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

• Current Assignee: John L. Rodgers, Ralph A. Coleman
• Original Assignee: John L. Rodgers, Ralph A. Coleman
• Inventors: Coleman, Ralph A., Rodgers, John L.
• Application Number:
  US03/788,737
• Time in Patent Office: 750 Days
• US Class Current: 252/587
• CPC Class Codes: C07F 13/005 Compounds without a metal-carbon linkage
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G02B 5/223 containing organic substances, e.g. dyes, inks or pigments

Claims

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.

2. A METHOD OF PROTECTING MATERIALS FROM INCIDENT INFRARED RAYS WHICH COMPRISES INTERPOSING BETWEEN THE SOURCE OF SAID INFRARED RAYS AND THE MATERIAL TO BE PROTECTED, A BARRIER CONTAINING AT LEAST 0.01 GRAM PER SQUARE FOOT OF BARRIER OF THE MANGANOUS COMPLEX OF AN O-NITROSOHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF 5-DI-LOWER ALKYLAMINO-2-NITROSOPHENOL, 4-METHYL-2-NITROSOPHENOL, 5-METHOXY-2-NITROSOPHENOL, 5-ACETAMINO-2NITROSOPHENOL, 1-NITROSO-2-NAPHTHOL, 1-NITROSO-2-NAPHTHOL-6-SULFONAMIDE AND 1-METHYL-7-ISOPROPYL-10-NITROSO9-PHENANTHROL.