	US 12,144,880 B2
	Cosmetic composition for the oxidative dyeing of keratin fibres
Ping Huang, Shanghai (CN); Wei Wei, Shanghai (CN); and Philippe Rapold, Shanghai (CN)
Assigned to L'OREAL, Paris (FR)
Filed by L'OREAL, Paris (FR)
Filed on Sep. 7, 2023, as Appl. No. 18/243,655.
Application 18/243,655 is a continuation of application No. 17/623,074, granted, now 11,752,082, previously published as PCT/CN2019/093593, filed on Jun. 28, 2019.
Prior Publication US 2023/0414471 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61Q 5/10 (2006.01); A61K 8/04 (2006.01); A61K 8/22 (2006.01); A61K 8/23 (2006.01); A61K 8/34 (2006.01); A61K 8/41 (2006.01); A61K 8/44 (2006.01); A61K 8/46 (2006.01); A61K 8/49 (2006.01); A61K 8/67 (2006.01); A61K 8/81 (2006.01)

CPC A61K 8/494 (2013.01) [A61K 8/046 (2013.01); A61K 8/22 (2013.01); A61K 8/23 (2013.01); A61K 8/347 (2013.01); A61K 8/411 (2013.01); A61K 8/415 (2013.01); A61K 8/447 (2013.01); A61K 8/46 (2013.01); A61K 8/4926 (2013.01); A61K 8/4953 (2013.01); A61K 8/676 (2013.01); A61K 8/8147 (2013.01); A61K 8/8158 (2013.01); A61Q 5/10 (2013.01); A61K 2800/4324 (2013.01); A61K 2800/48 (2013.01); A61K 2800/522 (2013.01); A61K 2800/5424 (2013.01); A61K 2800/882 (2013.01)]

19 Claims

1. A dye composition I, comprising:

(a) an oxidative dye in a range of from 0.0001 to 10 wt. %, relative to total dye composition I weight, the oxidative dye comprising an oxidation base comprising a para-phenylenediamine, bis(phenyl)alkylenediamine, para-aminophenol, ortho-aminophenol, heterocyclic base, or mixture thereof, optionally in addition salt form;

(b) an anionic polymer thickener in a range of from 0.1 to 10 wt. %, relative to the total dye composition I weight, the anionic polymer being derived from copolymerizing components comprising:

(1) an ethylenically unsaturated mono or dicarboxylic acid monomer comprising a linear C₁-C₁₀alkyl substituent, branched C₁-C₁₀alkyl substituent, or a combination of two or more of any of these; and

(2) an ester monomer of formula (I):

A-O-(Alk-O)_z—(CH₂)_w—R^a (I),

wherein

A is an ethylenically unsaturated acyclic residue, optionally comprising an additional carboxylic group or in salt form, the additional carboxylic group optionally being esterified with a linear or branched C₁-C₂₀alkyl group,

R^ais a linear or branched C₁-C₃₀alkyl group, alkylaryl group having from 1 to 30 carbon atoms, or arylalkyl group having from 1 to 30 carbon atoms, the alkyl group being linear or branched,

Alk is a linear or branched C₁-C₆alkylene group,

z is an integer in a range of from 0 to 50,

w is an integer in a range of from 0 to 30, with the proviso that the ester monomer of formula (I) comprises a carboxyl group C(O)OH, or C(O)O-Q⁺, Q⁺ being an alkali metal cation, alkaline earth metal cation, or ammonium cation; and

(c) an antioxidant in a range of from 0.001 to 5 wt. %, relative to the total dye composition I weight, comprising a thiol-derived reducer comprising thioglycolic acid, dithio glycolic acid, thiolactic acid, and/or thiomalic acid, optionally in salt form.