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    Hydrophilization treatment liquid for semiconductor wafer surface
    1.
    发明授权
    Hydrophilization treatment liquid for semiconductor wafer surface 有权

    公开(公告)号：US12060498B2

    公开(公告)日：2024-08-13

    申请号：US17261931

    申请日：2020-03-18

    申请人： DAICEL CORPORATION

    发明人： Yuichi Sakanishi

    IPC分类号： C09G1/04 ,  C08G65/00 ,  C08L71/02 ,  C08L71/08 ,  H01L21/321

    CPC分类号： C09G1/04 ,  C08G65/00 ,  C08L71/02 ,  C08L71/08 ,  H01L21/3212 ,  C08G2650/54

    摘要： Provided is a hydrophilization treatment liquid for a semiconductor wafer surface, the hydrophilization treatment liquid being capable of imparting hydrophilicity to the semiconductor wafer surface.
    A hydrophilization treatment liquid for a semiconductor wafer surface, the hydrophilization treatment liquid comprising water and a compound represented by Formula (1) below, and a total content of the water and the compound represented by Formula (1) below being 95 wt. % or greater.

    R1O—(C3H6O2)n—H  (1)



    where R1 denotes a hydrogen atom, a hydrocarbon group having from 1 to 24 carbon atoms and optionally having a hydroxyl group, or a group represented by R2CO, the R2 denoting a hydrocarbon group having from 1 to 24 carbon atoms; and n indicates an average degree of polymerization of a glycerin unit in the parentheses, and is from 2 to 60.

    Fluidized bed reactor and method for preparing polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde
    10.
    发明授权
    Fluidized bed reactor and method for preparing polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde 有权
    流化床反应器及由二甲氧基甲烷和多聚甲醛制备聚甲醛二甲醚的方法

    公开(公告)号：US09346916B2

    公开(公告)日：2016-05-24

    申请号：US14589651

    申请日：2015-01-05

    申请人： Shandong Yuhuang Chemical Co., Ltd. ,  Tsinghua University

    发明人： Jinfu Wang ,  Qiang Tang ,  Shengwei Wang ,  Tiefeng Wang ,  Shuangxi Chen ,  Yuqiang Wang

    IPC分类号： B01J8/24 ,  B01J8/28 ,  C08G65/00 ,  B01J8/18

    CPC分类号： C08G65/00 ,  B01J8/1818 ,  B01J8/1827 ,  B01J8/1836 ,  B01J8/28 ,  B01J2208/00212 ,  B01J2208/00902 ,  B01J2208/00911 ,  B01J2208/0092 ,  C07C41/56 ,  C08G65/002 ,  C08G65/2696 ,  C07C43/30

    摘要： The invention belongs to energy chemical technical field, especially relates to a fluidized bed reactor and a method for preparation of polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde. The fluidized bed reactor comprises a gas inlet, a gas distributor, a catalyst inlet, a gas outlet, a fluid inlet, a catalyst outlet, a bottom component and an interstage component, a bottom component related gas upward channel, an interstage component related gas upward channel, a fluid outlet, a bottom downcomer and an interstage downcomer. A process for preparation of polyoxymethylene dimethyl ethers comprises the steps of: fluidizing gas is introduced into a bottom bed from the gas inlet via the bottom component related gas upward channel through the gas distributor; the fluidizing gas goes upwards and flows out of the reactor via the gas outlet; paraformaldehyde and dimethoxymethane are introduced into a bed through the fluid inlet; the fluid goes downwards and leaves the reactor via the fluid outlet. Compared with a conventional cannula reactor, the fluidized bed reactor improves the dispersion uniformity of catalyst and conversion of formaldehyde.

    摘要翻译： 本发明属于能源化学技术领域，特别涉及一种流化床反应器和一种由二甲氧基甲烷和多聚甲醛制备聚甲醛二甲醚的方法。 流化床反应器包括气体入口，气体分配器，催化剂入口，气体出口，流体入口，催化剂出口，底部组分和级间组分，底部组分相关气体向上通道，级间组分相关气体 向上通道，流体出口，底部降液管和级间降液管。 一种制备聚甲醛二甲醚的方法包括以下步骤：将气体从气体入口通过底部成分相关气体向上通道通过气体分配器引入底床; 流化气体向上流动并通过气体出口流出反应器; 多聚甲醛和二甲氧基甲烷通过流体入口引入床中; 流体向下流动并通过流体出口离开反应器。 与传统的套管反应器相比，流化床反应器改善了催化剂的分散均匀性和甲醛转化率。