公开(公告)号：US11125680B1

公开(公告)日：2021-09-21

申请号：US17148818

申请日：2021-01-14

Applicant: Chevron Phillips Chemical Company LP

Inventor： Qing Yang ,  Max P. McDaniel ,  Richard M. Buck ,  Tony R. Crain ,  Ryan N. Rose

IPC: G01N21/25 ,  G01N21/29 ,  C08F110/02 ,  C08L23/06 ,  C08L23/08 ,  B01J19/24 ,  B01J8/18 ,  C08F2/01 ,  B01J8/00

Abstract: Methods for determining the catalytic activity of an activated chemically-treated solid oxide using a color measurement technique are described, and these methods are integrated into transition metal-based catalyst preparation processes and systems, as well as into olefin polymerization processes and related polymerization reactor systems.

公开(公告)号：US20210078920A1

公开(公告)日：2021-03-18

申请号：US17013912

申请日：2020-09-08

Applicant: Chevron Phillips Chemical Company LP

Inventor： Carlos A. Cruz ,  Max P. McDaniel ,  Masud M. Monwar ,  Jared L. Barr

IPC: C07C2/84 ,  B01J37/16 ,  B01J38/00 ,  C07C4/06 ,  B01J23/26 ,  B01J21/08 ,  B01J21/06 ,  B01J35/02 ,  B01J35/10

Abstract: Processes for cracking an alkane reactant to form a lower aliphatic hydrocarbon product and for converting an alkane reactant into a higher aliphatic hydrocarbon product are disclosed, and these processes include a step of contacting the alkane reactant with a supported chromium (II) catalyst. In addition to the formation of various aliphatic hydrocarbons, such as linear alkanes, branched alkanes, 1-alkenes, and internal alkenes, aromatic hydrocarbons and hydrogen also can be produced.

公开(公告)号：US20210054178A1

公开(公告)日：2021-02-25

申请号：US16543686

申请日：2019-08-19

Applicant: Chevron Phillips Chemical Company LP

Inventor： Chung Ching Tso ,  Errun Ding ,  Randall S. Muninger ,  John T. Blagg ,  Yongwoo Inn ,  Max P. McDaniel ,  Ashish M. Sukhadia ,  Sarah Eppinger

IPC: C08L23/06 ,  C08F210/16 ,  C08F4/6592

Abstract: Ethylene polymers having a density from 0.908 to 0.925 g/cm3, a melt index from 0.5 to 3 g/10 min, a ratio of Mw/Mn from 2 to 4, a ratio of Mz/Mw from 1.6 to 2.3, a CY-a parameter from 0.45 to 0.6, and an ATREF profile characterized by a single peak at a peak ATREF temperature from 76 to 88° C., and by less than 4.5 wt. % of the polymer eluting above a temperature of 91° C. These ethylene polymers can be used to produce various articles of manufacture, such as blown and cast films with a beneficial combination of high tear resistance and low haze.

公开(公告)号：US10899855B2

公开(公告)日：2021-01-26

申请号：US16166224

申请日：2018-10-22

Applicant: Chevron Phillips Chemical Company LP

Inventor： Ashish M. Sukhadia ,  Max P. McDaniel ,  Errun Ding ,  Guylaine St. Jean ,  Qing Yang ,  Daniel G. Hert ,  Chung Ching Tso

IPC: C08L23/08 ,  C08F210/16 ,  C08F4/6592 ,  C08F10/02 ,  C08J5/18 ,  C08F210/02 ,  C08F4/659 ,  C08F210/08 ,  C08F210/14

Abstract: Disclosed herein are ethylene-based polymers produced using dual metallocene catalyst systems. These polymers have low densities, high molecular weights, and broad molecular weight distributions, as well as having the majority of the long chain branches in the lower molecular weight component of the polymer, and the majority of the short chain branches in the higher molecular weight component of the polymer. Films produced from these polymers have improved impact and puncture resistance.

公开(公告)号：US10894249B2

公开(公告)日：2021-01-19

申请号：US16907801

申请日：2020-06-22

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Kathy S. Clear ,  Jeremy M. Praetorius ,  Eric D. Schwerdtfeger ,  Mitchell D. Refvik ,  Mark L. Hlavinka

IPC: B01J31/02 ,  B01J31/34 ,  B01J35/10 ,  B01J37/02

Abstract: A method comprising a) contacting a solvent, a carboxylic acid, and a peroxide-containing compound to form an acidic mixture wherein a weight ratio of solvent to carboxylic acid in the acidic mixture is from about 1:1 to about 100:1; b) contacting a titanium-containing compound and the acidic mixture to form a solubilized titanium mixture wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid in the solubilized titanium mixture is from about 1:1 to about 1:4 and an equivalent molar ratio of titanium-containing compound to peroxide-containing compound in the solubilized titanium mixture is from about 1:1 to about 1:20; and c) contacting a chromium-silica support comprising from about 0.1 wt. % to about 20 wt. % water and the solubilized titanium mixture to form an addition product and drying the addition product by heating to a temperature in a range of from about 50° C. to about 150° C. and maintaining the temperature in the range of from about 50° C. to about 150° C. for a time period of from about 30 minutes to about 6 hours to form a pre-catalyst.

公开(公告)号：US20200316576A1

公开(公告)日：2020-10-08

申请号：US16907801

申请日：2020-06-22

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Kathy S. Clear ,  Jeremy M. Praetorius ,  Eric D. Schwerdtfeger ,  Mitchell D. Refvik ,  Mark L. Hlavinka

IPC: B01J31/02 ,  B01J31/34 ,  B01J37/02 ,  B01J35/10

Abstract: A method comprising a) contacting a solvent, a carboxylic acid, and a peroxide-containing compound to form an acidic mixture wherein a weight ratio of solvent to carboxylic acid in the acidic mixture is from about 1:1 to about 100:1; b) contacting a titanium-containing compound and the acidic mixture to form a solubilized titanium mixture wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid in the solubilized titanium mixture is from about 1:1 to about 1:4 and an equivalent molar ratio of titanium-containing compound to peroxide-containing compound in the solubilized titanium mixture is from about 1:1 to about 1:20; and c) contacting a chromium-silica support comprising from about 0.1 wt. % to about 20 wt. % water and the solubilized titanium mixture to form an addition product and drying the addition product by heating to a temperature in a range of from about 50° C. to about 150° C. and maintaining the temperature in the range of from about 50° C. to about 150° C. for a time period of from about 30 minutes to about 6 hours to form a pre-catalyst.

公开(公告)号：US20200255559A1

公开(公告)日：2020-08-13

申请号：US16863243

申请日：2020-04-30

Applicant: Chevron Phillips Chemical Company LP

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

IPC: C08F110/02 ,  B01J37/02 ,  B01J21/08 ,  B01J23/26 ,  C08F10/02 ,  B01J37/08

Abstract: A method of preparing a catalyst comprising a) contacting a titanium-containing compound, a solvating agent, and a solvent to form a solution; b) contacting the solution with a chrominated silica-support to form a pre-catalyst; and c) 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.

公开(公告)号：US20200239605A1

公开(公告)日：2020-07-30

申请号：US16839154

申请日：2020-04-03

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Mark L. Hlavinka ,  Kathy S. Clear

IPC: C08F10/02

Abstract: Methods for preparing supported chromium catalysts containing a chromium (III) compound and an activator-support are disclosed. These supported chromium catalysts can be used in catalyst compositions for the polymerization of olefins to produce polymers having low levels of long chain branching, and with greater sensitivity to the presence of hydrogen during polymerization.

公开(公告)号：US10662266B2

公开(公告)日：2020-05-26

申请号：US16260176

申请日：2019-01-29

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Mark L. Hlavinka ,  Kathy S. Clear

IPC: C08F4/69 ,  B01J31/34 ,  C08F10/02 ,  C08F4/639 ,  C08F4/6392

Abstract: Methods for preparing supported chromium catalysts containing a chromium (III) compound and an activator-support are disclosed. These supported chromium catalysts can be used in catalyst compositions for the polymerization of olefins to produce polymers having low levels of long chain branching, and with greater sensitivity to the presence of hydrogen during polymerization.

公开(公告)号：US10654948B2

公开(公告)日：2020-05-19

申请号：US13799471

申请日：2013-03-13

Applicant: Chevron Phillips Chemical Company LP

Inventor： Carlos A. Cruz ,  Qing Yang ,  Max P. McDaniel ,  Joel L. Martin ,  Tony R. Crain ,  Steve M. Wharry ,  Jared L. Barr ,  Youlu Yu

IPC: C08F10/02 ,  C08F4/659 ,  C08F110/02

Abstract: An ethylene polymer having a density greater than about 0.930 g/ml and 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. An ethylene polymer having a level of short chain branching ranging from about 0 to about 10 mol. % and 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. An ethylene polymer having a polydispersity index ranging from about 8 to about 25 and 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.