中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

379 records (took 0.039 seconds)

    Radically coupled resins and methods of making and using same
    31.
    发明授权
    Radically coupled resins and methods of making and using same 有权

    公开(公告)号：US10577440B2

    公开(公告)日：2020-03-03

    申请号：US14933847

    申请日：2015-11-05

    Applicant: Chevron Phillips Chemical Company LP

    Inventor： Carlos A. Cruz ,  Max P. McDaniel ,  Qing Yang ,  Jared L. Barr ,  Youlu Yu

    IPC: C08F10/02

    Abstract: A radically coupled polymer having a density of from about 0.915 g/ml to about 0.975 g/ml characterized by a crossover modulus measured in Pascals (Pa) that is equal to or less than ymn where ymn=180,000e−0.15x and x is the number average molecular weight of the radically coupled polymer divided by 1,000. An ethylene polymer having a level of short chain branching ranging from about 0 to about 10 mol. %; a level of long chain branching ranging from about 0.001 LCB/103 carbons to about 1.5 LCB/103 carbons as determined by SEC-MALS; and characterized by a crossover modulus measured in Pa that is equal to or less than ymn where ymn=180,000−0.15x and x is the number average molecular weight of the radically coupled polymer divided by 1,000.

    METHODS OF PREPARING A CATALYST
    32.
    发明申请
    METHODS OF PREPARING A CATALYST 审中-公开

    公开(公告)号：US20200010587A1

    公开(公告)日：2020-01-09

    申请号：US16571281

    申请日：2019-09-16

    Applicant: Chevron Phillips Chemical Company LP

    Inventor： Max P. McDaniel ,  Kathy S. Clear ,  Eric D. Schwerdtfeger ,  Jeremy M. Praetorius

    IPC: C08F110/02

    Abstract: A method of preparing a catalyst comprising a) contacting a non-aqueous solvent, a carboxylic acid, and a chromium-containing compound to form an acidic mixture; b) contacting a titanium-containing compound with the acidic mixture to form a titanium treatment solution; c) contacting a pre-formed silica-support comprising from about 0.1 wt. % to about 20 wt. % water with the titanium treatment solution to form a pre-catalyst; and d) thermally treating the pre-catalyst to form the catalyst. A method of preparing a catalyst comprising a) contacting a non-aqueous solvent and a carboxylic acid to form an acidic mixture; b) contacting a titanium-containing compound with the acidic mixture to form a titanium treatment solution; c) contacting a pre-formed chrominated silica-support comprising from about 0.1 wt. % to about 20 wt. % water with the titanium treatment solution to form a pre-catalyst; and d) thermally treating the pre-catalyst to form the catalyst.

    Methods of preparing a catalyst
    33.
    发明授权
    Methods of preparing a catalyst 有权

    公开(公告)号：US10513570B2

    公开(公告)日：2019-12-24

    申请号：US15816145

    申请日：2017-11-17

    Applicant: Chevron Phillips Chemical Company LP

    Inventor： Max P. McDaniel ,  Kathy S. Clear ,  Eric D. Schwerdtfeger ,  Jeremy M. Praetorius

    IPC: C08F110/02 ,  B01J37/08 ,  B01J37/02 ,  B01J21/06 ,  B01J21/08 ,  B01J23/26 ,  C08F4/18 ,  C08F4/24

    Abstract: A method of preparing a catalyst comprising a) contacting a non-aqueous solvent, a carboxylic acid, and a chromium-containing compound to form an acidic mixture; b) contacting a titanium-containing compound with the acidic mixture to form a titanium treatment solution; c) contacting a pre-formed silica-support comprising from about 0.1 wt. % to about 20 wt. % water with the titanium treatment solution to form a pre-catalyst; and d) thermally treating the pre-catalyst to form the catalyst. A method of preparing a catalyst comprising a) contacting a non-aqueous solvent and a carboxylic acid to form an acidic mixture; b) contacting a titanium-containing compound with the acidic mixture to form a titanium treatment solution; c) contacting a pre-formed chrominated silica-support comprising from about 0.1 wt. % to about 20 wt. % water with the titanium treatment solution to form a pre-catalyst; and d) thermally treating the pre-catalyst to form the catalyst.

    Methods of preparing a catalyst
    40.
    发明授权
    Methods of preparing a catalyst 有权

    公开(公告)号：US09988468B2

    公开(公告)日：2018-06-05

    申请号：US15281538

    申请日：2016-09-30

    Applicant: Chevron Phillips Chemical Company LP

    Inventor： Max P. McDaniel ,  Eric D. Schwerdtfeger ,  Jeremy M. Praetorius ,  Alan L. Solenberger ,  Kathy S. Clear

    IPC: C08F110/02 ,  C08F10/02

    CPC classification number: C08F110/02 ,  C08F10/02 ,  C08F4/22 ,  C08F4/16 ,  C08F4/025 ,  C08F2500/04 ,  C08F2500/12 ,  C08F210/16 ,  C08F210/14

    Abstract: A method of preparing a catalyst comprising a) contacting (i) a silica-support, (ii) an oxotitanium compound, (iii) a chromium-containing compound, and (iv) an optional solvent to form a first aqueous mixture comprising a pre-catalyst and a reaction media having from about 1 wt. % to about 99 wt. % water; b) thermally treating the pre-catalyst by heating to a temperature of from about 400° C. to about 1000° C. for a time period of from about 1 minute to about 24 hours to form the catalyst. A method of preparing a catalyst comprising contacting a hydrated support material comprising silica with a chromium-containing compound to form a first aqueous mixture comprising a chrominated support; contacting the first aqueous mixture comprising a chrominated support with a solution comprising (i) a solvent and (ii) an oxotitanium compound to form a second aqueous mixture comprising a pre-catalyst; and thermally treating the pre-catalyst to form the catalyst.

Patent Agency Ranking