利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

12 条记录 (耗时 0.025 秒)

    Method for producing 1,2-propylene glycol using bio-based glycerol
    2.
    发明授权
    Method for producing 1,2-propylene glycol using bio-based glycerol 失效
    使用生物基甘油生产1,2-丙二醇的方法

    公开(公告)号：US07586016B2

    公开(公告)日：2009-09-08

    申请号：US12232982

    申请日：2008-09-26

    申请人： Fang Cui ,  Jing Chen ,  Chungu Xia ,  Haixiao Kang ,  Xinzhi Zhang ,  Jin Tong ,  Xuemei Li

    发明人： Fang Cui ,  Jing Chen ,  Chungu Xia ,  Haixiao Kang ,  Xinzhi Zhang ,  Jin Tong ,  Xuemei Li

    IPC分类号： C07C29/132

    CPC分类号： B01J37/18 ,  B01J23/83 ,  B01J37/03 ,  C07C29/60 ,  C07C31/205

    摘要： This invention disclosed a method for producing 1,2-propylene glycol from bio-based glycerol. In this method, a CuO—CeO2—SiO2 catalyst is filled into a fixed bed reactor, a glycerol solution is flowed into the reactor together with hydrogen gas in a manner of top feeding, and controlling the reaction temperature to be 170˜200° C., the reaction pressure to be 1.0˜5.0 MPa, so as to realize the production of 1,2-propylene glycol from the hydrogenation of glycerol. The catalyst used in this invention can sustain a high selectivity for the target product and a high conversion for glycerol for 500 hours.

    摘要翻译： 本发明公开了一种从生物基甘油生产1,2-丙二醇的方法。 在该方法中，将CuO-CeO 2 -SiO 2催化剂填充到固定床反应器中，以顶部进料的方式将甘油溶液与氢气一起流入反应器，控制反应温度为170〜200℃ 反应压力为1.0〜5.0MPa，从而实现甘油氢化制备1,2-丙二醇。 用于本发明的催化剂可以维持目标产物的高选择性和甘油的高转化率500小时。

    Method for synthesizing polyoxymethylene dimethyl ethers by ionic liquid catalysis
    4.
    发明授权
    Method for synthesizing polyoxymethylene dimethyl ethers by ionic liquid catalysis 有权
    通过离子液体催化合成聚甲醛二甲醚的方法

    公开(公告)号：US08344183B2

    公开(公告)日：2013-01-01

    申请号：US12548807

    申请日：2009-08-27

    申请人： Jing Chen ,  Heyuan Song ,  Chungu Xia ,  Xinzhi Zhang ,  Zhonghua Tang

    发明人： Jing Chen ,  Heyuan Song ,  Chungu Xia ,  Xinzhi Zhang ,  Zhonghua Tang

    IPC分类号： C07C41/01

    CPC分类号： C07C41/50 ,  C07C43/30

    摘要： The present invention discloses a method for synthesizing polyoxymethylene dimethyl ethers by ionic liquid catalysis. The method comprises synthesizing polyoxymethylene dimethyl ethers by using a functional acidic ionic liquid as catalyst and using methylal and trioxymethylene as reactant under a relative mild reaction condition. The invention has advantages of high catalyst activity and reaction conversion, simple reaction process, high operationability and controllability, as well as good product distribution and high raw material utilization ratio.

    摘要翻译： 本发明公开了一种通过离子液体催化合成聚甲醛二甲醚的方法。 该方法包括使用功能性酸性离子液体作为催化剂，并在相对温和的反应条件下使用甲缩醛和三氧化亚甲基作为反应物来合成聚甲醛二甲醚。 本发明具有催化剂活性高，反应转化率高，反应速度快，操作性好，可控性好，产品分布好，原料利用率高的优点。

    Method for preparing polymethoxymethylal
    6.
    发明授权
    Method for preparing polymethoxymethylal 有权
    制备聚甲氧基甲基的方法

    公开(公告)号：US07560599B2

    公开(公告)日：2009-07-14

    申请号：US12180594

    申请日：2008-07-28

    申请人： Jing Chen ,  Zhonghua Tang ,  Chungu Xia ,  Xinzhi Zhang ,  Zhen Li

    发明人： Jing Chen ,  Zhonghua Tang ,  Chungu Xia ,  Xinzhi Zhang ,  Zhen Li

    IPC分类号： C07C43/30 ,  C07C43/303

    CPC分类号： C08G2/10 ,  C07C41/56 ,  C07C43/30

    摘要： This invention describes a method for preparing polymethoxymethylal. By this method, polymethoxymethylal is prepared by a catalytic reaction using methanol and trioxymethylene as reactants and using an ionic liquid as catalyst under a relatively moderate reaction condition. The catalyst of this invention has a high catalytic activity and a high conversion; the reaction process is simple, easy to be operated and has a strong controllability; the distribution of the products after reaction is superior and the utilization ratio of the raw materials is high.

    摘要翻译： 本发明描述了制备聚甲氧基甲基的方法。 通过该方法，通过使用甲醇和三氧化甲烯作为反应物的催化反应制备聚甲氧基甲基，并在相对适中的反应条件下使用离子液体作为催化剂。 本发明的催化剂具有高催化活性和高转化率; 反应过程简单，操作方便，可控性强; 反应后产物的分布优越，原料利用率高。

    Method of synthesizing trioxymethylene from formaldehyde by the catalytic action of an ionic liquid
    7.
    发明授权
    Method of synthesizing trioxymethylene from formaldehyde by the catalytic action of an ionic liquid 有权
    通过离子液体的催化作用从甲醛合成三聚甲醛的方法

    公开(公告)号：US07244854B2

    公开(公告)日：2007-07-17

    申请号：US11636156

    申请日：2006-12-08

    申请人： Chungu Xia ,  Zhonghua Tang ,  Jing Chen ,  Xinzhi Zhang ,  Zhen Li ,  Enxiu Guo

    发明人： Chungu Xia ,  Zhonghua Tang ,  Jing Chen ,  Xinzhi Zhang ,  Zhen Li ,  Enxiu Guo

    IPC分类号： C07D323/06 ,  C07D323/04

    CPC分类号： C07D323/06

    摘要： The present invention relates to a method of synthesizing trioxymethylene from formaldehyde by the catalytic action of an acidic ionic liquid. In the method, formaldehyde solution with a concentration of 30˜80 wt % is used as reactant, and an ionic liquid is used as catalyst. The cation moiety of the catalyst is selected from either imidazoles cation or pyridines cation, and the anion moiety of the catalyst is selected from one of p-tolyl benzene sulfonate, trifluoromethyl sulfonate, and hydrogen sulfate. In the present invention, ionic liquid is used, for the first time, as a catalyst to synthesize trioxymethylene from formaldehyde. The catalyst can be circularly used for continuous sampling.

    摘要翻译： 本发明涉及一种通过酸性离子液体的催化作用从甲醛合成三甲基甲酰胺的方法。 在该方法中，使用浓度为30〜80重量％的甲醛溶液作为反应物，使用离子液体作为催化剂。 催化剂的阳离子部分选自咪唑阳离子或吡啶阳离子，催化剂的阴离子部分选自对甲苯基苯磺酸盐，三氟甲基磺酸盐和硫酸氢盐之一。 在本发明中，首次使用离子液体作为从甲醛合成三甲基甲酰胺的催化剂。 催化剂可循环用于连续取样。

    METHOD OF SYNTHESIZING TRIOXYMETHYLENE FROM FORMALDEHYDE BY THE CATALYTIC ACTION OF AN IONIC LIQUID
    9.
    发明申请
    METHOD OF SYNTHESIZING TRIOXYMETHYLENE FROM FORMALDEHYDE BY THE CATALYTIC ACTION OF AN IONIC LIQUID 有权
    通过离子液体的催化作用合成来自甲醛的三甲基乙烯的方法

    公开(公告)号：US20070135649A1

    公开(公告)日：2007-06-14

    申请号：US11636156

    申请日：2006-12-08

    申请人： Chungu Xia ,  Zhonghua Tang ,  Jing Chen ,  Xinzhi Zhang ,  Zhen Li ,  Enxiu Guo

    发明人： Chungu Xia ,  Zhonghua Tang ,  Jing Chen ,  Xinzhi Zhang ,  Zhen Li ,  Enxiu Guo

    IPC分类号： C07D323/06

    CPC分类号： C07D323/06

    摘要： The present invention relates to a method of synthesizing trioxymethylene from formaldehyde by the catalytic action of an acidic ionic liquid. In the method, formaldehyde solution with a concentration of 30˜80 wt % is used as reactant, and an ionic liquid is used as catalyst. The cation moiety of the catalyst is selected from either imidazoles cation or pyridines cation, and the anion moiety of the catalyst is selected from one of p-tolyl benzene sulfonate, trifluoromethyl sulfonate, and hydrogen sulfate. In the present invention, ionic liquid is used, for the first time, as a catalyst to synthesize trioxymethylene from formaldehyde. The catalyst can be circularly used for continuous sampling.

    摘要翻译： 本发明涉及一种通过酸性离子液体的催化作用从甲醛合成三甲基甲酰胺的方法。 在该方法中，使用浓度为30〜80重量％的甲醛溶液作为反应物，使用离子液体作为催化剂。 催化剂的阳离子部分选自咪唑阳离子或吡啶阳离子，催化剂的阴离子部分选自对甲苯基苯磺酸盐，三氟甲基磺酸盐和硫酸氢盐之一。 在本发明中，首次使用离子液体作为从甲醛合成三甲基甲酰胺的催化剂。 催化剂可循环用于连续取样。

    METHOD FOR PREPARING POLYOXYMETHYLENE DIMETHYL ETHERS BY ACETALATION REACTION OF FORMALDEHYDE WITH METHANOL
    10.
    发明申请
    METHOD FOR PREPARING POLYOXYMETHYLENE DIMETHYL ETHERS BY ACETALATION REACTION OF FORMALDEHYDE WITH METHANOL 有权
    通过甲醛与甲醇的反应反应制备聚羟基甲基二甲基醚的方法

    公开(公告)号：US20110313202A1

    公开(公告)日：2011-12-22

    申请号：US13164677

    申请日：2011-06-20

    申请人： Chungu Xia ,  Heyuan Song ,  Jing Chen ,  Zhen Li

    发明人： Chungu Xia ,  Heyuan Song ,  Jing Chen ,  Zhen Li

    IPC分类号： C07C41/14

    CPC分类号： C07C41/56 ,  B01J31/0284 ,  B01J2231/14 ,  B01J2231/42 ,  C07C41/58 ,  Y02P20/582 ,  Y02P20/584 ,  C07C43/30

    摘要： It is disclosed a method for preparing polyoxymethylene dimethyl ethers by continuous polymerization and acetalation reactions. The method may include two steps: performing a polymerization reaction of an aqueous formaldehyde solution under catalysis of an ionic liquid IL I to obtain a mixed aqueous solution of trioxymethylene and formaldehyde; and an acetalation reaction of the mixed aqueous solution of trioxymethylene and formaldehyde with methanol is performed under catalysis of an ionic liquid IL II to prepare polyoxymethylene dimethyl ethers. The method may use an aqueous formaldehyde solution as a starting material to prepare polyoxymethylene dimethyl ethers by continuous polymerization and acetalation reactions, achieving a high use ratio of formaldehyde. A film evaporator is used in the invention, realizing a rapid separation and recycling of the light components, with a high separation efficiency. The separation of the catalyst is simple, thereby realizing recycling of the catalyst.

    摘要翻译： 公开了通过连续聚合和缩醛化反应制备聚甲醛二甲醚的方法。 该方法可以包括以下两个步骤：在离子液体IL I的催化下进行甲醛水溶液的聚合反应，得到三甲基甲醛和甲醛的混合水溶液; 并且在离子液体IL II的催化下进行三甲醛和甲醛与甲醇的混合水溶液的缩醛化反应，以制备聚甲醛二甲醚。 该方法可以使用甲醛水溶液作为起始原料，通过连续聚合和缩醛化反应制备聚甲醛二甲醚，实现甲醛的高使用比例。 在本发明中使用薄膜蒸发器，以高分离效率实现轻组分的快速分离和再循环。 催化剂的分离是简单的，从而实现催化剂的再循环。