Reactor for preparing uranium trioxide
    1.
    发明授权
    Reactor for preparing uranium trioxide 失效
    用于制备三氧化铀的反应器

    公开(公告)号:US4399106A

    公开(公告)日:1983-08-16

    申请号:US295999

    申请日:1981-08-25

    Applicant: Kimio Ueda

    Inventor: Kimio Ueda

    Abstract: Nuclear fuels, such as uranium trioxide, are prepared by thermal decomposition of a nitrate in a fluidized bed reactor. The fluidized bed reactor for preparing uranium trioxide from uranyl nitrate by thermal decomposition has (a) a rectangularly shaped bed which satisfies the critical safety shape of .sup.235 U, (b) plural holes to supply an aqueous solution of uranyl nitrate into the reactor, (c) at least two reaction rooms divided by barriages, the bottoms of the barriers being capable of being lifted to control their distance from the floor and a mechanism by which uranium trioxide powder is taken out mainly by being overflowed from the top of the barriers through the reaction rooms, (d) heating means inside and outside of the fluidized-bed, and (e) a head structure which is upwardly V-shaped. Continuous operation can be attained with ease, and uranium trioxide can be made efficiently.

    Abstract translation: 核燃料,如三氧化铀,通过在流化床反应器中热分解硝酸盐来制备。 用于通过热分解从硝酸铀酯制备三氧化铀的流化床反应器具有(a)满足235U的关键安全形状的矩形床,(b)将硝酸铀酰水溶液供应到反应器中的多个孔,(c )至少两个反应室被分隔开,障碍物的底部能够被提升以控制其离开地板的距离以及主要通过从屏障的顶部溢出的机制,铀三氧化物粉末被引出 反应室,(d)流化床内部和外部的加热装置,和(e)向上V形的头部结构。 可以容易地实现连续操作,并且可以有效地制备三氧化二铀。

    Polymerization catalyst and process for preparing an ethylene polymer
    2.
    发明授权
    Polymerization catalyst and process for preparing an ethylene polymer 失效
    聚合催化剂和制备乙烯聚合物的方法

    公开(公告)号:US6080828A

    公开(公告)日:2000-06-27

    申请号:US310918

    申请日:1999-05-13

    CPC classification number: C08F10/02 C08F110/02 Y10S526/904

    Abstract: An ethylene polymer having small values of Mw/Mn and Mz/Mw, a small proportion of long-chain branches, a high melt tension and a high swell ratio, and a process for preparing the ethylene polymer are disclosed. A solid titanium catalyst component obtained by initially bringing a solid titanium composite which is obtained by the contact of a solid magnesium aluminum composite containing magnesium, halogen, aluminum, and an alkoxy group of 6 or more carbon atoms and/or alcohol of 6 or more carbon atoms with a tetravalent titanium compound into contact with an organometallic compound, and then bringing the resulting product into contact with oxygen is further disclosed. An ethylene polymerization catalyst comprising the above catalyst component and an organometallic compound catalyst component is furthermore disclosed. Therefore, the ethylene polymer is excellent in moldability, and a molded article obtained therefrom is excellent in rigidity and impact resistance and free from poor appearance.

    Abstract translation: 公开了具有小的Mw / Mn值和Mz / Mw值,小分支长支链,高熔体张力和高溶胀比的乙烯聚合物,以及制备乙烯聚合物的方法。 一种固体钛催化剂组分,其通过首先将含有6个或更多个碳原子和/或6个或更多个碳原子的烷基的固体镁铝复合物与含有镁,卤素,铝的固体镁铝复合物接触而获得的固体钛复合物 碳原子与四价钛化合物与有机金属化合物接触,然后使所得产物与氧接触。 还公开了包含上述催化剂组分和有机金属化合物催化剂组分的乙烯聚合催化剂。 因此,乙烯聚合物的成型性优异,其得到的成型体的刚性和耐冲击性优异,外观不良。

    Process for preparing propylene polymer composition and propylene
polymer composition
    3.
    发明授权
    Process for preparing propylene polymer composition and propylene polymer composition 失效
    制备丙烯聚合物组合物和丙烯聚合物组合物的方法

    公开(公告)号:US5854354A

    公开(公告)日:1998-12-29

    申请号:US448570

    申请日:1995-06-07

    Abstract: A process for preparing a propylene polymer composition comprising conducting multistage polymerization including a step (a) for preparing a propylene (co)polymer (a) and a step (b) for preparing an ethylene copolymer (b) in the presence of (A) a transition metal compound and (B) a compound activating the transition metal compound (A), in which the steps (a) and (b) may be carried out in any order, and the resulting propylene polymer composition contains the propylene (co)polymer (a) in an amount of 20 to 90% by weight and the ethylene copolymer (b) in an amount of 10 to 80% by weight and has MFR, as measured at 230.degree. C. under a load of 2.16 kg, of 0.01 to 500 g/10 min; and a propylene polymer composition prepared by this process. The process according to the invention can prepare a propylene polymer composition having excellent rigidity, heat resistance and impact resistance.

    Abstract translation: PCT No.PCT / JP95 / 00707 Sec。 371日期:1995年6月7日 102(e)日期1995年6月7日PCT提交1995年4月11日PCT公布。 第WO95 / 27740号公报 日期:1995年10月19日一种制备丙烯聚合物组合物的方法,包括进行多步聚合,包括制备丙烯(共)聚合物(a)的步骤(a)和用于制备乙烯共聚物(b))的步骤(b) (A)过渡金属化合物的存在和(B)活化过渡金属化合物(A)的化合物,其中步骤(a)和(b)可以以任何顺序进行,并且所得丙烯聚合物组合物含有 丙烯(共)聚合物(a)的量为20〜90重量%,乙烯共聚物(b)的含量为10〜80重量%,MFR为230℃, 为2.16kg,为0.01〜500g / 10min; 和通过该方法制备的丙烯聚合物组合物。 根据本发明的方法可以制备具有优异的刚性,耐热性和耐冲击性的丙烯聚合物组合物。

    Multi-layer pipe
    4.
    发明授权
    Multi-layer pipe 失效
    多层管

    公开(公告)号:US5842505A

    公开(公告)日:1998-12-01

    申请号:US708966

    申请日:1996-09-06

    Abstract: A multi-layer pipe has an innermost layer formed of a butene polymer composition. At least one other layer is formed of a polyolefin resin composition comprising (A) 95-5 parts by weight of a polyolefin resin, (B) 5-95 parts by weight of a filler, and (C) 0.1-10 parts by weight per 100 parts by weight of components (A) and (B) combined of a modified polyolefin resin. This multi-layer pipe undergoes minimal elongation by heat so that it is free from troubles by thermal deformation even when high temperature fluid is passed therethrough, has high rigidity, and is thus suitable as plumbing for cold and hot water.

    Abstract translation: 多层管具有由丁烯聚合物组合物形成的最内层。 至少另一层由聚烯烃树脂组合物形成,该组合物包含(A)95-5重量份聚烯烃树脂,(B)5-95重量份填料,(C)0.1-10重量份 相对于100重量份的组分(A)和(B)组合的改性聚烯烃树脂。 这种多层管经受最小的热延伸,即使当高温流体通过时也不受热变形的影响,具有高刚性,因此适用于冷热水管道。

    Process for producing polyethylene terephthalate
    5.
    发明授权
    Process for producing polyethylene terephthalate 失效
    生产聚对苯二甲酸乙二醇酯的方法

    公开(公告)号:US5830981A

    公开(公告)日:1998-11-03

    申请号:US750344

    申请日:1996-12-09

    CPC classification number: C08G63/88 C08G63/78 C08G63/80

    Abstract: A process for producing a polyethylene terephthalate in which the amount of the oligomers, such as cyclic trimer etc., is lower and which causes metal mold staining to occur difficultly. The process comprises an esterification stage in which dicarboxylicacids including mainly terephthalic acid or ester-forming derivatives of such acids are esterified with glycols including mainly ethylene glycol or with ester-forming derivatives of such glycols; a liquid phase polycondensation stage in which the esterified product obtained in the esterification stage is subjected to a polycondensation in a liquid phase containing a polycondensation catalyst and having a content of an alkaline solubilizing agent of 0.4 mole or less per mole of the polycondensation catalyst with heating; a solid phase polycondensation stage in which the polycondensation product obtained in the liquid phase polycondensation stage is heated at a temperature below the melting point of the product in an inert atmosphere; and an aqua-treatment stage in which the polycondensation catalyst is deactivated by contacting the polycondensation product obtained in the solid phase polycondensation stage with water. The polyethylene terephthalate obtained by this process is suitable as the material for containers to be charged with drinks.

    Abstract translation: PCT No.PCT / JP96 / 00944 Sec。 371日期1996年12月9日第 102(e)日期1996年12月9日PCT PCT 1996年4月5日PCT公布。 公开号WO96 / 32433 日期:1996年10月17日一种制备聚对苯二甲酸乙二醇酯的方法,其中低聚物如环状三聚体等的量较低,并且导致难以发生金属模染色。 该方法包括酯化阶段,其中主要包括对苯二甲酸或这些酸的成酯衍生物的二羧酸与主要包括乙二醇的二醇或这些二醇的酯形成衍生物酯化; 将在酯化阶段得到的酯化产物在含有缩聚催化剂的液相中进行缩聚的液相缩聚反应阶段,每摩尔缩聚催化剂的碱增溶剂的含量为0.4摩尔以下 ; 在液相缩聚阶段得到的缩聚产物在惰性气氛中在低于产物熔点的温度下加热的固相缩聚阶段; 以及通过使在固相缩聚阶段得到的缩聚物与水接触使缩聚催化剂失活的水处理阶段。 通过该方法获得的聚对苯二甲酸乙二醇酯适合作为容纳饮料的容器的材料。

    Process for preparing propylene polymer composition and propylene
polymer composition
    7.
    发明授权
    Process for preparing propylene polymer composition and propylene polymer composition 失效
    制备丙烯聚合物组合物和丙烯聚合物组合物的方法

    公开(公告)号:US5753769A

    公开(公告)日:1998-05-19

    申请号:US448569

    申请日:1995-06-07

    Abstract: A process for preparing a propylene polymer composition having excellent rigidity, heat resistance and impact resistance comprising conducting multistage polymerization including a step (a) for preparing a propylene (co)polymer (A), a step (b) for preparing a propylene-olefin copolymer (B) and a step (c) for preparing an ethylene-olefin copolymer (C) in the presence of (I) a transition metal compound and (II) a compound activating the transition metal compound (I), in which the steps (a), (b) and (c) are carried out in any order, each of the second and subsequent stage polymerizations is carried out in the presence of a polymer or polymers obtained by the preceding stage or stages, respectively, and the resulting propylene polymer composition contains the propylene (co)polymer (A) in an amount of 20 to 90% by weight, the propylene-olefin copolymer (B) in an amount of 5 to 75% by weight and the ethylene-olefin copolymer (C) in an amount of 5 to 75% by weight, and has MFR, as measured at 230.degree. C. under a load of 2.16 kg, of 0.01 to 500 g/10 min.

    Abstract translation: PCT No.PCT / JP95 / 00708 Sec。 371日期:1995年6月7日 102(e)日期1995年6月7日PCT提交1995年4月11日PCT公布。 WO95 / 27741 PCT出版物 日期:1995年10月19日一种制备具有优异的刚性,耐热性和耐冲击性的丙烯聚合物组合物的方法,其包括进行多步聚合,包括制备丙烯(共)聚合物(A)的步骤(a),步骤(b) 在(I)过渡金属化合物和(II)活化过渡金属化合物(I)的化合物的存在下,制备丙烯 - 烯烃共聚物(B)和制备乙烯 - 烯烃共聚物(C)的步骤(c) ,其中步骤(a),(b)和(c)以任何顺序进行,第二阶段和后续聚合中的每一个在通过前一阶段或阶段获得的聚合物或聚合物的存在下进行, 所得丙烯聚合物组合物含有20〜90重量%的丙烯(共)聚合物(A),丙烯 - 烯烃共聚物(B)的含量为5〜75重量%,乙烯 α-烯烃共聚物(C),其量为5〜75重量%,并具有M FR在230℃,2.16kg的负荷下测量为0.01〜500g / 10分钟。

    Process for polymerizing olefins
    9.
    发明授权
    Process for polymerizing olefins 失效
    烯烃聚合方法

    公开(公告)号:US5700749A

    公开(公告)日:1997-12-23

    申请号:US396893

    申请日:1995-03-01

    Abstract: This invention relates to a process for polymerizing olefins using a catalyst composed of a transition metal catalyst component, an aluminoxane component and an organoaluminum component. In the process of this invention, the catalyst exhibits excellent polymerization activity with the use of a small amount of the aluminoxane xane. The polymerization process gives olefin polymers having a narrow molecular weight distribution and by the copolymerization of two or more olefins, gives olefin copolymers having a narrow molecular weight distribution and a narrow composition distribution.

    Abstract translation: 本发明涉及使用由过渡金属催化剂组分,铝氧烷组分和有机铝组分组成的催化剂聚合烯烃的方法。 在本发明的方法中,使用少量的铝氧烷,催化剂表现出优异的聚合活性。 聚合方法得到具有窄分子量分布的烯烃聚合物和通过两种或更多种烯烃的共聚合得到具有窄分子量分布和窄组成分布的烯烃共聚物。

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