# US 5,703,131 A · Method for the detoxification of mustard gas sulfur-containing quaternary ammonium ionene polymers and their use as microbicides

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- Number: US 5,703,131 A
- Document ID: US5703131A
- Status: Granted
- Kind: A
- Application number: 08/529,711
- Filed: 1995-09-18
- Granted: 1997-12-30
- Earliest claimed: 1992-08-12
- Assignees: Buckman Laboratories International, Inc.
- Inventors: Wallace E. Puckett; Mark L. Zollinger; Fernando Del Corral
- Web page: https://patentgrep.com/patent/US5703131A

## CPC

- A62D 3/30: by reacting with chemical agents
- A61L 2/18: Liquid substances
- A62D 3/36: Detoxification by using acid or alkaline reagents
- C02F 1/50: by addition or application of a germicide or by oligodynamic treatment {(C02F1/4606, C02F1/467, C02F1/76 take precedence)}
- A62D 2101/02: Chemical warfare substances, e.g. cholinesterase inhibitors
- A62D 2101/28: containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
- A62D 2101/47: containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
- A62D: CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)

## Abstract

A method for the detoxification of a mustard gas by reaction with a bis-tertiary diamine resulting in quaternary ammonium ionene polymers. Sulfur-containing quaternary ammonium ionene polymers which are useful as microbicides for controlling the growth of microorganisms in aqueous systems and on surfaces, as well as for inhibiting slime formation in aqueous systems and biocidal compositions contain effective amounts of the sulfur-containing quaternary ammonium ionene polymers.

## Claims

### Claim 1

A microbicidal composition comprising an aqueous solution containing a sulfur-containing quaternary ammonium ionene polymer comprising a repeating unit of formula II: ##STR5## wherein X.sup.- is a counter-ion; R.sup.1 and R.sup.2, which can be the same or different, are selected from a lower alkyl group and --CH.sub.2 --CH.sub.2 --OH; A' is a radical selected from --S--, --S--CH.sub.2 CH.sub.2 --S--, --S--S-- and the oxidation products of --S--, of --S--CH.sub.2 CH.sub.2 --S-- and of --S--S--; and B is a radical selected from C.sub.1 -C.sub.5 alkyl, --CH.sub.2 --CH(OH)--CH.sub.2 --, and --(CH.sub.2).sub.m --O--(CH.sub.2).sub.m --, where each m is independently 1, 2, or 3, wherein said sulfur-containing quaternary ammonium ionene polymer has a molecular weight of from 1,000 to 3,000, and wherein said sulfur-containing quaternary ammonium ionene polymer is present in an amount of from 0.05 ppm to 1,000 ppm in said aqueous solution.

### Claim 2 (depends on 1)

The microbicidal composition of claim 1 wherein A' is selected from --S--, and the oxidation products --SO--, --SO.sub.2 -- and --SO.sub.2 --S--.

### Claim 3 (depends on 2)

The microbicidal composition of claim 2 wherein the quaternary ammonium ionene polymer is selected from poly›thioethylene-(dimethyliminio) ethylene-(dimethyliminio)ethylene!and poly ›sulfoxyethylene-(dimethyliminio)ethylene-(dimethyliminio)ethylene!.