Susan E Cooper

US Patent:

20050047990, Mar 3, 2005

Filed:

Sep 3, 2003

Appl. No.:

10/654327

Inventors:

Wayne Rees - Racine WI, US
Terry Kovara - Racine WI, US
Susan Cooper - Racine WI, US

International Classification:

C01B011/04

US Classification:

423473000

Abstract:

A method of reducing light-induced degradation of stabilized hypochlorite solutions when packaged in a container which is in whole or in part transparent or semi-transparent is described. The method involves incorporating at least one UV blocker in at least the transparent or semi-transparent portion of the container or incorporating a UV blocker in a wrap which overlays at least the transparent or semi-transparent portion of the container. The container or wrap is composed of plastic such as polyethylene terephthalate, polyethylene, polypropylene, polystyrene or polyvinyl chloride. The UV blocker is present in a concentration of about 0.01-2.0% by weight and serves to provide reduction in transmission of UV light in a wavelength range of from about 300-400 nm. The stabilized hypochlorite solution is a buffered aqueous combination of mono-N-chlorosulfamate and di-N-chlorosulfamate salts. The invention is also directed to the stabilized hypochlorite solution in combination with a container for the solution, the container being in whole or in part transparent or semi-transparent and having at least one UV blocker present in relation thereto.