Antimicrobial compositions containing a cationic antimicrobial and an acidic glycolopid
AssigneeLANXESS Corporation
InventorsSiri Tan, Marcelo Filgueira, David Laganella
Life of this patent
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Abstract
The present disclosure relates to antimicrobial compositions containing at least one cationic antimicrobial and at least one acidic glycolipid and the use of such compositions in product formulations, particularly anionic-type formulations, such as in personal care, home care and other product formulations.
Claims21
1-52. (canceled)
A product formulation comprising
- at least one of an anionic rheology modifier, an anionic surfactant, or an anionic emulsifier;
- and
- an antimicrobial effective amount of a combination of at least one cationic antimicrobial and at least one acidic glycolipid,
- wherein the cationic antimicrobial comprises
- (i) a compound having one or more cationic guanidine or amidine functional groups;
- or
- (ii) a Nα-alkanoyl dibasic amino acid ester salt,
- the at least one acidic glycolipid comprises at least one acidic sophorolipid, and
- the amount by weight of the at least one acidic glycolipid is greater than or about equal to the amount by weight of the at least one cationic antimicrobial.
A method of controlling microbial growth in or preserving a product formulation comprising at least one of an anionic rheology modifier, an anionic surfactant or an anionic emulsifier, the method comprising
- adding to the product formulation an antimicrobial effective amount of at least one cationic antimicrobial and at least one acidic glycolipid,
- wherein the cationic antimicrobial comprises
- (i) a compound having one or more cationic guanidine or amidine functional groups;
- or
- (ii) a Nα-alkanoyl dibasic amino acid ester salt,
- the at least one acidic glycolipid comprises at least one acidic sophorolipid, and the amount by weight of the at least one acidic glycolipid is greater than or about equal to the amount by weight of the at least one cationic antimicrobial.
An antimicrobial composition comprising from about 10 wt % to about 95 wt %, based on the total weight of the antimicrobial composition, of a combination of (a) at least one cationic antimicrobial and (b) at least one acidic glycolipid, wherein the cationic antimicrobial comprises
- (i) a compound having one or more cationic guanidine or amidine functional groups;
- or
- (ii) a Nα-alkanoyl dibasic amino acid ester salt, and
- the at least one acidic glycolipid comprises at least one acidic sophorolipid, and the ratio by weight of (b) to (a) is from about 1:1 to 100:1.
Dependencies are inferred from the claim text.