Patent 4022795 Issued on May 10, 1977. Estimated Expiration Date: May 10, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
546/259, Metal containing catalyst utilized208/262.5, Polychorinated biphenyl (PCB)564/305, Benzene ring containing564/309, Benzidines564/412, Preparing of halogen containing compound directly by halogenation or dehalogenation564/417, Preparing compound which contains halogen bonded directly to carbon568/316, Halogen containing reactant585/427, Arylene bond formed using metal-containing agent585/469From nonhydrocarbon feed
Dehalogenation of water-immiscible or sparingly soluble aromatic compounds containing chlorine or bromine by contacting with an aqueous solution of a formic acid salt in presence of a hydrogenation catalyst and a surface active agent.