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    Microcrystalline polyolefins and dispersions thereof
    1.
    发明授权
    Microcrystalline polyolefins and dispersions thereof 失效
    微晶聚合物及其分散体

    公开(公告)号：US3862069A

    公开(公告)日：1975-01-21

    申请号：US39773373

    申请日：1973-09-17

    申请人： FMC CORP

    发明人： CRUZ JR MAMERTO M ,  ERDI NICHOLAS Z ,  BATTISTA ORLANDO A

    IPC分类号： C08F8/50 ,  C08F45/52 ,  C08F3/10

    CPC分类号： C08J7/12 ,  C08J2323/12

    摘要： Chemically degraded, substantially atactic-free stereo-regular polyolefin resin exhibiting a sharp X-ray diffraction and distinctly modified thermal behavior compared to its precursor resin is disclosed herein. This material is readily mechanically attrited to obtain a product capable of forming a stable colloidal dispersion in a liquid medium having a minimal swelling action thereon. The chemically degraded polyolefin is prepared by a thermal catalytic oxidation treatment whereby the long chain polymers are considerably reduced in length by cleavage of the amorphous segments therein and the amorphous and atactic portions are removed by solvation.

    摘要翻译： 本文公开了与其前体树脂相比显示出尖锐X射线衍射和显着改变的热行为的化学降解的，基本上无立体的立体规则聚烯烃树脂。 该材料容易机械磨碎以获得能够在其上具有最小溶胀作用的液体介质中形成稳定的胶体分散体的产物。 通过热催化氧化处理制备化学降解的聚烯烃，由此长链聚合物的长度通过裂解其中的无定形链段而显着减少，并且通过溶剂化除去无定形部分和无规部分。

    Process for the polymerization of alpha-olefins
    2.
    发明授权
    Process for the polymerization of alpha-olefins 失效
    ALPHA-OLEFINS的聚合方法

    公开(公告)号：US3701766A

    公开(公告)日：1972-10-31

    申请号：US3701766D

    申请日：1971-03-17

    申请人： SOLVAY

    发明人： DELBOUILLE ANDRE ,  TOUSSAINT HENRI

    IPC分类号： C08F10/00 ,  C08F1/56 ,  C08F3/10

    CPC分类号： C08F10/00 ,  Y10S526/904 ,  C08F4/655

    摘要： POLYMERIZATION OF A-OLEFINS IS CARRIED OUT IN THE PRESENCE OF A SOLID CATALYST WHICH IS COMPOSED OF AN ORGANIC COMPOUND OF A METAL OF GROUPS I TO III OF THE PERIODIC TABLE AND A CRYSTALLINE HALIDE OF A REDUCED METAL OF GROUPS IVB, VB OR VIB OF THE PERIODIC TABLE DEPOSITED ON A PULVERULENT SUPPORT. THE REDUCED METAL HALIDE IS OBTAINED BY REDUCING A HALIDE OF THE METAL AT ITS MAXIMUM VALENCE WTH AN ORGANOMETALLIC COMPOUND AT A TEMPERATURE BELOW 0*C. AND IN THE ABSENCE OF LIQUID DILUENT WHEREIN THE HALIDE OF THE METAL AT ITS MAXIMUM VALENCE OR THE ORGANOMETALLIC COMPOUND HAS BEEN ABSORBED ON A SOLID PULVERULENT SUPPORT PRIOR TO THE REDUCTION. CATALYSTS PREPARED IN THIS MANNER HAVE A HIGH STEREOSPECIFICITY AND CATALYST ACTIVITY, AND POLYMERIZATION CARRIED OUT IN THE PRESENCE THEREOF YIELDS HIGHLY ISOTACTIC CRYSTALLINE POLYMER.

    Continuous process for the solution polymerization of olefinic monomers
    10.
    发明授权
    Continuous process for the solution polymerization of olefinic monomers 失效
    用于溶剂聚合烯烃单体的连续方法

    公开(公告)号：US3726849A

    公开(公告)日：1973-04-10

    申请号：US3726849D

    申请日：1970-01-19

    申请人： SHAW K ,  DANCE E

    发明人： DANCE E ,  SHAW K

    IPC分类号： C08F2/06 ,  C08F10/00 ,  C08F12/04 ,  C08F12/16 ,  C08F1/08 ,  C08F3/10

    CPC分类号： C08F12/16 ,  C08F2/06 ,  C08F10/00 ,  C08F12/04 ,  C08F110/02 ,  C08F110/06 ,  C08F4/625 ,  C08F4/6495 ,  C08F4/653 ,  C08F4/6496 ,  C08F4/642 ,  C08F2/00

    摘要： THIS INVENTION COMPRISES A PROCESS, AND APPARATUS USED THEREFOR, FOR CONTROLLING THE TYPE OF POLYMER PRODUCT PRODUCED DURING SOLUTION POLYMERIZATION OF AN OLEFIN, SUCH AS PROPYLENE, BY MAKING CERTAIN ADJUSTMENTS IN OPERATING CONDITIONS AND MAKING AN ADJUSTMENT IN THE RATE OF INTRODUCING THE MONOMER FEED STREAM TO COMPENSATE FOR THE OVERALL EFFECT OF THESE VRIOUS OTHER ALTERATIONS OF CONDITONS ON THE TEMPERATURE OF THE POLYMERIZATION MIXTURE, THE RATE OF INTRODUCTION OF THE MONOMER FEED STREAM BEING DECREASED WHEN THIS TEMPERATURE FALLS BELOW A PRESELECTED TEMPERATURE AND THIS RATE OF INTRODUCTION BEING INCREASED WHEN THIS TEMPERATURE RISES ABOVE THE PRESELECTED TEMPERATURE. ONE OR MORE ADJUSTMENTS WHICH CAN BE MADE, AND FOR COMPENSATION OF WHICH THE ABOVE OVERALL ADJUSTMENT IS MADE ARE: (A) DECREASING OR INCREASING THE RATIO OF MONOMER TO SOLVENT IN THE MONOMER FEED STREAM AS THE MOLECULAR WEIGHT OF THE PRODUCT IS DETERMINED TO BE ABOVE OR BELOW RESPECTIVELY THE DESIRED MOLECULAR WEIGHT, (B) LOWERING OR RAISING THE TEMPERATURE OF THE MONOMER FEED STREAM AS THE PERCENT OF POLYMER IN THE EFFLUENT STREAM IS DETERMINED TO BE BELOW OR ABOVE RESPECTIVELY THE DESIRED PERCENTAGE, AND (C) INCREASING OR DECREASING THE RATE OF INTRODUCTION OF THE CATALYST FEED STREAM AS THE PRODUCTION RATE OF THE POLYMER IS DETERMINED TO BE BELOW OR ABOVE THE DESIRED PRODUCTION RATE.