Insect repellant compositions
AssigneeJohnson & Johnson Consumer Companies, Inc.
InventorsDanilo L. Lambino, Kennie U. Dee, Susan M. Niemiec
Life of this patent
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Abstract
The present invention relates to insect repellant compositions containing, based upon the total weight of the composition, from about 6 to about 30 percent by weight of insect repellant active material having functionality selected from ester, amide, urethane or combinations thereof; from about 5 to about 30 percent by weight of alcohol, and from about 1 to about 10 percent by weight of nonionic surfactant. The compositions of the invention exhibit reduced rates of degradation of the active material in solution and are less drying and irritating to sensitive skin.
Claims19
An insect repellant composition comprising, based upon the total weight of the composition:
- from about 6 to about 30 percent of an insect repellant active material consisting essentially of at least one material selected from the group consisting of:
- one or more compounds of the formula
- wherein
- R1 is a branched or unbranched alkyl group having about 1 carbon atom to about 6 carbon atoms;
- R2 is H, methyl or ethyl;
- R3 is a branched or unbranched alkyl or alkoxy group having from about 1 carbon atom to about 8 carbon atoms;
- and
- X is a —CN or a —COOR4 group, wherein
- R4 is a branched or unbranched alkyl group having from about 1 carbon atom to about 6 carbon atoms;
- from about 5 to about 30 percent of alcohol selected from the group consisting of:
- a glycol monoalkyl ether, said alkyl having from about 1 carbon atom to about 4 carbon atoms;
- a glycol containing from about 3 carbon atoms to about 6 carbon atoms;
- oligomers of ethylene glycol or propylene glycol;
- and
- mixtures thereof;
- and
- from about 1 to about 10 percent of surfactant selected from the group consisting of:
- alkoxylated alcohols having the structure
- R5—(OCH2CH2)y—OH
- wherein R5 is a branched or unbranched alkyl group having about 6 carbon atoms to about 22 carbon atoms and y is between about 10 and about 100;
- alkoxylated alkyl phenols having the structure
- wherein R6 is a branched or unbranched alkyl group having about 6 carbon atoms to about 22 carbon atoms and z is between about 10 and about 120;
- and mixtures thereof,
- wherein the composition contains less than about 5% by weight of lower monohydric alcohols having from about 2 to about 4 carbon atoms.
A method of reducing the rate of degradation of an insect repellant active material in an insect repellant composition wherein said insect repellant active material is present at from about 6 to 30 percent of the composition and consists essentially of a material selected from the group consisting of
- one or more compounds of the formula
- wherein
- R1 is a branched or unbranched alkyl group having about 1 carbon atom to about 6 carbon atoms;
- R2 is H, methyl or ethyl;
- R3 is a branched or unbranched alkyl or alkoxy group having from about 1 carbon atom to about 8 carbon atoms;
- and
- X is a —CN or a —COOR4 group, wherein
- R4 is a branched or unbranched alkyl group having from about 1 carbon atom to about 6 carbon atoms;
- comprising the step of incorporating into the composition a degradation-effective amount of a surfactant selected from the group consisting of alkoxylated alcohols having the structure
- R5—(OCH2CH2)y—OH
- wherein R5 is a branched or unbranched alkyl group having about 6 carbon atoms to about 22 carbon atoms and y is between about 10 and about 100;
- alkoxylated alkyl phenols having the structure
- wherein R6 is a branched or unbranched alkyl group having about 6 carbon atoms to about 22 carbon atoms and z is between about 10 and about 120;
- and mixtures thereof, wherein said repellant composition contains less than about 5% by weight of lower monohydric alcohols having from about 2 to about 4 carbon atoms.
A method of repelling insects from a host comprising topically applying to the host an insect repellant composition, said composition comprising:
- from about 6 to about 30 percent of insect repellant active material selected from the group consisting of
- one or more compounds of the formula
- wherein
- R1 is a branched or unbranched alkyl group having about 1 carbon atom to about 6 carbon atoms;
- R2 is H, methyl or ethyl;
- R3 is a branched or unbranched alkyl or alkoxy group having from about 1 carbon atom to about 8 carbon atoms;
- and
- X is a —CN or a —COOR4 group, wherein
- R4 is a branched or unbranched alkyl group having from about 1 carbon atom to about 6 carbon atoms;
- from about 5 to about 30 percent of alcohol selected from
- a glycol monoalkyl ether, said alkyl having from about 1 carbon atom to about 4 carbon atoms;
- a glycol containing from about 3 carbon atoms to about 6 carbon atoms;
- oligomers of ethylene glycol or propylene glycol;
- or
- mixtures thereof;
- and
- from about 1 to about 10 percent by weight of surfactant selected from the group consisting of alkoxylated alcohols having the structure
- R5—(OCH2CH2)y—OH
- wherein R5 is a branched or unbranched alkyl group having about 6 carbon atoms to about 22 carbon atoms and y is between about 10 and about 100;
- alkoxylated alkyl phenols having the structure
- wherein R6 is a branched or unbranched alkyl group having about 6 carbon atoms to about 22 carbon atoms and z is between about 10 and about 120;
- and mixtures thereof, wherein the composition contains less than about 5% by weight of lower monohydric alcohols having from about 2 to about 4 carbon atoms.
Dependencies are inferred from the claim text.