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Chemistry Of Hydrocarbon Compounds > Aromatic Compound Synthesis > By Condensation Of Entire Molecules Or Entire Hydrocarbyl Moieties Thereof, E.g., Alkylation, Etc. > Using Halogen-containing Catalyst Using Halogen-containing CatalystUsing Halogen-containing Catalyst patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.01/18/07 - 20070015946 - Process for the preparation of substituted fluorenes Methods for the preparation of fluorenyl-type ligand structures and substituted fluorenyl groups which may be employed in metallocene-type olefin polymerization catalysts. There is provided a 2,2′-dihalogen-diphenylmethylene having a methylene bridge connecting a pair of phenyl groups. Each phenyl group has a halogen on a proximal carbon atom relative to the ... ### FreshPatents.com Support |