Alkyl silicone polyester resins
View Patent ↗The present invention relates to a series of novel silicone polyesters which are prepared by crosslinking an alkyl dimethicone copolyol with a dimer acid. The reaction of the alkyl dimethicone copolyol and dimer acid results in a polyester having affinity to oils and that is highly lubricious on hair, skin and textile fiber.
1. A polyester made by esterification reaction consisting of reacting:
(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 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 y is 0.
7. A polyester of claim 1 wherein a ranges from 10 to 50, x ranges from 8 to 10 and y is 0.
8. 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 esterification reaction consisting of reacting:
(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 alkyl 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) z OH;
R 2 is —(CH 2 ) d —CH 3 ;
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.
9. A process of claim 8 wherein said effective conditioning concentration ranges between 0.1 and 10% by weight.
10. A process of claim 8 wherein said dimer acid source is dimer acid.
11. A process of claim 8 wherein said dimer acid source is hydrogenated dimer acid.
12. A process of claim 8 wherein a ranges from 10 to 50.
13. A process of claim 9 wherein y is 0.
14. A process of claim 8 wherein a ranges from 10 to 50, x ranges from 8 to 10 and y is 0.