Patents by Inventor Max P. McDaniel

Max P. McDaniel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200199265
    Abstract: Disclosed herein are ethylene homopolymers generally characterized by a density of less than 0.94 g/cm3 and an inverse short chain branch distribution. These homopolymers can be further characterized by a ratio of Mw/Mn from 2 to 100, a number of short chain branches from 2 to 20 short chain branches per 1000 total carbon atoms, and wherein at least 50% of the short chain branches are methyl branches.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 25, 2020
    Inventors: Brooke L. Small, Max P. McDaniel, Matthew F. Milner, Paul J. DesLauriers
  • Publication number: 20200190227
    Abstract: Catalyst deactivating agents and compositions containing catalyst deactivating agents are disclosed. These catalyst deactivating agents can be used in methods of controlling polymerization reactions, methods of terminating polymerization reactions, methods of operating polymerization reactors, and methods of transitioning between catalyst systems.
    Type: Application
    Filed: February 26, 2020
    Publication date: June 18, 2020
    Inventors: Max P. McDaniel, Qing Yang, Kathy S. Clear, Tony R. Crain, Timothy O. Odi
  • Patent number: 10676553
    Abstract: Silica-coated alumina activator-supports, and catalyst compositions containing these activator-supports, are disclosed. Methods also are provided for preparing silica-coated alumina activator-supports, for preparing catalyst compositions, and for using the catalyst compositions to polymerize olefins.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: June 9, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Qing Yang, Randy S. Muninger, Elizabeth A. Benham, Kathy S. Clear
  • Patent number: 10676545
    Abstract: Catalyst deactivating agents and compositions containing catalyst deactivating agents are disclosed. These catalyst deactivating agents can be used in methods of controlling polymerization reactions, methods of terminating polymerization reactions, methods of operating polymerization reactors, and methods of transitioning between catalyst systems.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: June 9, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Qing Yang, Kathy S. Clear, Tony R. Crain, Timothy O. Odi
  • Patent number: 10669359
    Abstract: Methods for reinforcing chromium catalysts by the deposition of additional silica are disclosed herein. The resultant silica-reinforced chromium supported catalysts can be used to polymerize olefins to produce, for example, ethylene based homopolymers and copolymers with higher molecular weights and additional long chain branching.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: June 2, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Stephen L. Kelly
  • Patent number: 10669362
    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.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: June 2, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, Eric D. Schwerdtfeger, Jeremy M. Praetorius
  • Publication number: 20200164351
    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.
    Type: Application
    Filed: January 28, 2020
    Publication date: May 28, 2020
    Inventors: Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mitchell D. Refvik, Mark L. Hlavinka
  • Patent number: 10662266
    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.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: May 26, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Mark L. Hlavinka, Kathy S. Clear
  • Patent number: 10654948
    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.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 19, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Carlos A. Cruz, Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Steve M. Wharry, Jared L. Barr, Youlu Yu
  • Patent number: 10654953
    Abstract: A method of preparing a catalyst support comprising contacting an acid-soluble titanium-containing compound with an acid to form a first mixture; contacting the first mixture with an alkali metal silicate to form a hydrogel which has a silica content of from about 18 wt. % to about 35 wt. % based on the total weight of the hydrogel; contacting the hydrogel with an alkaline solution to form an aged hydrogel; washing the aged hydrogel to form a washed hydrogel; and drying the washed hydrogel to produce a titanium-containing-silica support wherein the support has a pore volume equal to or greater than about 1.4 cm3/g.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: May 19, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Eric D. Schwerdtfeger, Jeremy M. Praetorious
  • Publication number: 20200114343
    Abstract: A pre-catalyst composition comprising a) a silica support comprising silica wherein an amount of silica ranges from about 70 wt. % to about 95 wt. % based upon a total weight of the silica support, b) a chromium-containing compound wherein an amount of chromium ranges from about 0.1 wt. % to about 5 wt. % based upon the amount of silica, c) a titanium-containing compound wherein an amount of titanium ranges from about 0.1 wt. % to about 20 wt. % based upon the amount of silica, d) a carboxylic acid wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid ranges from about 1:1 to about 1:10, and e) a nitrogen-containing compound with a molecular formula containing at least one nitrogen atom wherein an equivalent molar ratio of titanium-containing compound to nitrogen-containing compound ranges from about 1:0.5 to about 1:10.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Inventors: Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mitchell D. Refvik, Mark L. Hlavinka
  • Publication number: 20200110027
    Abstract: A method of monitoring a solid component of a reactor feed stream in a polymer production system, comprising (a) measuring a turbidity of the reactor feed stream, wherein the reactor feed stream comprises a solid component of a polymerization catalyst system, and (b) translating the turbidity of the reactor feed stream into a concentration of the solid component in the reactor feed stream. A method of monitoring a solid component of a reactor feed stream in a polymer production system, comprising (a) measuring a turbidity of a precontactor feed stream, wherein the precontactor feed stream comprises a solid component of a polymerization catalyst system, and (b) translating the turbidity of the precontactor feed stream into a concentration of the solid component in a precontactor effluent stream, wherein the precontactor effluent stream comprises the reactor feed stream.
    Type: Application
    Filed: December 10, 2019
    Publication date: April 9, 2020
    Inventors: Eric D. Schwerdtfeger, Daniel G. Hert, Max P. McDaniel
  • Publication number: 20200101453
    Abstract: Disclosed herein are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with an inorganic base to form an aqueous mixture having a pH of at least 4, followed by contacting a solid oxide with the aqueous mixture to produce the fluorided solid oxide. Also disclosed are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with a solid oxide to produce a mixture, followed by contacting the mixture with a inorganic base to produce the fluorided solid oxide at a pH of at least about 4. The fluorided solid oxide can be used as an activator component in a catalyst system for the polymerization of olefins.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 2, 2020
    Inventors: Max P. McDaniel, Kathy S. Clear, Qing Yang, Tony R. Crain
  • Publication number: 20200095350
    Abstract: Processes for activating chromium polymerization catalysts, which can use lower maximum activation temperatures and shorter activation times than conventional activation methods, and provide polyethylenes with high melt indices, broader molecular weight distributions, and lower long chain branching content. The activation process can comprise heating a supported chromium catalyst in an inert atmosphere to a first temperature (T1) for a first hold time (tH1), followed by allowing the chromium catalyst to attain a second temperature (T2) in the inert atmosphere, then contacting the chromium catalyst with an oxidative atmosphere for a second hold time (tH2), in which T2 can be less than or equal to T1. Additional activation treatments and conditioning steps are disclosed which can be used to enhance the melt index potential of Phillips (Cr/silica) catalysts.
    Type: Application
    Filed: September 20, 2019
    Publication date: March 26, 2020
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, William C. Ellis, Deloris R. Gagan, Ted H. Cymbaluk
  • Publication number: 20200094225
    Abstract: Methods for making a supported chromium catalyst are disclosed, and can comprise contacting a silica-coated alumina containing at least 30 wt. % silica with a chromium-containing compound in a liquid, drying, and calcining in an oxidizing atmosphere at a peak temperature of at least 650° C. to form the supported chromium catalyst. The supported chromium catalyst can contain from 0.01 to 20 wt. % chromium, and typically can have a pore volume from 0.5 to 2 mL/g and a BET surface area from 275 to 550 m2/g. The supported chromium catalyst subsequently can be used to polymerize olefins to produce, for example, ethylene-based homopolymers and copolymers having high molecular weights and broad molecular weight distributions.
    Type: Application
    Filed: September 19, 2019
    Publication date: March 26, 2020
    Inventors: Max P. McDaniel, Kathy S. Clear
  • Publication number: 20200087430
    Abstract: Catalyst preparation systems and methods for preparing reduced chromium catalysts are disclosed, and can comprise irradiating a supported chromium catalyst containing hexavalent chromium with a light beam having a wavelength within the UV-visible light spectrum. Such reduced chromium catalysts have improved catalytic activity compared to chromium catalysts reduced by other means. The use of the reduced chromium catalyst in polymerization reactor systems and olefin polymerization processes also is disclosed, resulting in polymers with a higher melt index.
    Type: Application
    Filed: September 16, 2019
    Publication date: March 19, 2020
    Inventors: Kathy S. Clear, Max P. McDaniel, William C. Ellis, Eric D. Schwerdtfeger, Deloris R. Gagan, Carlos A. Cruz, Masud M. Monwar
  • Publication number: 20200086307
    Abstract: Supported chromium catalysts with an average valence less than +6 and having a hydrocarbon-containing or halogenated hydrocarbon-containing ligand attached to at least one bonding site on the chromium are disclosed, as well as ethylene-based polymers with terminal alkane, aromatic, or halogenated hydrocarbon chain ends. Another ethylene polymer characterized by at least 2 wt. % of the polymer having a molecular weight greater than 1,000,000 g/mol and at least 1.5 wt. % of the polymer having a molecular weight less than 1000 g/mol is provided, as well as an ethylene homopolymer with at least 3.5 methyl short chain branches and less than 0.6 butyl short chain branches per 1000 total carbon atoms.
    Type: Application
    Filed: September 16, 2019
    Publication date: March 19, 2020
    Inventors: Masud M. Monwar, Carlos A. Cruz, Jared L. Barr, Max P. McDaniel
  • Patent number: 10584088
    Abstract: Processes for producing an ?,?-unsaturated carboxylic acid, such as acrylic acid, or a salt thereof, using treated solid oxides are disclosed. The treated solid oxides can be calcined solid oxides, metal-treated solid oxides, or metal-treated chemically-modified solid oxides, illustrative examples of which can include sodium-treated alumina, calcium-treated alumina, zinc-treated alumina, sodium-treated sulfated alumina, sodium-treated fluorided silica-coated alumina, and similar materials.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: March 10, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Mark L. Hlavinka, Max P. McDaniel, Pasquale Iacono
  • Patent number: 10577440
    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.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: March 3, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Carlos A. Cruz, Max P. McDaniel, Qing Yang, Jared L. Barr, Youlu Yu
  • Patent number: 10543480
    Abstract: A pre-catalyst composition comprising a) a silica support comprising silica wherein an amount of silica ranges from about 70 wt. % to about 95 wt. % based upon a total weight of the silica support, b) a chromium-containing compound wherein an amount of chromium ranges from about 0.1 wt. % to about 5 wt. % based upon the amount of silica, c) a titanium-containing compound wherein an amount of titanium ranges from about 0.1 wt. % to about 20 wt. % based upon the amount of silica, d) a carboxylic acid wherein an equivalent molar ratio of titanium-containing compound to carboxylic acid ranges from about 1:1 to about 1:10, and e) a nitrogen-containing compound with a molecular formula containing at least one nitrogen atom wherein an equivalent molar ratio of titanium-containing compound to nitrogen-containing compound ranges from about 1:0.5 to about 1:10.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: January 28, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius, Eric D. Schwerdtfeger, Mitchell D. Refvik, Mark L. Hlavinka