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Organic Compounds -- Part Of The Class 532-570 Series > Azo Compounds Containing Formaldehyde Reaction Product As The Coupling Component > Amino Nitrogen Containing (e.g., Urea, Sulfonamides, Nitrosamines, Oxyamines, Etc., And Salts Thereof) > Hydroxy Containing (h Of -oh May Be Replaced By A Group Ia Or Iia Light Metal) > Benzene Ring Containing > Purification Or Recovery Purification Or RecoveryPurification Or Recovery 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.06/15/06 - 20060129003 - Process and catalyst for purifying phenol The goal of this invention is to produce phenol of high purity by conversion of impurities that are present in the starting phenol, which is produced by the decomposition of cumyl hydroperoxide. The indicated goal is achieved by purifying the phenol containing admixtures of aliphatic and aromatic carbonyl compounds with ... 10/27/05 - 20050240065 - Extraction of phenol-containing effluent streams A process for extracting phenol from a phenol-containing aqueous solution is disclosed. The process entails contacting the aqueous solution with an extracting agent that comprise a mixture of 60 to 99% of methyl isobutyl ketone, 1 to 40% of anisole and 0 to 20% of mesitylene. ... 09/29/05 - 20050215835 - Method for removal of acetol from phenol A method is provided for the efficient, low cost removal of acetol from a phenol stream. The method results in removal of substantially all of the acetol from the phenol stream without the formation of substantial amounts of additional methylbenzofuran. The method also avoids the use of expensive reagents and ... 09/29/05 - 20050215834 - Method for removal of acetol from phenol A method is provided for the efficient, low cost removal of acetol from a phenol stream. The method results in removal of substantially all of the acetol from the phenol stream without the formation of substantial amounts of additional methylbenzofuran. The method also avoids the use of expensive reagents and ... 06/23/05 - 20050137429 - Methods for purification of phenol A process for producing a purified phenol stream generally includes contacting a phenol stream containing an initial concentration of hydroxyacetone and methylbenzofuran with an acidic ion exchange resin at a temperature of 50° C. to 100° C. to concurrently reduce the initial concentration of the hydroxyacetone and the methylbenzofuran in ... ### FreshPatents.com Support |