SUPPORTED METAL OXIDE DOUBLE ACTIVE CENTER POLYETHYLENE CATALYST, PROCESS FOR PREPARING THE SAME AND USE THEREOF
    142.
    发明申请
    SUPPORTED METAL OXIDE DOUBLE ACTIVE CENTER POLYETHYLENE CATALYST, PROCESS FOR PREPARING THE SAME AND USE THEREOF 有权
    支持金属氧化物双活性中心聚乙烯催化剂,其制备方法和用途

    公开(公告)号:US20150065667A1

    公开(公告)日:2015-03-05

    申请号:US14395487

    申请日:2013-04-19

    Abstract: The present invention relates to a supported hybrid vanadium-chromium-based catalyst, characterized in the catalyst is supported on a porous inorganic carrier and a V active site and a inorganic Cr active site are present on the porous inorganic carrier at the same time. The present invention further relates to a process for producing a supported hybrid vanadium-chromium-based catalyst. The invention also provides the preparation method of the catalyst, titanium or fluorine to compounds, vanadium salt and chromium salt according to the proportion, different methods of sequence and load on the inorganic carrier, after high temperature roasting, still can further add organic metal catalyst promoter prereduction activation treatment on it. The catalyst of the present invention can be used for producing ethylene homopolymers and ethylene/α-olefin copolymers. The hybrid vanadium-chromium-based catalyst can have high activity and produce polyethylene polymers having the properties of broad molecular weight distribution (Part of the products are bimodal distribution) and excellent α-olefin copolymerization characteristic.

    Abstract translation: 本发明涉及一种负载型混合钒 - 铬基催化剂,其特征在于催化剂负载在多孔无机载体上,V活性位点和无机Cr活性位点同时存在于多孔无机载体上。 本发明还涉及一种负载型混合钒 - 铬系催化剂的制造方法。 本发明还提供了催化剂,钛或氟对化合物,钒盐和铬盐的制备方法,按比例,不同的方法对无机载体的顺序和负荷进行了高温焙烧后,还可以进一步加入有机金属催化剂 启动子预还原激活治疗。 本发明的催化剂可用于生产乙烯均聚物和乙烯/α-烯烃共聚物。 混合钒 - 铬基催化剂可以具有高活性,并且生产具有宽分子量分布性质的聚乙烯聚合物(部分产物是双峰分布)和优异的α-烯烃共聚特性。

    BLUE PHASE LIQUID CRYSTAL COMPOSITION, BLUE PHASE LIQUID CRYSTAL MATERIAL AND METHOD FOR MANUFACTURING THEREOF
    143.
    发明申请
    BLUE PHASE LIQUID CRYSTAL COMPOSITION, BLUE PHASE LIQUID CRYSTAL MATERIAL AND METHOD FOR MANUFACTURING THEREOF 有权
    蓝相液晶组合物,蓝相液晶材料及其制造方法

    公开(公告)号:US20130153822A1

    公开(公告)日:2013-06-20

    申请号:US13666946

    申请日:2012-11-01

    Abstract: A blue phase liquid crystal material includes a liquid crystal host, a chiral reagent and a stable polymer. The chiral reagent is R811. The stable polymer is formed by photo-polymerizing a first monomer and a second monomer. The first monomer is 2-ethylhexyl acrylate (2-EHA), and the second monomer is 2-methyl-1,4-bis{4-[3(-acrylate)propoxyl]benzoicacid}phenylester (PTPTP). The blue phase liquid crystal material has a blue phase temperature range widened to an extremely low temperature. A blue phase liquid crystal composition and a method for manufacturing the blue phase liquid crystal material by using the blue phase liquid crystal composition are also provided.

    Abstract translation: 蓝相液晶材料包括液晶主体,手性试剂和稳定的聚合物。 手性试剂为R811。 通过光聚合第一单体和第二单体形成稳定的聚合物。 第一单体是丙烯酸2-乙基己酯(2-EHA),第二单体是2-甲基-1,4-双{4- [3( - 丙烯酸酯)丙氧基]苯甲酸}苯酯(PTPTP)。 蓝相液晶材料的蓝相温度范围变宽到极低温度。 还提供蓝相液晶组合物和通过使用蓝相液晶组合物制造蓝相液晶材料的方法。

    Cell-detaching reactor for scaled-up inoculation of anchorage-dependent cell culture
    144.
    发明申请
    Cell-detaching reactor for scaled-up inoculation of anchorage-dependent cell culture 审中-公开
    用于放大接种锚定依赖性细胞培养物的细胞分离反应器

    公开(公告)号:US20040058436A1

    公开(公告)日:2004-03-25

    申请号:US10455136

    申请日:2003-06-05

    CPC classification number: C12M27/02 C12M33/14 C12M47/02

    Abstract: A cell-detaching reactor is provided to prepare single cell suspension for inoculation of anchorage-dependent cells between the scaled-up bioreactors, which is especially useful in a commercial-scale process. The cell-detaching reactor of the invention comprises a trypsinizing zone and a separating zone, which are separated by a screen with mesh size between the diameters of the cells and the carriers.

    Abstract translation: 提供细胞分离反应器以制备用于在放大的生物反应器之间接种锚定依赖细胞的单细胞悬浮液,其在商业规模过程中特别有用。 本发明的细胞分离反应器包括一个胰蛋白酶消化区和一个分离区,它们被网孔直径与载体直径之间的筛网隔开。

    METHOD FOR PREPARING STABLE ISOTOPE-LABELED ssDNA BY BIOSYNTHESIS WITH ESCHERICHIA COLI

    公开(公告)号:US20250084447A1

    公开(公告)日:2025-03-13

    申请号:US18649214

    申请日:2024-04-29

    Abstract: Provided is a method for preparing stable isotope-labeled single-stranded DNA (ssDNA) by biosynthesis with E. coli, and the 15NH4Cl or 13C-Glcose is used as the only nitrogen or carbon source, which may significantly reduce costs. In the method of the present disclosure, the target sequence of ssDNA is tandemly duplicated on a high-copy vector, a site for a first restriction endonuclease and a site for a second restriction endonuclease are added to the 5′ and 3′ ends of the target sequence, respectively, and the recombinant vector is digested to obtain an asymmetric double-stranded DNA structure, which is then isolated by denaturation to obtain two ssDNAs of unequal lengths, including 15N- or 13C-labeled target ssDNA. The method of the present disclosure is able to effectively increase the yield of ssDNA, thereby improving the efficiency of in vitro synthesis of isotope labeled ssDNA.

    Ultrahigh-temperature wind tunnel erosion testing system

    公开(公告)号:US12241813B2

    公开(公告)日:2025-03-04

    申请号:US18021173

    申请日:2022-08-04

    Abstract: An ultrahigh-temperature wind tunnel erosion testing system is provided, including a fuel system (1), an erosion system (2), an erosion spray gun (3), a test piece fixture (5) and a testing device; the erosion spray gun (3) is connected with the fuel system (1) and the erosion system (2) respectively; the erosion spray gun (3) is arranged on a lifting and rotating mechanism (4); the test piece fixture (5) is arranged on one side of the lifting and rotating mechanism (4) and is opposite to a nozzle of the erosion spray gun (3); and the testing device is connected with the test piece fixture (5). The plurality of groups of test pieces are circlewise arranged around the lifting and rotating mechanism (4).

    CONSTRUCTION METHOD AND DEVICE OF CHEMICAL ENGINEERING KNOWLEDGE GRAPH AND INTELLIGENT QUESTION ANSWERING METHOD AND DEVICE

    公开(公告)号:US20240256924A1

    公开(公告)日:2024-08-01

    申请号:US18556617

    申请日:2022-03-30

    CPC classification number: G06N5/04 G06N5/022

    Abstract: The disclosure relates to a construction method and device for a chemical knowledge graph, an intelligent question answering method and device for chemical knowledge, and two computer-readable storage media. The construction method comprises the following steps: obtaining knowledge data in chemical industry field; pre-processing the knowledge data to obtain entity data and property data related to chemical knowledge; determining a preliminary knowledge representation according to the entity data and the property data; performing entity alignment on the preliminary knowledge representation to obtain a standard knowledge representation; and constructing the chemical knowledge graph according to the standard knowledge representation. The construction method for a chemical knowledge graph can automatically collect relevant knowledge in the chemical industry to construct a chemical knowledge graph on basis of natural language processing, big data and artificial intelligence technology, thereby greatly improving the construction speed of the chemical knowledge graph and reducing the manual construction cost of the chemical knowledge graph.

    Rotational flow rotation deoiling method and device for oil-based mud rock debris

    公开(公告)号:US12017937B2

    公开(公告)日:2024-06-25

    申请号:US17275234

    申请日:2018-12-05

    CPC classification number: C02F11/127 E21B21/063 C02F11/13

    Abstract: Disclosed is a rotational flow rotation deoiling method for oil-based mud rock debris. The method comprises the following steps: (1) System viscosity control, wherein by means of heat exchange between a gas medium and the rock debris, the viscosity of the oil-based mud debris is reduced to reduce the interaction force between oil, water, and the surface and channels of solid particles, thereby facilitating the separation in a rotational flow field; (2) Rotational flow rotation deoiling, wherein the oil-based mud rock debris particles undergo a coupled motion of rotation and revolution, wherein by means of the rotation of the rock debris particles, the centrifugal desorption of oil on the surface of a solid phase, oil in capillaries and oil in pores is enhanced; and by means of the centrifugal force of periodic oscillation generated by the revolution thereof, the separation and enrichment of oil and gas and the solid phase are completed, thereby achieving the removal of the oil phase from the pore channels of the rock debris; and (3) gas-liquid separation and reuse, wherein an oil-containing mixture produced in step (2) is subjected to gas-liquid separation so as to realize the reuse of a base oil, circulation of the gas medium, and a harmless treatment of the rock debris; and a rotational flow rotation deoiling device for oil-based mud rock debris is further comprised.

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