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Manganese complexes of nitrosophenols as infrared arsorbers

  • US 2,971,921 A
  • Filed: 01/26/1959
  • Issued: 02/14/1961
  • Est. Priority Date: 01/26/1959
  • Status: Expired due to Term
First Claim
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1. A METHOD OF INCREASING THE INFRARED ABSORPTION OF MATERIALS WHICH COMPRISES INCORPORATING THEREIN AT LEAST 0.01% BY WEIGHT OF THE MANGANOUS COMPLEX OF AN O-NITROSOHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF 5-DI-LOWER ALKYLAMINO-2-NITROSOPHENOL, 4-METHYL2-NITROSOPHENOL, 5-METHOXY-2-NITROSOPHENOL, 5-ACETAMINO2-NITROSOPHENOL, 1-NITROSO-2-NAPHTHOL, 1-NITROSO-2-NAPHTHOL-6-SULFONAMIDE AND 1-METHYL-7-ISOPROPYL-10-NITROSO9-PHENANTHROL.

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