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. 30, 2021
Filed:
Apr. 09, 2018
L'oréal, Paris, FR;
Sandrine Chodorowski-Kimmes, Aulnay-sous-Bois, FR;
L'OREAL, Paris, FR;
Abstract
The invention relates to a hair dyeing process comprising at least one pigment, at least one additional component selected from cross linking agents and/or plasticizers and at least one block polymer comprising: a first block with a glass transition temperature (Tg) of greater than or equal to 40° C. derived from a monomer CH═C(R)—COOR2 in which R=H or methyl, R=Cto Ccycloalkyl group; and a second block with a glass transition temperature (Tg) of less than or equal to 20° C. derived from a vinylphosphonic acid and from a monomer CH2=C(R)—COORin which R=H or methyl, R=linear or branched Cto Cunsubstituted alkyl group, with the exception of a tert-butyl group or a methoxyethyl group.