WO2018109971A1

WO2018109971A1 - Compositions for treating keratin fibers comprising aminosilicone and poly (carbodiimide)

Info

Publication number: WO2018109971A1
Application number: PCT/JP2017/025467
Authority: WO
Inventors: Mitsuru Shimatani; Adrien KAESER
Original assignee: L'oreal
Priority date: 2016-12-12
Filing date: 2017-07-05
Publication date: 2018-06-21
Also published as: JP2018127400A

Abstract

The present invention relates to a composition comprising (1) at least one aminosilicone compound; and (2) at least one poly(carbodiimide) compound, wherein the amount of the aminosilicone compound is 3% by weight or more relative to the total weight of the composition. It is possible for the present invention to provide keratin fibers such as hair with easy-to-style manageability which can last for a long period of time such as up to a month after treatment, and can last even after home routines such as shampooing.

Description

DESCRIPTION

COMPOSITIONS FOR TREATING KERATIN FIBERS COMPRISING AMINOSILICONE

AND POLY(C ARB ODIIMIDE)

TECHNICAL FIELD

The present invention relates to a composition for treating keratin fibers, preferably hair, comprising two components, as well as a kit, process, and use relating to the composition.

BACKGROUND ART

In the field of hair cosmetics, hair manageability is very important for all types of hair including straight and wavy hair, especially difficult-to-manage hair such as unruly or naturally wavy hair which has a relatively large volume and/or tends to be frizzy.

Typical conventional means to manage unruly and frizzy hair with a large volume is the application of one or more treatment on the hair, whose effects of reducing volume and improving smoothness and softness of the hair generally last up to only a few days. In addition, such treatments in salon do not withstand home routines such as shampooing.

Therefore, there is a need to provide long-lasting manageability to difficult-to-manage hair such as unruly or naturally wavy, thick hair which tends to be frizzy. DISCLOSURE OF INVENTION

An objective of the present invention is to provide a means to provide keratin fibers such as hair with improved manageability which can last for a long period of time such as up to a month after treatment, and can last even after home routines such as shampooing.

The above objective can be achieved by a composition comprising:

(1) at least one aminosilicone compound; and

(2) at least one poly(carbodiimide) compound,

wherein

the amount of the aminosilicone compound is 3% by weight or more relative to the total weight of the composition.

The poly(carbodiimide) compound may be selected from: a compound represented by the following formula:

wherein

X] and X₂ each independently represents O, S or NH;

Rj and R₂ each independently represents a hydrocarbon group which may contain one or more heteroatom(s);

n and z are each independently an integer equal to 0 to 20, wherein n+z is at least 2; Li independently represents a CI to CI 8 divalent aliphatic hydrocarbon group, a C3 to C13 divalent alicyclic hydrocarbon group, a C3 to C12 divalent heterocyclic group, or a C6 to C14 divalent aromatic hydrocarbon group that is not chosen from m-tetramethylxyly lene ;

E independently represents a group selected from:

-0-R₃-0-; -S-R4-S-;

-R₅-N(R₆)-R₄-N(R₆)-R₅-; wherein

R₃ and R4 each independently represents a divalent hydrocarbon group that may contain one or more heteroatom(s);

R₅ independently represents a single bond or a divalent hydrocarbon group, wherein the hydrocarbon group may include one or more heteroatom(s); and

R independently represents a hydrogen atom or a hydrocarbon group, wherein the hydrocarbon group may include one or more heteroatom(s), or a co-polymer derived from alpha-methylstyryl-isocyanates, the co-polymer represented by the following formula:

wherein

R is independently an alkyl group preferably having from 1 to 24 carbon atoms, a cycloalkyl group preferably having from 3 to 24 carbon atoms, or an aryl group preferably having from 6 to 24 carbon atoms, and

n is an integer equal to 2 to 100, or a compound represented by the following structure: R N=C^=N CH^

CH (CH₂)₃-N=C=N R

R N=C^=N CH₂ wherein R is independently an alkyl group preferably having from 1 to 24 carbon atoms, a cycloalkyl group preferably having from 3 to 24 carbon atoms, or an aryl group preferably having from 6 to 24 carbon atoms. The amount of the amino silicone compound may be from 3% to 20% by weight, preferably from 5% to 15% by weight, relative to the total weight of the composition. The amount of the poly(carbodiimide) compound may be from 0.01% to 20% by weight, preferably from 0.1% to 10% by weight, more preferably from 1% to 5% by weight, relative to the total weight of the composition.

The weight of the aminosilicone compound may be greater than the weight of the

poly(carbodiimide) compound.

Preferably, the composition may be for treating keratin fibers, preferably hair, and preferably for reducing the volume of hair. The composition may comprise;

(1) a first phase; and

(2) a second phase,

wherein

the first phase comprises the aminosilicone compound; and

the second phase comprises the poly(carbodiimide) compound,

and wherein the first phase and the second phase are separated.

The present invention also relates to a kit comprising:

(1) a first compartment comprising a first composition; and

(2) a second compartment comprising a second composition,

wherein

the first composition comprises at least one aminosilicone compound, and

the second composition comprises at least one poly(carbodiimide) compound, and the amount of the aminosilicone compound is 3% by weight or more relative to the total weight of the first and second compositions.

Preferably, the kit may be intended for treating keratin fibers, preferably hair, preferably for reducing the volume of hair. The present invention also relates to a process for treating keratin fibers, preferably hair, comprising:

(1) applying the composition according to the present invention to the keratin fibers; and

(2) drying the keratin fibers. The present invention also relates to a process for treating keratin fibers, preferably hair, comprising:

(1) separately applying a first composition and a second composition to the keratin fibers; and

(2) drying the keratin fibers,

wherein

the first composition comprises at least one aminosilicone compound, and

the second composition comprises at least one poly(carbodiimide) compound.

Preferably, the process may be intended for reducing the volume of hair. The present invention also relates to a use of a combination of at least one aminosilicone compound and at least one poly(carbodiimide) compound, for reducing the volume of hair.

BEST MODE FOR CARRYING OUT THE INVENTION

After diligent research, the inventors have discovered that it is possible to provide keratin fibers such as hair with improved manageability which can last for a long period of time such as up to a month after treatment, and can last even after home routines such as shampooing. Thus, the present invention mainly relates to a composition comprising:

(1) at least one aminosilicone compound; and

(2) at least one poly(carbodiimide) compound,

wherein

The present invention can easily manage the style of keratin fibers such as hair with a simple treatment using a composition comprising two active compounds or two distinct compositions each comprising an active compound.

The use of the composition according to the present invention can condition keratin fibers. For example, according to the present invention, the apparent volume of an assembly of keratin fibers can be reduced or controlled. Especially, the volume of hair, in particular of naturally wavy hair, can be reduced or controlled. In addition, the frizz of keratin fibers such as hair, in particular difficult-to-manage hair which tends to be frizzy, can be reduced. Also, the discipline of keratin fibers can be improved such that the keratin fibers can be easily styled with a comb or a brush. Furthermore, the feel to the touch and running the fingers through the keratin fibers can be improved. The above easy-to-style manageability can last for a long period of time such as at least one week or at least a month, and can last after home routines such as shampooing.

The present invention is compatible with any kind of hair care product, and can also be combined with home routines such as shampooing, conditioning or treatment for synergistic effects.

The "keratin fibers" here mean fibers which include at least one keratin substance. It is preferable that at least a part of the surface of the keratin fibers be formed by keratin substances. Examples of keratin fibers include hair, eyebrows, eyelashes, and the like. It is preferable that the present invention be used for treating hair.

Hereafter, the present invention will be described in a detailed manner.

[Composition]

One aspect of the present in invention relates to a composition comprising:

(1) at least one aminosilicone compound; and

(2) at least one poly(carbodiimide) compound,

wherein

(Aminosilicone Compound) The composition comprises at least one aminosilicone compound. A single type of aminosilicone compound may be used, or two or more different types of aminosilicone compounds may be used in combination.

As the aminosilicone compound, any aminosilicone compound in the field of cosmetics may be used.

The term "aminosilicone compound" here means a silicone comprising at least one primary, secondary or tertiary amine group or at least one quaternary ammonium group. As aminosilicone compounds that may be used in the invention, the following can be cited:

Polysiloxanes corresponding to formula (A):

in which x' and y' are independently integers such that the weight-average molecular weight (Mw) is between about 5,000 and 500,000;

(ii) Aminosilicone compounds corresponding to formula (B):

R'aG(_3-a)-Si(OSiG₂)_n-(OSiG_bR'₍2-b))m-0-SiG₍3_-a.)R'a' (B)

in which:

G independently designates a hydrogen atom, or a phenyl, OH, or a C1-C8 alkyl group, for example methyl, or a C1-C8 alkoxy group, for example methoxy,

a and a' independently denote the number 0 or an integer from 1 to 3, in particular 0; b denotes 0 or 1 , and in particular 1 ;

m and n are numbers such that the sum (n + m) ranges from 1 to 2,000 and in particular from 50 to 150, it being possible for n to denote a number from 0 to 1,999 and in particular from 49 to 149, and for m to denote a number from 1 to 2,000 and in particular from 1 to 10;

R' independently denotes a monovalent group having formula -C_qH2_qL in which q is a number ranging from 2 to 8 and L is an optionally quatemized amino group chosen from the following groups:

-NR"-Q-N(R")₂

-N(R")₂

-N⁺(R")₃ A^"

-N⁺H(R")₂ A^"

-N⁺H₂(R") A^"

-NR"-Q-N⁺R"H₂ A^"

-NR"-Q-N⁺ (R")₂H A^" -NR"-Q-N⁺ (R")₃ A^",

in which

R" independently denotes hydrogen, phenyl, benzyl, or a saturated monovalent hydrocarbon-based group, for example a C1-C20 alkyl group;

Q denotes a linear or branched C_rH_2r group, r being an integer ranging from 2 to 6, preferably from 2 to 4; and

A^" represents a cosmetically acceptable ion, in particular a halide such as fluoride, chloride, bromide or iodide.

A group of aminosilicone compounds corresponding to this definition (B) is represented by the silicones called "trimethylsilylamodimethicone" having formula (C):

(CH₃)₃ Si O -

in which n and m have the meanings given above, in formula B.

Another group of aminosilicone compounds corresponding to this definition is represented by silicones having the following formula (D) or (E): R, (D)

in which:

m and n are numbers such that the sum (n + m) can range from 1 to 1 ,000, in particular from 50 to 250 and more particularly from 100 to 200, it being possible for n to denote a number from 0 to 999 and in particular from 49 to 249, and more particularly from 125 to 175, and for m to denote a number from 1 to 1,000 and in particular from 1 to 10, and more particularly from 1 to 5;

R_{1 ;} R₂, and R₃ independently represent a hydroxy or a C1-C4 alkoxy group, wherein at least one of the groups Rl to R3 denotes an alkoxy group.

The alkoxy group is preferably a methoxy group.

The hydroxy/alkoxy mole ratio ranges preferably from 0.2: 1 to 0.4: 1 and preferably from 0.25:1 to 0.35:1 and more particularly equals 0.3:1.

The weight-average molecular weight (Mw) of the silicone ranges preferably from 2,000 to 1,000,000, more particularly from 3,500 to 200,000.

in which:

p and q are numbers such that the sum (p + q) ranges from 1 to 1,000, particularly from 50 to 350, and more particularly from 150 to 250; it being possible for p to denote a number from 0 to 999 and in particular from 49 to 349, and more particularly from 159 to 239 and for q to denote a number from 1 to 1,000, in particular from 1 to 10, and more particularly from 1 to 5;

Ri and R₂ independently represent a hydroxy or C1 -C4 alkoxy group, where at least one of the groups Rl or R2 denotes an alkoxy group.

The alkoxy group is preferably a methoxy group.

The hydroxy/alkoxy mole ratio ranges generally from 1 :0.8 to 1 : 1.1 and preferably from 1 :0.9 to 1 : 1 and more particularly equals 1 :0.95.

The weight-average molecular weight (Mw) of the silicone ranges preferably from 2,000 to 200,000, even more particularly 5,000 to 100,000 and more particularly from 10,000 to 50,000.

Commercial products corresponding to these silicones having structure (D) or (E) may include in their composition one or more other aminosilicone compounds whose structure is different from formula (D) or (E).

A product containing aminosilicone compounds having structure (D) is sold by Wacker under the name BELSIL ADM 652.

A product containing aminosilicone compounds having structure (E) is sold by Wacker under the name FLUID WR 1300®.

Another group of aminosilicone compounds corresponding to this definition is represented by the following formula (F):

CH₃ †H₃ CH, †H₃

HO- Si— O Si - O— Si - -O— Si— OH

1 I

CH₃ CH₃ I CH,

NH

(CH₂)₂ (F)

NH, m

in which:

m and n are numbers such that the sum (n + m) ranges from 1 to 2,000 and in particular from 50 to 150, it being possible for n to denote a number from 0 to 1,999 and in particular from 49 to 149, and for m to denote a number from 1 to 2,000 and in particular from 1 to 10; A denotes a linear or branched alkylene group containing from 4 to 8 carbon atoms and preferably 4 carbon atoms. This group is preferably linear.

The weight-average molecular weight (Mw) of these aminosilicone compounds ranges preferably from 2,000 to 1,000,000 and even more particularly from 3,500 to 200,000.

A preferred silicone of formula (F) is amodimethicone sold under the tradename

XIAMETER® MEM-8299 Cationic Emulsion by Dow Corning.

Another group of aminosilicone compounds corresponding to this definition is represented by the following formula (G):

†H₃ CH, CH, CH,

H₃C- -Si- o- S Ii - O— Si - -Si— CH,

I CH, CH, (G)

n NH

(CH₂)₂

NH- m

in which:

A denotes a linear or branched alkylene group containing from 4 to 8 carbon atoms and preferably 4 carbon atoms. This group is preferably branched.

The weight-average molecular weight (Mw) of these aminosilicone compounds ranges preferably from 500 to 1,000,000 and even more particularly from 1,000 to 200,000.

A silicone having this formula is for example DC2-8566 Amino Fluid by Dow Corning.

(iii) Aminosilicone compounds corresponding to formula (H):

in which:

R₅ independently represents a monovalent hydrocarbon-based group containing from 1 to 18 carbon atoms, and in particular a CI -CI 8 alkyl or C2-C18 alkenyl group, for example methyl;

R₆ represents a divalent hydrocarbon-based group, in particular a CI -CI 8 alkylene group or a divalent C1-C18, for example C1-C8, alkyleneoxy group linked to the Si via an SiC bond;

Q^" is an anion such as a halide ion, in particular chloride, or an organic acid salt (for example acetate);

r represents a mean statistical value from 2 to 20 and in particular from 2 to 8; s represents a mean statistical value from 20 to 200 and in particular from 20 to 50. Such aminosilicone compounds are described more particularly in patent US 4 185 087. (iv) Quaternary ammonium silicones having formula (I):

2X-

FL OH R,

R„ - N - CH,-CH-CH - R₆ -I- Si - O Si— R_R - CH, - CH0H - CH - N (I)

I I ^{6 2 2} I

R, R, R₇ R; in which:

R₇ independently represents a monovalent hydrocarbon-based group containing from 1 to 18 carbon atoms, and in particular a CI -CI 8 alkyl group, a C2-C18 alkenyl group or a ring containing 5 or 6 carbon atoms, for example methyl;

R₆ independently represents a divalent hydrocarbon-based group, in particular a CI -CI 8 alkylene group or a divalent CI -CI 8, for example C1-C8, alkyleneoxy group linked to the Si via a SiC bond;

R-8 independently represents a hydrogen atom, a monovalent hydrocarbon-based group containing from 1 to 18 carbon atoms, and in particular a CI -CI 8 alkyl group, a C2-C18 alkenyl group or a -R₆-NHCOR₇ group;

X^" is an anion such as a halide ion, in particular chloride, or an organic acid salt (for example acetate);

r represents a mean statistical value from 2 to 200 and in particular from 5 to 100; These silicones are described, for example, in patent application EP-A 0 530 974.

Aminosilicone compounds having formula (J):

H₂N - (C_mH₂J - NH - (C_nH_2n) - Si O (J)

in which:

R_l5 R₂, R₃ and R4 independently denote a C1-C4 alkyl group or a phenyl group; R₅ denotes a C1-C4 alkyl group or a hydroxy group;

m is an integer ranging from 1 to 5;

n is an integer ranging from 1 to 5;

and in which x is chosen such that the amine number is between 0.01 and 1 meq/g;

(vi) Multiblock polyoxyalkylenated aminosilicone compounds, of type (AB)„, A being a polysiloxane block and B being a polyoxyalkylenated block containing at least one amine group. Said silicones are preferably constituted of repeating units having the following general formula:

[-(SiMe₂0)_xSiMe₂ - R -N(R")- R'-O(C₂H₄0)a(C₃H₆O)_b -R'-N(H)-R-]

or alternatively

[-(SiMe₂0)_xSiMe₂ - R -N(R")- R - 0(C₂H₄0)_a(C₃H₆0)_b -]

in which:

a is an integer greater than or equal to 1, preferably ranging from 5 to 200, more particularly ranging from 10 to 100; b is an integer comprised between 0 and 200, preferably ranging from 4 to 100, more particularly between from 5 and 30;

x is an integer ranging from 1 to 10,000, more particularly from 10 to 5,000;

R" is a hydrogen atom or a methyl;

R independently represents a divalent linear or branched C2-C12 hydrocarbon-based group, optionally including one or more heteroatoms such as oxygen; preferably, R independently denotes an ethylene group, a linear or branched propylene group, a linear or branched butylene group, or a -CH₂CH₂CH₂OCH(OH)CH₂- group; preferentially R independently denotes a -CH₂CH₂CH₂OCH(OH)CH₂- group;

R' independently represent a divalent linear or branched C2-C12 hydrocarbon-based group, optionally including one or more heteroatoms such as oxygen; preferably, R' denotes an ethylene group, a linear or branched propylene group, a linear or branched butylene group, or a -CH₂CH₂CH₂OCH(OH)CH₂- group; preferentially R' denotes -CH(CH₃)-CH₂-.

The siloxane blocks preferably represent between 50 and 95 mol% of the total weight of the silicone, more particularly from 70 to 85 mol%.

The amine content is preferably between 0.02 and 0.5 meq/g of copolymer in a 30% solution in dipropylene glycol, more particularly between 0.05 and 0.2.

The weight-average molecular weight (Mw) of the silicone is preferably between 5,000 and 1,000,000, more particularly between 10,000 and 200,000.

Mention may be made especially of the silicones sold under the names SILSOFT A-843 or SILSOFT A+ by Momentive.

Alkylaminosilicone compounds corresponding to formulae (K' and ) below:

in which

R, R' and R" independently represent a C1-C4 alkyl or hydroxy group,

A represents a C3 alkylene group and m and n are such that the weight-average molecular mass of the compound is between 5,000 and 500,000 approximately;

in which: x and y are numbers ranging from 1 to 5,000; preferably, x ranges from 10 to 2,000 and especially from 100 to 1,000; preferably, y ranges from 1 to 100;

Rl and R2 independently preferably identical, are linear or branched, saturated or unsaturated alkyl groups, comprising 6 to 30 carbon atoms, preferably 8 to 24 carbon atoms and especially 12 to 20 carbon atoms;

A denotes a linear or branched alkylene group containing from 2 to 8 carbon atoms. Preferably, A comprises 3 to 6 carbon atoms, especially 4 carbon atoms; preferably, A is branched.

Mention may be made especially of the following divalent groups: -CH₂CH₂CH₂- and -CH₂CH(CH₃)CH₂-.

Preferably, Rl and R2 are independently saturated linear alkyl groups comprising 6 to 30 carbon atoms, preferably 8 to 24 carbon atoms and especially 12 to 20 carbon atoms; mention may be made in particular of dodecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl groups; and preferentially, Rl and R2, which may be identical or different, are chosen from hexadecyl (cetyl) and octadecyl (stearyl) groups.

Preferentially, the silicone is of formula ( ) with:

x ranging from 10 to 2,000 and especially from 100 to 1,000;

y ranging from 1 to 100;

A comprising 3 to 6 carbon atoms and especially 4 carbon atoms; preferably, A is branched; and more particularly A is chosen from the following divalent groups: CH₂CH₂CH₂ and -CH₂CH(CH₃)CH₂-; and

Rl and R2 independently being linear, saturated alkyl groups comprising 6 to 30 carbon atoms, preferably 8 to 24 carbon atoms and especially 12 to 20 carbon atoms; chosen in particular from dodecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl groups; preferentially, Rl and R2, which may be identical or different, being chosen from hexadecyl (cetyl) and octadecyl (stearyl) groups.

A preferred silicone of formula (K) is bis-cetearyl amodimethicone.

Mention may be made especially of the silicone sold under the name SILSOET AX by Momentive.

The aminosilicone compounds of the present disclosure may also be chosen from

polydimethylsiloxanes comprising primary amine groups at the chain end or on side chains, for example aminopropyl end or side groups, for instance those of formula (A), (B), or (C):

(B)

H₂NCH₂CH₂CHrSi(CH₃)rO-tSi(CH₃)₂-Oi_rt-Si(CH3)₂C₄H₉ (C)

In formula (A): the value of n is such that the weight-average molecular weight of the silicone is between 500 and 55,000. As an example of aminosilicone (A), mention may be made of those sold under the names DMS-A11, DMS-A12, DMS-A15, DMS-A21, DMS-A31, DMS-A32 and DMS-A35 by the company Gelest.

In formula (B), the values of n and m are such that the weight-average molecular weight of the silicone is between 1,000 and 55,000. As examples of silicone (B), mention may be made of those sold under the names AMS-132, AMS-152, AMS-162, AMS-163, AMS-191 and AMS-1203 by the company Gelest and KF-8015 by the company Shin Etsu.

In formula (C), the value of n is such that the weight-average molecular weight of the silicone is between 500 and 3,000. As an example of silicone (C), mention may be made of those sold under the names MCR-A11 and MCR-A12 by the company Gelest.

Preferably, the aminosilicone compound according to the invention is amodimethicone such as the amodimethicone sold under the name KF 8020 from the supplier Shin Etsu, or the tradename SILSOFT 253 from the supplier MOMENTIVE PERFORMANCE MATERIALS. Another preferred aminosilicone compound is an amodimethicone of formula (F) sold under the tradename XIAMETER® MEM-8299 Cationic Emulsion by Dow Corning.

In other embodiments, the aminosilicone according to the invention is chosen from

bis-cetearyl amodimethicone (sold under the name SILSOFT AX by Momentive).

Another preferred aminosilicone compound that may be used in the composition of the present invention is aminopropyl dimethicone, for example, aminopropyl dimethicone sold under the name KF-8015 from Shin Etsu. Aminosilicones suitable for use according to the present invention include, but are not limited to, volatile and non-volatile, cyclic, linear, and branched aminosilicones having a viscosity ranging from 5 l 0^"6 to 2.5 m²/s at 25°C, for example, from l lO^"5 to 1 m²/s. The amount of the aminosilicone compound in the first composition may be 3% by weight or more, preferably 4% by weight or more, more preferably 5% by weight or more, and even more preferably 7% by weight or more, relative to the total weight of the composition. The amount of the aminosilicone compound in the first composition may be 20% by weight or less, preferably 18% by weight or less, more preferably 15% by weight or less, and even more preferably 12% by weight or less, relative to the total weight of the composition.

The amount of the aminosilicone compound in the first composition may range from 3% to 20% by weight, preferably from 4% to 18% by weight, more preferably from 5% to 15% by weight, and even more preferably from 7% to 12% by weight, relative to the total weight of the composition.

(Poly(carbodiimide) compound)

The composition comprises at least one poly(carbodiimide) compound. A single type of poly(carbodiimide) compound may be used, or two or more different types of

poly(carbodiimide) compound may be used in combination.

As the poly(carbodiimide) compound, any poly(carbodiimide) compound in the field of cosmetics may be used.

The term "poly(carbodiimide) compound" here means a compound comprising at least two carbodiimide groups, preferably three or more carbodiimide groups.

The term "carbodiimide group" means a linear triatomic moiety generally depicted by:

- (N=C=N) -

According to one particular embodiment of the present invention, the poly(carbodiimide) compound can be chosen from the compounds represented by the following formula:

wherein

Xi and X₂ each independently represent O, S or NH;

Ri and R₂ each independently represent a hydrocarbon group which may contain one or more heteroatom(s);

n and z are each independently an integer equal to 0 to 20, wherein n+z is at least 2;

Lj independently represents a CI to CI 8 divalent aliphatic hydrocarbon group, a C3 to CI 3 divalent alicyclic hydrocarbon group, a C3 to CI 2 divalent heterocyclic group, or a C6 to C14 divalent aromatic hydrocarbon grou that is not chosen from m-tetramethylxylylene;

E independently represents a group selected from:

-O-R3-O-; -S-R4-S-;

-R₅-N(R₆)-R₄-N(R₆)-R₅-; wherein

R₃ and R4 each independently represent a divalent hydrocarbon group that may contain one or more heteroatom(s);

R₆ independently represents a hydrogen atom or a hydrocarbon group, wherein the hydrocarbon group may include one or more heteroatom(s). The hydrocarbon group may be a linear or branched, saturated or unsaturated CI to C300 hydrocarbon group, preferably CI to C250 hydrocarbon group, more preferably CI to C200 hydrocarbon group. The hydrocarbon group may comprise at least one cyclic moiety.

Preferably, the hydrocarbon group is linear and saturated. The "heteroatom" here means O, N, S and P as well as halogen atoms such as CI, F, Br and I. If the heteroatom is included in the chain of the hydrocarbon group, the heteroatom is preferably selected from O, N and S.

Xi and X₂ may be preferably O.

R_\ and R₂ may be each independently selected from dialkylamino alcohols,

hydroxycarboxylic acid alkyl esters, and (poly)alkylene glycol monoalkyl ethers, from which a hydroxy group has been removed. In one embodiment, Ri and R₂ may be independently selected from groups (i) to (iv) below:

(i) The compound represented by the following chemical formula:

R₇-0-C(0)-C(R₈)H- wherein

R₇ is a CI to C3 alkyl; and

R₈ is a hydrogen atom or a CI to C3 alkyl.

R may be methyl and R₈ may be a hydrogen atom or. methyl.

(ii) The compound represented by the following chemical formula:

R₉ is a CI to C4 alkyl group;

Rio is a hydrogen atom or a CI to C4 alkyl; and

p is an integer equal to 1 to 3.

R₉ may be methyl and Ri₀ may be a hydrogen atom or methyl.

(iii) The compound represented by the following chemical formula:

(R_U)₂N-CH₂-CHR₁₂- wherein

Rn is a CI to C4 alkyl group; and

R₁₂ is a hydrogen atom or a CI to C4 alkyl group.

Rn may be methyl, ethyl or butyl, and R₁₂ may be a hydrogen atom or methyl.

(iv) The compound represented by the following chemical formula:

R₁₃-(0-CH₂-CHR₁₄)_q- wherein

R₁₃ is a CI to C4 alkyl group or a phenyl group;

R₁₄ is a hydrogen atom or a CI to C4 alkyl group; and

q is an integer equal to 4 to 30.

Preferably, Ri and R₂ may be different. More preferably, one

and R₂ may be selected from groups (i) to (iii) above, and the other one of Rj and R₂ may be group (iv) above.

In one embodiment, L_\ may be selected from a CI to CI 8 divalent aliphatic hydrocarbon group such as methylene, ethylene and propylene groups, a C3 to CI 3 divalent alicyclic hydrocarbon group such as cyclopentylene, cycloheptylene and cyclohexylene, a C3 to C12 divalent heterocyclic group such as divalent groups of imidazol, pyrrol and furan, i.e., imidazolylene, pyrrolylene and furanylene, a C6 to C14 divalent aromatic hydrocarbon group such as phenylene, or a combination thereof.

For example, according to one particular embodiment of the invention, may be a radical derived from tolylene diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, 1,12-diisocyanate dodecane, norbornane diisocyanate, 2,4-bis-(8-isocyanateoctyl)-l ,3-dioctylcyclobutane, 4,4'-dicyclohexylmethane diisocyanate, tetramethylxylylene diisocyanate, isophorone diisocyanate, 1,5-naphthylene diisocyanate, 4,4'-diphenylmethane diisocyanate, 4,4'-diphenyldimethylmethane diisocyanate, and phenylene diisocyanate, wherein the two isocyanate groups are removed to form a divalent group corresponding to Lj. Specifically, when Lj is a C6 to C14 divalent aromatic hydrocarbon group,

is not a m-tetramethylxylylene group, which is represented by the following structure:

R₃ and R4 may be preferably selected from a C6 to CI 4 arylene group such as phenylene, a C3 to C12 cycloaliphatic divalent group such as cyclopropylene and cyclobutylene, or a linear or branched CI to CI 8 alkylene group such as methylene and ethylene, which may contain one or more heteroatoms, including halogen atoms.

When R₅ is not a single bond, R₅ may be preferably selected from the divalent groups described for R₃ and R4 above.

When R₆ is not a hydrogen atom, R₆ may be preferably selected from the divalent groups described for R₃ and R4 above.

According to another particular embodiment of the invention, the poly(carbodiimide) compound is a co-polymer derived from alpha-methylstyryl-isocyanates, the co-polymer being represented by the following formula:

wherein

n is an integer equal to 2 to 100. The alkyl group in this embodiment means a linear or branched alkyl group having 1 to 24 carbon atoms, preferably 1 to 20 carbon atoms, and more preferably 1 to 12 carbon atoms. As the alkyl group, mention may be made of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, isopentyl, hexyl, isohexyl, heptyl, octyl, nonyl and decyl groups. The cycloalkyl group in this embodiment means a cyclic alkyl group having 3 to 24 carbon atoms, preferably 3 to 20 carbon atoms, and more preferably 3 to 12 carbon atoms. As the cycloalkyl, mention may be made of cyclopropyl, cyclopentyl, and cyclohexyl groups.

As the aryl group, mention may be made of phenyl, tolyl, xylyl, naphthyl, methylnaphthyl, anthryl, phenanthryl, and biphenyl groups.

In one embodiment, n may be an integer equal to 2 to 50, preferably 3 to 30, more preferably 5 to 10 When n is expressed as an average degree of polymerization, n is any number from 2 to 50, preferably 3 to 30 and more preferably 5 to 10.

According to another particular embodiment of the invention, the poly(carbodiimide) compound is a compound represented by the following structure:

R N=C^= CH₂

CH (CH₂)₃-N=C=N R

R -N:^C^=N CH₂ wherein R is independently an alkyl group preferably having from 1 to 24 carbon atoms, a cycloalkyl group preferably having from 3 to 24 carbon atoms, or an aryl group preferably having from 6 to 24 carbon atoms. The alkyl group, cycloalkyl group and aryl group are as described above. The poly(carbodiimide) compound are sold, for example, under the tradenames Carbodilite V-02, Carbodilite V-04, Carbodilite E-03A, Carbodilite SV-02, and Carbodilite V-02-L2, by the company Nisshinbo Chemical. Preferably, the product marketed under the tradename Carbodilite V-02-L2 by Nisshinbo Chemical may be used in the composition of the present invention.

The amount of the poly(carbodiimide) in the composition may be 0.01% by weight or more, preferably 0.1% by weight or more, and more preferably 1% by weight or more, relative to the total weight of the composition. The amount of the poly(carbodiimide) in the

composition may be 20% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.

The amount of the poly(carbodiimide) in the composition may range from 0.01% to 20% by weight, preferably from 0.05% to 10% by weight, and more preferably from 0.5% to 4% by weight, relative to the total weight of the composition.

According to one particular embodiment of the invention, the weight of the aminosilicone compound in the composition is greater than the weight of the poly(carbodiimide) compound.

(Optional Additives) -Oil

The composition of the present invention may comprise one or more oils other than the aminosilicone compound. The term "oil" here means a fatty compound or substance which is in the form of a liquid or a paste (non-solid) at room temperature (25°C) under atmospheric pressure (760 mniHg). As the oils, those generally used in cosmetics can be used alone or in combination thereof. Oils that can be contained in the composition of the present invention include oils of plant or animal origin, synthetic oils such as isododecane, silicone oils such as dimethicone and cyclopentasioloxane, hydrocarbon oils and fatty alcohols.

The oil may be present in the composition in an amount of 50% by weight or less, preferably 40% by weight or less, and more preferably 30% by weight or less, relative to the total weight of the composition.

The composition of the present invention may be substantially free from oil. -Solvent

The composition of the present invention may comprise one or more solvents other than oil, preferably hydrophilic solvents or water-miscible solvents. Solvents that can be contained in the composition of the present invention include substantially linear or branched lower mono-alcohols having from 1 to 8 carbon atoms, such as ethanol; aromatic alcohols; polyols or polyol ethers such as glycerin and butylene glycol; propylene glycol ethers, diethylene glycol alkyl ethers; and polyethylene glycols.

The solvent may be present in the composition in an amount of 30%) by weight or less, preferably 20%) by weight or less, and more preferably 15% by weight or less, relative to the total weight of the composition. The composition of the present invention may be substantially free from solvent. -Surfactant

The composition of the present invention may comprise one or more surfactant. Surfactants that can be contained in the composition of the present invention may be selected from nonionic, anionic, amphoteric, zwitterionic, cationic emulsifiers, and mixtures thereof. Preferably, silicone surfactants such as PEG- 10 dimethicone, PEG- 12 dimethicone, PEG/PPG- 18- 18 dimethicone and dimethicone crosspolymer may be comprised.

The surfactant may be present in the composition in an amount ranging from 0.01% to 20% by weight, preferably from 0.05% to 15% by weight, and more preferably from 0.1% to 10% by weight, relative to the total weight of the composition. -Thickener

The composition of the present invention may comprise one or more thickener. Thickeners that can be contained in the composition of the present invention include crosslinked copolymer such as SEPIGEL 305 (polyacrylamide/C13-14 isoparaffin/Laureth-7) and hydrophilic acrylic polymer such as ammonium polyacryloyldimethyl taurate.

The thickener may be present in the composition in an amount ranging from 0.001% to 20% by weight, preferably from 0.01% to 10% by weight, and more preferably from 0.1% to 5% by weight, relative to the total weight of the composition. The composition of the present invention may be substantially free from thickener.

-Stabilizer

The composition of the present invention may comprise one or more stabilizer. Stabilizers that can be contained in the composition of the present invention include salts such as magnesium sulfate.

The stabilizer may be present in the composition in an amount ranging from 0.01% to 10% by weight, preferably from 0.1% to 5% by weight, and more preferably from 0.3% to 3% by weight, relative to the total weight of the composition.

-Other additive(s)

The composition may also contain various other additives used in cosmetics for keratin fibers such as hair, such as polymers, antioxidants, sequestering agents, fragrances, dispersing agents, emulsifying agent, conditioning agents, film-forming agents, ceramides, preservatives, and opacifying agents.

The composition may comprise water.

The amount of water in the composition may range from 5% to 99% by weight, preferably from 30% to 95% by weight, and more preferably from 35% to 90% by weight, relative to the total weight of the composition.

The compositions according to the present invention can be used as a composition for treating keratin fibers. For example, the composition may function as a hair care product, and may also be combined with home routines such as shampooing, conditioning or treatment for synergistic effects. Thus, the compositions according to the present invention can be cosmetic compositions for keratin fibers. It is preferable that the compositions according to the present invention be used for treating hair. In one particular embodiment of the invention, the composition according to the present invention is used for reducing the volume of hair, for making the keratin fibers such as hair less frizzy, and/or for improving the combing of the keratin fibers such as hair.

In one embodiment, the composition of the present invention may be in the form of an emulsion. Emulsions may be in the form of an oil-in-water emulsion (O/W type emulsion) or a water-in-oil emulsion (W/O type emulsion).

In this embodiment, the oily phase of the emulsion may comprise the aminosilicone compound, and the aqueous phase of the emulsion may comprise the poly(carbodiimide) compound. The oily phase of the emulsion may comprise the oil mentioned above. The oily phase and the aqueous phase of the emulsion may further comprise one or more additives such as the additives mentioned above.

In another embodiment, two distinct phases may exist in the composition.

Accordingly, another aspect of the present invention relates to a composition comprising:

(1) a first phase; and

(2) a second phase,

wherein

the first phase comprises the aminosilicone compound; and

the second phase comprises the poly(carbodiimide) compound,

and wherein the first phase and the second phase are separated.

It is preferable that each of the first and second phases be a continuous phase. When the first phase and the second phase are separated, they are visually and macroscopically distinct. In other words, the composition may have two distinct layers, each layer consisting of either the first phase or the second phase.

The first phase may comprise one or more additives in addition to the aminosilicone compound. Preferably, the first phase may comprise one or more oils. Therefore, the first phase may correspond to an oily phase.

The second phase may comprise one or more additives in addition to the poly(carbodiimide) compound. Preferably, the second phase may comprise water. Therefore, the second phase may correspond to an aqueous phase.

The additives and oils which can be contained in the first phase and/or the second phase include the additives and oils mentioned above. [Kit]

The present invention also relates to a kit comprising:

(1) a first compartment comprising a first composition; and

(2) a second compartment comprising a second composition,

wherein the first composition comprises at least one aminosilicone compound, and

the second composition comprises at least one poly(carbodiimide) compound, and

the amount of the aminosilicone compound is 3% by weight or more relative to the total weight of the first and second compositions.

The first composition may comprise one or more additives in addition to the aminosilicone compound. Preferably, the first composition may comprise one or more oils.

The amount of the oil(s) in the first composition may range from 60% to 99% by weight, preferably from 70% to 97% by weight, and more preferably from 80% to 95% by weight, relative to the total weight of the first composition.

The second composition may comprise one or more additives in addition to the poly(carbodiimide) compound. Preferably, the second composition may comprise water.

The amount of water in the second composition may range from 70% to 99% by weight, preferably from 80% to 98% by weight, and more preferably from 90% to 97% by weight, relative to the total weight of the second composition. The additives and oils which can be contained in the first composition and/or the second composition include the additives and oils mentioned above.

A person skilled in the art can prepare the kit according to the present invention based on conventional packaging technology. The kit according to the present invention includes the first and second compartments each of which includes, respectively, the first and second compositions separately. The first and second compartments may be equipped with a dispensing or discharging means such as a pump. The first and second compartments may be separately included in two distinct containers. On the other hand, the first and second compartments may be in a single container.

It is possible to use the kit by, for example,

(1) dispensing or discharging the first composition from the first compartment, followed by applying the first composition to keratin fibers in order to treat the keratin fibers,

(2) dispensing or discharging the second composition from the second compartment, followed by applying the second composition to keratin fibers in order to treat the keratin fibers which have already been treated with the first composition.

(3) drying the keratin fibers.

In one embodiment, it is possible to conduct step (1) and then step (2). In another

embodiment, it is possible to conduct step (2) and then step (1).

It is possible to perform, if necessary, a step of rinsing after step (3).

[Process]

The present invention also relates to a process for treating keratin fibers, preferably hair, comprising:

(1) applying the composition comprising at least one aminosilicone compound and at least one poly(carbodiimide) compound to the keratin fibers;

(2) drying the keratin fibers. The amount of the composition that may be applied to the keratin fibers may range from 0.001 g to 1 g of the composition per 1 g of the keratin fibers, preferably from 0.01 g to 0.4 g of the composition per 1 g of the keratin fibers, and more preferably from 0.05 g to 0.1 g of the composition per 1 g of the keratin fibers.

In one embodiment, 0.5 g to 10 g of the composition, preferably 1 g to 8 g of the composition, more preferably 3 g to 5 g of the composition may be applied to half a head of semi-long hair. The present invention also relates to a process for treating keratin fibers, preferably hair, comprising:

(1) separately applying the first composition and the second composition to the keratin fibers; and

(2) drying the keratin fibers,

wherein

the first composition comprises at least one aminosilicone compound, and

the second composition comprises at least one poly(carbodiimide) compound.

The amount of the first composition that may be applied to the keratin fibers may range from 0.001 g to 1 g of the first composition per lg of the keratin fibers, preferably from 0.01 g to 0.25 g of the first composition per 1 g of the keratin fibers, and more preferably from 0.05 g to 0.1 g of the first composition per 1 g of the keratin fibers.

The amount of the second composition that may be applied to the keratin fibers may range from O.OOlg to lg of the second composition per lg of the keratin fibers, preferably from 0.0 lg to 0.25g of the second composition per lg of the keratin fibers, and more preferably from 0.05g to 0.1 g of the second composition per lg of the keratin fibers.

The weight of the first composition to be applied to the keratin fibers may be less than, equal to, or more than the weight of the second composition.

The above treating steps (1) and (2) are performed separately and sequentially. In other words, the above steps (1) and (2) are not performed simultaneously. In one embodiment, it is possible to apply the first composition and then the second composition to the keratin fibers. In another embodiment, it is possible to apply the second composition and then the first composition to the keratin fibers.

As the drying step, any conventional drying technique may be used to dry the keratin fibers. For example, an oven may be used for 20 min at 100°C, a helmet dryer may be used for 40 min at 50°C, a hair dryer may be used for 5 min, or the keratin fibers may be^' kept overnight at room temperature.

It is possible to perform, if necessary, a step of rinsing after drying the keratin fibers.

The above kit and process are preferably for cosmetic purposes for the keratin fibers, for example, for cosmetic treatment of keratin fibers, such as hair, and more particularly, for reducing the volume of hair, for making the keratin fibers such as hair less frizzy, and/or for improving the combing of the keratin fibers such as hair. [Use]

The present invention also relates to a use of a combination of at least one aminosilicone compound and at least one poly(carbodiimide) compound of the present invention, for reducing the volume of hair.

In one embodiment, the use is preferably for cosmetic purposes for the keratin fibers, for example, for making the keratin fibers such as hair less frizzy, and/or for improving the combing of the keratin fibers such as hair.

EXAMPLES

The present invention will be described in a more detailed manner by way of examples.

However, these examples should not be construed as limiting the scope of the present invention.

In all of these examples, the amino propyldimethicone sold under the name KF8015 by the company Shin Etsu, and the poly(carbodiimide) sold under the name Carbodilite V-02-L2 by the company Nisshinbo Chemical, were used as an aminosilicone compound and a poly(carbodiimide) compound, respectively.

One-Liquid Formulation (Example Al and Comparative Examples Al -A3)

[Preparation]

Each of the treatment compositions for hair according to Example Al (Ex. Al) and

Comparative Examples A1-A3 (Comp. Ex. Al to Comp. Ex. A3) was prepared by mixing the ingredients shown in Table 1. The numerical values for the amounts of the ingredients are all based on "% by weight" as active raw materials. The numerical values for the amount of poly(carbodiimide) is shown as % by weight of the active material.

Table 1

Hair Treatments (Example Al and Comparative Examples A1-A3)

The composition selected from Example Al and Comparative Examples A1-A3 was used to treat a regular bleached hair swatch (from IHIP, 27cm long, about 2.7 g in weight) as follows. 1. The swatch was wetted and dried with a towel. 2. 0.2 g of the composition was applied to the swatch.

3. The swatch was completely dried by any one of the following drying methods:

(1 ) using an oven for 20 min at 100°C

(2) using a helmet dryer for 40 min at 50°C

(3) using a hair dryer for 5 min

(4) keeping the swatch overnight at room temperature

4. The composition was rinsed off from the swatch using shampoo 2 times.

5. . The swatch was dried by a dryer. [Evaluation]

After the swatch was washed by shampoo (Sodium laureth sulfate / Cocobetaine = 12.5 / 2.5) 7 times and after the swatch was dried, "Volume Reduction", "Anti-Frizz" and "Combing" were evaluated by sensory evaluation, relative to the benchmark (the swatch treated without any active component, Comparative Example Al) based on the following criteria. The results are shown in Table 2.

(Volume Reduction) 7: Significantly better

6: Clearly better

5: Much better

4: Better

3 : Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark

(Anti-Frizz)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3: Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark (Combing)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3 : Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark Table 2

As shown in Table 2, the swatch treated with a specific combination of aminosilicone compound and poly(carbodiimide) compound (Ex. Al) can provide advantageous hair cosmetic effects of less volume, less frizzing, and better combing, as compared to the swatch treated without any active component (Comp. Ex. Al) or the swatch treated with either poly(carbodiimide) compound (Comp. Ex. A2) or aminosilicone compound (Comp. Ex. A3) only.

Two-Liquid Formulation (Ex. Bl-1 + Ex. Bl-2 and Comp. Ex. Bl-1 + Comp. Ex. Bl-2)

[Preparation]

Each of the combinations of treatment formulae for hair consists of two separate

compositions; Example Bl-1 (Ex. Bl-1) or Comparative Example Bl-1 (Comp. Ex. Bl-1) as a first composition, and Example Bl-2 (Ex. Bl-2) or Comparative Example Bl-2 (Comp. Ex. Bl-2) as a second composition. Each of the first composition and the second composition was prepared by separately mixing the ingredients shown in Table 3. The numerical values for the amounts of the ingredients are all based on "% by weight" as active raw materials.

Table 3

Hair Treatments (Ex. Bl-1 + Ex. Bl-2 and Comp. Ex. Bl-1 + Comp. Ex. Bl-2)

The combination of first and second compositions selected from Ex. Bl-1 + Ex. Bl-2 and Comp. Ex. Bl-1 + Comp. Ex. Bl-2 was used to treat a regular bleached hair swatch (from IHIP, 27 cm long, about 2.7 g in weight) as follows.

1. The swatch was wetted and dried with a towel.

2. 0.2 g of the first composition was applied to the swatch.

3. 0.2 g of the second composition was applied to the swatch.

4. The swatch was completely dried by any one of the following drying method: (1) using an oven for 20 min at 100 °C

(2) using a helmet dryer for 40 min at 50 °C

(3) using a hair dryer for 5 min

(4) keeping the swatch overnight at room temperature

5. The composition was rinsed of from the swatch using shampoo 2 times.

6. The swatch was dried by dryer.

[Evaluation] After the swatch was washed by shampoo (Sodium laureth sulfate / Cocobetaine = 12.5 / 2.5) 7 times and after the swatch was dried, "Volume Reduction", "Anti-Frizz" and "Combing" were evaluated by sensory evaluation, relative to the benchmark (the swatch treated without any active component, Comparative Example Al) based on the following criteria. The results are shown in Table 4.

(Volume Reduction)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3 : Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark

(Anti-Frizz)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3: Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark

(Combing) 7: Significantly better

6: Clearly better

5: Much better

4: Better

3 : Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark Table 4

As shown in Table 4, the swatch treated with a specific combination of aminosilicone compound and poly(carbodiimide) compound (Ex. B 1 - 1 + Ex. B 1 -2) in a two-liquid formulation can provide advantageous hair cosmetic effects of less volume, less frizzing, and better combing, as compared to the swatch treated with either aminosilicone compound only(Comp. Ex. Bl-1 + Comp. Ex. Bl-2). One-Liquid Formulation in Different Formulae (Examples CI and C2 and Comparative Example CI)

[Preparation] Each of the treatment compositions for hair according to Examples CI and C2 (Ex. CI and Ex. C2) and Comparative Example CI (Comp. Ex. CI) was prepared by mixing the ingredients shown in Table 5. The numerical values for the amounts of the ingredients are all based on "% by weight" as active raw materials.

Table 5

Hair Treatments (Examples CI and C2 and Comparative Example CI) The composition selected from Examples CI and C2 and Comparative Example CI was used to treat a regular bleached hair swatch (from IHIP, 27cm long, about 2.7 g in weight) as follows. 1. The swatch was wetted and dried with a towel.

2. 0.2 g of the composition was applied to the swatch.

3. The swatch was completely dried by any one of the following drying methods:

(1) using an oven for 20 min at 100°C

(2) using a helmet dryer for 40 min at 50°C

(3) using a hair dryer for 5 min

(4) keeping the swatch overnight at room temperature

4. The composition was rinsed off from the swatch using shampoo 2 times.

5. The swatch was dried by a dryer.

[Evaluation]

After the swatch was washed twice by a speedmixier for 2 min at 3,500 rpm, using a 2.1% aqueous solution of PEG-6 methyl ether dimethicone, "Volume Reduction", "Anti-Frizz" and "Combing" were evaluated by sensory evaluation, relative to the benchmark (the swatch treated without any active component, Comparative Example Al) based on the following criteria. The results are shown in Table 6.

(Volume Reduction)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3 : Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark

(Anti-Frizz)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3: Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark

(Combing)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3: Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark Table 6

As shown in Table 6, the swatch treated with the combination of aminosilicone compound and poly(carbodiimide) compound (Ex. CI and C2) can provide advantageous hair cosmetic effects of less volume, less frizzing, and better combing, as compared to the swatch treated with an aminosilicone compound only (Comp. Ex. CI). Two-Liquid Formulation (Ex. Bl-1 + Ex. Bl-2, Ex. B2-1 + Ex. B2-2 and Ex. B3-1 + Ex. B3-2, and Comp. Ex. Bl-1 + Comp. Ex. Bl-2)

[Preparation] Each of the combinations of treatment formulae for hair consists of two separate

compositions; Examples Bl-1, B2-1 or B3-1 (Ex. Bl-1, Ex. B2-1 and Ex. B3-1) or

Comparative Example Bl-1 (Comp. Ex. Bl-1) as a first composition, and Examples Bl-2, B2-2 or B3-2 (Ex. Bl-2, Ex. B2-2 and Ex. B3-2) or Comparative Example Bl-2 (Comp. Ex. Bl-2) as a second composition. Each of the first composition and the second composition was prepared by separately mixing the ingredients shown in Table 7. The numerical values for the amounts of the ingredients are all based on "% by weight" as active raw materials.

Table 7

Hair Treatments (Ex. Bl-1 + Ex. Bl-2, Ex. B2-1 + Ex. B2-2 and Ex. B3-1 + Ex. B3-2, and Comp. Ex. Bl-1 + Comp. Ex. Bl-2) The combination of compositions selected from Ex. Bl-1 + Ex. Bl-2, Ex. B2-1 + Ex. B2-2 and Ex. B3-1 + Ex. B3-2 and Comp. Ex. Bl-1 + Comp. Ex. Bl-2 was used to treat a regular bleached hair swatch (from IHIP, 27 cm long, about 2.7 g in weight) as follows.

1. The swatch was wetted and dried with a towel.

2. 0.2 g of the first composition was applied to the swatch.

3. 0.2 g of the second composition was applied to the swatch.

4. The swatch was completely dried by any one of the following drying methods: ( 1 ) using an oven for 20 min at 100°C

(2) using a helmet dryer for 40 min at 50°C

(3) using a hair dryer for 5 min

(4) keeping the swatch overnight at room temperature

5. The composition was rinsed off from the swatch using shampoo 2 times.

6. The swatch was dried by a dryer.

[Sensory Evaluation] After the swatch was washed by shampoo 14 times and after the swatch was dried, "Volume Reduction", "Anti-Frizz" and "Combing" were evaluated by sensory evaluation, relative to the benchmark (the swatch treated without any active component, Comparative Example Al) based on the following criteria. The results are shown in Table 7. (Volume Reduction)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3: Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark

(Anti-Frizz)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3 : Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark

(Combing)

7: Significantly better

6: Clearly better

5: Much better

4: Better

3: Marginally better

2: Nominally better

1 : Same as benchmark

0: Worse than benchmark Table 8

As shown in Table 8, the swatch treated with a specific combination of aminosilicone compound and poly(carbodiimide) compound (Ex. Bl-1 + Ex. Bl-2, Ex. B2-1 + Ex. B2-2 and Ex. B3-1 + Ex. B3-2) can provide advantageous hair cosmetic effects of less volume, less frizzing, and better combing, as compared to the swatch treated with aminosilicone compound only (Comp. Ex. B 1 - 1 + Comp. Ex. Bl-2). [Instrumental Evaluations]

The hair swatches were treated with the combination of compositions selected from Ex. Bl-1 + Ex. Bl-2 and Ex. B2-1 + Ex. B2-2 and Comp. Ex. Bl-1 + Comp. Ex. Bl-2. After the swatches were washed by shampoo 14 times and dried, the swatches were also evaluated instrumentally by taking photo and using software as follows, in comparison with the measurement before treatment. The results are shown in Table 9.

1. The swatches were photographed after being hung in front of a white background (backlight). In order to limit the influence of the three dimensional volume of the swatches, 9 images were taken with a regular rotation of the swatch of 40 degrees.

2. Using tailored image analysis software, the images were converted into gray-scale and the pixels were counted to measure the total volume, frizz, and area of the swatches. The values measured in the 9 pictures were averaged.

3. Body reduction, frizz reduction and area reduction were calculated according to the following equations. For each composition, 3 swatches were used.

(Body Reduction)

Reduction of Volume after treatment (%) = [(Volume before Treatment - Volume after Treatment) / Volume before Treatment]* 100

(Frizz Reduction)

Reduction of Frizz after Treatment (%) = [(Frizz before Treatment - Frizz after Treatment) / Frizz before Treatment] * 100

(Area Reduction)

Reduction of Area after Treatment (%) = [(Area before Treatment - Area after Treatment) / Area before Treatment]* 100 Table 9

As shown in Table 9, the combination of aminosilicone compound and poly(carbodiimide) compound (Ex. Bl-1 + Ex. Bl-2 and Ex. B2-1 + Ex. B2-2) could significantly reduce the body, frizz, and area of the swatch after treatment, as compared to the swatch treated with aminosilicone compound only (Comp. Ex. Bl-1 + Comp. Ex. Bl-2).

In-vivo Hair Treatments (Ex. Bl-1 + Ex. Bl-2 and Comp. Ex. Bl-1 + Comp. Ex. Bl-2) (Evaluations by Professional Stylists)

The treatment formulae for hair according to Ex. Bl-1 + Ex. Bl-2 and Comp. Ex. Bl-1 + Comp. Ex. Bl-2 were used to treat hair of panelists by salon stylists as follows.

1. The panelist's hair was shampooed using 4 g of shampoo for half a head of semi-long hair.

2. The hair was dried with a towel.

3. 4 g of the first composition Ex. Bl-1 and 4 g of the second composition Ex. Bl-2 were applied to one half of a head of semi-long hair.

4. 4 g of the first composition Comp. Ex. Bl-1 and 4 g of the second composition

Comp. Ex. Bl-2 were applied to the other half of the head of semi-long hair.

5. The hair was dried by blowing with a dryer for 10 to 15 minutes, until the hair

became completely dried.

6. The hair was shampooed twice. After shampooing, "Wet Combing" and "Wet

Coating" were evaluated.

7. The hair was dried by a dryer. After drying the hair, "Alignment (Anti-Frizz)", "Moisture Feeling", "Smoothness on Dry Hair", "Ease of Finger Combing",

"Softness on Dry Hair" and "Evenness of Coating" were evaluated. [In-vivo Evaluations by Stylists]

(At the time of treatment)

After the hair was treated and shampooed, "Wet Combing" and "Wet Coating" were evaluated, and after the subsequent drying of the hair by dryer, "Alignment (Anti-Frizz)", "Moisture Feeling", "Smoothness on Dry Hair", "Ease of Finger Combing", "Softness on Dry Hair" and "Evenness of Coating" of the hair on the half of the head treated with the combination Ex. Bl-1 + Ex. Bl-2 were evaluated by salon stylists relative to the benchmark (the hair on the other half of the head treated with the combination of Comp. Ex. Bl-1 + Comp. Ex. Bl-2), according to the following criteria. The hair of 6 panelists was evaluated.

4: Significantly more

3 : Clearly more

2: More

1 : Nominally more 0: Same as benchmark

-1 : Nominally less

-2: Less

-3 : Clearly less

-4: Significantly less

(1 week/1 month after treatment)

After the treatment, the panelists used shampoo and conditioner as daily routine. After 1 week / 1 month of the treatment, the lasting effect was evaluated by the stylists according to the same criteria, as follows.

The panelist's hair was shampooed once using 4 g per half head of semi-long hair of shampoo. After shampooing, "Wet Combing" and "Wet Coating" were evaluated. The hair was dried by a dryer. After drying the hair, "Alignment (Anti-Frizz)", "Moisture Feeling", "Smoothness on Dry Hair", "Ease of Finger Combing",

"Softness on Dry Hair" and "Evenness of Coating" were evaluated.

The hair of 6 panelists was evaluated 1 week after the treatment, and the hair of 3 panelists was evaluated 1 month after the treatment.

The results of the evaluations at the time of treatment, 1 week after the treatment and 1 month after the treatment are shown in Table 10.

Table 10

As shown in Table 10, the effects demonstrating improved manageability obtained by the combination Ex. Bl-1 + Ex. Bl-2 comprising both aminosilicone compound and poly(carbodiimide) compound were perceived by the professional stylists at least 1 month after treatment.

In-vivo Hair Treatments (Ex. Bl-1 + Ex. Bl-2) (Evaluations by Consumers)

The combination of the treatment formulae for hair of the invention, Ex. Bl-1 + Ex. Bl-2, was used to treat hair of two groups of consumers as follows.

Consumers of Group 1 used shampooing, conditioning, treatment and styling as a daily routine after the treatment using the combination of the invention Ex. Bl-1 + Ex. Bl-2. Consumers of Group 2 used only shampooing and did not use conditioning, treatment, or styling after the treatment using the combination of the invention Ex. Bl-1 + Ex. Bl-2.

Each group included 10 consumers.

1. The consumer's hair was shampooed using 4 g per half head of semi-long hair of shampoo.

2. The hair was dried with a towel.

3. 4 g per half head of semi-long hair of the first composition Ex. Bl-1 was applied to the hair.

4. 4 g per half head of semi -long hair of the second composition Ex. Bl-2 was applied to the hair.

became completely dried.

6. The hair was shampooed twice.

7. The hair was dried by a dryer.^'

[In-vivo Evaluations by Consumers]

One week and two weeks after the treatment, consumers were interviewed.

One week after the treatment, the consumers of both Group 1 and Group 2 very strongly perceived good ability to run the fingers through the hair, good feeling of hair to the touch such as softness and smoothness, manageability, that is, no expanding, less unruliness and more easiness for styling of the hair, and shine. They also somewhat strongly perceived the easiness for shampooing including good lathering, no tangling/squeakiness, and feeling of softness, and also long-lastingness of softness, ability to run the fingers through the hair, and hair manageability.

Two weeks after the treatment, the consumers of both Group 1 and Group 2 very strongly perceived good feeling of hair to the touch such as softness and good ability to run fingers through the hair. They also somewhat strongly perceived easiness for shampooing including good lathering, no tangling/squeakiness, and feeling of softness, and also long-lastingness of softness and ability to run the fingers through the hair, and shine. In conclusion, the consumers could perceive the visual effects of the treatment for at least one week, and the tactile effects for at least two weeks, regardless of whether or not they used conditioning, treatment and styling as a daily routine.

The consumers also perceived additional benefits of fast lathering and rich amount of foam during shampooing, and no observation of trace of mark left by a hair band after tying up the hair.

Claims

1. A composition comprising:

(1) at least one aminosilicone compound; and

(2) at least one poly(carbodiimide) compound,

wherein

The composition according to Claim 1 , wherein the poly(carbodiimide) compound represented by the following formula:

wherein

X] and X₂ each independently represents O, S or NH;

R] and R₂ each independently represents a hydrocarbon group which may contain one or more heteroatom(s);

n and z are each independently an integer equal to 0 to 20, wherein n+z is at least 2; L_\ independently represents a CI to CI 8 divalent aliphatic hydrocarbon group, a C3 to C13 divalent alicyclic hydrocarbon group, a C3 to CI 2 divalent heterocyclic group, or a C6 to C14 divalent aromatic hydrocarbon group that is not chosen from m-tetramethylxylylene;

E independently represents a group selected from:

-0-R₃-0-; -S-R4-S-;

-R₅-N(R₆)-R4-N(R₆)-R₅-;

wherein

R₆ independently represents a hydrogen atom or a hydrocarbon group, wherein the hydrocarbon group may include one or more heteroatom(s).

3. The composition according to Claim 1, wherein the poly(carbodiimide) compound is a co-polymer derived from alpha-methylstyryl-isocyanates, the co-polymer being represented by the following formula:

N=C=N— R

wherein

n is an integer equal to 2 to 100.

The composition according to Claim 1 , wherein the poly(carbodiimide) compound is a compound represented by the following structure:

R- -CH₂

CH (CH₂)₃-N: :N- -R

R- :N- -CH₂ wherein R is independently an alkyl group preferably having from 1 to 24 carbon atoms, a cycloalkyl group preferably having from 3 to 24 carbon atoms, or an aryl group preferably having from 6 to 24 carbon atoms.

The composition according to any one of Claims l to 4,^j wherein the amount of the aminosilicone compound is from 3% to 20% by weight, preferably from 5% to 15% by weight, relative to the total weight of the composition.

The composition according to any one of Claims 1 to 5, wherein the amount of the poly(carbodiimide) compound is from 0.01% to 20% by weight, preferably from 0.1% to 10% by weight, more preferably from 1% to 5% by weight, relative to the total weight of the composition.

The composition according to any one of Claims 1 to 6, wherein the weight of the aminosilicone compound is greater than the weight of the poly(carbodiimide) compound.

The composition according to any one of Claims 1 to 7, wherein the composition is intended for treating keratin fibers, preferably hair, and preferably for reducing the volume of hair.

The composition according to any one of Claims 1 to 8, wherein the composition

comprises; (1) a first phase; and

(2) a second phase,

wherein

the first phase comprises the aminosilicone compound; and

the second phase comprises the poly(carbodiimide) compound,

and wherein the first phase and the second phase are separated.

10. A kit comprising:

(1) a first compartment comprising a first composition; and

(2) a second compartment comprising a second composition,

wherein

the first composition comprises at least one aminosilicone compound, and the second composition comprises at least one poly(carbodiimide) compound, and the amount of the aminosilicone compound is 3% by weight or more relative to the total weight of the first and second compositions.

11. The kit according to claim 10, wherein the kit is intended for treating keratin fibers, preferably hair, preferably for reducing the volume of hair. 12. A process for treating keratin fibers, preferably hair, comprising:

(1) applying the composition according to any one of Claims 1 to 9 to the keratin fibers;

(2) drying the keratin fibers. 13. A process for treating keratin fibers, preferably hair, comprising:

(2) drying the keratin fibers,

wherein

the first composition comprises at least one aminosilicone compound, and the second composition comprises at least one poly(carbodiimide) compound.

14. The process according to Claim 12 or 13, wherein the process is intended for

reducing the volume of hair.

15. Use of a combination of at least one aminosilicone compound and at least one

poly(carbodiimide) compound, for reducing the volume of hair.