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13 条记录 (耗时 0.014 秒)

    Color improvement process for polyolefins
    2.
    发明授权
    Color improvement process for polyolefins 失效
    聚烯烃改色方法

    公开(公告)号：US3923760A

    公开(公告)日：1975-12-02

    申请号：US42145573

    申请日：1973-12-03

    申请人： MONSANTO CO

    发明人： MULLIKIN RICHARD V ,  ORT MORRIS R

    IPC分类号： C08F6/00 ,  C08F6/02 ,  C08F6/06

    CPC分类号： C08F6/02 ,  C08L23/02

    摘要： Polyolefins prepared by polymerization of olefins using Ziegler catalysts in which the transition metal compound is a compound of vanadium are treated in the molten state with a C2-C4 alkanol alone or in combination with a basic compound for decoloration of the polymers.

    摘要翻译： 使用齐格勒催化剂聚合烯烃制备的聚烯烃，其中过渡金属化合物是钒化合物，在熔融状态下用单独的C 2 -C 4烷醇或与用于聚合物脱色的碱性化合物组合处理。

    Polymerization of ethylene
    3.
    发明授权
    Polymerization of ethylene 失效
    乙烯聚合

    公开(公告)号：US3899477A

    公开(公告)日：1975-08-12

    申请号：US33325073

    申请日：1973-02-16

    申请人： MONSANTO CO

    发明人： ALTEMORE JOSEPH M ,  ORT MORRIS R

    IPC分类号： C08F110/02 ,  C08F1/52

    CPC分类号： C08F110/02 ,  C08F4/685

    摘要： Ethylene polymers are made by bringing ethylene under polymerization conditions at low pressures into contact with a catalyst comprising a titanium halide, a vanadium halide and an organoaluminum compound. Molecular weight distribution of the polymers is controlled by reacting the titanium halide, the vanadium halide and the organoaluminum compound in such proportions that the Al/(Ti+V) ratio is between about 0.1 and 0.5 and admixing the resulting catalyst complex with a mixture of an alkylaluminum sesquiethoxide and a trialkylaluminum prior to contacting of ethylene therewith.

    摘要翻译： 通过在低压下的聚合条件下将乙烯与包含卤化钛，卤化钒和有机铝化合物的催化剂接触来制备乙烯聚合物。 聚合物的分子量分布通过使卤化钛，卤化钒和有机铝化合物以Al /（Ti + V）比为约0.1至0.5的比例反应来控制，并将得到的催化剂配合物与 在乙烯与乙烯接触之前的烷基铝倍半乙氧基化物和三烷基铝。

    Methylene bis(aluminum dihalides) useful as polymerization catalyst components
    6.
    发明授权
    Methylene bis(aluminum dihalides) useful as polymerization catalyst components 失效
    作为聚合催化剂组分有用的亚甲基双（二氢铝）

    公开(公告)号：US3700710A

    公开(公告)日：1972-10-24

    申请号：US3700710D

    申请日：1970-03-10

    申请人： MONSANTO CO

    发明人： MOTTUS EDWARD H ,  ORT MORRIS R

    IPC分类号： B01J37/34 ,  C07F3/10 ,  C07F5/06 ,  C07F7/00 ,  C08F10/00 ,  C08F36/04 ,  C25B3/12

    CPC分类号： C25B3/12 ,  B01J37/348 ,  C07F3/106 ,  C07F5/064 ,  C07F7/00 ,  C08F10/00 ,  C08F36/04 ,  C08F4/622 ,  C08F4/42 ,  C08F4/44

    摘要： An electrolytic process is described for making certain bis(halometal)methanes such as bis(dichloroaluminum)methane, Cl2AlCH2AlCl2, which is a new compound, and these compounds can be combined with transition metal compounds such as VOCl3 to make very active catalysts for polymerizing olefinic compounds such as ethylene. In the electrolytic process boron, a Group II, Group III A or Group IV A metal, e.g., aluminum, is used as an anode with an electrolyte such as HOAlCl2 in the presence of a methylene dihalide such as CH2Cl2 or a gem dihalide which does not readily dehydrohalogenate or alkylate. It is preferred to carry out the electrolysis in the presence of ethylene or another olefinic compound to promote conductivity. Also, it is preferred that all reactants be substantially free of water, except for small known amounts of water which may be added to promote electrolysis. Also, it is preferred to blanket the electrolysis with ethylene which also serves to promote conductivity, or an inert gas to exclude moisture, oxygen and other undesirable materials. The catalysts polymerize olefinic compounds to liquid or solid polymers depending on the particular catalyst used and the olefin being polymerized. The catalysts are promoted or modified by small amounts of water or other electron donor compounds.

    摘要翻译： 描述了一种用于制备某些双 - （卤代）甲烷如双（二氯铝）甲烷，Cl 2 AlCH 2 AlCl 2的新型化合物的电解方法，并且这些化合物可以与过渡金属化合物如VOCl 3结合，以制备用于聚合的非常活泼的催化剂 烯烃化合物如乙烯。 在电解过程中，在亚甲基二卤化物如CH 2 Cl 2或二氧化铱的存在下，使用II族IIIA族或IVA族金属（例如铝）作为具有电解质如HOAlCl 2的阳极， 不容易脱卤化氢或烷基化。 优选在乙烯或其它烯烃化合物的存在下进行电解以促进电导率。 而且，优选所有反应物基本上不含水，除了可以加入的少量已知量的水以促进电解。 此外，优选用还用于促进电导率的乙烯的电解或惰性气体来排除水分，氧气和其它不期望的物质。 根据所使用的具体催化剂和正在聚合的烯烃，催化剂将烯烃化合物聚合成液体或固体聚合物。 催化剂由少量的水或其他电子给体化合物促进或改性。

    Catalyst for polymerization of olefinic compounds
    7.
    发明授权
    Catalyst for polymerization of olefinic compounds 失效
    用于烯烃化合物聚合的催化剂

    公开(公告)号：US3677911A

    公开(公告)日：1972-07-18

    申请号：US3677911D

    申请日：1970-03-10

    申请人： MONSANTO CO

    发明人： MOTTUS EDWARD H ,  ORT MORRIS R

    IPC分类号： B01J37/34 ,  C08F4/64 ,  C08F10/00 ,  C08F36/04 ,  C25B3/12 ,  B01K3/00

    CPC分类号： C25B3/12 ,  B01J37/348 ,  C08F10/00 ,  C08F36/04 ,  C08F4/622 ,  C08F4/602 ,  C08F4/42 ,  C08F4/44

    摘要： AN ELECTROLYTIC PROCESS IS DESCRIBED FOR MAKING CERTAIN BIS-(HALOMETAL) METHANES SUCH AS BIS(DICHLOROALUMINUM) METHANE, CL2ALCH2ALCHL2, WHICH IS A NEW COMPOUND, AND THESE COMPOUNDS CAN BE COMBINED WITH TRANSITION METAL COMPOUNDS SUCH AS VOC13 TO MAKE VERY ACTIVE CATALYSTS FOR POLYMERIZING OLEFINIC COMPOUNDS SUCH AS ETHYLENE. IN THE ELECTROLYTIC PROCESS BORON, A GROUP II, GROUP III-A OR GROUP IV-A METAL, E.G., ALUMINUM, IS USED AS AN ANODE WITH AN ELECTROLYTE SUCH AS HOALCL2 IN THE PRESENCE OF A METHYLENE DIHALIDE SUCH AS CH2CL2 OR A GEM DIHALIDE WHICH DOES NOT READILY DEHYDROHALOGENATE OR ALKYLATE. IT IS PREFERRED TO CARRY OUT THE ELECTROLYSIS IN THE PRESENCE OF ETHYLENE OR ANOTHER OLEFINIC COMPOUND TO PROMOTE CONDUCTIVITY. ALSO, IT IS PREFERRED THAT ALL REACTANTS BE SUBSTANTIALLY FREE OF WATER, EXCEPT FOR SMALL KNOWN AMOUNTS OF WATER WHICH MAY BE ADDED TO PROMOTE ELECTROLYSIS. ALSO, IT IS PREFERED TO BLANKET THE ELECTROLYSIS WITH ETHYLENE WHICH ALSO SERVES TO PROMOTE CONDUCTIVITY, OR AN INERT GAS TO EXCLUDE MOISTURE, OXYGEN AND OTHER UNDESIRABLE MATERIALS. THE CATALYSTS POLYMERIZE OLEFINIC COMPOUNDS TO LIQUID OR SOLID POLYMERS DEPENDING ON THE PARTICULAR CATALYST USED AND THE OLEFIN BEING POLYMERIZED. THE CATALYSTS ARE PROMOTED OR MODIFIED BY SMALL AMOUNTS OF WATER OR OTHER ELECTRON DONOR COMPOUNDS.

    Polymerization of ethylene and catalysts therefor
    10.
    发明授权
    Polymerization of ethylene and catalysts therefor 失效
    乙烯和其催化剂的聚合

    公开(公告)号：US3674766A

    公开(公告)日：1972-07-04

    申请号：US3674766D

    申请日：1968-09-16

    申请人： MONSANTO CO

    发明人： MOTTUS EDWARD H ,  ORT MORRIS R

    IPC分类号： C08F4/68 ,  C08F10/02 ,  C08F1/32 ,  C08F3/06

    CPC分类号： C08F10/02 ,  Y10S526/905 ,  C08F4/622

    摘要： Catalysts useful for making ethylene polymers by polymerizing ethylene alone or with a comonomer in the presence of hydrogen are described. They consist essentially of a mixture of (1) a bromo and/or ioda aluminum compound, preferably of the formula WHEREIN X is a halogen atom with at least one X being a bromine or iodine atom or a mixture of such compounds with each other and p is O or 1 and (2) a compound of a transition metal of Groups III-B, IV-B, V-B, VI-B, VII-B, VIII or 1-B of the Periodic Table, preferably vanadium. The combined bromine or iodine renders the catalyst composition more sensitive to hydrogen employed for molecular weight control so that the ethylene polymers which are obtained at a given hydrogen partial pressure have a higher melt index than those which are obtained with the same type of organoaluminum compound which does not contain the specified bromine or iodine constituent. The polymerization can be carried out in the presence of an inert solvent such as hexane, or a halogenated compound such as dichloromethane or dibromomethane, at a pressure from about 2 to about 10 atmospheres and employing an electrondonating compound such as t-butanol or water to modify the catalyst.