Malodor neutralizing compositions comprising undecylenic acid or citric acid
AssigneeRobetet, Inc.
InventorsSTEPHEN V. DENTE, Ketrin Leka, Brian Fielder, Garry Johnson
Life of this patent
Estimating the term…
Abstract
Compositions comprising undecylenic acid or citric acid and certain esters are effective for reducing malodors. The esters are in the molecular weight range of between 150-200 when the acid is undecylenic acid and in the range of between 130-230 when the acid is citric acid. These compositions can be used in perfumed products, household products and personal care products.
Claims33
A malodor neutralizing composition comprising:
- (1) undecylenic acid or citric acid, and
- (2) at least one ester of the formula
- wherein
- R1 is hydrogen, phenyl substituted by hydroxy or an amino group, or a C1-C11 alkyl group which can optionally contain 1 or 2 double bonds and which optionally can be substituted by a phenyl group, and
- R2 is C1-C6 unbranched alkyl, a C3-C12 branched alkyl group which can optionally contain 1 or 2 double bonds, or benzyl,
- with the proviso that
- (i) where R1 is a C1-C11 alkyl or alkylene radical substituted by phenyl, such substitution occurs at the 2- or higher carbon atom, and
- (ii) where both R1 and R2 are unbranched alkyls, the total number of carbon atoms in said alkyls is not greater than 12 and, if said total number of carbon atoms is greater than 8, the difference between the number of carbon atoms in R1 and R2 is at least 2,
- said ester having a molecular weight of between 150 and 200 when ingredient (1) is undecylenic acid and a molecular weight of between 130 and 230 when ingredient (1) is citric acid
A method for reducing malodors which comprises contacting the source of said malodors with an effective amount of malodor neutralizing composition comprising:
- (1) undecylenic acid or citric acid, and
- (2) at least one ester of the formula
- wherein
- R1 is hydrogen, phenyl substituted by hydroxy or an amino group, or a C1-C11 alkyl group which can optionally contain 1 or 2 double bonds and which optionally can be substituted by a phenyl group, and
- R2 is C1-C6 unbranched alkyl, a C3-C12 branched alkyl group which can optionally contain 1 or 2 double bonds, or benzyl,
- with the proviso that
- (i) where R1 is a C1-C11 alkyl radical substituted by phenyl, such substitution occurs at the 2- or higher carbon atom, and
- (ii) where both R1 and R2 are unbranched alkyls, the total number of carbon atoms in said alkyls is not greater than 12 and, if said total number of carbons is greater than 8, the difference between the number of carbon atoms in R1 and R2 is at least 2,
- said ester having a molecular weight of between 150 and 200 when ingredient (1) is undecylenic acid and a molecular weight of between 130 and 230 when ingredient (1) is citric acid.
A method for reducing malodors emanating from household or personal care products which comprises admixing to said products an effective amount of a malodor neutralizing composition comprising
- (1) undecylenic acid or citric acid
- (2) at least one ester of the formula
- wherein
- R1 is hydrogen, phenyl substituted by hydroxy or an amino group, or a C1-C11 alkyl group which can optionally contain 1 or 2 double bonds and which optionally can be substituted by a phenyl group, and
- R2 is C1-C6 unbranched alkyl, a C3-C12 branched alkyl group which can optionally contain 1 or 2 double bonds, or benzyl,
- with the proviso that
- (i) where R1 is a C1-C11 alkyl radical substituted by phenyl, such substitution occurs at the 2- or higher carbon atom, and
- (ii) where both R1 and R2 are unbranched alkyls, the total number of carbon atoms in said alkyls is not greater than 12 and, if said total number of carbons is greater than 8, the difference between the number of carbon atoms in R1 and R2 is at least 2,
- said ester having a molecular weight of between 150 and 200 when ingredient (1) is undecylenic acid and a molecular weight of between 130 and 230 when ingredient (1) is citric acid.
Dependencies are inferred from the claim text.