Cosmetic containing liquid organopolysiloxane
View Patent ↗The present invention provides a cosmetic exhibiting superior feeling to the touch and a superior uniformity using a novel organopolysiloxane. The cosmetic contains a liquid organopolysiloxane having fluidity at 25° C. and having a crosslinked three-dimensional network structure. The aforementioned liquid organopolysiloxane has a loss factor, tan δ, at a shear frequency of 10 Hz, which is 1 or more.
1. A cosmetic comprising a liquid organopolysiloxane having fluidity at 25° C. and having a crosslinked three-dimensional network structure represented by the following average composition formula (1):
M a D b D Link c T d T Link e Q f (1)
wherein
M represents an R 3 SiO 1/2 unit;
D represents an R 2 SiO 2/2 unit;
T represents an RSiO 3/2 unit;
Q represents a SiO 4/2 unit;
D Link represents an RASiO 2/2 unit;
T Link represents an ASiO 3/2 unit;
R represents a substituted or non-substituted, and linear or branched monovalent hydrocarbon group having 1 to 30 carbon atoms; and
A is a divalent linking group having a group represented by the following formula (2), (4) or (5):
—(CH 2 ) n —SiR″ 2 O—(SiR″ 2 O) p —SiR″ 2 —(CH 2 ) n — (2)
—C v H 2v — (4)
—SiR″ 2 O—(SiR″ 2 O) p —SiR″ 2 — (5)
wherein each R″ independently represents a substituted or non-substituted, and linear or branched monovalent hydrocarbon group having 1 to 30 carbon atoms, and having no aliphatic unsaturated group; n is an integer ranging from 2 to 20; p is an integer ranging from 0 to 500; and v is an integer ranging from 2 to 20,
and wherein a≧0, b≧0, c≧0, d≧0, e≧0, and f≧0, with the proviso that a+b+c+d+e+f=1, and c+e ranges from 0.001 to 0.6.
2. The cosmetic according to claim 1 , wherein said liquid organopolysiloxane has a loss factor, tan 6, at a shear frequency of 10 Hz, which is 1 or more.
3. The cosmetic according to claim 1 , wherein said liquid organopolysiloxane is obtained by at least reacting
(a) at least one organopolysiloxane and/or at least one unsaturated aliphatic hydrocarbon, having more than one unsaturated bond on average per molecule,
(b) at least one organohydrogenpolysiloxane having more than one silicon atom-binding hydrogen atom on average per molecule, and
(c) a catalyst for a hydrosilylation reaction.
4. A cosmetic comprising a liquid organopolysiloxane having a crosslinked three-dimensional network structure, represented by the following average composition formula (1):
M a D b D Link c T d T Link e Q f (1)
wherein
M represents an R 3 SiO 1/2 unit;
D represents an R 2 SiO 2/2 unit;
T represents an RSiO 3/2 unit;
Q represents a SiO 4/2 unit;
D Link represents an RASiO 2/2 unit;
T Link represents an ASiO 3/2 unit;
R represents a substituted or non-substituted, and linear or branched monovalent hydrocarbon group having 1 to 30 carbon atoms; and
A is a divalent linking group having a group represented by the following formula (2), (4) or (5):
—(CH 2 ) n —SiR″ 2 O—(SiR″ 2 O) p —SiR″ 2 —(CH 2 ) n — (2)
—C v H 2v — (4)
—SiR″ 2 O—(SiR″ 2 O) p —SiR″ 2 — (5)
wherein each R″ independently represents a substituted or non-substituted, and linear or branched monovalent hydrocarbon group having 1 to 30 carbon atoms, and having no aliphatic unsaturated group; n is an integer ranging from 2 to 20; p is an integer ranging from 0 to 500; and v is an integer ranging from 2 to 20,
and wherein a≧0, b≧0, c≧0, d≧0, e≧0, and f≧0, with the proviso that a+b+c+d+e+f=1, and c+e ranges from 0.001 to 0.6.
5. The cosmetic according to claim 1 , further comprising, in addition to said (A) liquid organopolysiloxane, (B) at least one oil agent which is liquid at 25° C.
6. The cosmetic according to claim 5 , comprising a uniform oil phase, and/or substantially comprising no gel particles in said oil phase.
7. The cosmetic according to claim 5 , wherein said (B) oil agent has compatibility with said (A) liquid organopolysiloxane.
8. The cosmetic according to claim 5 , wherein said (B) oil agent is a silicone oil.
9. The cosmetic according to claim 5 , further comprising (C) at least one oil agent other than said (B) oil agent.
10. The cosmetic according to claim 1 , further comprising (D) at least one surfactant.
11. The cosmetic according to claim 1 , further comprising (E) at least one alcohol.
12. The cosmetic according to claim 1 , further comprising (F1) at least one thickening agent and/or (F2) at least one gelling agent.
13. The cosmetic according to claim 1 , further comprising (G1) at least one powder and/or (G2) at least one coloring agent.
14. The cosmetic according to claim 1 , further comprising (H) at least one UV-protective component.
15. The cosmetic according to claim 1 , further comprising (I) water.
16. A skin care product, a hair product, an antiperspirant product, a deodorant product, a makeup product, or a UV-protective product, which comprises the cosmetic as recited in claim 1 .
17. The cosmetic according to claim 2 , wherein said liquid organopolysiloxane is obtained by at least reacting
(a) at least one organopolysiloxane and/or at least one unsaturated aliphatic hydrocarbon, having more than one unsaturated bond on average per molecule,
(b) at least one organohydrogenpolysiloxane having more than one silicon atom-binding hydrogen atom on average per molecule, and
(c) a catalyst for a hydrosilylation reaction.
18. The cosmetic according to claim 4 , further comprising, in addition to said (A) liquid organopolysiloxane, (B) at least one oil agent which is liquid at 25° C.
19. The cosmetic according to claim 18 , comprising a uniform oil phase, and/or substantially comprising no gel particles in said oil phase.