Crystals of [S,S]-ethylenediamine-N,N′-disuccinic acid with high bulk density and method of obtaining the same
    1.
    发明授权
    Crystals of [S,S]-ethylenediamine-N,N′-disuccinic acid with high bulk density and method of obtaining the same 有权
    具有高堆积密度的[S,S] - 乙二胺-N,N'-二琥珀酸的晶体和获得相同的方法

    公开(公告)号:US06414189B1

    公开(公告)日:2002-07-02

    申请号:US09530964

    申请日:2000-05-18

    IPC分类号: C07C22900

    CPC分类号: C07C229/24 C07C227/42

    摘要: Crystals of [S,S]-ethylenediamine-N,N′-disuccinic acid which have a bulk density of 0.45 to 1.2 g/cm3, and a process for obtaining these crystals comprising the steps of adjusting an aqueous solution of an [S,S]-ethylenediamine-N,N′-disuccinic acid metal salt to a temperature of 40 to 80° C. and a pH of 1.9 to 4.5, and cooling the solution to a temperature below 40° C. over a period of 0.2 to 10 hours while supplying a mineral acid so as to maintain the pH at 1.9 to 4.5 to precipitate [S,S]-ethylenediamine-N,N′-disuccinic acid in a high yield.

    摘要翻译: 具有堆积密度为0.45〜1.2g / cm 3的[S,S] - 乙二胺-N,N'-二琥珀酸的晶体以及获得这些结晶的方法,包括以下步骤:将[S, S] - 乙二胺-N,N'-二琥珀酸金属盐,温度为40〜80℃,pH为1.9〜4.5,在0.2〜 10小时,同时供给无机酸,以保持pH为1.9〜4.5,以高收率沉淀出[S,S] - 乙二胺-N,N'-二琥珀酸。

    [S,S]-ethylenediamine-N,N′-disuccinic acid crystal with high bulk density and process for obtaining the same
    3.
    发明授权
    [S,S]-ethylenediamine-N,N′-disuccinic acid crystal with high bulk density and process for obtaining the same 有权
    具有高堆积密度的[S,S] - 乙二胺-N,N'-二琥珀酸晶体及其制备方法

    公开(公告)号:US06495716B2

    公开(公告)日:2002-12-17

    申请号:US10083536

    申请日:2002-02-27

    IPC分类号: C07C22900

    CPC分类号: C07C229/24 C07C227/42

    摘要: Crystals of [S,S]-ethylenediamine-N,N′-disuccinic acid which have a bulk density of 0.45 to 1.2 g/cm3, and a process for obtaining these crystals comprising the steps of adjusting an aqueous solution of an [S,S]-ethylenediamine-N,N′-disuccinic acid metal salt to a temperature of 40 to 80° C. and a pH of 1.9 to 4.5, and cooling the solution to a temperature below 40° C. over a period of 0.2 to 10 hours while supplying a mineral acid so as to maintain the pH at 1.9 to 4.5 to precipitate [S,S]-ethylenediamine-N,N′-disuccinic acid in a high yield.

    摘要翻译: 具有堆积密度为0.45〜1.2g / cm 3的[S,S] - 乙二胺-N,N'-二琥珀酸的晶体以及获得这些结晶的方法,包括以下步骤:将[S, S] - 乙二胺-N,N'-二琥珀酸金属盐,温度为40〜80℃,pH为1.9〜4.5,在0.2〜 10小时,同时供给无机酸,以保持pH为1.9〜4.5,以高收率沉淀出[S,S] - 乙二胺-N,N'-二琥珀酸。

    METHOD FOR EXTRACTING METHACRYLIC ACID
    4.
    发明申请
    METHOD FOR EXTRACTING METHACRYLIC ACID 有权
    提取甲基丙烯酸的方法

    公开(公告)号:US20100228053A1

    公开(公告)日:2010-09-09

    申请号:US12159318

    申请日:2006-12-26

    IPC分类号: C07C51/48

    CPC分类号: C07C51/48 C07C57/04

    摘要: Disclosed is a method for extracting methacrylic acid, in which an extraction solvent is added to a methacrylic acid aqueous solution for transferring methacrylic acid to the extraction solvent. In this method, a solvent containing t-butyl methacrylate is used as the extraction solvent.

    摘要翻译: 公开了一种提取甲基丙烯酸的方法,其中将提取溶剂加入甲基丙烯酸水溶液中以将甲基丙烯酸转移到萃取溶剂中。 在该方法中,使用含有甲基丙烯酸叔丁酯的溶剂作为萃取溶剂。

    Method for extracting methacrylic acid
    5.
    发明授权
    Method for extracting methacrylic acid 有权
    甲基丙烯酸的提取方法

    公开(公告)号:US07897814B2

    公开(公告)日:2011-03-01

    申请号:US12159318

    申请日:2006-12-26

    IPC分类号: C07C51/42

    CPC分类号: C07C51/48 C07C57/04

    摘要: Disclosed is a method for extracting methacrylic acid, in which an extraction solvent is added to a methacrylic acid aqueous solution for transferring methacrylic acid to the extraction solvent. In this method, a solvent containing t-butyl methacrylate is used as the extraction solvent.

    摘要翻译: 公开了一种提取甲基丙烯酸的方法,其中将提取溶剂加入甲基丙烯酸水溶液中以将甲基丙烯酸转移到萃取溶剂中。 在该方法中,使用含有甲基丙烯酸叔丁酯的溶剂作为萃取溶剂。

    Method for producing tertiary butyl alcohol
    6.
    发明授权
    Method for producing tertiary butyl alcohol 有权
    叔丁醇生产方法

    公开(公告)号:US07709690B2

    公开(公告)日:2010-05-04

    申请号:US11721742

    申请日:2005-12-15

    IPC分类号: C07C29/04

    CPC分类号: C07C29/04 C07C31/12

    摘要: Disclosed is a method for producing tertiary butyl alcohol through hydration reaction of isobutylene and water in the presence of a cation exchange resin by using a reactor having at least two reactor vessels provided in series. The method is characterized in that a fluid in a reactor vessel at the most downstream side forms a two-liquid phase and the reaction temperature of the reactor vessel is kept at 70° C. or lower, and a fluid in at least one reactor vessel other than the one at the most downstream side forms a homogeneous phase.

    摘要翻译: 公开了通过使用具有串联提供的至少两个反应器容器的反应器,在阳离子交换树脂存在下,通过异丁烯和水的水合反应生产叔丁醇的方法。 该方法的特征在于,最下游侧的反应器容器中的流体形成双液相,反应容器的反应温度保持在70℃以下,在至少一个反应器容器 除了最下游侧的那一个形成均相。

    Torsional vibration monitoring apparatus for a rotating shaft system
    7.
    发明授权
    Torsional vibration monitoring apparatus for a rotating shaft system 失效
    用于旋转轴系的扭转振动监测装置

    公开(公告)号:US4255978A

    公开(公告)日:1981-03-17

    申请号:US36020

    申请日:1979-05-04

    IPC分类号: G01M99/00 G01H1/10 G01N3/32

    CPC分类号: G01N3/32 G01N2291/02491

    摘要: A torsional vibration monitoring system for monitoring torsional vibration occurring in a rotating shaft system such as in a power generator turbine is disclosed. Torsional vibrations are measured at a small number of measurable positions on the rotating shaft system, and stresses at other arbitrary positions are estimated by linearly decomposing the torsional vibrations. The fatigue life expenditure on the rotating shaft system is obtained and monitored on the basis of the estimation obtained by the linear decomposition of the torsional vibration. For a huge vibration such as caused by thunder which may produce stresses on the rotating shaft system and which can not be estimated by the linear decomposition thereof, the torsional vibration monitoring apparatus may be provided with means to produce data which may be used in other analysis, by recording real torsional vibrations caused thereby.

    摘要翻译: 公开了一种用于监测在诸如发电机涡轮机中的旋转轴系中发生的扭转振动的扭转振动监测系统。 在旋转轴系统上的少量可测量位置处测量扭转振动,并且通过线性分解扭转振动来估计其它任意位置处的应力。 基于通过扭转振动的线性分解获得的估计,获得并监视旋转轴系统的疲劳寿命。 对于可能由旋转轴系产生应力的雷电引起的巨大振动,不能通过线性分解来估计,振动监测装置可以设置有产生可用于其他分析的数据的装置 通过记录由此引起的真实的扭转振动。

    METHOD FOR PRODUCING TERTIARY BUTYL ALCOHOL
    8.
    发明申请
    METHOD FOR PRODUCING TERTIARY BUTYL ALCOHOL 有权
    生产叔丁醇的方法

    公开(公告)号:US20090253945A1

    公开(公告)日:2009-10-08

    申请号:US11721742

    申请日:2005-12-15

    IPC分类号: C07C29/04

    CPC分类号: C07C29/04 C07C31/12

    摘要: Disclosed is a method for producing tertiary butyl alcohol through hydration reaction of isobutylene and water in the presence of a cation exchange resin by using a reactor having at least two reactor vessels provided in series. The method is characterized in that a fluid in a reactor vessel at the most downstream side forms a two-liquid phase and the reaction temperature of the reactor vessel is kept at 70° C. or lower, and a fluid in at least one reactor vessel other than the one at the most downstream side forms a homogeneous phase.

    摘要翻译: 公开了通过使用具有串联提供的至少两个反应器容器的反应器,在阳离子交换树脂存在下,通过异丁烯和水的水合反应生产叔丁醇的方法。 该方法的特征在于,最下游侧的反应器容器中的流体形成双液相,反应容器的反应温度保持在70℃以下,在至少一个反应器容器 除了最下游侧的那一个形成均相。

    METHOD FOR SYNTHESIZING T-BUTYL (METH)ACRYLATE
    9.
    发明申请
    METHOD FOR SYNTHESIZING T-BUTYL (METH)ACRYLATE 有权
    合成叔丁基(甲基)丙烯酸酯的方法

    公开(公告)号:US20090012327A1

    公开(公告)日:2009-01-08

    申请号:US11815664

    申请日:2006-02-06

    IPC分类号: C07C57/18

    CPC分类号: C07C67/04 C07C69/54

    摘要: Disclosed is a method for synthesizing t-butyl (meth)acrylate at low cost. Specifically, disclosed is a method for synthesizing a carboxylic acid ester by performing an addition reaction between isobutylene and (meth)acrylic acid in the presence of an acidic catalyst. This method includes the steps of: (A) performing a dehydration decomposition reaction of t-butyl alcohol in the presence of a first acidic catalyst; (B) obtaining crude isobutylene gas by separating at least water from a produced gas obtained in the step A; (C) absorbing the crude isobutylene gas in an absorption solvent containing (meth)acrylic acid; and (D) producing t-butyl (meth)acrylate by performing the addition reaction by bringing the absorption solvent which has absorbed the crude isobutylene gas into contact with a second acidic catalyst.

    摘要翻译: 公开了以低成本合成(甲基)丙烯酸叔丁酯的方法。 具体地,公开了通过在酸性催化剂的存在下进行异丁烯和(甲基)丙烯酸之间的加成反应来合成羧酸酯的方法。 该方法包括以下步骤:(A)在第一酸性催化剂的存在下进行叔丁醇的脱水分解反应; (B)通过从步骤A中获得的产生的气体中至少分离出水来获得粗异丁烯气体; (C)在含有(甲基)丙烯酸的吸收溶剂中吸收粗异丁烯气体; 和(D)通过使吸收了粗异丁烯气体的吸收溶剂与第二酸性催化剂接触进行加成反应来生产(甲基)丙烯酸叔丁酯。

    Method for synthesizing t-butyl (meth)Acrylate
    10.
    发明授权
    Method for synthesizing t-butyl (meth)Acrylate 有权
    (甲基)丙烯酸叔丁酯的合成方法

    公开(公告)号:US07803964B2

    公开(公告)日:2010-09-28

    申请号:US11815664

    申请日:2006-02-06

    IPC分类号: C07C69/52

    CPC分类号: C07C67/04 C07C69/54

    摘要: Disclosed is a method for synthesizing t-butyl (meth)acrylate at low cost. Specifically, disclosed is a method for synthesizing a carboxylic acid ester by performing an addition reaction between isobutylene and (meth)acrylic acid in the presence of an acidic catalyst. This method includes the steps of: (A) performing a dehydration decomposition reaction of t-butyl alcohol in the presence of a first acidic catalyst; (B) obtaining crude isobutylene gas by separating at least water from a produced gas obtained in the step A; (C) absorbing the crude isobutylene gas in an absorption solvent containing (meth)acrylic acid; and (D) producing t-butyl (meth)acrylate by performing the addition reaction by bringing the absorption solvent which has absorbed the crude isobutylene gas into contact with a second acidic catalyst.

    摘要翻译: 公开了以低成本合成(甲基)丙烯酸叔丁酯的方法。 具体地,公开了通过在酸性催化剂的存在下进行异丁烯和(甲基)丙烯酸之间的加成反应来合成羧酸酯的方法。 该方法包括以下步骤:(A)在第一酸性催化剂的存在下进行叔丁醇的脱水分解反应; (B)通过从步骤A中获得的产生的气体中至少分离出水来获得粗异丁烯气体; (C)在含有(甲基)丙烯酸的吸收溶剂中吸收粗异丁烯气体; 和(D)通过使吸收了粗异丁烯气体的吸收溶剂与第二酸性催化剂接触进行加成反应来生产(甲基)丙烯酸叔丁酯。