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US 6,605,643 B1Granted
Insect repellent emulsions
AssigneeSchering-Plough Healthcare Products, Inc.
InventorJamie S. Ross
Life of this patent
Estimating the term…
Abstract
The invention relates to storage stable insect repellent emulsion formulations containing N,N-Diethyl-m-toluamide, together with water, a film-forming polymer and an emulsifier-emulsion stabilizer.
Claims8
An insect repellent emulsion composition comprising:
- about 5 to about 25 weight percent of N,N-diethyl-m-toluamide;
- water;
- about 2 weight percent of octadecene/maleic anhydride copolymer;
- about 0.1 weight percent of acrylates/C10-30 alkyl acrylate crosspolymer;
- about 2 weight percent of stearic acid;
- about 1.8 weight percent of triethanolamine;
- and
- a supplemental emulsifying agent comprising at least one of:
- about 4 weight percent of sorbitan oleate;
- about 3 weight percent of sorbitan stearate;
- and about 3 weight percent of glyceryl stearate.
8 more elements
An insect repellent emulsion composition comprising:
- about 5 to about 25 weight percent of N,N-diethyl-m-toluamide;
- water;
- about 2 weight percent of octadecene/maleic anhydride copolymer;
- about 0.1 weight percent of acrylates/C10-30 alkyl acrylate crosspolymer;
- about 2 weight percent of stearic acid;
- about 1.8 weight percent of triethanolamine;
- a supplemental emulsifying agent comprising at least one of:
- about 4 weight percent of sorbitan oleate;
- about 3 weight percent of sorbitan stearate;
- and about 3 weight percent of glyceryl stearate;
- and
- a sunscreening effective amount of a sunscreening agent comprising octylmethoxycinnamate, octyl salicylate and homomenthyl salicylate.
9 more elements
An insect repellent emulsion composition comprising:
- about 5 to about 25 weight percent of N,N-diethyl-m-toluamide;
- water;
- about 2 weight percent of octadecene/maleic anhydride copolymer;
- about 0.3 weight percent of acrylates/C10-30 alkyl acrylate crosspolymer;
- up to about 10 percent by weight of a supplemental emulsifying agent selected from the group consisting of:
- sorbitan stearate;
- stearic acid;
- sorbitan oleate;
- cetyl alcohol;
- glyceryl oleates;
- glyceryl stearates;
- sorbitan sesquioleate;
- diethanolamine salt of cetyl phosphate;
- Oleth-20;
- a polyethylene glycol diester of Stearic acid having a formula CH3(CH2)18C(O)(OCH2CH2)8)C(O)(CH2)16CH3;
- a polyethylene glycol ester of oleic acid having a formula CH3(CH2)7CH═CH(CH2)7C(O)(OCH2CH2)8OH;
- a polyethylene glycol ester of stearic acid having a formula CH3(CH2)16C(O)(OCH2CH2)2OH;
- Polysorbate-20;
- Polysorbate-60;
- Polysorbate-80;
- propylene glycol stearate;
- sodium laureth sulfate;
- and mixtures of any two or more thereof;
- and
- a sunscreening effective amount of a sunscreening agent.
22 more elements
Dependencies are inferred from the claim text.