Method for preparing 2,3,3,3-tetrafluoro-1-propene
    31.
    发明授权
    Method for preparing 2,3,3,3-tetrafluoro-1-propene 有权
    制备2,3,3,3-四氟-1-丙烯的方法

    公开(公告)号:US08329964B2

    公开(公告)日:2012-12-11

    申请号:US12665140

    申请日:2009-03-27

    Abstract: The invention relates to a gas-phase continuous method for preparing 2,3,3,3-tetrafluoro-1-propene, said method comprising the following steps: (i) hydrogenation of hexafluoropropylene to form 1,1,1,2,3,3-hexafluoropropane; (ii) dehydrofluorination of the 1,1,1,2,3,3-hexafluoropropane obtained in the previous step to 1,2,3,3,3-pentafluoropropene-1; (iii) hydrogenation of the 1,2,3,3,3-pentafluoropropene-1 obtained in the previous step to form 1,1,1,2,3-pentafluoropropane; and (iv) dehydrofluorination of the 1,1,1,2,3-pentafluoropropane obtained in the previous step to form 2,3,3,3-tetrafluoro-1-propene.

    Abstract translation: 本发明涉及一种制备2,3,3,3-四氟-1-丙烯的气相连续方法,所述方法包括以下步骤:(i)六氟丙烯的氢化形成1,1,1,2,3 ,3-六氟丙烷; (ii)将上一步获得的1,1,1,2,3,3-六氟丙烷的脱氟化氢化为1,2,3,3,3-五氟丙烯-1; (iii)在前一步骤中获得的1,2,3,3,3-五氟丙烯-1的氢化形成1,1,1,2,3-五氟丙烷; 和(iv)前一步骤中获得的1,1,1,2,3-五氟丙烷的脱氟化氢,形成2,3,3,3-四氟-1-丙烯。

    Process for the purification of 2,3,3,3-tetrafluoro-1-propene (HFO-1234yf)
    32.
    发明授权
    Process for the purification of 2,3,3,3-tetrafluoro-1-propene (HFO-1234yf) 有权
    纯化2,3,3,3-四氟-1-丙烯(HFO-1234yf)的方法

    公开(公告)号:US08252964B2

    公开(公告)日:2012-08-28

    申请号:US13001663

    申请日:2009-06-08

    CPC classification number: C07C17/389 C07C21/18

    Abstract: The subject of the invention is a process for the purification of 2,3,3,3-tetrafluoro-1-propene (HFO-1234yf). More particularly, it relates to a purification process in which 2,3,3,3-tetrafluoro-1-propene, comprising impurities based on halogen compounds, is brought into contact with an adsorbent, preferably molecular sieves and advantageously molecular sieves having a pore opening with an average diameter between 5 and 11 Å, preferably between 5 and 9 Å.

    Abstract translation: 本发明的主题是用于纯化2,3,3,3-四氟-1-丙烯(HFO-1234yf)的方法。 更具体地说,本发明涉及一种纯化方法,其中将包含基于卤素化合物的杂质的2,3,3,3-四氟-1-丙烯与吸附剂,优选分子筛和有利的分子筛接触,所述分子筛具有孔 平均直径在5和11埃之间,优选在5和9之间。

    PROCESS FOR THE PURIFICATION OF 2,3,3,3-TETRAFLUORO-1-PROPENE (HFO-1234YF)
    33.
    发明申请
    PROCESS FOR THE PURIFICATION OF 2,3,3,3-TETRAFLUORO-1-PROPENE (HFO-1234YF) 有权
    2,3,3,3-四氢-1-丙烯(HFO-1234YF)的纯化方法

    公开(公告)号:US20110105809A1

    公开(公告)日:2011-05-05

    申请号:US13001663

    申请日:2009-06-08

    CPC classification number: C07C17/389 C07C21/18

    Abstract: The subject of the invention is a process for the purification of 2,3,3,3-tetrafluoro-1-propene (HFO-1234yf). More particularly, it relates to a purification process in which 2,3,3,3-tetrafluoro-1-propene, comprising impurities based on halogen compounds, is brought into contact with an adsorbent, preferably molecular sieves and advantageously molecular sieves having a pore opening with an average diameter between 5 and 11 Å, preferably between 5 and 9 Å.

    Abstract translation: 本发明的主题是用于纯化2,3,3,3-四氟-1-丙烯(HFO-1234yf)的方法。 更具体地说,本发明涉及一种纯化方法,其中将包含基于卤素化合物的杂质的2,3,3,3-四氟-1-丙烯与吸附剂,优选分子筛和有利的分子筛接触,所述分子筛具有孔 平均直径在5和11埃之间,优选在5和9之间。

    METHOD FOR PRODUCING HYDROFLUOROCARBONS
    34.
    发明申请
    METHOD FOR PRODUCING HYDROFLUOROCARBONS 审中-公开
    生产氢氟烃的方法

    公开(公告)号:US20090270659A1

    公开(公告)日:2009-10-29

    申请号:US12302659

    申请日:2007-05-09

    Abstract: The invention relates to a method for producing hydrofluorocarbons. The method comprises a step of reacting at least one hydro(fluoro)chlorocarbon or chlorocarbon with hydrofluoric acid in a gaseous phase in the presence of a catalyst, and a step of separating fluorination reaction products from the mixture. The method is characterized in that the gaseous flow from the reaction is compressed by means of a compressor before being subjected to the separation step. The invention also relates to a device for implementing the method.

    Abstract translation: 本发明涉及一种生产氢氟烃的方法。 该方法包括在催化剂存在下使气态中至少一种氢(氟)氯化碳或氯代烃与氢氟酸反应的步骤和从混合物中分离氟化反应产物的步骤。 该方法的特征在于,在进行分离步骤之前,来自反应的气流通过压缩机被压缩。 本发明还涉及一种用于实现该方法的装置。

    Process for the preparation of delignified and bleached chemical paper
pulps
    37.
    发明授权
    Process for the preparation of delignified and bleached chemical paper pulps 失效
    制备脱木素和漂白化学纸浆的方法

    公开(公告)号:US6019870A

    公开(公告)日:2000-02-01

    申请号:US737684

    申请日:1997-01-17

    CPC classification number: D21C9/1026 D21C9/1042 D21C9/163

    Abstract: A process of dignifying lignocellulosic pulp with oxygen followed by treatment of the delignified pulp with a chelating agent, followed by washing, followed by treatment with hydrogen peroxide at an alkaline pH in the presence of an alkali metal silicate at a temperature greater than 100.degree. C. and a pressure greater than 1.5 times the saturated vapor pressure.

    Abstract translation: PCT No.PCT / FR95 / 00494 Sec。 371日期1997年1月17日 102(e)日期1997年1月17日PCT提交1995年4月14日PCT公布。 出版物WO95 / 31599 日期1995年11月23日一种使木质纤维素纸浆氧化的方法,然后用螯合剂处理脱木素纸浆,然后洗涤,随后在碱性pH下在碱金属硅酸盐存在下用过氧化氢处理温度 大于100℃,压力大于饱和蒸汽压力的1.5倍。

    Two-step bleaching of plant materials
    38.
    发明授权
    Two-step bleaching of plant materials 失效
    植物材料的两步漂白

    公开(公告)号:US5219601A

    公开(公告)日:1993-06-15

    申请号:US850127

    申请日:1992-03-12

    Applicant: Michel Devic

    Inventor: Michel Devic

    CPC classification number: A23L5/49

    Abstract: A variety of plant materials adopted for processing into, e.g., low-calorie vegetable fibers and dietary flours, are bleached by (1) prebleaching such plant material in a first aqueous solution containing an alkaline agent and hydrogen peroxide, the alkaline agent being present in solution in such amount that the final pH of the resulting suspension is no greater than 9, (2) filtering and washing the suspension produced in step (1) with water, to an effectiveness of at least 50%, (3) bleaching the material obtained after step (2) in a second aqueous solution containing an alkaline agent and hydrogen peroxide, the alkaline agent being present in solution in such amount that the final pH of the resulting suspension is no greater than 8.5, and, characteristically, (4) filtering and washing the suspension produced in step (3) with water.

    Abstract translation: 用于加工成例如低卡路里植物纤维和膳食面粉的各种植物材料通过(1)将这种植物材料预漂白在含有碱性试剂和过氧化氢的第一水溶液中而漂白,碱性试剂存在于 溶液的量使所得悬浮液的最终pH不大于9,(2)用水过滤和洗涤步骤(1)中产生的悬浮液,有效性至少为50%,(3)漂白材料 在步骤(2)之后在含有碱性试剂和过氧化氢的第二水溶液中获得的碱性试剂以使所得悬浮液的最终pH不大于8.5的量存在于溶液中,特征在于(4) 用水过滤和洗涤步骤(3)中产生的悬浮液。

    Process of decomposition of a complex of ortho-benzoyl benzoic acid,
hydrogen fluoride and boron trifluoride
    39.
    发明授权
    Process of decomposition of a complex of ortho-benzoyl benzoic acid, hydrogen fluoride and boron trifluoride 失效
    邻苯甲酰苯甲酸,氟化氢和三氟化硼的络合物的分解过程

    公开(公告)号:US4496760A

    公开(公告)日:1985-01-29

    申请号:US523945

    申请日:1983-08-17

    Applicant: Michel Devic

    Inventor: Michel Devic

    CPC classification number: C07C51/44 C07C51/487

    Abstract: A process for the decomposition of complexes of ortho-benzoyl benzoic acids, hydrogen fluoride, and boron trifluoride, whether or not the ortho-benzoyl benzoic acid is substituted, is disclosed wherein the ortho-benzoyl benzoic acid is obtained separately from the hydrogen fluoride and boron trifluoride. This process is characterized in that the complex is treated with an inert solvent at a temperature of at least 20.degree. C., in a distillation column having at least about 8 theoretical plates whereby the solvent reflux is operated at a rate equal to about 5 to about 40 times the weight of the feed delivery rate of the column.The process of the present invention also makes it possible to recover hydrogen fluoride and boron trifluoride for reuse as catalysts in the synthesis of ortho-benzoyl benzoic acid without causing decomposition of the acid.

    Abstract translation: 公开了分离邻苯甲酰苯甲酸,氟化氢和三氟化硼的络合物的方法,无论邻苯甲酰苯甲酸是否被取代,其中邻苯甲酰苯甲酸分别从氟化氢和 三氟化硼。 该方法的特征在于,在至少20℃的温度下,在具有至少约8理论塔板的蒸馏塔中用惰性溶剂处理络合物,由此溶剂回流以等于约5至 是柱的饲料输送速率的约40倍。 本发明的方法还可以在不引起酸分解的情况下回收氟化氢和三氟化硼作为合成邻苯甲酰苯甲酸的催化剂。

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