Water-in-oil emulsifier derived from natural sources
Polyglycerol esters of natural oils fatty acids, which can be from a large variety of sources, e.g., olives, and of castor seed, which can be, e.g., polyricinoleic acid, which have water-in-oil emulsifier properties, processes of preparing the above compounds having water-in-oil emulsifier properties and the use of these polyglycerol esters as water-in-oil emulsifiers and/or dispersing agents for cosmetic, skin care and pharmaceutical formulations.
1 . A composition containing compounds of formula (II)
wherein
n is 2 to 10,
R is, each independently,
H,
X, which is a polyacid,
Y, which is a natural oil fatty acid whose main component is oleic acid or a synthetic equivalent thereof, or
Z, which is a polyacid X that has attached thereto a group Y forming X-Y,
wherein
at least one R is X and at least one R is Y, or
at least one R is Y and at least one R is Z or
at least one R is Y and at least one R is X and at least one R is Z.
2 . A composition containing compounds of formula (I)
wherein
n is 2 to 10,
R is, each independently,
H,
X, which is
Y, which is a natural oil fatty acid whose main component is oleic acid
or
Z, which is
m is 1 to 5, and
* is the point of attachment
wherein
at least one R is X and at least one R is Y, or
at least one R is Y and at least one R is Z,
at least one R is Y and at least one R is X and at least one R is Z.
3 . The composition according to claim 2 , which is polyglyceryl-4 copolymer of Olive oil fatty acids and Polyacids from castor oil.
4 . The composition according to claim 1 , wherein n is 2 or 3.
5 . The composition according to claim 2 , wherein m is 1 or 2 or 1.5.
6 . The composition according to claim 2 , wherein at least 30% of R groups is X and Y groups.
7 . The composition according to claim 2 , wherein the number of Y groups are the same or higher than the number of X groups.
8 . The composition according to claim 2 , wherein at least 30% of R groups is Y and Z groups.
9 . The composition according to claim 2 , wherein the number of Z groups are the same or higher than the number of Y groups on the polyglycerine.
10 . The composition according to claim 2 , wherein at least 30% of R groups are X, Y and/or Z groups.
11 . The composition according to claim 2 , wherein 40% to 60% of R groups are X, Y and/or Z groups.
12 . A method for preparing the composition containing compounds of formula (I) according to claim 2 , comprising reacting in one pot the following compounds
and
a natural oil fatty acid whose main component is oleic acid or a synthetic equivalent thereof
wherein n and m are defined as for the compound of formula (I).
13 . A method for preparing the composition containing compounds of formula (I) according to claim 2 , comprising reacting
with only one of the following compounds a) or b) in a first reaction step
or
b)
a natural oil fatty acid whose main component is oleic acid or a synthetic equivalent thereof
wherein n and m are defined as for the compound of formula (I) followed by reacting with the other of the above compounds a) or b) that was not reacted in a second reaction step.
14 . A method for preparing the composition containing compounds of formula (I) according to claim 2 , comprising reacting in a first reaction step
with
a natural oil fatty acid whose main component is oleic acid or a synthetic equivalent thereof
followed by reacting the resultant product of the first reaction step with
in a second reaction step,
wherein n and m are defined as for the compound of formula (I).
15 . A water in oil emulsion, comprising the composition according to claim 2 as the emulsifier.
16 . A method for preparing an emulsion, comprising bringing together an effective amount of the composition according to claim 2 with water and oil to form a water in oil formulation.
17 . A personal care, topical or pharmaceutical composition or preparation, comprising a composition according to claim 2 and one or more carriers or auxiliaries which are acceptable in a personal care, topical or pharmaceutical composition or preparation.
18 . An industrial preparation, comprising a composition according to claim 2 .
19 . A personal care composition, comprising 1 to 3% of the composition according to claim 2 and one or more carriers or auxiliaries which are acceptable in a personal care compositions.
20 . A water in oil emulsion, comprising the composition according to claim 1 as the emulsifier.