US 2015/0272843 A1 · COMPOSITION COMPRISING A DICARBONYL DERIVATIVE AND METHOD FOR STRAIGHTENING THE HAIR USING THIS COMPOSITION

Abstract

The present invention relates to a cosmetic composition comprising: one or more dicarbonyl derivatives corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof: in which formula (I) R═H, COOH, linear or branched C1-C6 alkyl which is optionally substituted with an OH or COOH or Br radical; phenyl or benzyl optionally substituted with an OH or COOH radical; or alternatively an indolyl radical or one or more silanes corresponding to formula (II) below and/or oligomers thereof: R1Si(OR2)z(R3)x(OH)y (II) in which formula (II): R1 is a linear or branched, saturated or unsaturated, cyclic or acyclic C1-C6 hydrocarbon-based chain substituted with a group chosen from the following groups: amine NH2 or NHR (R═C1-C20 and especially C1-C6 alkyl optionally substituted with a radical comprising a silicon atom, C3-C40 cycloalkyl or C6-C30 aromatic), or with a hydroxyl group, a thiol group, an aryl or aryloxy group which is unsubstituted or substituted, in particular with an amino group or with a C1-C4 aminoalkyl group; R1 possibly being interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO), R2 and R3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms, y denotes an integer ranging from 0 to 3, and z denotes an integer ranging from 0 to 3, and x denotes an integer ranging from 0 to 2, with z+x+y=3. The invention also relates to a process for straightening keratin fibers, especially the hair, using the compounds of formulae (I) and (II) with a straightening step using a straightening iron at a temperature of at least 150° C., preferably ranging from 150 to 250° C.

Claims21

Dependent claims

A cosmetic composition comprising:

one or more dicarbonyl compounds corresponding to formula (I) below, and/or derivatives thereof and/or hydrates thereof and/or salts thereof:
in which formula (I):
R represents an atom or group chosen from i) hydrogen, ii) carboxy —C(O)—OH, iii) linear or branched C1-C6 alkyl which is optionally substituted, preferably with at least one hydroxyl —OH radical, carboxy —C(O)—OH radical or halogen such as Br;
iv) optionally substituted phenyl, v) optionally substituted benzyl, iv) and v) preferably being optionally substituted with at least one —OH or —C(O)—OH radical;
vi) an indolyl radical and vii) an imidazolylmethyl radical and tautomers thereof such as
with * representing the part linked to the rest of the molecule,
one or more silanes corresponding to formula (II) below and/or oligomers thereof:
R1Si(OR2)z(R3)x(OH)y (II)
in which formula (II):
R1 is a linear or branched, saturated or unsaturated, cyclic or acyclic C1-C6 hydrocarbon-based chain substituted with a group chosen from the following groups:
amine NH2 or NHR (R═C1-C20 and especially C1-C6 alkyl optionally substituted with a radical comprising a silicon atom, C3-C40 cycloalkyl or C6-C30 aromatic),
or with a hydroxyl group,
a thiol group,
an aryl or aryloxy group which is unsubstituted or substituted, in particular with an amino group or with a C1-C4 aminoalkyl group;
R1 possibly being interrupted with a heteroatom (O, S or NH) or a carbonyl group (CO),
R2 and R3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms,
y denotes an integer ranging from 0 to 3, and
z denotes an integer ranging from 0 to 3, and
x denotes an integer ranging from 0 to 2,
with z+x+y=3.

17 more elements

Dependencies are inferred from the claim text.

Composition comprising a dicarbonyl derivative and method for straightening the hair using this composition

Life of this patent

Composition comprising a dicarbonyl derivative and method for straightening the hair using this composition

Life of this patent

Abstract

Claims21