preparation thereof, a process for the coloring of matrices, and a composition comprising these dye-ascorbic acid derivatives, and a process for the preparation of these compositions. On use of the specific dye-ascorbic acid derivatives according to the invention, a positive effect on the moisture content of the matrices arises.