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    3.
    发明专利
    未知

    公开(公告)号：PL211226A1

    公开(公告)日：1979-08-27

    申请号：PL21122678

    申请日：1978-11-25

    Applicant: STANDARD OIL CO

    Inventor： HOFF GLEN R ,  MELQUIST JOHN L ,  FOTIS PETER

    IPC: B01J8/10 ,  B01J8/36 ,  B01J8/38 ,  B01J19/18 ,  C08F2/00 ,  C08F2/34 ,  C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F

    Abstract: Vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising recycled quench liquid, reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form a resinous polymer of an olefin having a low level of catalyst residues.

    HIGH ACTIVITY CATALYST FOR THE POLYMERIZATION OF ALPHA-OLEFINS
    4.
    发明专利
    HIGH ACTIVITY CATALYST FOR THE POLYMERIZATION OF ALPHA-OLEFINS 未知

    公开(公告)号：CA1142906A

    公开(公告)日：1983-03-15

    申请号：CA342554

    申请日：1979-12-24

    Applicant: STANDARD OIL CO

    Inventor： HOFF GLEN R ,  FOTIS PETER

    IPC: C08F10/00 ,  C08F4/60

    Abstract: High activity alpha-olefin polymerization catalysts comprising an organometallic promoter and a component prepared from at least one compound of a Group IVB, VB, or VIB metal, at least one support material which is a divalent metal salt of a phosphorus acid ester having at least one phosphorus acid ester group bonded to metal through oxygen or sulfur, and at least one alkylaluminum halide.

    7.
    发明专利
    未知

    公开(公告)号：DD140050A5

    公开(公告)日：1980-02-06

    申请号：DD20930678

    申请日：1978-11-24

    Applicant: STANDARD OIL CO

    Inventor： HOFF GLEN R ,  MELQUIST JOHN L ,  FOTIS PETER

    IPC: B01J8/10 ,  B01J8/36 ,  B01J8/38 ,  B01J19/18 ,  C08F2/00 ,  C08F2/34 ,  C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F10/02

    Abstract: Vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising recycled quench liquid, reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form a resinous polymer of an olefin having a low level of catalyst residues.

    INCREASING THE PARTICLE SIZE OF FORMED POLYETHYLENE OR ETHYLENE COPOLYMER
    9.
    发明专利
    INCREASING THE PARTICLE SIZE OF FORMED POLYETHYLENE OR ETHYLENE COPOLYMER 未知

    公开(公告)号：CA1084033A

    公开(公告)日：1980-08-19

    申请号：CA265325

    申请日：1976-11-10

    Applicant: STANDARD OIL CO

    Inventor： HOFF GLEN R

    IPC: C08F10/00 ,  C08F4/66 ,  C08F4/68

    Abstract: INCREASING THE PARTICLE SIZE OF AS FORMED POLYETHYLENE OR ETHYLENE COPOLYMER The particle size of as formed polyethylene or ethylene copolymer containing up to about twenty percent of a C3 to C8 olefin can be increased by using a high yield, solid catalyst component prepared from (1) a magnesium alkoxide, (2) a titanium (IV) or vanadium (V) chloride, chloroalkoxide or alkoxide, (3) an alkylaluminum compound, and (4) hydrogen chloride. The particle size of as formed polymer can be increased substantially using the hydrogen-chloride-prepared catalyst component, compared to the particle size of polymer made using a similar catalyst component prepared without the use of hydrogen chloride, when either is employed with an alkylaluminum compound promoter in a slurry or vapor phase polymerization process at moderate polymerization temperatures and pressures.

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