Polyglycerol silicone polymers in personal care
The present invention relates to a series of novel silicone polyesters that are prepared by crosslinking an dimethicone copolyol, polyglycerol dimer acid. The nature of the silicone group, the water loving polyglycerol group as well as the fact that a C-36 fatty diacid is used in preparation of the products results in unique products.
1 . A polyester made by esterification reaction of:
(a) a dimer acid source selected from
dimer acid conforming to the following structure:
or hydrogenated dimer acid conforming to the following structure:
or mixtures thereof;
with
(b) a dimethicone copolyol conforming to the following structure:
wherein:
a is an integer ranking from 0 to 100;
b is an integer ranging from 4 to 20, with the proviso that b is greater than or equal to a times 0.75);
x is an integer ranging from 6 to 20; and
(c) a cationic silicone compound conforming to the following structure;
wherein:
l is an integer ranking from 0 to 100;
m is an integer ranging from 4 to 20, with the proviso that b is greater than or equal to a times 0.75);
n is an integer ranging from 1 to 20;
x is an integer ranging from 6 to 20;
R is alkyl having 8 to 18 carbon atoms;
with the proviso that the ratio of total hydroxyl groups to acid groups in the reactants be between 0.7 and 1.4.
2 . A polyester of claim 1 wherein said esterification reaction is conducted at a temperature of between 120 and 200° C. for five to 10 hours.
3 . A polyester of claim 1 wherein said dimer acid source is dimer acid.
4 . A polyester of claim 1 wherein said dimer acid source is
hydrogenated dimer acid.
5 . A polyester of claim 1 wherein x is 10-15.
6 . A polyester of claim 1 wherein x is 8-12.
7 . A polyester of claim 1 wherein a is 0 to 20.
8 . A polyester of claim 1 wherein a is 0.
9 . A polyester of claim 1 wherein the ratio of hydroxyl to acid is 1:1.
10 . A polyester of claim 1 wherein the ratio of hydroxyl to acid is 1:1.4.
11 . A process for conditioning hair skin and fiber which comprises contacting the hair skin of fiber with an effective conditioning concentration of a polyester made by the reaction of:
(a) a dimer acid source selected from
dimer acid conforming to the following structure:
or hydrogenated dimer acid conforming to the following structure:
or mixtures thereof;
with
(b) a dimethicone copolyol conforming to the following structure:
wherein:
a is an integer ranking from 0 to 100;
b is an integer ranging from 4 to 20, with the proviso that b is greater than or equal to a times 0.75);
x is an integer ranging from 6 to 20; and
(c) a cationic silicone compound conforming to the following structure;
wherein:
l is an integer ranking from 0 to 100;
m is an integer ranging from 4 to 20, with the proviso that b is greater than or equal to a times 0.75);
n is an integer ranging from 1 to 20;
x is an integer ranging from 6 to 20;
R is alkyl having 8 to 18 carbon atoms;
with the proviso that the total ratio of hydroxyl groups to acid group in the reactants be between 0.7 and 1.4.
12 . A process of claim 11 wherein said effective conditioning concentration ranges between 0.1 and 10% by weight.
13 . A process of claim 11 wherein said dimer acid source is dimer acid.
14 . A process of claim 11 wherein said dimer acid source is hydrogenated dimer acid.
15 . A process of claim 11 wherein x is 10-15.
16 . A process of claim 11 wherein x is 8-12.
17 . A process of claim 11 wherein a is 0 to 20.
18 . A process of claim 11 wherein the ratio of hydroxyl groups to acid groups is 1:1.
19 . A process of claim 11 wherein the ratio of hydroxyl groups to acid groups is 1:1.4.