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公开(公告)号:US5011979A
公开(公告)日:1991-04-30
申请号:US513219
申请日:1990-04-23
IPC分类号: C07C67/08 , C07C69/653
CPC分类号: C07C67/08 , C07C69/653
摘要: The invention relates to a process for preparing methacrylates of fluorinated alcohols, which consists in reacting said alcohols with an excess of methacrylic acid in the presence of phosphoric anhydride, which acts as a catalyst and absorbs the water which has formed. The process is applicable to primary, secondary and tertiary fluorinated alcohols and to alcohols and diols with perfluoroethereal chains.
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2.
公开(公告)号:US4801409A
公开(公告)日:1989-01-31
申请号:US93700
申请日:1987-09-08
IPC分类号: B01J27/12 , B01J27/00 , C07B61/00 , C07C20060101 , C07C67/00 , C07C71/00 , C07C201/00 , C07C301/00 , C07C303/22 , C07C309/78 , C07C309/80 , C07C309/82 , C07C143/70
CPC分类号: C07C71/00 , C07C309/00
摘要: Mono- and bis-hypofluorites respectively of formula: FO.sub.2 S--R.sub.f --CF.sub.2 OF and FOCF.sub.2 --R'.sub.f --CF.sub.2 OF wherein R.sub.f is perfluoroalkylene or perfluorochloroalkylene and R'.sub.f is a perfluoroalkylene or perfluorooxyalkylene, and process for preparing them, which is conducted continuously, at a temperature from 0.degree. to 60.degree. C. and comprises starting from the respective acyl fluorides ##STR1## by reaction of fluorine in the gas phase in the presence of a catalyst consisting of K, Rb, Cs or Ba fluoride, preferably supported on a metal material.
摘要翻译: 分子式为:FO2S-Rf-CF2OF和FOCF2-R'f-CF2OF的单 - 和二 - 次氟化物,其中Rf是全氟亚烷基或全氟氯亚烷基,R'f是全氟亚烷基或全氟代亚烷基,以及其连续进行的制备方法, 在0℃至60℃的温度下进行,并且包括由相应的酰基氟化物通过氟在气相中在由K,Rb,Cs或Ba氟化物组成的催化剂存在下反应而优选地载于 一种金属材料。
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公开(公告)号:US4844089A
公开(公告)日:1989-07-04
申请号:US153836
申请日:1988-01-14
申请人: Lamberto Roberti
发明人: Lamberto Roberti
CPC分类号: A61B5/154 , A61B5/15003 , A61B5/150496 , A61B5/150732 , A61M5/32 , A61B5/150389 , A61M2005/342
摘要: An improved needle for multiple vacuum blood sample devices, consisting in two opposed, coplanar needles connected by an oblique member and protected by a rigid sheath such that the relevant test tube holder is not coaxial to the needle to be introduced in the vein; the second needle is angled with respect to the geometrical axis of the test tube so that the outflowing blood strikes only against only the side wall of the test tube, and with the minimum angle of incidence.
摘要翻译: PCT No.PCT / IT87 / 00044 Sec。 371日期:1988年1月14日 102(e)日期1988年1月14日PCT提交1987年5月13日PCT公布。 公开号WO87 / 06813 日期:1987年11月19日。一种用于多个真空血液样品装置的改进的针头,由两个相对的共面针组成,该针由倾斜构件连接并由刚性护套保护,使得相关的试管保持器不与针同轴 静静地介绍; 第二针相对于试管的几何轴线成角度,使得流出的血液仅对抗试管的侧壁并且以最小的入射角射出。
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4.
公开(公告)号:US4442301A
公开(公告)日:1984-04-10
申请号:US278676
申请日:1981-06-29
IPC分类号: C07C69/743 , C07C67/30 , C07C67/317
CPC分类号: C07C67/30
摘要: A process for stereospecifically synthesizing lower alkyl esters of the cis-2,2-dimethyl-3-(.beta.-fluoro-.beta.-trifluoromethyl-vinyl)-cyclopropanecarboxylic acid.
摘要翻译: 一种立体选择性合成顺式-2,2-二甲基-3-(β-氟-β-三氟甲基 - 乙烯基) - 环丙烷羧酸的低级烷基酯的方法。
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