Benefit agent delivery system
The present invention relates to a delivery system which enables selective entrapment. The delivery system comprises a solvent system which is a hydro-alcoholic solvent system; 1.5-10% of at least one polymer; and 0.00025-0.75% of at least one enabler. It may optionally comprise one or more benefit agent.
1 . A delivery system comprising:
a) a hydro alcoholic solvent system;
b) 1.5-10% of at least one polymer;
c) 0.00025-0.75% of at least one enabler; and
d) optionally, at least one benefit agent;
wherein when the benefit agent is present, the benefit agent is different from the enabler; and
wherein the at least one polymer includes polyvinylpyrrolidone.
2 . The delivery system as claimed in claim 1 , wherein the alcohol is at least one selected from the group consisting of primary, secondary, and tertiary C 1 -C 5 alcohol.
3 . The delivery system as claimed in claim 1 , wherein the hydro alcoholic solvent system comprises ethanol in an amount of 90 to 97% weight and water in an amount of 3 to 10 wt %.
4 . The delivery system as claimed in claim 1 , wherein the amount of the benefit agent when present is in a range from 1 wt % to 15 wt %.
5 . The delivery system as claimed in claim 1 , wherein the polyvinylpyrrolidone has a weight average molecular weight in a range of 25000 to 270000 Daltons.
6 . The delivery system as claimed in claim 1 , wherein an enabler of the at least one enabler has a log P value between −1.5 to 6.
7 . The delivery system as claimed in claim 1 , wherein an enabler of the at least one enabler is selected from carboxylic acids, amines, esters, phenols, and carbonyl compounds.
8 . The delivery system as claimed in claim 1 , wherein an enabler of the at least one enabler is selected from acetic acid, propionic acid, and lauric acid.
9 . The delivery system as claimed in claim 1 , wherein an enabler of the at least one enabler is selected from triethyl amine, dodecyl amine, decyl amine, and ethyl amine.
10 . The delivery system as claimed in claim 1 , wherein an enabler of the at least one enabler is selected from octyl methoxy cinnamate, ethylacetate, and methyl laurate.
11 . The delivery system as claimed in claim 1 , wherein an enabler of the at least one enabler is selected from BHT, p-Cresol, and triclosan.
12 . The delivery system as claimed in claim 1 , wherein an enabler of the at least one enabler is selected from acetophenone, benzaldehyde, and acetone.
13 . A delivery system comprising:
a) a hydroalcoholic solvent system comprising ethanol in an amount of 90% to 97% weight and water in an amount of 3 to 10%;
b) 1.5-10% of at least one polymer;
c) 0.00025-0.75% of at least one enabler; and
d) 1 wt % to 15 wt % of at least one benefit agent;
wherein the benefit agent is different from the enabler; and
wherein the at least one polymer includes polyvinylpyrrolidone.
14 . The delivery system as claimed in claim 13 , wherein the benefit agent is selected from a fragrance component, anti-oxidants, humectants, emollients, anti-microbial agents, anti-aging actives, skin-lightening actives, skin conditioning agents, cooling agents, preservatives, sun-screen agents, vitamins, and combinations thereof.
15 . The delivery system as claimed in claim 13 , wherein the hydro alcoholic solvent system comprises ethanol in an amount of 90 to 97% weight and water in an amount of 3 to 10 wt %.
16 . The delivery system as claimed in claim 13 , wherein the amount of the benefit agent when present is in a range from 1 wt % to 15 wt %.
17 . The delivery system as claimed in claim 13 , wherein at the polyvinylpyrrolidone has a weight average molecular weight in a range of 25000 to 270000 Daltons.
18 . The delivery system as claimed in claim 13 , wherein an enabler of the at least one enabler has a log P value between −1.5 to 6.
19 . The delivery system as claimed in claim 13 , wherein an enabler of the at least one enabler is selected from carboxylic acids, amines, esters, phenols, and carbonyl compounds.