The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2015
Filed:
Jul. 26, 2010
Kevin E. Janak, Ossining, NY (US);
Sarah Elizabeth Kopecky, Monroe, NY (US);
Michael Leonid Ludensky, Randolph, NJ (US);
Philip Gerdon Sweeny, Hackettstown, NJ (US);
Kevin E. Janak, Ossining, NY (US);
Sarah Elizabeth Kopecky, Monroe, NY (US);
Michael Leonid Ludensky, Randolph, NJ (US);
Philip Gerdon Sweeny, Hackettstown, NJ (US);
Lonza Inc., Visp, CH;
Abstract
Disclosed are compositions for stabilizing a source of active halogen in aqueous solution. The compositions comprise (i) at least one substituted N-hydrogen compound, such as 5,5-dimethylhydantoin, and (ii) at least one additional nitrogen compound selected from ammonia, ammonium salts, and nitrogen compounds containing no carbon-hydrogen bonds, the molar ratio of (i) and (ii) being in the range of 50:1 to 0.02:1. Active halogen-containing aqueous solutions stabilized by the above compositions are particularly useful for controlling microbial and planktonic growth in aqueous systems such as process liquids in the pulping or papermaking industry. The compositions are also useful in reducing the corrosivity of halogen-containing solutions.