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公开(公告)号：US06676809B1
公开(公告)日：2004-01-13
申请号：US08967539
申请日：1997-11-12
IPC分类号： B01D336
摘要： Hydrogen fluoride is effectively removed from a mixture of hydrogen fluoride, dichloromethane, chlorofluoromethane and/or difluoromethane by distilling the mixture so that two-component azeotropic mixtures of hydrogen fluoride and dichloromethane, hydrogen fluoride and chlorofluoromethane and hydrogen fluoride and difluoromethane are removed, or by liquid-separating the mixture into an upper liquid phase rich in hydrogen fluoride and a lower liquid phase not rich in hydrogen fluoride before each liquid phase is distilled as described above.
摘要翻译： 通过蒸馏混合物从氟化氢，二氯甲烷，氯氟甲烷和/或二氟甲烷的混合物中有效地除去氟化氢，从而除去氟化氢和二氯甲烷，氟化氢和氯氟甲烷和氟化氢和二氟甲烷的双组分共沸混合物，或通过 如上所述，在每个液相被蒸馏之前，将混合物液体分离成富含氟化氢的上液相和不富含氟化氢的较低液相。
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公开(公告)号：US06311515B1
公开(公告)日：2001-11-06
申请号：US09593523
申请日：2000-06-14
IPC分类号： F25J300
摘要： Hydrogen fluoride is effectively removed from a mixture of hydrogen fluoride, dichloromethane, chlorofluoromethane and/or difluoromethane by distilling the mixture so that two-component azeotropic mixtures of hydrogen fluoride and dichloromethane, hydrogen fluoride and chlorofluoromethane and hydrogen fluoride and difluoromethane are removed, or by liquid-separating the mixture into an upper liquid phase rich in hydrogen fluoride and a lower liquid phase not rich in hydrogen fluoride before each liquid phase is distilled as described above.
摘要翻译： 通过蒸馏混合物从氟化氢，二氯甲烷，氯氟甲烷和/或二氟甲烷的混合物中有效地除去氟化氢，从而除去氟化氢和二氯甲烷，氟化氢和氯氟甲烷和氟化氢和二氟甲烷的双组分共沸混合物，或通过 如上所述，在每个液相被蒸馏之前，将混合物液体分离成富含氟化氢的上液相和不富含氟化氢的较低液相。
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3.发明授权Azeotropes of hydrogen fluoride with dichloromethane, difluoromethane and chlorofluoromethane 失效氟化氢与二氯甲烷，二氟甲烷和氯氟甲烷的共沸物
公开(公告)号：US5523015A
公开(公告)日：1996-06-04
申请号：US162010
申请日：1993-12-09
摘要： Hydrogen fluoride is effectively removed from a mixture of hydrogen fluoride, dichloromethane, chlorofluoromethane and/or difluoromethane by distilling the mixture so that two-component azeotropic mixtures of hydrogen fluoride and dichloromethane, hydrogen fluoride and chlorofluoromethane and hydrogen fluoride and difluoromethane are removed, or by liquid-separating the mixture into an upper liquid phase rich in hydrogen fluoride and a lower liquid phase not rich in hydrogen fluoride before each liquid phase is distilled as described above.
摘要翻译： PCT No.PCT / JP93 / 00455 Sec。 371日期1993年12月9日第 102（e）日期1993年12月9日PCT 1993年4月9日PCT公布。 出版物WO93 / 21140 日期为1993年10月28日。通过蒸馏混合物，氟化氢，二氯甲烷，氯氟甲烷和/或二氟甲烷的混合物中有效地除去了氟化氢，使得氟化氢和二氯甲烷，氟化氢和氯氟甲烷和氟化氢的双组分共沸混合物 如上所述，在每个液相被蒸馏之前，除去二氯甲烷，或将混合物液分离成富含氟化氢的上部液相和不富含氟化氢的较低液相。
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公开(公告)号：US5426251A
公开(公告)日：1995-06-20
申请号：US090077
申请日：1993-07-21
IPC分类号： B01J27/12 , B01J23/26 , C07B61/00 , C07C17/08 , C07C17/20 , C07C17/21 , C07C17/38 , C07C17/383 , C07C19/08 , C07C19/12
CPC分类号： C07C17/21 , C07C17/206 , C07C17/383
摘要： A process for preparing 1,1,1-trifluoro-2-chloroethane and/or 1,1,1,2-tetrafluoroethane, comprising the steps of reacting trichloroethylene and/or 1,1,1-trifluoro-2-chloroethane with hydrogen fluoride in the presence of a fluorinating catalyst in a gas pase, separating 1,1,1-trifluoro-2-chloroethane, hydrogen fluoride, and optionally trichloroethylene, from the reaction mixture obtained by the above reaction which contains 1,1,1-trifluoro-2-chloroethane, 1,1,1,2-tetrafluoroethane, hydrogen fluoride, and optionally trichloroethylene, and recycling them to the reaction step above, characterized in that at least a part of the reaction mixture is distilled in a distillation tower, 1,1,1,2-tetrafluoroethane-rich components are discharged from the top of the tower, and a mixture of 1,1,1-trifluoro-2-chloroethane and hydrogen fluoride, and optionally trichloroethylene, is discharged in the form of gas from the middle part of the tower at a temperature which is above the boiling point of the azeotropic mixture of 1,1,1-trifluoro-2-choroethane and hydrogen fluoride and at least 5.degree. C. below the boiling point of anhydrous hydrogen fluoride under the internal pressure in the distillation tower and returned to the reaction step.The discharging at the middle part of the tower provides a recycling gas in high purity, while leaving higher-boiling substances such as water, tar, etc. on the bottom of the tower. The gas can be used for the reaction system as a recycling gas, which can eliminate a process of vaporizing high-boiling mixture which is conventionally discharged at the bottom of the tower by means of a vaporizer and the like and reduce the equipment cost significantly.
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5.发明授权Azeotropic mixture of hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane and process for purification of 1,1,1-trifluoro-2-chloroethane 失效氟化氢和1,1,1-三氟-2-氯乙烷的共沸混合物和1,1,1-三氟-2-氯乙烷的纯化方法
公开(公告)号：US5324873A
公开(公告)日：1994-06-28
申请号：US17258
申请日：1993-02-12
摘要： Hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane forms an azeotropic mixture. A mixture comprising hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane is phase separated when it is cooled to a temperature below 7.degree. C. 1,1,1-Trifluoro-2-chloroethane is purified effectively from the mixture by cooling the mixture to form an upper liquid phase and a lower liquid phase and distilling the lower liquid phase so that the hydrogen fluoride is removed as an azeotropic distillate and 1,1,1-trifluoro-2-chloroethane substantially free from hydrogen fluoride is obtained as a bottom product.
摘要翻译： 氟化氢和1,1,1-三氟-2-氯乙烷形成共沸混合物。 当将其冷却至低于7℃的温度时，包含氟化氢和1,1,1-三氟-2-氯乙烷的混合物相分离。将1,1,1-三氟-2-氯乙烷通过 冷却混合物以形成上液相和下液相并蒸馏下液相，从而除去作为共沸馏出物的氟化氢，得到基本上不含氟化氢的1,1,1-三氟-2-氯乙烷 作为底部产品。
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6.发明授权Azeotropic mixture of hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane 失效氟化氢和1,1,1-三氟-2-氯乙烷的共沸混合物
公开(公告)号：US5401430A
公开(公告)日：1995-03-28
申请号：US136885
申请日：1993-10-18
摘要： Hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane forms an azeotropic mixture of which molar ratio of HF/1,1,1-trifluoro-2-chloroethane varies, for example, from about 60/40 at a pressure of 1.5 Kg/cm.sup.2 G and a temperature of 20.degree. C. to about 45/55 at a pressure of 15 Kg/cm.sup.2 G and a temperature of 87.degree.C.
摘要翻译： 氟化氢和1,1,1-三氟-2-氯乙烷形成共沸混合物，其中HF / 1,1,1-三氟-2-氯乙烷的摩尔比例如在约60/40的压力下变化， 1.5Kg / cm2G，温度为20℃至约45/55，压力为15Kg / cm2G，温度为87℃。
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7.发明授权Azeotropic mixture of 1,1-difluoroethane and hydrogen fluoride and production process of 1,1-difluoroethane 失效1,1-二氟乙烷与氟化氢的共沸混合物及1,1-二氟乙烷的生产工艺
公开(公告)号：US5846388A
公开(公告)日：1998-12-08
申请号：US525790
申请日：1995-09-29
申请人： Takehide Tsuda , Satoshi Komatsu
发明人： Takehide Tsuda , Satoshi Komatsu
IPC分类号： C01B7/19 , C07C17/38 , C07C17/383 , C07C17/386 , C07C19/08 , B01D3/36
CPC分类号： C07C19/08 , C01B7/196 , C07C17/38 , C07C17/383
摘要： There is provided an azeotropic mixture of hydrogen fluoride (HF) and 1,1-difluoroethane (HFC152a). In addition, there is provided a process for the production of HFC152a having a step of more effectively recovering HF which does not contain HFC152a or HFC152a which does not contain HF in which step an azeotropic mixture is distilled off from a column top by subjecting a mixture containing HFC152a and HF, so that HF which does not contain HFC152a or HFC152a which does not contain HF is recovered from a column bottom.
摘要翻译： PCT No.PCT / JP94 / 00558 Sec。 371 1995年9月29日第 102（e）1995年9月29日PCT PCT 1994年4月5日PCT公布。 公开号WO94 / 22796 日期1994年10月13日提供了氟化氢（HF）和1,1-二氟乙烷（HFC152a）的共沸混合物。 此外，提供了一种制备HFC152a的方法，其具有更有效地回收不含不含HF的HFC152a或HFC152a的HF的步骤，其中通过使混合物从塔顶馏出共沸混合物的步骤 含有HFC152a和HF，使得不含有HF15的HFC152a或HFC152a的HF从塔底回收。
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公开(公告)号：US06716942B1
公开(公告)日：2004-04-06
申请号：US09913152
申请日：2001-08-10
申请人： Hideya Saito , Tetsuya Higuchi , Satoshi Komatsu , Satoshi Koyama
发明人： Hideya Saito , Tetsuya Higuchi , Satoshi Komatsu , Satoshi Koyama
IPC分类号： C08F11418
CPC分类号： C08F214/28 , B01J3/008 , C08F2/38 , C08F14/18 , C08F214/18 , C08K5/14 , Y02P20/544 , C08L27/12
摘要： A process for preparing a fluoropolymer by polymerizing one or more radically polymerizable monomers comprising at least one fluoroolefin monomer in the presence of a radical polymerization initiator and as case demands, an inactive fluorocarbon and chain transfer agent in a reaction field where at least one of components forming the reaction field is in a supercritical state. According to the preparation process, generation of unstable end groups of the polymer, a decrease in a purity and complicated post-treatment can be eliminated.
摘要翻译： 一种通过在自由基聚合引发剂的存在下聚合一种或多种包含至少一种氟代烯烃单体的可自由基聚合的单体并根据需要在反应领域中使用无活性氟代烃和链转移剂来制备含氟聚合物的方法，其中至少一种组分 形成反应场处于超临界状态。 根据制备方法，可以消除聚合物不稳定端基的产生，纯度降低和后处理复杂。
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公开(公告)号：US06870018B1
公开(公告)日：2005-03-22
申请号：US10129544
申请日：2000-11-07
IPC分类号： C08F2/00 , C08F2/16 , C08F14/22 , C08F214/18 , C08F214/22 , C08K5/00 , C08K5/13 , C08K5/14 , C08K5/17 , C08L27/16
CPC分类号： C08F214/22 , C08F214/18 , C08K5/0025 , C08L27/12
摘要： A vulcanizable fluorine-containing elastomer composition having excellent stability in molding and kneading property, from which a vulcanized article having a small compression set can be produced in a short period of time. The vulcanizable fluorine-containing elastomer composition comprises a vulcanization agent, a vulcanization aid and a fluorine-containing elastomer having C—H bond in its polymer chain, and an optimum vulcanization time T90 (min) of the composition and a compression set CS (%) of the vulcanized article satisfy the following equations (I) and (II): Equation (I): in case of 50,000≦MW≦200,000, CS≦−3.45 Ln(T90)+22.8−4×10−5×MW Equation (II): in case of 200,000
摘要翻译： 可以在短时间内制造具有优异的成型和捏合性能稳定性的可硫化的含氟弹性体组合物，从而可以制造具有小压缩永久变形的硫化制品。 可硫化的含氟弹性体组合物包含硫化剂，硫化助剂和在其聚合物链中具有CH键的含氟弹性体，组合物的最佳硫化时间T 90（min）和压缩永久变形系数CS（％） 硫化制品满足下列等式（I）和（II）：等式（I）：在50,000 <= MW＆LE; 200,000的情况下，等式（II）：在20万
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10.发明授权
公开(公告)号：US5849963A
公开(公告)日：1998-12-15
申请号：US656229
申请日：1996-06-07
IPC分类号： C07C17/20 , C07C17/21 , C07C19/08 , C07C17/158 , C07C17/06
CPC分类号： C07C19/08 , C07C17/206 , C07C17/21
摘要： According to the method for producing difluoromethane and 1,1,1,2-tetrafluoroethane, having the steps of: (1) reacting methylene chloride and 1,1,2-trichloroethylene with hydrogen fluoride in a vapor phase In the presence of a fluorinating catalyst and 1,1,1,2-tetrafluoroethane in a first reactor; and (2) reacting 1,1,1-trifluorochloroethane with hydrogen fluoride in a vapor phase in the presence of a fluorinating catalyst in a second reactor, and supplying the reaction mixture from the second reactor to the first reactor, HFC-32 can be obtained in high conversion and high selectivity by fluorinating HCC-30 using commonly a large (excess) amount of HF which is required for producing HFC-134a.
摘要翻译： PCT No.PCT / JP94 / 02070 Sec。 371日期1996年6月7日第 102（e）日期1996年6月7日PCT 1994年12月9日PCT PCT。 公开号WO95 / 15937 日期：1995年6月15日根据生产二氟甲烷和1,1,1,2-四氟乙烷的方法，具有以下步骤：（1）使二氯甲烷和1,1,2-三氯乙烯与氟化氢在气相In 在第一反应器中存在氟化催化剂和1,1,1,2-四氟乙烷; 和（2）在第二反应器中，在氟化催化剂存在下，在气相中使1,1,1-三氟氯乙烷与氟化氢反应，并将反应混合物从第二反应器供应到第一反应器，HFC-32可以 通过使用通常产生HFC-134a所需的大量（过量）的HF来氟化HCC-30而以高转化率和高选择性获得。
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