中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

34 records (took 0.026 seconds)

    CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS
    3.
    发明专利
    CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS 未知

    公开(公告)号：MY145575A

    公开(公告)日：2012-02-29

    申请号：MYPI20040928

    申请日：2004-03-17

    Applicant: BASELL POLIOLEFINE SPA

    Inventor： DIEGO BRITA ,  GIANNI COLLINA ,  MORINI GIAMPIERO ,  VITALE GIANNI

    IPC: C08F4/42

    Abstract: A CATALYST COMPONENT FOR OLEFIN (CO)POLYMERIZATION, AND IN PARTICULAR FOR THE PREPARATION OF LLDPE, COMPRISING Mg, Ti, HALOGEN AND AN ELECTRON DONOR COMPOUND (ED) BELONGING TO ETHERS, ESTER, AMINES,KETONES, OR NITRILES, CHARACTERIZED IN THAT THE MOLAR RATIO Mg/Ti IS HIGHER THAN 5, AND THE MOLAR RATIO ED/Ti IS HIGHER THAN 3.5. THE SAID CATALYST COMPONENTS DISPLAY A HOMOGENEOUS DISTRIBUTION OF THE COMONOMER IN AND AMONG THE COPOLYMER CHAINS.

    5.
    发明专利
    未知

    公开(公告)号：DE69921918D1

    公开(公告)日：2004-12-23

    申请号：DE69921918

    申请日：1999-03-18

    Applicant: BASELL POLIOLEFINE SPA

    Inventor： GOVONI GABRIELE ,  SACCHETTI MARIO ,  VITALE GIANNI

    IPC: C08F4/647 ,  C08F4/654 ,  C08F4/657 ,  C08F10/00 ,  C08F10/06 ,  C08F10/10

    Abstract: The invention provides new prepolymerized catalyst components for the (co)polymerization of olefins CH 2 =CHR, wherein R is hydrogen or a C1-C12 alkyl group, characterized by comprising a solid catalyst component, comprising Mg, Ti, halogen and an electron donor compound chosen among alkyl, cycloalkyl or aryl esters of polycarboxylic acids obtained by reacting, in the presence of said electron donor compound a titanium compound of formula Ti(OR)n-yXy, where n is the valence of titanium and y is a number between 1 and n, and R has the meaning given above, with an adduct of formula MgCl 2 €¢pROH, where p is a number between 0,1 and 6 and R is a hydrocarbon radical having 1-18 carbon atoms, said catalyst component being capable of yielding under standard propylene polymerization conditions a propylene homopolymer having an insolubility in xylene at 25°C higher than 90%, and being prepolymerized with ethylene to such an extent that the amount of the ethylene prepolymer is up to 100g per g of said solid catalyst component. These such catalyst components allow to obtain a high catalyst activity, a high isotactic index and are not affected by aging.

    6.
    发明专利
    未知

    公开(公告)号：AT282641T

    公开(公告)日：2004-12-15

    申请号：AT99915659

    申请日：1999-03-18

    Applicant: BASELL POLIOLEFINE SPA

    Inventor： GOVONI GABRIELE ,  SACCHETTI MARIO ,  VITALE GIANNI

    IPC: C08F4/647 ,  C08F4/654 ,  C08F4/657 ,  C08F10/00 ,  C08F10/06 ,  C08F10/10

    Abstract: The invention provides new prepolymerized catalyst components for the (co)polymerization of olefins CH 2 =CHR, wherein R is hydrogen or a C1-C12 alkyl group, characterized by comprising a solid catalyst component, comprising Mg, Ti, halogen and an electron donor compound chosen among alkyl, cycloalkyl or aryl esters of polycarboxylic acids obtained by reacting, in the presence of said electron donor compound a titanium compound of formula Ti(OR)n-yXy, where n is the valence of titanium and y is a number between 1 and n, and R has the meaning given above, with an adduct of formula MgCl 2 €¢pROH, where p is a number between 0,1 and 6 and R is a hydrocarbon radical having 1-18 carbon atoms, said catalyst component being capable of yielding under standard propylene polymerization conditions a propylene homopolymer having an insolubility in xylene at 25°C higher than 90%, and being prepolymerized with ethylene to such an extent that the amount of the ethylene prepolymer is up to 100g per g of said solid catalyst component. These such catalyst components allow to obtain a high catalyst activity, a high isotactic index and are not affected by aging.

    7.
    发明专利
    未知

    公开(公告)号：ES2212560T3

    公开(公告)日：2004-07-16

    申请号：ES99924843

    申请日：1999-04-29

    Applicant: BASELL POLIOLEFINE SPA

    Inventor： MORINI GIAMPIERO ,  BALBONTIN GIULIO ,  VITALE GIANNI

    IPC: C08F4/02 ,  C08F4/60 ,  C08F4/651 ,  C08F4/654 ,  C08F10/00

    Abstract: The present invention relates to catalyst components for the polymerization of olefins having Mg, Ti, halogen and at least two internal electron donor compounds, said catalyst components characterized by the fact that at least one of the electron donor compounds is selected from ethers containing two or more ether groups which are further characterized by the formation of complexes with anhydrous magnesium dichloride in an amount less than 60 mmoles per 100 g of MgCl2 and by the failure of entering into substitution reactions with TiCl4 or by reacting in that way for less than 50% by moles, and at least another electron donor compound selected from esters of mono or polycarboxylic acids. Said catalyst components are able to produce propylene polymers which, for high values of xylene insolubility, show a broad range of isotacticity.

    10.
    发明专利
    未知

    公开(公告)号：BR0303381A

    公开(公告)日：2004-03-30

    申请号：BR0303381

    申请日：2003-02-28

    Applicant: BASELL POLIOLEFINE SPA

    Inventor： VITALE GIANNI ,  CIMARELLI MASSIMO ,  MORINI GIAMPIERO ,  CABRINI LEO

    IPC: C08F10/00 ,  C08F4/634 ,  C08F4/651 ,  C08F4/654 ,  C08F110/06

    Abstract: A process for preparing a diether-based catalyst component in which: a) a slurry is obtained by contacting a solid support comprising a magnesium halide or a precursor thereof, one or more 1,3-diethers and a liquid phase containing a titanium compound, and b) the obtained slurry is then subjected to a solid/liquid separation step in order to isolate a diether-based catalyst component; said separation step b) being characterized in that the ratio between the solid/liquid separation velocity and the final amount of separated solid must be higher than 0.5 liter/(min.Kg).

Patent Agency Ranking