http://www.freshpatents.com/Organic-compounds----part-of-the-class-532--series-dtnewntc570.php USPTO Class 570 - Organic compounds -- part of the class 532- series en-us Thu, 3 Jul 2008 14:29:51 -0700 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/Production-vessel-mixtures-dt20080626ptan20080154072.php Thu, 3 Jul 2008 14:29:51 -0700 Methods and materials are provided for the production and purification of halogenated compounds and intermediates in the production of 1,1,1,3,3-pentafluoropropane. In a preferred embodiment, the process steps include: (1) reacting carbon tetrachloride with vinyl chloride to produce 1,1,1,3,3-pentachloropropane; (2) dehydrochlorinating the 1,1,1,3,3-pentachloropropane with a Lewis acid catalyst to produce 1,1,3,3-tetrachloropropene;...