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    Process for preparing a polymerization catalyst and preparation of ethylene polymers with this catalyst
    91.
    发明授权
    Process for preparing a polymerization catalyst and preparation of ethylene polymers with this catalyst 失效
    制备聚合催化剂的方法和使用该催化剂制备乙烯聚合物

    公开(公告)号：US4458028A

    公开(公告)日：1984-07-03

    申请号：US405373

    申请日：1982-08-05

    Applicant: Lambertus J. M. A. van de Leemput ,  Godefridus A. H. Nooijen

    Inventor： Lambertus J. M. A. van de Leemput ,  Godefridus A. H. Nooijen

    IPC: C08F4/00 ,  C08F4/02 ,  C08F4/24 ,  C08F4/60 ,  C08F4/69 ,  C08F10/00 ,  C08F10/10 ,  C08F4/68

    CPC classification number: C08F10/00 ,  C08F10/10 ,  C08F110/02 ,  C08F2410/04

    Abstract: This invention relates to a process for forming a catalyst containing chromium and vanadium, by depositing chromium- and vanadium compounds on an inert, particulate inorganic support. The chromium is deposited as a complex of a chromium compound that may be a chromium-1,3-diketocompound with a Group II or III element hydrocarbyl. The vanadium compound can be but need not be a complex of a vanadium compound with a Group II or III element. Not more than one of the chromium- and a vanadium compounds may be the chelate of a 1.3-diketo-compound, whether or not complexed with a Group II or III element hydrocarbyl. The process for polymerizing an olefin using the catalysts of the invention is also disclosed.

    Abstract translation: 本发明涉及通过在惰性颗粒状无机载体上沉积铬和钒化合物来形成含有铬和钒的催化剂的方法。 铬作为铬化合物的复合物沉积，所述铬化合物可以是具有二价或三价元素烃基的1,3-二酮化合物。 钒化合物可以是但不一定是钒化合物与II或III族元素的络合物。 铬化合物和钒化合物中不超过一种可能是1,3-二酮化合物的螯合物，无论是否与II或III族元素烃基络合。 还公开了使用本发明的催化剂聚合烯烃的方法。

    Process for the preparation of melamine
    96.
    发明授权
    Process for the preparation of melamine 失效
    三聚氰胺的制备方法

    公开(公告)号：US4433146A

    公开(公告)日：1984-02-21

    申请号：US368972

    申请日：1982-04-16

    Applicant: Jozeph H. M. Beckers ,  Rudolf Sipkema

    Inventor： Jozeph H. M. Beckers ,  Rudolf Sipkema

    IPC: C07D251/60 ,  C07D251/62

    CPC classification number: C07D251/62 ,  C07D251/60

    Abstract: An improved process for the preparation of melamine from urea or thermal decomposition products thereof wherein ammonia, carbon dioxide, and water vapor are condensed at a pressure of between about 0.5 and 70 bar to form an aqueous solution of ammonium carbamate, and such solution is increased in pressure to at least 100 bar and heated prior to being introduced into a urea synthesis zone wherein at least a portion of the ammonium carbamate is converted into urea. The aqueous solution of ammonium carbamate is heated sufficiently to decompose a portion of the ammonium carbamate into ammonia and carbon dioxide to form a gas-liquid mixture for introduction into the urea synthesis zone such that the heat released by recondensation of the ammonia and carbon dioxide is at least sufficient to provide all of the heat required for the conversion of ammonium carbamate into urea.

    Abstract translation: 用于从尿素或其热分解产物制备三聚氰胺的改进方法，其中氨，二氧化碳和水蒸汽在约0.5至70巴之间的压力下冷凝以形成氨基甲酸铵水溶液，并且这种溶液增加 在至少100巴的压力下加热，然后被引入尿素合成区，其中至少一部分氨基甲酸铵被转化成尿素。 将氨基甲酸铵水溶液充分加热，将一部分氨基甲酸铵分解为氨和二氧化碳，形成气液混合物，引入尿素合成区，使得氨和二氧化碳的再缩短释放的热量为 至少足以提供将氨基甲酸铵转化成尿素所需的全部热量。

    Filaments of high tensile strength and modulus
    97.
    发明授权
    Filaments of high tensile strength and modulus 失效
    高拉伸强度和模量的丝

    公开(公告)号：US4430383A

    公开(公告)日：1984-02-07

    申请号：US428821

    申请日：1982-09-30

    Applicant: Paul Smith ,  Pieter J. Lemstra

    Inventor： Paul Smith ,  Pieter J. Lemstra

    IPC: B29C70/10 ,  D01F6/04 ,  D02G3/00

    CPC classification number: D01F6/04 ,  B29C70/10 ,  D01D10/02 ,  D01D5/12 ,  B29K2105/08 ,  B29K2223/06 ,  B29K2995/0088 ,  D07B1/025 ,  D07B2205/2014 ,  Y10T428/2913

    Abstract: The invention relates to the preparation of filaments with a high tensile strength and a high modulus and to the filaments thus prepared. A solution of a linear polyethylene with a weight-average molecular weight of at least 4.times.10.sup.5 is spun and the filaments, from which the solvent may have been removed in whole or in part, are drawn using a draw ratio of at least (12.times.10.sup.6 /M.sub.w)+1. The filaments are drawn at a temperature such that the modulus is at least 20 GPa.The invention allows filaments to be prepared at high drawing rates, of 0.5 sec.sup.-1 or more, with a modulus of at least 20 GPa and a tensile strength of at least 1 GPa.

    Abstract translation: 本发明涉及制备具有高拉伸强度和高模量的长丝以及如此制备的长丝。 旋转重均分子量至少为4×10 5的直链聚乙烯溶液，使用至少为（12×10 6 / Mw）的拉伸比拉伸溶剂可以全部或部分除去的长丝 ）+1。 长丝在使得模量为至少20GPa的温度下拉伸。 本发明允许长丝以0.5秒-1以上的高拉伸速率制备，模量为至少20GPa，拉伸强度为至少1GPa。

    Polymer composition comprising ClPe, S/An, PVC, and rubber
    98.
    发明授权
    Polymer composition comprising ClPe, S/An, PVC, and rubber 失效
    包含ClPe，S / An，PVC和橡胶的聚合物组合物

    公开(公告)号：US4424309A

    公开(公告)日：1984-01-03

    申请号：US291077

    申请日：1981-08-07

    Applicant: Herman A. J. Schepers

    Inventor： Herman A. J. Schepers

    IPC: C08L27/00 ,  C08L1/00 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L23/16 ,  C08L23/28 ,  C08L25/00 ,  C08L25/12 ,  C08L27/06 ,  C08L33/00 ,  C08L33/02 ,  C08L33/18 ,  C08L51/00 ,  C08L51/02 ,  C08L101/00 ,  C08L23/22

    CPC classification number: C08L25/12 ,  C08L27/06 ,  C08L21/00 ,  C08L23/16 ,  C08L23/286

    Abstract: The invention relates to a polymer composition based on a copolymer of an unsaturated nitrile, a substantially saturated rubber, a chlorinated polyethylene, and a vinylchloride polymer. To improve the impact resistance and the flexural modulus, the polymer composition according to the invention comprises: a. 50-95 parts by weight of: a.1. 5-70 parts by weight of one or more polymers obtained by polymerizing a mixture of: 10-90% wt. styrene and/or styrene derivatives, 90-10% wt. acrylonitrile and/or methacrylonitrile, and 0-20% wt. of one or more other monomers; and a.2. 95-30% vinylchloride polymer; and b. 5-50 parts by weight of: b.1. a substantially saturated rubber, and b.2. chlorinated polyethylene; with the vinylchloride polymer content in the overall polymer composition being at least about 25% by weight.

    Abstract translation: 本发明涉及一种基于不饱和腈，基本上饱和的橡胶，氯化聚乙烯和氯乙烯聚合物的共聚物的聚合物组合物。 为了提高抗冲击性和挠曲模量，本发明的聚合物组合物包括：a。 50-95重量份：a.1。 5-70重量份的一种或多种聚合物，其通过以下的混合物聚合而获得：10-90重量％ 苯乙烯和/或苯乙烯衍生物，90-10重量％ 丙烯腈和/或甲基丙烯腈，和0-20重量％ 的一种或多种其它单体; 和a.2。 95-30％氯乙烯聚合物; 和b。 5-50重量份：b.1。 一个基本饱和的橡胶，和b.2。 氯化聚乙烯; 总的聚合物组合物中的氯乙烯聚合物含量为至少约25重量％。

    Process for the preparation of filaments of high tensile strength and modulus
    99.
    发明授权
    Process for the preparation of filaments of high tensile strength and modulus 失效
    制备高拉伸强度和模量的长丝的方法

    公开(公告)号：US4422993A

    公开(公告)日：1983-12-27

    申请号：US162449

    申请日：1980-06-24

    Applicant: Paul Smith ,  Pieter J. Lemstra

    Inventor： Paul Smith ,  Pieter J. Lemstra

    IPC: B29C70/10 ,  D01F6/04 ,  D01D5/12

    CPC classification number: D01F6/04 ,  B29C70/10 ,  D01D10/02 ,  D01D5/12 ,  B29K2105/08 ,  B29K2223/06 ,  B29K2995/0088 ,  D07B1/025 ,  D07B2205/2014 ,  Y10T428/2913

    Abstract: The invention relates to the preparation of filaments with a high tensile strength and a high modulus and to the filaments thus prepared. A solution of a linear polyethylene with a weight-average molecular weight of at least 4.times.10.sup.5 is spun and the filaments, from which the solvent may have been removed in whole or in part, are drawn using a draw ratio of at least (12.times.10.sup.6 /M.sub.w)+1. The filaments are drawn at a temperature such that the modulus is at least 20 GPa.The invention allows filaments to be prepared at high drawing rates, of 0.5 sec.sup.-1 or more, with a modulus of at least 20 GPa and a tensile strength of at least 1 GPa.

    Abstract translation: 本发明涉及制备具有高拉伸强度和高模量的长丝以及如此制备的长丝。 旋转重均分子量至少为4×10 5的直链聚乙烯溶液，使用至少为（12×10 6 / Mw）的拉伸比拉伸溶剂可以全部或部分除去的长丝 ）+1。 长丝在使得模量为至少20GPa的温度下拉伸。 本发明允许长丝以0.5秒-1以上的高拉伸速率制备，模量为至少20GPa，拉伸强度为至少1GPa。

    Process for the preparation of a 5-alkyl-butyrolactone
    100.
    发明授权
    Process for the preparation of a 5-alkyl-butyrolactone 失效
    制备5-烷基 - 丁内酯的方法

    公开(公告)号：US4420622A

    公开(公告)日：1983-12-13

    申请号：US380757

    申请日：1982-05-21

    Applicant: Cornelis G. M. van de Moesdijk ,  Petrus H. J. Janssen

    Inventor： Cornelis G. M. van de Moesdijk ,  Petrus H. J. Janssen

    IPC: C07D307/33 ,  B01J23/00 ,  B01J23/75 ,  B01J23/755 ,  C07B61/00 ,  C07D315/00 ,  C07D307/32

    CPC classification number: C07D315/00

    Abstract: The preparation of 5-alkyl-butyrolactones is described using C.sub.8 hydrocarbon levulinate esters, with side-chain alkyl substituents of up to 4 carbon atoms as starting material, with the reaction being conducted with hydrogen at a temperature of from 150.degree. to 325.degree. C., in the gas phase, and in the presence of a hydrogenation catalyst composed of metals of Group VIII or Group Ib of the Periodic Table. The process provides extremely high conversion rates and lactone yields, the prolonged catalyst activity.

    Abstract translation: 5-烷基 - 丁内酯的制备使用C 8烃基乙酰丙酸酯进行描述，其具有至多4个碳原子的侧链烷基取代基作为起始原料，反应在150至325℃的温度下用氢气进行 在气相中，并且在由元素周期表第VIII族或第Ib族的金属组成的氢化催化剂的存在下。 该方法提供极高的转化率和内酯产率，延长催化剂活性。

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