公开(公告)号：EP0994929A4

公开(公告)日：2001-02-21

申请号：EP98933297

申请日：1998-07-09

申请人： GREAT LAKES CHEMICAL CORP

发明人： DEGROOT RICHARD J

IPC分类号： C11D7/26 ,  C11D7/28 ,  C11D7/30 ,  C11D7/50 ,  C23G5/02 ,  C23G5/028 ,  C09D9/00

CPC分类号： C11D7/261 ,  C11D7/263 ,  C11D7/264 ,  C11D7/28 ,  C11D7/505 ,  C11D7/5081 ,  C23G5/02825

摘要： This invention provides a solvent composition comprising 1-bromopropane and a decafluoropentane for use as a cleaning and degreasing solvent. Preferably the decafluoropentane consists essentially of 1,1,1,2,3,4,4,5,5,5-decafluoropentane. The solvent composition optionally includes stabilizers and co-solvents such as alcohols, ketones, ethers, acetals, nitroalkanes, epoxides and amines. Specific compositions of 1-bromopropane, 1,1,1,2,3,4,4,5,5,5-decafluoropentane and optional stabilizers provide azeotrope compositions that are particularly well suited as cleaning and degreasing solvents.

公开(公告)号：EP0996704A4

公开(公告)日：2002-01-02

申请号：EP98934375

申请日：1998-07-09

申请人： GREAT LAKES CHEMICAL CORP

发明人： DEGROOT RICHARD J

IPC分类号： C07C17/42 ,  C07C19/075 ,  C11D7/26 ,  C11D7/28 ,  C11D7/30 ,  C11D7/32 ,  C11D7/50 ,  C11D11/00 ,  C23G5/028

CPC分类号： C11D7/261 ,  C07C17/42 ,  C07C19/075 ,  C11D7/263 ,  C11D7/264 ,  C11D7/266 ,  C11D7/28 ,  C11D7/30 ,  C11D7/3227 ,  C11D7/5018 ,  C11D11/0029 ,  C23G5/028 ,  C23G5/02861

摘要： This invention provides a stabilized alkyl bromide based solvent system that is useful for cleaning and degreasing a wide variety of metal objects. The solvent is stabilized with a stabilizer system that includes a dialkyl carbonate such as dimethyl carbonate and optionally other stabilizers and/or acid scavengers to inhibit the metal induced decomposition of the alkyl bromide based solvent. The stabilized solvent is applied to metal articles by any known or conventional means to solvate and entrain greases, oils and other undesirable matter from the article's surface.

摘要翻译： 本发明提供了一种稳定的烷基溴基溶剂体系，其可用于清洗和脱脂各种各样的金属物体。 溶剂用包含碳酸二烷基酯如碳酸二甲酯和任选的其它稳定剂和/或酸清除剂的稳定剂体系稳定以抑制烷基溴基溶剂的金属诱导分解。 通过任何已知的或常规的手段将稳定的溶剂施加到金属制品上，以从制品表面溶解并夹带油脂，油和其它不希望的物质。

公开(公告)号：EP0971777A4

公开(公告)日：2000-04-26

申请号：EP98915298

申请日：1998-04-03

申请人： GREAT LAKES CHEMICAL CORP

发明人： DEGROOT RICHARD J ,  AYRES JAMES T ,  REINEKE KARL E

IPC分类号： B01D3/00 ,  B01D3/14 ,  B01D5/00 ,  C01B7/09 ,  C07C29/124 ,  C07C29/80 ,  C07C31/04 ,  C07C31/08 ,  C07C31/10 ,  B01D3/34 ,  C07C27/00 ,  C07C37/68

CPC分类号： C07C29/80 ,  B01D3/14 ,  B01D5/0063 ,  C01B7/093 ,  C07C31/04 ,  C07C31/08 ,  C07C31/10 ,  C07C31/12 ,  C07C31/125

摘要： The present invention provides processes for recovering alkanols from fluids comprising the alkanol and aqueous hydrobromic acid without forming excessive amounts of alkyl bromide. In certain aspects of the invention, there are provided distillation systems wherein a fluid comprising an alkanol and aqueous hydrobromic acid is introduced into a distillation column at a point between the bottom and the top of the column to thereby separate the alkanol and the hydrobromic acid without causing the production of significant amount of alkyl bromide.