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:
Dec. 22, 2020
Filed:
Apr. 29, 2019
Henkel Ip & Holding Gmbh, Duesseldorf, DE;
Henkel Ag & Co. Kgaa, Duesseldorf, DE;
Hartmut Manneck, Barnitz, DE;
Thomas Hippe, Appen, DE;
Marc Stucky, Rancho Palos Verdes, CA (US);
Stephanie Smith, Santa Monica, CA (US);
Robert Schaeffler, Marina del Rey, CA (US);
Abstract
A powder additive for a keratin fiber coloring or bleaching agent or developer is provided. The powder additive includes a dicarboxylic acid containing from about 2 to about 10 carbon atoms, selected from the group of malic acid, D-tartaric acid, L-tartaric acid, meso-tartaric acid, racemic acid, alpha-ketoglutaric acid, beta-ketoglutaric acid, oxaloacetic acid, maleic acid, fumaric acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sorbic acid, a salt of these dicarboxylic acids, and mixtures thereof. The powder additive also includes an amino acid or a salt of an amino acid and an alkalisilicate. The powder additive has no greater than about 10% by weight water, based on the weight of the powder additive. In addition, the powder additive includes particles and at least about 80% of the particles have an average particle size of less than 200 μm.