C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 39/235 (2006.01) C07C 37/88 (2006.01)
Patent
CA 2408307
A color stable aqueous solution containing a relatively high concentration of sodium o-phenylphenate is described where stabilizing components include an oxygen scavenger and a free radical scavenger. The aqueous solutions of NaOPP prepared according to the present invention exhibit an absorbance at 400 manometers of at most one-half the absorbance exhibited by untreated solutions after incubation for 72 hours at 44 ~C and 4 hours under ultraviolet light. The aqueous solution is useful as a concentrate that can be diluted to a desirable antimicrobial concentration level prior to application.
L'invention concerne une solution aqueuse stable de couleurs renfermant une concentration relativement élevée d'orthophénylphénate de sodium, dont des composés stabilisants contiennent un désoxygénant et un agent de fixation à radical libre. Les solutions aqueuses de NaOPP préparées selon la présente invention ont une absorbance située à 400 nanomètres d'une moitié tout au plus de l'absorbance présentée par des solutions non traitées, suite à une incubation de 72 heures à 44 ·C et de 4 heures à la lumière ultraviolette. On utilise cette solution aqueuse comme un concentré qui peut être dilué à un niveau de concentration antimicrobienne souhaitable avant application.
Carsten Dawn L.
Gartner Charles D.
Walter Richard W. Jr.
Young Tracy L.
Smart & Biggar
The Dow Chemical Company
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