Claims for Patent: 5,389,676

Summary for Patent: 5,389,676

Title:	Viscous surfactant emulsion compositions
Abstract:	Antiinfective water-in-oil or oil-in-water emulsions comprising amphoteric surfactants of betaines and amine oxides, hydrophobic materials and emulsion aids.
Inventor(s):	Michaels; Edwin B. (Milford, CT)
Assignee:	E. B. Michaels Research Associates, Inc. (Milford, CT)
Application Number:	08/121,277
Patent Claims:	1. A water-in-oil or oil-in-water emulsion comprising an amphoteric surfactant solution comprising i) a mixture of a betaine selected from the group consisting of alkyl-N-betaines, alkyl amido ethyl betaines, alkyl amido propyl betaines, alkyl sultaines, alkyl amido propyl hydroxy sultaines, alkyl hydroxy propyl sultaines, alkyl-N-sulfobetaines and acyl-N-betaine or mixtures of two or more thereof and an amine oxide selected from the group consisting of alkyl-N,N dimethylamine oxides, alkyl-N,N-dihydroxyethylamine oxides and acylamide t-amine oxides or mixtures of two or more thereof; ii) a pharmaceutically or dermatologically acceptable substantially nonpolar hydrophobic material having a HLB value of 1 or less and iii) at least one water soluble, pharmaceutically or dermatologically acceptable nonionic, cationic or amphoteric emulsion aid. 2. A composition according to claim 1 wherein the hydrophobic material is selected from the group consisting of isopropyl myristate, coconut oil, peanut oil, palm oil, mineral oils, paraffin oil, trialkylates of glycerin, highly saturated oils, animal waxes, mineral waxes, vegetable waxes, high molecular weight oils, petrolatum and lanolin-or-mixtures thereof. 3. A composition according to claim 1 wherein the emulsion aids have a HLB value of greater than 25. 4. A composition according to claim 1 wherein the emulsion aids are selected from the group consisting of gelatin, pectin, alkyl polyhydric alcohols, alkyl monohydric alcohols, cellulose gums or synthetic analogs thereof, cationic gums, hyaluronic acid and starch derivatives or mixtures thereof. 5. An emulsion according to claim 4 wherein the emulsion aid comprises at least one member of the group consisting of gelatin and cellulose gums and at least one polyhydric or monohydric alcohol. 6. A composition according to claim 4 wherein the emulsion aid is a combination of gelatin, cellulose gum and polyhydric alcohol. 7. A composition according to claim 1 comprising 0.1-10% amphoteric surfactant of betaines and amine oxides; 1-25% emulsion aids; and 0.5-90% hydrophobic materials. 8. A composition according to claim 1 comprising 0.1-10% amphoteric surfactant of betaines and amine oxides, 0.1-10% nonionic and/or cationic cellulose gums or synthetic analogs thereof; 0-4% gelatin; 0-3% pectin; 1-15% polyhydric alcohols; 0.5-90% hydrophobic materials. 9. A composition according to claim 1 wherein the hydrophobic material is an ester or ether of long chain alkyl alcohols wherein there are no free hydroxyl groups in the ester or ether. 10. A composition according to claim 1 wherein the hydrophobic material is an ester or ether of long chain alkyl polyhydric alcohols wherein there are no free hydroxyl groups in the ester or ether.

Details for Patent 5,389,676

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Aimmune Therapeutics, Inc.	PALFORZIA	peanut (arachis hypogaea) allergen powder-dnfp	Powder	125696	January 31, 2020	5,389,676	2013-09-13