Polyhalobenzylic disulfooxonium compounds
Patent 4075238 Issued on February 21, 1978. Estimated Expiration Date: 
February 21, 1995. 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.
February 21, 1995. 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.Patent References 3821320 3869491 InventorsAssigneeApplicationNo. 05/607326 filed on 08/25/1975US Classes:558/23, Chalcogen bonded directly to the sulfate group549/10, Plural ring hetero atoms in the hetero ring558/34, Plural chalcogens attached indirectly to the sulfate group by acyclic nonionic bonding562/405, Aromatic562/422, Of halo alkyl containing compound562/489, Carboxyl not directly attached to a ring562/495, Additional unsaturation562/496, Carboxyl, or salt thereof, not bonded directly to ring562/83, Halogen attached indirectly to the sulfonate group by nonionic bonding564/124, Preparing directly from cyano containing compound564/130, From acyclic nitrile564/131, Which contains carbon to carbon unsaturation564/207, Benzene ring in a substituent E564/219, A ring or polycyclo ring system in a substituent E is attached indirectly to the carboxamide nitrogen or to an amino nitrogen in substituent E by acyclic nonionic bonding568/437, Halogen containing reactant568/811, Polyhydroxy (H of -OH may be replaced by a Group IA or IIA light metal)568/812, Halogen containing570/191, Preparing acyclic haloalkyl group containing compound570/199, Bonding benzene rings to the same acyclic carbon or to an acyclic carbon chain570/201Oxygen containing organic compound reactantExaminersPrimary: Chan, NickyAttorney, Agent or FirmInternational ClassC07C 381/00 (20060101)AbstractPolyhalobenzylic disulfooxonium compounds are produced by the reaction of aromatic methyl, halomethyl or hydroxymethyl substituents with sulfur trioxide. The disulfooxonium salts are readily converted to alcohols by hydrolysis to provide monomers for the production of fire resistant polymers and additives for polymers. Likewise, the disulfooxonium compounds of this invention present chemical intermediates for a wide range of useful products such as halogenated pesticides.Other References
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