Shea butter polyoxyalkylene glycol esters
Novel polyoxyalkylene glycol esters prepared by the reaction of a polyoxyethylene glycol (PEG) or polyoxypropylene glycol (PPG) or mixtures thereof with shea butter, preferably mild-processed shea butter (MPSB) under specific mild-processing conditions. These materials are useful as cosmetic and personal care ingredients, allowing for the delivery of highly desirable active ingredients present in shea butter, including natural antioxidants, in a water-soluble form that is substantive to the skin and hair.
1 . A shea butter polyoxyalkylene glycol ester conforming to the structure:
R—C(O)—(OCH 2 CH 2 ) a —(CH 2 CH(CH 3 )O) b —(CH 2 CH 2 O) c —(O)C—R
wherein
(i) R is derived from shea butter and comprises;
from about 0.1 to about 2.0% by weight C 11 H 23 ;
from about 0.5 to about 2.0% by weight C 13 H 27 ;
from about 2.0 to about 6.0% by weight C 15 H 31 ;
from about 25 to about 50% by weight C 17 H 35 ;
from about 40.0 to about 60.0% by weight C 17 H 33 ; and
(ii) a, b and c are independently integers ranging from 1 to 20.
2 . A shea butter polyoxyalkylene glycol ester of claim 1 wherein a is 1, b is 0 and c is 0.
3 . A shea butter polyoxyalkylene glycol ester of claim 1 wherein a is 10, b is 0 and c is 0.
4 . A shea butter polyoxyalkylene glycol ester of claim 1 wherein a is 0, b is 10 and c is 0.
5 . A shea butter polyoxyalkylene glycol ester of claim 1 wherein a is 5, b is 1 and c is 5.
6 . A shea butter polyoxyalkylene glycol ester of claim 1 wherein a is 5, b is 10 and c is 10.
7 . A shea butter polyoxyalkylene glycol ester of claim 1 wherein a is 20, b is 20 and c is 20.
8 . A process for delivering antioxidants to the skin and hair by applying thereto a finished topical product comprising an effective concentration of a shea butter polyoxyalkylene glycol ester that is made by an esterification reaction and conforms to the structure:
R—C(O)—(OCH 2 CH 2 ) a —(CH 2 CH(CH 3 )O) b —(CH 2 CH 2 O) c —(O)C—R
wherein
(i) R is derived from shea butter and comprises;
from about 0.1 to about 2.0% by weight C 11 H 23 ;
from about 0.5 to about 2.0% by weight C 13 H 27 ;
from about 2.0 to about 6.0% by weight C 15 H 31 ;
from about 25 to about 50% by weight C 17 H 35 ;
from about 40.0 to about 60.0% by weight C 17 H 33 ; and
(ii) a, b and c are independently integers ranging from 1 to 20.
9 . A process of claim 8 wherein a is 1, b is 0 and c is 0.
10 . A process of claim 8 wherein a is 10, b is 0 and c is 0.
11 . A process of claim 8 wherein a is 0, b is 10 and c is 0.
12 . A process of claim 8 wherein a is 5, b is 1 and c is 5.
13 . A process of claim 8 wherein a is 5, b is 10 and c is 10.
14 . A process of claim 8 wherein a is 20, b is 20 and c is 20.
15 . A shea butter polyoxyalkylene glycol ester of claim 1 where the shea butter is mild-processed.
16 . A process of claim 8 where the shea butter is mild-processed.