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Class Information
Number: 568/728
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Benzene ring containing > Phenols (h of -oh may be replaced by a group ia or iia light metal) > Polyphenols > Two phenols bonded directly to the same carbon > Identical phenols > Preparing from a phenol and an aldehyde or ketone > Isopropylidene diphenol produced
Description:










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8436057 Anion exchange membrane May. 7, 2013
8436055 Modified acidic ion-exchange resin and method for preparing bisphenol May. 7, 2013
8426479 Modified ion exchange resin and process for producing bisphenols Apr. 23, 2013
8143456 Method of reducing methanol in recycle streams in bisphenol-A production process Mar. 27, 2012
8053609 Solid catalyst useful for converting an alkylene oxide to an alkylene glycol Nov. 8, 2011
8044248 Treatment of bisphenol-A residue streams Oct. 25, 2011
8039679 Bisphenol-A plant yield enhancement Oct. 18, 2011
7989666 Method for preparing bisphenol A Aug. 2, 2011
7968612 Modified ion exchange resin and process for producing bisphenols Jun. 28, 2011
7923586 Method for stabilizing a cation exchange resin prior to use as an acid catalyst and use of said stabilized cation exchange resin in a chemical process Apr. 12, 2011
7858830 Process for recovering phenol from a BPA waste stream Dec. 28, 2010
7820866 Process for the manufacture of polyphenols Oct. 26, 2010
RE41290 Process for purifying phenol-containing bisphenol A Apr. 27, 2010
7686958 Method for the production of a chemical reaction product with the aid of a fixed-bed reactor Mar. 30, 2010
7598424 Process for production of bisphenol A Oct. 6, 2009
7491855 Integrated process for the production of bisphenol A from cumene hydroperoxide Feb. 17, 2009
7227046 Method for making bisphenol A Jun. 5, 2007
7154010 Integrated process for the production of bisphenol A from cumene hydroperoxide Dec. 26, 2006
7132575 Process for the synthesis of bisphenol Nov. 7, 2006
7129382 Process for producing bisphenol A Oct. 31, 2006
7112702 Process for the synthesis of bisphenol Sep. 26, 2006
7112703 Production of bisphenol-A with reduced sulfur content Sep. 26, 2006
7109385 Process for producing phenol Sep. 19, 2006
7078573 Dewatering of circulatory flows in the production of bisphenol A Jul. 18, 2006
7049475 Organic compound decomposing method May. 23, 2006
6995294 Method for producing bisphenol catalysts and bisphenols Feb. 7, 2006
6992228 Method for producing bisphenol catalysts and bisphenols Jan. 31, 2006
6972345 Extraction of phenol-containing effluent streams Dec. 6, 2005
6960697 System and method of producing bisphenol-A (BPA) Nov. 1, 2005
6946581 Bisphenol compound composition having excellent thermal stability Sep. 20, 2005
6943273 Method for producing bisphenol-A Sep. 13, 2005
6939994 Process for the production of bisphenol-A Sep. 6, 2005
6933416 Process for the production of bisphenol-A Aug. 23, 2005
6906227 Bisphenol phenol adducts Jun. 14, 2005
6891073 Chemical reactor system and process May. 10, 2005
6884894 Method for producing bisphenol catalysts and bisphenols Apr. 26, 2005
6872860 Method for producing bisphenol catalysts and bisphenols Mar. 29, 2005
6872859 Process for the preparation of bisphenols with zeolites Mar. 29, 2005
6858759 Process for manufacture of bisphenols Feb. 22, 2005
6858758 Method for producing bisphenols Feb. 22, 2005
6828465 Method for producing bisphenols Dec. 7, 2004
6825386 Catalyst for bisphenol compound production and process for producing bisphenol compound with the catalyst Nov. 30, 2004
6806394 Economical purification of bisphenol A Oct. 19, 2004
6784324 Process for producing bisphenol A Aug. 31, 2004
6784228 Epoxy resin composition, cured article thereof, novel epoxy resin, novel phenol compound, and process for preparing the same Aug. 31, 2004
6774268 Substance mixture containing bisphenol A Aug. 10, 2004
6740784 Process for producing bisphenol A May. 25, 2004
6737551 Process for producing bisphenol A May. 18, 2004
6730816 High productivity bisphenol-A catalyst May. 4, 2004
6727394 Method for producing bisphenol A Apr. 27, 2004

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