Method for preparing cerium carbonate
    1.
    发明授权
    Method for preparing cerium carbonate 有权
    碳酸铈的制备方法

    公开(公告)号:US08795623B2

    公开(公告)日:2014-08-05

    申请号:US13016311

    申请日:2011-01-28

    IPC分类号: C01F17/00

    摘要: Disclosed is a method for preparing cerium carbonate that can prepare cerium carbonate having uniform crystal structure, shape and size with high productivity. The method for preparing cerium carbonate comprises: continuously introducing a reaction solution comprising cerium precursor and urea in a tubular reactor including an inlet, an outlet, and one or more reaction tubes through the inlet; reacting the cerium precursor with urea at an elevated temperature in the reaction tube; and, continuously discharging cerium carbonate formed by the reaction of the cerium precursor and urea to the outlet.

    摘要翻译: 公开了一种制备能够以高生产率制备具有均匀晶体结构,形状和尺寸的碳酸铈的碳酸铈的方法。 制备碳酸铈的方法包括:在包括入口,出口和一个或多个反应管的管式反应器中连续引入包含铈前体和尿素的反应溶液通过入口; 在反应管中在升高的温度下使铈前体与脲反应; 并且通过铈前体和尿素的反应形成的碳酸铈连续排出到出口。

    Method for preparing cerium carbonate and cerium oxide
    3.
    发明授权
    Method for preparing cerium carbonate and cerium oxide 有权
    制备碳酸铈和氧化铈的方法

    公开(公告)号:US08637153B2

    公开(公告)日:2014-01-28

    申请号:US13021464

    申请日:2011-02-04

    IPC分类号: B32B5/16

    摘要: Disclosed is a method for preparing cerium carbonate that can improve yield or productivity of cerium carbonate and enables preparation of cerium carbonate having uniform diameter, cerium carbonate, and a method for preparing cerium oxide.The method for preparing cerium carbonate comprises mixing the cerium precursor with urea; and, elevating the temperature of the mixture to 50° C. or more in the absence of a separate reaction medium to react the cerium precursor with urea in the presence of a polymer dispersant.

    摘要翻译: 公开了一种制备可以提高碳酸铈的产率或生产率并能够制备直径均匀的碳酸铈,碳酸铈和制备氧化铈的方法。 制备碳酸铈的方法包括将铈前体与尿素混合; 并且在没有单独的反应介质的情况下将混合物的温度提高到50℃以上,以在聚合物分散剂存在下使铈前体与脲反应。

    Method for preparing cerium carbonate
    6.
    发明授权
    Method for preparing cerium carbonate 有权
    碳酸铈的制备方法

    公开(公告)号:US08216327B2

    公开(公告)日:2012-07-10

    申请号:US12933576

    申请日:2009-03-18

    IPC分类号: B24D3/02 C09C1/68 C01F17/00

    摘要: The present invention relates to a method for preparing cerium carbonate which enables preparation of hexagonal cerium carbonate by a simplified process, a cerium carbonate powder prepared thereby, and a method for preparing a cerium oxide powder using the same.The method for preparing cerium carbonate comprises the step of contact-reacting orthorhombic cerium carbonate with a primary alcohol aqueous solution comprising water and primary alcohol at a weight ratio of 1:0.1 or more at a temperature of 160° C. or more to form hexagonal cerium carbonate.

    摘要翻译: 本发明涉及一种制备碳酸铈的方法,其可以通过简化的方法制备六方碳酸铈,由此制备的碳酸铈粉末,以及使用其制备二氧化铈粉末的方法。 制备碳酸铈的方法包括在160℃或更高的温度下使正交碳酸铈与包含水和伯醇的伯醇水溶液以1:0.1或更高的重量比接触反应以形成六方晶系的步骤 碳酸铈。

    METHOD FOR PREPARING CERIUM CARBONATE
    7.
    发明申请
    METHOD FOR PREPARING CERIUM CARBONATE 有权
    制备碳酸钙的方法

    公开(公告)号:US20110107680A1

    公开(公告)日:2011-05-12

    申请号:US12933576

    申请日:2009-03-18

    IPC分类号: C09G1/02 C09K3/14 C01F17/00

    摘要: The present invention relates to a method for preparing cerium carbonate which enables preparation of hexagonal cerium carbonate by a simplified process, a cerium carbonate powder prepared thereby, and a method for preparing a cerium oxide powder using the same.The method for preparing cerium carbonate comprises the step of contact-reacting orthorhombic cerium carbonate with a primary alcohol aqueous solution comprising water and primary alcohol at a weight ratio of 1:0.1 or more at a temperature of 160° C. or more to form hexagonal cerium carbonate.

    摘要翻译: 本发明涉及一种制备碳酸铈的方法,其可以通过简化的方法制备六方碳酸铈,由此制备的碳酸铈粉末,以及使用其制备二氧化铈粉末的方法。 制备碳酸铈的方法包括在160℃或更高的温度下使正交碳酸铈与包含水和伯醇的伯醇水溶液以1:0.1或更高的重量比接触反应以形成六方晶系的步骤 碳酸铈。

    SLURRY COMPOSITION FOR CMP, AND POLISHING METHOD
    8.
    发明申请
    SLURRY COMPOSITION FOR CMP, AND POLISHING METHOD 有权
    用于CMP和抛光方法的浆料组合物

    公开(公告)号:US20120270399A1

    公开(公告)日:2012-10-25

    申请号:US13502062

    申请日:2010-10-13

    摘要: The present invention relates to a CMP slurry composition comprising an abrasive particle; a dispersant; an ionic polymer additive; and a non-ionic polymer additive including a polyolefin-polyethylene glycol copolymer including at least two polyethylene glycol repeat unit as a backbone and at least a polyethylene glycol repeating unit as a side chain, and a polishing method with using the slurry composition. The CMP slurry composition shows a low polishing rate to a single-crystalline silicon layer or a polysilicon layer and a high polishing rate to a silicon oxide layer, resulting in having an excellent polishing selectivity.

    摘要翻译: 本发明涉及包含磨料颗粒的CMP浆料组合物; 分散剂; 离子聚合物添加剂; 以及包含至少包含两个聚乙二醇重复单元作为主链的聚烯烃 - 聚乙二醇共聚物和至少一个作为侧链的聚乙二醇重复单元的非离子聚合物添加剂和使用该浆料组合物的抛光方法。 CMP浆料组合物显示对单晶硅层或多晶硅层的低抛光速率和对氧化硅层的高抛光速率,导致具有优异的抛光选择性。

    CMP SLURRY AND A POLISHING METHOD USING THE SAME
    9.
    发明申请
    CMP SLURRY AND A POLISHING METHOD USING THE SAME 有权
    CMP浆料和使用其的抛光方法

    公开(公告)号:US20110008967A1

    公开(公告)日:2011-01-13

    申请号:US12921341

    申请日:2009-03-03

    IPC分类号: H01L21/306 C09K13/06

    摘要: The present invention relates to a CMP slurry that is able to reduce dishing generation, when it is applied to polishing or planarization of silicon oxide layer, for example, and a polishing method.The CMP slurry includes a polishing abrasive, a linear anionic polymer, a compound including a phosphoric acid group, and water, and the ratio of CMP polishing speed to a silicon oxide layer: CMP polishing speed to a silicon nitride layer is 30:1 to 50:1.

    摘要翻译: 本发明涉及当其用于例如氧化硅层的抛光或平面化时能够减少凹陷产生的CMP浆料,以及抛光方法。 CMP浆料包括抛光磨料,线性阴离子聚合物,包含磷酸基团和水的化合物,CMP抛光速度与氧化硅层的比例:CMP抛光速度与氮化硅层的比例为30:1至 50:1。

    Method for preparing cerium carbonate powder using urea
    10.
    发明授权
    Method for preparing cerium carbonate powder using urea 有权
    使用尿素制备碳酸铈粉末的方法

    公开(公告)号:US08303918B2

    公开(公告)日:2012-11-06

    申请号:US12531452

    申请日:2008-03-14

    IPC分类号: C01F17/00 C09K3/14

    CPC分类号: C01F17/005 C01P2002/72

    摘要: In a method for preparing cerium carbonate powder by mixing a cerium precursor solution with a urea solution and carrying out a precipitation reaction, wherein the cerium carbonate powder has a hexagonal crystal structure, by using at least one type of organic solvent as a solvent for either or both the cerium precursor solution and the urea solution, and adjusting temperature of the precipitation reaction within a range of 120° C. to 300° C. Also, the method can yield cerium carbonate powder, cerium oxide powder from the cerium carbonate powder, and CMP slurry including the cerium oxide powder as an abrasive. In the method, urea as a precipitant can improve the uniformity of a reaction, and thus it is possible to easily and inexpensively obtain cerium carbonate powder with a hexagonal crystal structure without the danger by high-temperature high-pressure and the need for an expensive system in hydrothermal synthesis.

    摘要翻译: 在通过将铈前体溶液与尿素溶液混合并进行沉淀反应制备碳酸铈粉末的方法中,其中所述碳酸铈粉末具有六方晶系结构,通过使用至少一种有机溶剂作为溶剂用于任一种 或铈前体溶液和尿素溶液两者,并将沉淀反应的温度调节在120℃至300℃的范围内。此外,该方法可以从碳酸铈粉末中得到碳酸铈粉末,氧化铈粉末, 和包括氧化铈粉末作为研磨剂的CMP浆料。 在该方法中,作为沉淀剂的尿素可以提高反应的均匀性,因此可以容易且廉价地获得六方晶系结构的碳酸铈粉末,而不会受到高温高压的危险,并且需要昂贵的 水热合成系统。