Emulsifier including glycerin-modified organopolysiloxanes
View Patent ↗The invention relates to emulsifiers comprising glycerin-modified organopolysiloxanes and to their use for the preparation of extraordinarily stable emulsions and dispersions.
1. An emulsifier comprising at least one glycerin-modified siloxane of general formula (I)
—M 2+f+2g-a-b M′ a M″ b D c D′ d D″ e T f Q g formula (I)
wherein
M=(R 1 3 SiO 1/2 ),
M′=(R 1 2 R 2 SiO 1/2 ),
M″=(R 1 2 R 3 SiO 1/2 ),
D=(R 1 2 SiO 2/2 ),
D′=(R 1 R 2 SiO 2/2 ),
D″=(R 1 R 3 SiO 2/2 ),
T=(R 1 SiO 3/2 ) and
Q=(SiO 4/2 ),
where
R 1 =independently of one another, identical or different, methyl or phenyl,
R 2 =independently of one another, identical or different, linear or branched, optionally aromatic hydrocarbon radicals having 8 to 28 carbon atoms or an undecylic acid methyl ester radical, and
R 3 =—CH 2 CH 2 CH 2 OCH 2 CH(OH)CH 2 OH,
where
a=0 to 2,
b=0 to 2,
c=20 to 300,
d=4 to 130,
e=3 to 75,
f=0 to 10 and
g=0 to 5
with the proviso that
N=2+c+d+e+2f+3g=51 to 350,
y=(a+d)/(b+e)=1.5 to 5.5 and
z=a+b+d+e=greater than 14.
2. The emulsifier according to claim 1 , wherein
2>a+b>0.
3. An emulsifier comprising at least one glycerin-modified siloxane of general formula (I)
—M 2+f+2g-a-b M′ a M″ b D c D′ d D″ e T f Q g formula (I)
wherein:
M=(R 1 3 SiO 1/2 ),
M′=(R 1 2 R 2 SiO 1/2 ),
M″=(R 1 2 R 3 Si O 1/2 ),
D=(R 1 2 SiO 2/2 ),
D′=(R 1 R 2 SiO 2/2 ),
D″=(R 1 R 3 SiO 2/2 ),
T=(R 1 SiO 3/2 ) and
Q=(SiO 4/2 ),
where
R 1 =independently of one another, identical or different, methyl or phenyl,
R 2 =independently of one another, identical or different, linear or branched, optionally aromatic hydrocarbon radicals having 8 to 28 carbon atoms or an undecylic acid methyl ester radical, and
R 3 =—CH 2 CH 2 CH 2 OCH 2 CH(OH)CH 2 OH,
where
a=0 to 2,
b=0 to 2,
c=20 to 300,
d=4 to 130,
e=3 to 75,
f=0 to 10 and
g=0 to 5
with the proviso that
N=2+c+d+e+2f+3g=51 to 350,
y=(a+d)/(b+e)=1 to 6.5 and
z=a+b+d+e=greater than 10, and wherein the at least one glycerin-modified siloxanes of formula (I) further comprises siloxane units of general formula (II)
[D′″-R 4 —D′″] formula (II)
wherein
D′″=(R 1 SiO 2/2 ),
where
R 4 =—CH 2 CHR 1 —R 5 —CHR 1 CH 2 — or —CH═CR 1 —R 5 —CR 1 ═CH— and
R 5 =a linear or branched alkylene radical which optionally has ether, alcohol, ester, amine or siloxane groups, or a radical of the general formula —(Si(CH 3 ) 2 O) h —Si(CH 3 ) 2 — where h=1-400.
4. The emulsifier according to claim 1 , wherein the at least one glycerin-modified siloxane includes a mixture of glycerin-modified siloxanes of formula (I) with different siloxane chain lengths.
5. A method of making a composition comprising providing at least one emulsifier according to claim 1 and adding at least one other ingredient to said at least one emulsifier.
6. The method of claim 5 wherein the at least one other ingredient includes an inorganic pigment or a cosmetic particle.
7. The method of claim 5 wherein the at least one other ingredient is a dispersed solid.
8. A water-in-oil or water-in-silicone emulsion or dispersion comprising at least one emulsifier according to claim 1 .
9. A cosmetic, dermatological or pharmaceutical formulation comprising at least one emulsifier according to claim 1 .
10. The formulation according to claim 9 , wherein the formulation is essentially free from polyethers and compounds containing polyethers.
11. The formulation according to claim 9 , further comprising a pigment.
12. A care and cleaning composition comprising at least one emulsifier according to claim 1 .
13. The emulsifier according to claim 1 , wherein R 1 is methyl, R 2 is n-C 12 H 25 , f=0, g=0, a+b=0, N=100, a+d=18, b+e=7, z=25 and y=2.6.