Structured non-aqueous gel-form carrier composition
Disclosed are non-aqueous carrier compositions capable of forming a gel structure, having a low molecular mass N-acyl glutamic acid diamide having a straight-chain alkyl group, a low molecular mass N-acyl glutamic acid diamide having a branched-chain alkyl group, at least one gel-promoting solvent, and at least one high molecular mass block copolymer having at least one hard segment and at least one soft segment, and at least one solvent capable of solubilizing the at least one hard segment and/or the at least one soft segment of the block copolymer, at least one oil-soluble polar modified polymer; and at least one solvent capable of solubilizing the at least one oil-soluble polar modified polymer, and optionally at least one active ingredient, wherein the composition has a hardness value ranging from about 30 to about 300 gf, a melting point of about 50° C. or higher, and does not require use of wax as a structuring agent. Methods of making and using the compositions are also disclosed.
1. A non-aqueous carrier composition capable of forming a gel structure comprising:
a) a structuring agent consisting of a′) N-acyl glutamic acid diamide having a straight-chain alkyl group comprising dibutyl lauroyl glutamide, and an
a″) N-acyl glutamic acid diamide having a branched-chain alkyl group comprising dibutyl ethylhexanoyl glutamide;
b) at least one gel-promoting solvent, wherein said gel-promoting solvent is capable of dissolving said dibutyl ethylhexanoyl glutamide and said dibutyl lauroyl glutamide at a temperature of from about 90° C. to about 125° C.;
c) at least one block copolymer having at least one hard segment and at least one soft segment; and
d) at least one solvent capable of solubilizing the at least one hard segment and/or the at least one soft segment of the block copolymer; and optionally
e) at least one active ingredient, wherein the composition has a hardness value ranging from about 30 to about 300 gf, and a melting point of about 50° C. or higher, and wherein the composition is free of antiperspirant agent.
2. The composition of claim 1 wherein (a′) is present in an amount of from about 0.1 to about 10% by weight, based on the total weight of the composition.
3. The composition of claim 1 wherein (a″) is present in an amount of from about 0.1 to about 10% by weight, based on the total weight of the composition.
4. The composition of claim 1 wherein (b) is chosen from a C2-C5 glycol, an isostearyl alcohol and mixtures thereof.
5. The composition of claim 1 wherein (b) is present in an amount of from about 3 to about 50% by weight, based on the total weight of the composition.
6. The composition of claim 1 wherein (c) is a mixture of diblock and triblock copolymers.
7. The composition of claim 1 wherein (c) is present in an amount of from about 1 to about 10% by weight, based on the total weight of the composition.
8. The composition of claim 1 wherein (d) is hydrogenated polydecene.
9. The composition of claim 1 wherein (d) is present in an amount of from about 10 to about 50% by weight, based on the total weight of the resultant composition.
10. The composition of claim 1 wherein (a′) and (a″) are present in a total amount of less than 7% by weight, (c) is present in an amount of less than 10% by weight, all weights being based on the weight of the composition, and the composition is transparent in appearance.
11. The composition of claim 1 , further comprising an active ingredient.
12. The composition of claim 11 , wherein the active ingredient is a colorant.
13. A process for making a non-aqueous carrier composition capable of forming a gel structure, comprising:
a) mixing a first composition and second composition at a temperature of about 90° C. to about 125° C., to form a heated composition,
wherein the first composition comprises:
i) a structuring agent consisting of a N-acyl glutamic acid diamide having a straight-chain alkyl group comprising dibutyl lauroyl glutamide and
ii) a N-acyl glutamic acid diamide having a branched-chain alkyl group comprising dibutyl ethylhexanoyl glutamide; and
iii) at least one gel-promoting solvent, wherein said gel-promoting solvent is capable of dissolving said dibutyl ethylhexanoyl glutamide and said dibutyl lauroyl glutamide at a temperature of from about 90° C. to about 125° C.; and
wherein the second composition comprises:
i) at least one block copolymer having at least one hard segment and at least one soft segment; and
ii) at least one solvent capable of solubilizing the at least one hard segment and/or the at least one soft segment of the block copolymer;
and optionally at least one active ingredient; and
b) cooling the heated composition to form the non-aqueous, structured, gel-form composition, wherein the composition has a hardness value ranging from about 30 to about 300 gf, and a melting point of about 50° C. or higher, wherein the composition is free of antiperspirant agent.
14. The process of claim 13 , wherein the second composition further comprises at least one oil-soluble polar modified polymer; and
at least one solvent capable of solubilizing the at least one oil-soluble polar modified polymer.
15. The process of claim 13 , wherein the second composition further comprises the active ingredient.