知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

34 条记录 (耗时 0.108 秒)

    Large pore silica gel catalysts
    1.
    发明授权
    Large pore silica gel catalysts 失效
    大型二氧化硅凝胶催化剂

    公开(公告)号：US3862104A

    公开(公告)日：1975-01-21

    申请号：US40637073

    申请日：1973-10-15

    申请人： PHILLIPS PETROLEUM CO

    发明人： WITT DONALD R

    IPC分类号： B01J23/26 ,  C08F4/22 ,  C08F10/00 ,  C08F1/66 ,  C08F3/02

    CPC分类号： B01J23/26 ,  C08F10/00 ,  C08F4/22

    摘要： A method of producing the silica-containing support for a polymerization catalyst which involves precipitating the silica hydrogel employing an ammonium salt and removing the water from the hydrogel by employing an oxygen-containing organic compound.

    摘要翻译： 一种制备用于聚合催化剂的含二氧化硅的载体的方法，其包括使用铵盐沉淀二氧化硅水凝胶并通过使用含氧有机化合物从水凝胶中除去水。

    Process for preparing solid telomers and cotelomers
    2.
    发明授权
    Process for preparing solid telomers and cotelomers 失效
    制造实体拖拉机和助手的方法

    公开(公告)号：US3836515A

    公开(公告)日：1974-09-17

    申请号：US23755972

    申请日：1972-03-23

    申请人： RHONE PROGIL

    发明人： TREBILLON E ,  WETROFF G

    IPC分类号： C08F2/00 ,  C08F214/06 ,  C08F1/66

    CPC分类号： C08F214/06

    摘要： THE PREPARATION OF SOLID TELOMERS AND COTELOMERS BY HEATING A MIXTURE OF VINYL CHLORIDE OR COMONOMERS CONTAINING AT LEAST 30% BY WEIGHT VINYL CHLORIDE, AND AT LEAST ONE HALOGENATED ORGANIC DERIVATIVE HAVING A MOBILE HALOGEN, IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, BARIUM, CHROMIUM, NICKEL, ZINC, MERCURY, SILICON, TIN AND LEAD, AND A POLAR SOLVENT WHICH IS AT LEAST PARTIALLY MISCIBLE WITH THE HALOGENATED ORGANIC DERIVATIVE/MONOMER MIXTURE.

    Catalyst for and method of preparing ultra high molecular weight polyolefins
    3.
    发明授权
    Catalyst for and method of preparing ultra high molecular weight polyolefins 失效
    催化剂和制备超高分子量聚烯烃的方法

    公开(公告)号：US3882096A

    公开(公告)日：1975-05-06

    申请号：US39433073

    申请日：1973-09-04

    申请人： CHEMPLEX CO

    发明人： SHIDA MITSUZO ,  PULLUKAT THOMAS J ,  HOFF RAYMOND E

    IPC分类号： C08F4/24 ,  C08F110/02 ,  C08F1/66 ,  C08F3/06

    CPC分类号： C08F110/02 ,  C08F4/76

    摘要： A catalyst active for polymerizing ethylene to an ultra high molecular weight (UHMW) polymer prepared by forming a hydrogel mixture of a porous support of silica, alumina, zirconia, thoria or mixtures thereof, about 1-200 weight percent of water and chromium oxide in an amount to give about 0.1-50 weight percent of chromium on the support, adding to this mixture an alkyl ester of titanium in an amount to give about 1-130 weight percent of titanium on the support with the ester containing 1-7 carbon atoms in each alkyl group and activating the resulting mixture with a dry gas that contains oxygen and at the customary elevated temperature. An initial reaction product of the titanium ester and water is titanium hydroxide (or hydrated titanium dioxide) formed in the pores of the support. The heat of activating tends to dehydrate this to titanium dioxide. The disclosure also includes the method of making ultra high molecular weight polyethylene by polymerizing monomers containing ethylene under polymerizing conditions with the above catalyst.

    摘要翻译： 用于将乙烯聚合成通过形成二氧化硅，氧化铝，氧化锆，氧化钍或其混合物的多孔载体的水凝胶混合物制备的超高分子量（UHMW）聚合物的催化剂，约1-200重量％的水和氧化铬 在载体上给出约0.1-50重量％的铬的量，向该混合物中加入钛的烷基酯，其量使得在含有1-7个碳原子的酯的载体上得到约1-130重量％的钛 并且在常规升高的温度下用含氧的干燥气体活化所得混合物。 钛酯和水的初始反应产物是在载体的孔中形成的氢氧化钛（或水合二氧化钛）。 活化的热倾向于使其脱水成二氧化钛。 本公开还包括通过在聚合条件下与上述催化剂聚合含乙烯的单体制备超高分子量聚乙烯的方法。

    Controlling polymerization of comonomer in copolymerization
    5.
    发明授权
    Controlling polymerization of comonomer in copolymerization 失效
    控制共聚物中共聚物的聚合

    公开(公告)号：US3658777A

    公开(公告)日：1972-04-25

    申请号：US3658777D

    申请日：1969-09-12

    申请人： PHILLIPS PETROLEUM CO

    发明人： GREEN WILLIAM B

    IPC分类号： C08F10/00 ,  C08F1/66 ,  C08F1/82 ,  C08F15/04

    CPC分类号： C08F10/00 ,  C08F4/22

    摘要： THE POLYMERIZATION OF COMONOMER IN A COPOLYMERIZATION AS IN THE COPOLYMERIZATION OF ETHYLENE AND BUTENE-1 IS CONTROLLED BY INCREASING THE METAL ALKYL IN THE REACTION ZONE. IN ONE EMBODIMENT THE CHANGEOVER TIME IN A PLANT WHEN DESIRING TO PRODUCE A HOMOPOLYMER OF A 1-OLEFIN WITHOUT PLANT SHUTDOWN WHEN IT HAS BEEN PRODUCING A 1OLEFIN-OLEFIN COMONOMER COPOLYMER IS REDUCED BY ADDING TO THE INFLUENT TO THE REACTION ZONE, ABOUT WHEN THE COMONOMER FLOW HAS BEEN DISCONTINUED, A METAL ALKYL WHICH INHIBITS THE COPOLYMERIZATION OF THE COMONOMER WITH THE 1-OLEFIN. IN AN EMBODIMENT THE CHANGEOVER IS FROM ETHYLENE-1-BUTENE COPOLYMERIZATION TO EHTYLENE HOMOPOLYMERIZATION AND THE CATALYST IS A CHROMINUM OXIDE IN WHICH AT LEAST PART OF THE CHROMIUM IS IN THE HEXAVALENT STATE AND IS SUPPORTED ON AT LEAST ONE MATERIAL TAKEN FROM SILICA, ALUMINA, ZIRCONIA AND THORIA AND THE METAL ALKYL IS DIETHYL ZINC ALONE OR TOGETHER WITH TRIETHYL BORANE. THE AMOUNT OF THE ADDITIVE OR ADDITIVE MIXTURE IS DETERMINED TO INHIBIT SUBSTANTIALLY THE COPOLYMERIZATION OF THE COMONOMER UNTIL THE AMOUNT OF IT IN THE REACTOR HAS BEEN REDUCED TO AN EXTENT SUFFICIENT TO PERMIT SUBSTANTIALLY SPECIFICATION HOMOPOLYMER TO BE PRODUCED. THE USUAL RATES WHEN ADDING DIETHYL ZINC TO INCREASE THE SHEAR RESPONSE OF THE POLYMER BEING MADE ARE UP TO ABOUT ONE-THREE POUNDS PER HUNDRED POUNDS OF THE CATALYST. THE AMOUNT ACCORDING TO THE INVENTION EXCEEDS APPRECIABLY THIS AMOUNT AND USUALLY IS IN THE APPROXIMATE RANGE FIVE-TEN POUNDS PER HUNDRED POUNDS OF CATALYST. THE INVENTION PERMITS A CONTROL OF THE PROPORTION OF COMONOMER ENTERING INTO THE COPOLYMER BEING FORMED INDEPENDENTLY OF ADJUSTMENT OF THE PORTION OF THE COMONOMER IN THE FEED TO THE REACTOR.

    Polymerization catalyst and process using a chloride treated supported molybdenum oxide
    10.
    发明授权
    Polymerization catalyst and process using a chloride treated supported molybdenum oxide 失效
    聚合催化剂和使用氯化物处理的支持的氧化钼的方法

    公开(公告)号：US3793263A

    公开(公告)日：1974-02-19

    申请号：US3793263D

    申请日：1972-02-14

    申请人： STANDARD OIL CO

    发明人： MORRIS R

    IPC分类号： C08F4/22 ,  C08F10/00 ,  C08F3/06 ,  C08F1/66 ,  C08F15/04

    CPC分类号： C08F10/00 ,  C08F4/22

    摘要： AAN IMPROVED COMPOSITION OF MATTER USEFUL, WHEN PROMOTED BY CERTAIN METALS OR THEIR HYDRIDES, FOR CATALYZING THE POLYMERIZATION OF ETHYLENE AND MIXTURES THEREOF WITH MINOR AMOUNTS OF PROPYLENE TO PRODUCE NORMALLY SOLID, CRYSTALLINE POLYMERS AND COPOLYMERS WHICH IS MADE BY A PROCESS COMPRISING CONTACTING A PARTIALLY REDUCED, ALUMINA-SUPPORTED MOLYBDENUM (VI) COMPOUND WITH A CHLORINE-CONTACTING SUBSTANCE THAT IS CAPABLE OF REMOVING A MAJORITY OF THE MOLYBDENUM, CALCULATED AS MOO3.