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    Process for polymerizing isoprene in contact with a three-component catalyst prepared from ticl4,alr2cl and particular silanes
    2.
    发明授权
    Process for polymerizing isoprene in contact with a three-component catalyst prepared from ticl4,alr2cl and particular silanes 失效
    与由TICL4，ALR2CL和特殊硅烷制备的三元组分催化剂接触异丙烯的方法

    公开(公告)号：US3557076A

    公开(公告)日：1971-01-19

    申请号：US3557076D

    申请日：1968-01-10

    Applicant: MONTEDISON SPA

    Inventor： BONFARDECI AUGUSTO ,  PORRI LIDO

    IPC: C08F36/04 ,  C08D3/10

    CPC classification number: C08F36/04 ,  C08F4/6421

    Abstract: IN SUMMARY, ISOPRENE IS POLYMERIZED, IN ACCORDANCE WITH THIS INVENTION, TO A POLYISOPRENE HAVING ELASTIC AND MECHANICAL PROPERTIES PRACTICALLY IDENTICAL WITH THOSE OF NATURAL RUBBER, BY SUBJECTING THE MONOMER TO POLYMERIZING CONDITIONS IN CONTACT WITH A CATALYST PREPARED FROM THE THREE COMPONENTS: (1) TITANIUM TETRACHLORIDE (2) AN ORGANOMETALLIC COMPOUND ALR2CL IN WHICH R IS AN ALKYL GROUP CONTAINING 1 TO 6 CARBON ATOMS; AND (3) A SILICIUM COMPOUND OF THE FORMULA RASI(OR'')B WHEREIN R AND R'' ARE THE SAME OR DIFFERENT ALKYL GROUPS; A IS ZERO OR A WHOLE NUMBER FROM 1 TO 3; AND B IS A WHOLE NUMBER FROM 1 TO 4, A+B BEING EQUAL TO 4.

    Homogeneous polymerization catalysts based on cobalt, and polymerization of diolefins therewith
    3.
    发明授权
    Homogeneous polymerization catalysts based on cobalt, and polymerization of diolefins therewith 失效
    基于钴的均相聚合催化剂和与其的二烯烃聚合

    公开(公告)号：US3016371A

    公开(公告)日：1962-01-09

    申请号：US79473059

    申请日：1959-02-20

    Applicant: MONTEDISON SPA

    Inventor： NATTA GIULIO ,  PORRI LIDO ,  FIORE LEONARDO

    IPC: C08F4/12 ,  C08F4/26 ,  C08F136/04 ,  C08K5/37

    CPC classification number: C08F136/04 ,  C08F4/12 ,  C08K5/37 ,  C08F4/7096 ,  C08L9/00

    Abstract: A catalyst which is stereospecific in respect of polymerizing butadiene to the cis-1:4-structure comprises a hydrocarbon soluble cobalt dinitrosyl halide (excluding the fluoride) and a Group II or III organometallic compound (e.g. of Al, Be, Zn, Ng or Ca, such as Al dialkyl monochloride, specifically AlEt2Cl) in a hydrocarbon solvent which may be aliphatic (e.g. propane, butane or n-heptane) or aromatic (e.g. benzene) or monomeric butadiene. Preferably the concentration of Co compound does not exceed 0,2 millimols per litre of solvent. Specifications 833,831 and 873,046 are referred to.

    Abstract translation: 关于将丁二烯聚合成顺式-1,4-结构的立体定向催化剂包括烃溶性二钴二卤化二卤化物（不包括氟化物）和II或III族有机金属化合物（例如Al，Be，Zn，Ng或 （例如丙烷，丁烷或正庚烷）或芳族（例如苯）或单体丁二烯的烃溶剂中的Ca，如Al二烷基一氯化物，特别是AlEt 2 Cl）。 优选地，Co化合物的浓度不超过0.2毫摩尔/升溶剂。 参考规格833,831和873,046。

    Process for polymerizing isoprene
    4.
    发明授权
    Process for polymerizing isoprene 失效
    聚合异丙酚的方法

    公开(公告)号：US3560473A

    公开(公告)日：1971-02-02

    申请号：US3560473D

    申请日：1968-09-18

    Applicant: MONTEDISON SPA

    Inventor： BONFARDECI AUGUSTO ,  PORRI LIDO

    IPC: C08F136/08 ,  C08D3/10

    CPC classification number: C08F136/08 ,  C08F4/642

    Abstract: ISOPRENE IS POLYMERIZED TO HIGH MOLECULAR WEIGHT POLYISOPRENE HAVING SUBSTANTIALLY CIS-1,4 STRUCTURE PRACTICALLY IDENTICAL WITH THAT OF NATURAL RUBBER, USING TERNARY CATALYTIC SYSTEMS PREPARED FROM TITANIUM TETRA-ALKOXIDES, ORGANOMETALLIC COMPOUNDS OF ALUMINUM, AND A SILICON COMPOUND.

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