# US 2014/0154940 A1 · Controlled release biocidal salts

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- Number: US 2014/0154940 A1
- Document ID: US20140154940A1
- Status: Published application
- Kind: A1
- Application number: 14/176,597
- Filed: 2014-02-10
- Published: 2014-06-05
- Earliest claimed: 2005-12-09
- Assignees: Nevada Naturals Inc.
- Applicants: Nevada Naturals Inc.
- Inventors: Anthony J. Sawyer; Richard F. Stockel
- Web page: https://patentgrep.com/patent/US20140154940A1

## CPC

- A01N 37/44: containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N 43/38: condensed with carbocyclic rings
- A01N 43/50: 1,3-Diazoles; Hydrogenated 1,3-diazoles
- A01N 47/44: Guanidine; Derivatives thereof
- A23B 2/7295: {Antibiotics}
- A23B 2/754: containing carboxyl groups
- A23B 2/762: Organic compounds containing nitrogen
- A23B 4/20: Organic compounds; Microorganisms; Enzymes
- B65D 81/28: Applications of food preservatives, fungicides, pesticides or animal repellants
- A23V 2002/00: Food compositions, function of food ingredients or processes for food or foodstuffs
- Y10T 428/662: Wood timber product [e.g., piling, post, veneer, etc.]
- Y10T 442/2525: Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A23B: PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- A23V: INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A controlled release biocidal salt of a first component comprises a cation of a Nα—(C1-C22) alkanoyl di-basic amino acid alkyl (C1-C22) ester cationic biocidal molecule and a second component comprising an anion of a monomeric anionic molecule having insignificant biocidal activity. The salt is characterized such that when the salt is exposed to an aqueous medium, the salt partially dissolves thereby releasing biocidal ions in an amount sufficient to exceed the MIC or MBC of a target bacteria being controlled, and further characterized as leaving a residual reservoir of undissolved salt capable of releasing more biocidal ions as the salt is consumed or otherwise removed from the environment encompassing the target bacteria. The preferred cationic biocidal molecule comprises Nα-lauroyl-L-arginine ethyl ester (“LAE”).

## Claims

### Claim at position 1

1-20. (canceled)

### Claim 21

A controlled release biocidal salt of a first component comprising the cation of an Nα—(C8-C18)acyl(C2-C18) alkyl ester of a dibasic amino acid and a second component comprising the anion of a fattay acid with a chain length between 8 and 16 carbon atoms, said salt being characterized such that when the salt is exposed to an aqueous medium, the salt partially dissolves thereby releasing biocidal ions in an amount sufficient to exceed the minimum inhibitory concentration or minimum bactericidal concentration of a target bacteria being controlled, and further characterized as leaving a residual reservoir of undissolved salt capable of releasing more biocidal ions as the salt is consumed or otherwise removed from the environment encompassing the target bacteria.

### Claim 22 (depends on 21)

The salt of claim 21 wherein the cation is that of Nα-lauroyl-L-arginine ethyl ester.

### Claim 23 (depends on 21)

The salt of claim 21, wherein the anion of the fatty acid is laurate.

### Claim 24 (depends on 21)

The salt of claim 21 in which the solubility of the salt is between about 2ppm and 500 ppm.

### Claim 25 (depends on 21)

The salt of claim 21 which is formed by a metathesis reaction between a salt of Nα—(C8-C18)acyl(C2-C18) alkyl ester of a dibasic amino acid and an alkali metal salt of a fatty acid.

### Claim 26 (depends on 21)

The salt of claim 21 which is formed by the direct acid-base reaction between Nα—(C8-C18)acyl(C2-C18) alkyl ester of a dibasic amino acid and a fatty acid.

### Claim 27 (depends on 21)

A product containing the salt of claim 21, said product being selected from the group consisting of a food or food product; a beverage; a preservative composition; a perishable item; a packaging; fluid-dispensing tubing; a plastic; a pharmaceutical product; a medical device, a cosmetic; a deodorant; a coating; a dental care composition; a dental care appliance; a dental hygiene product; a wound care composition; a dermatological care composition; a personal hygiene item; an adult novelty item; a sexual aid item; a sex toy item; a condom item; a pregnancy barrier item; an infant care product; a surgical soap; a surgical or hospital gown; a microbiocide; an antifungal composition; an anti-yeast composition; an anti-mold composition; an animal care product; an apparel product; a woven or nonwoven or knit fabric; a foam; a film; a paper product; wood or a wood product; a construction material; plasterboard; a rubber item; and a virucide.