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公开(公告)号：US5785822A
公开(公告)日：1998-07-28
申请号：US652891
申请日：1996-05-23
IPC分类号： C07C17/20 , C07C17/23 , C07C17/383 , C07C17/386 , B01D3/34
CPC分类号： C07C17/383 , C07C17/206 , C07C17/23 , C07C17/386
摘要： The present invention provides a method for separating dichlorodifluoromethane from difluoromethane. More specifically, a process is provided for separating dichlorodifluoromethane and difluoromethane using azeotropic distillation.
摘要翻译： 本发明提供了从二氟甲烷中分离二氯二氟甲烷的方法。 更具体地，提供了使用共沸蒸馏分离二氯二氟甲烷和二氟甲烷的方法。
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公开(公告)号：US06355113B1
公开(公告)日：2002-03-12
申请号：US09186932
申请日：1998-11-06
申请人： David Nalewajek , Rajat Subhra Basu , David Paul Wilson , Michael Van Der Puy , Ellen Louise Swan , Peter Brian Logsdon , Gary J. Zyhowski , Hepburn Ingham , Daniel Franklin Harnish , Joel Edward Rodgers
发明人： David Nalewajek , Rajat Subhra Basu , David Paul Wilson , Michael Van Der Puy , Ellen Louise Swan , Peter Brian Logsdon , Gary J. Zyhowski , Hepburn Ingham , Daniel Franklin Harnish , Joel Edward Rodgers
IPC分类号： B08B308
CPC分类号： C11D7/5018 , C11D7/24 , C11D7/28 , C23G5/02 , C23G5/024 , H05K3/26 , H05K2203/0766 , H05K2203/0783 , H05K2203/1518
摘要： A non-aqueous cleaning process uses an organic solvent for removing soil or surface contamination from contaminated articles such as printed circuit boards which are cleaned by immersion into a sump compartment of a cleaning tank containing the organic cleaning solvent. The organic solvent is preferably a hydrocarbon solvent. The cleaned articles, now coated with the organic cleaning solvent, are then disposed in a rinsing sump containing a fluorocarbon based rinsing solvent having an affinity for the organic cleaning solvent. The organic solvent is thus removed from the articles which are then dried without waste water as in a conventional solvent vapor degreasing solvent process.
摘要翻译： 非水清洗方法使用有机溶剂去除被污染物品（例如印刷电路板）污染的土壤或表面污染物，其通过浸入含有有机清洗溶剂的清洗槽的贮槽室中清洗。 有机溶剂优选为烃溶剂。 然后将现在涂覆有机清洁溶剂的清洁物品置于含有对有机清洁溶剂具有亲和性的基于碳氟化合物的漂洗溶剂的漂洗池中。 因此，有机溶剂从制品中除去，然后如常规溶剂蒸汽脱脂溶剂法那样无需废水干燥。
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公开(公告)号：US5696307A
公开(公告)日：1997-12-09
申请号：US184810
申请日：1994-01-21
CPC分类号： C07C19/08 , C11D7/5018 , C23G5/02803
摘要： Hydrofluoroalkanes useful as solvents, especially for vapor degreasing and solvent cleaning, are one or many of the following formulae: CHF.sub.2 --X--(CHF).sub.n --X--Y wherein X is selected from the group consisting of CHF, CF.sub.2 and CH.sub.2, Y is CH.sub.3, and n is 0, 1 or 2.
摘要翻译： 可用作溶剂，特别是用于蒸气脱脂和溶剂清洗的溶剂的氢氟烷烃是下列一种或多种：CHF 2 -X-（CHF）n X-Y，其中X选自CHF，CF 2和CH 2，Y是CH 3， n为0,1或2。
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公开(公告)号：US20120003138A1
公开(公告)日：2012-01-05
申请号：US13097836
申请日：2011-04-29
CPC分类号： C01B25/10 , C01B7/191 , C01D15/005
摘要： Provided are azeotropic and azeotrope-like compositions of PF5 and HF, and methods of making such compositions. Such azeotropic and azeotrope-like compositions can be used, for example, in processes for producing LiPF6.
摘要翻译： 提供了PF5和HF的共沸和类共沸组合物，以及制备这种组合物的方法。 这种共沸和类共沸组合物可用于例如生产LiPF 6的方法中。
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