-
公开(公告)号:US09156919B2
公开(公告)日:2015-10-13
申请号:US14131556
申请日:2012-07-17
申请人: Richard A. Engelman , David W. Ziettlow , Robert E. Scheid, Jr. , Charles B. Mallon , Matthias Sprehe , Andrew C. Arthur
发明人: Richard A. Engelman , David W. Ziettlow , Robert E. Scheid, Jr. , Charles B. Mallon , Matthias Sprehe , Andrew C. Arthur
摘要: In a method of removing alkylene halogenohydrin from a cellulose ether the cellulose ether is provided, water is added to the cellulose ether and subsequently alkylene halogenohydrin and water is removed from the cellulose ether by evaporation. Alternatively steam or a steam mixture can be sparged across or through the cellulose ether to remove halogenohydrin from the cellulose ether.
摘要翻译: 在从纤维素醚中除去亚烷基卤代醇的方法中,提供纤维素醚,向纤维素醚中加入水,随后通过蒸发从纤维素醚中除去亚烷基卤代醇。 或者蒸汽或蒸汽混合物可以穿过或穿过纤维素醚,以从纤维素醚中除去卤代醇。
-
公开(公告)号:US20140148591A1
公开(公告)日:2014-05-29
申请号:US14131556
申请日:2012-07-17
申请人: Richard A Engleman , David W. Ziettlow , Robert E. Scheid, JR. , Charles B. Mallon , Matthias Sprehe , Andrew C. Arthur
发明人: Richard A Engleman , David W. Ziettlow , Robert E. Scheid, JR. , Charles B. Mallon , Matthias Sprehe , Andrew C. Arthur
IPC分类号: C08B11/20
摘要: In a method of removing alkylene halogenohydrin from a cellulose ether the cellulose ether is provided, water is added to the cellulose ether and subsequently alkylene halogenohydrin and water is removed from the cellulose ether by evaporation. Alternatively steam or a steam mixture can be sparged across or through the cellulose ether to remove halogenohydrin from the cellulose ether.
摘要翻译: 在从纤维素醚中除去亚烷基卤代醇的方法中,提供纤维素醚,向纤维素醚中加入水,随后通过蒸发从纤维素醚中除去亚烷基卤代醇。 或者蒸汽或蒸汽混合物可以穿过或穿过纤维素醚,以从纤维素醚中除去卤代醇。
-
公开(公告)号:US4742175A
公开(公告)日:1988-05-03
申请号:US68752
申请日:1987-06-30
IPC分类号: C07C7/06 , C07C211/22 , C07D211/22 , C30B7/08
CPC分类号: C07D211/22
摘要: Polymorphically pure terfenadine, 1-(p-tert-butylphenyl)-4-[4'-(.alpha.-hydroxydiphenylmethyl)-1'-piperidinyl]-butanol, is prepared by carefully controlled recrystallization methods.
摘要翻译: 通过仔细控制的重结晶方法制备多晶型纯的特非那定1-(对叔丁基苯基)-4- [4' - (α-羟基二苯基甲基)-1'-哌啶基] - 丁醇。
-
-