Patents by Inventor Daniel Paul Zilker
Daniel Paul Zilker 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).
-
Patent number: 8742041Abstract: Processes for the polymerization of olefins with extracted metal carboxylate salts are provided. The polymerization processes have increased productivity and/or increased resin bulk density.Type: GrantFiled: November 10, 2011Date of Patent: June 3, 2014Assignee: Univation Technologies, LLCInventors: R. Eric Pequeno, Fathi David Hussein, Kevin Joseph Cann, Chi-I Kuo, Bruce Jon Savatsky, Eric J. Markel, Daniel Paul Zilker, Jr., Agapios Kyriacos Agapiou, David M. Glowczwski
-
Publication number: 20130253153Abstract: Processes for the polymerization of olefins with extracted metal carboxylate salts are provided. The polymerization processes have increased productivity and/or increased resin bulk density.Type: ApplicationFiled: November 10, 2011Publication date: September 26, 2013Applicant: UNIVATION TECHNOLOGIES, LLCInventors: R. Eric Pequeno, Fathi David Hussein, Kevin Joseph Cann, Chi-I Kuo, Bruce Jon Savatsky, Eric J. Markel, Daniel Paul Zilker, Jr., Agapios Kyriacos Agapiou, David M. Glowczwski
-
Patent number: 8420754Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: November 11, 2010Date of Patent: April 16, 2013Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
-
Publication number: 20110060111Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: ApplicationFiled: November 11, 2010Publication date: March 10, 2011Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Kevin J. Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, JR., Maria Apecetche
-
Patent number: 7634937Abstract: Particle and multi-phase system monitoring methods, systems and apparatus are disclosed. Preferred embodiments comprise one or more mechanical resonator sensing elements. In preferred embodiments a sensor or a sensor subassembly is ported to a fluidized bed vessel such as a fluidized bed polymerization reactor.Type: GrantFiled: December 6, 2005Date of Patent: December 22, 2009Assignee: Symyx Solutions, Inc.Inventors: Ian Burdett, Timothy Lynn, Oleg Kolosov, Daniel Paul Zilker, Jr., Leonid Matsiev
-
Patent number: 7563851Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: August 11, 2005Date of Patent: July 21, 2009Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
-
Patent number: 7504463Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: August 11, 2005Date of Patent: March 17, 2009Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
-
Patent number: 6989344Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: November 18, 2003Date of Patent: January 24, 2006Assignee: Univation Technologies, LLCInventors: Kevin J. Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
-
Patent number: 6987152Abstract: A method for olefin polymerization is provided. A feed stream comprising more than 0.1 ppm by volume of oxygen and 0.3 ppm by volume of water is passed through a first packed bed to selectively remove at least a portion of the oxygen. The feed stream is then passed through a second packed bed to selectively remove at least a portion of the water, providing a purified feed stream comprising less than 0.1 ppm by volume of oxygen and 0.3 ppm by volume of water. Both the first and second packed beds operate at a temperature of from about 0° C. to about 50° C. The purified feed stream is then passed to a polymerization reactor.Type: GrantFiled: June 2, 2005Date of Patent: January 17, 2006Assignee: Univation Technologies, LLCInventors: Ronald Steven Eisinger, Daniel Paul Zilker, Jr., James Leland Swecker, II
-
Patent number: 6592827Abstract: There is provided an automated sampling system for taking polymer samples from a fluidized bed, gas phase reaction system which utilizes at least one volatile, hazardous monomer. The sampling system provides minimal sample-to-sample variability, improved reactor control and polymerization operability which minimizing potential exposure or release of the volatile, hazardous monomers.Type: GrantFiled: October 24, 2000Date of Patent: July 15, 2003Assignee: Univation Technologies LLCInventors: Daniel Paul Zilker, Jr., Christopher Scott Hunnisett, Donald Robert Fields, Kiu Hee Lee
-
Patent number: 6540165Abstract: A process comprising the steps of: (1) pressurizing a particulate material in bead or pellet form in a vessel to an elevated pressure with a first gas, (2) reducing the particulate material under the elevated pressure to a fine consistency, (3) conveying the fine consistency particulate material into a receiving vessel.Type: GrantFiled: September 24, 1999Date of Patent: April 1, 2003Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Fathi David Hussein, Ronald Steven Eisinger, Daniel Paul Zilker, Jr., David Mason Gaines
-
Patent number: 6388027Abstract: The invention relates to a process for transitioning from polymerizing sticky polymer to polymerize another sticky polymer in gas phase fluidization bed production to decrease transition time, reduce off-grade material, and/or prevent operational difficulty.Type: GrantFiled: October 24, 2000Date of Patent: May 14, 2002Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Daniel Paul Zilker, Jr., William David Vacek, Mark Edwin O'Rosky, Fathi David Hussein
-
Patent number: 6255420Abstract: A process for starting a polymerization of butadiene to produce polybutadiene in a gas phase reactor having a seed bed which comprises (i) passivating the reactor and the seed bed by introducing an aluminum alkyl having a concentration ranging from about 2,000 to 20,000 ppm and (ii) feeding the catalyst and co-catalyst to the reactor before the addition of the butadiene.Type: GrantFiled: November 22, 1999Date of Patent: July 3, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Albert George Dietz, III, Daniel Paul Zilker, Kiu Hee Lee
-
Patent number: 6011128Abstract: There is provided process for producing an ethylene-alpha-olefin polymer at a polymerization reaction temperature in excess of the softening temperature of the polymer in a gas-phase fluidized-bed reactor in the presence of a polymerization catalyst and wherein the polymerization reaction is conducted in the presence of an inert particulate material, the improvement comprising: commencing polymerization by polymerizing an ethylene propylene rubber having a crystallinity ranging from about 4 to 18 percent as measured by differential scanning calorimetry.Type: GrantFiled: June 17, 1998Date of Patent: January 4, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Robert Steven Eisinger, Kiu Hee Lee, Fathi David Hussein, Daniel Paul Zilker, Jr.
-
Patent number: 5652314Abstract: A process is provided for preparing a shape-shifted catalyst component comprising (1) contacting a dihydrocarbyloxide magnesium compound with carbon dioxide in the presence of a slurrying agent to form a slurry of a carboxylated dihydrocarbyloxide magnesium compound; (2) adding a filler to the slurry either before or after the carboxylation of step (1); (3) spray drying the slurry of step (2) to evaporate the slurrying agent and to produce solid particles of the carboxylated dihydrocarbyloxide magnesium compound incorporating the filler; and, optionally, (4) heating the solid particles to remove carbon dioxide to produce a shape-shifted dihydrocarbyloxide magnesium compound component. A catalyst system using the component and a polymerization process employing the catalyst system are also provided.Type: GrantFiled: August 21, 1996Date of Patent: July 29, 1997Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Burkhard Eric Wagner, Daniel Paul Zilker, Jr., Robert James Jorgensen