# US 5,352,706 A · Method and composition for controlling the growth of microorganisms

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- Number: US 5,352,706 A
- Document ID: US5352706A
- Status: Granted
- Kind: A
- Application number: 08/095,976
- Filed: 1993-07-22
- Granted: 1994-10-04
- Earliest claimed: 1993-07-22
- Assignees: Betz Laboratories, Inc.
- Inventors: Deborah K. Donofrio; Wilson K. Whitekettle
- Web page: https://patentgrep.com/patent/US5352706A

## CPC

- A01N 41/10: Sulfones; Sulfoxides
- 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

## Abstract

A microbial inhibiting composition and method is disclosed. The composition comprises an amount, effective for the intended purpose of diiodomethyl-p-tolylsulfone and alkyl dimethyl benzyl ammonium chloride. The method comprises administering an amount of this combined treatment to the particular water containing system for which treatment is desired.

## Claims

### Claim 1

A microbial inhabiting composition comprising (a) diiodomethyl-p-tolylsulfone and (b) alkyl dimethyl benzyl ammonium chloride wherein (a) and (b) are present in an amount synergistically effective to reduce the growth of fungi.

### Claim 2 (depends on 1)

The composition as recited in claim 1 wherein the weight ratio of (a) to (b) is from about 1:52.6 to 2.4:1.

### Claim 3 (depends on 1)

The composition as recited in claim 1 wherein the weight ratio of (a) to (b) is about 1:2.

### Claim 4

A method for controlling the growth of fungi in an aqueous system which comprises adding to said system a synergistically effective amount for the purpose of a composition comprising (a) diiodomethyl-p-tolylsulfone and (b) alkyl dimethyl benzyl ammonium chloride.

### Claim 5 (depends on 4)

The method as recited in claim 4 wherein the weight ratio of (a):(b) is from about 1:52.6 to 2.4:1.

### Claim 6 (depends on 4)

The method as recited in claim 4 wherein the weight ratio of (a):(b) is about 1:2.

### Claim 7 (depends on 4)

The method as recited in claim 4 wherein said composition is added to said system in an amount of from about 0.1 to about 200 parts per million of said aqueous system.