Aryl silicone polyester resins as hair glossers
The present invention relates to a series of novel silicone polyesters which are prepared by crosslinking an aryl dimethicone copolyol with a dimer acid. The reaction of the aryl dimethicone copolyol and dimer acid results in a polyester having affinity to oils and provides outstanding gloss on hair.
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;
R 1 is
—(CH 2 ) 3 —O—(CH 2 CH 2 —O) x —(CH 2 CH(CH 3 )O) y —CH 2 CH 2 O) n OH;
R 2 is
a is an integer ranging from 0 to 200;
b is an integer ranging from 2 to 20;
c is an integer ranging from 1 to 20;
d is an integer ranging from 7 to 31;
x, y and z are independently integers ranging from 0 to 20.
2 . A polyester of claim 1 wherein said esterification reaction is conducted at a temperature of between 120° C. 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 a is an integer ranging from 10 to 50.
6 . A polyester of claim 1 wherein x, y and z each range from 5 to 10 . . . .
7 . A polyester of claim 1 wherein y is 0.
8 . A polyester of claim 1 wherein a ranges from 10 to 50, x ranges from 8 to 10 and y is 0.
9 . A process for glossing hair skin and fiber which comprises contacting the hair with an effective glossing 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) an aryl dimethicone copolyol conforming to the following structure:
wherein;
R 1 is
—(CH 2 ) 3 —O—(CH 2 CH 2 —O) n —(CH 2 CH(CH 3 )O) y —CH 2 CH 2 O) n OH;
R 2 is
a is an integer ranging from 0 to 200;
b. is an integer ranging from 2 to 20;
c is an integer ranging from 1 to 20;
d is an integer ranging from 7 to 31;
x, y and z are independently integers ranging from 0 to 20.
10 . A process of claim 9 wherein said effective glossing concentration ranges between 0.1 and 10% by weight.
11 . A process of claim 9 wherein said dimer acid source is dimer acid.
12 . A process of claim 9 wherein said dimer acid source is hydrogenated dimer acid.
13 . A process of claim 9 wherein a ranges from 10 to 50.
14 . A process of claim 9 wherein x, y and z each range from 5 to 10 . . . .
15 . A process of claim 9 wherein y is 0.
16 . A process of claim 9 wherein a ranges from 10 to 50, x ranges from 8 to 10 and y is 0.