Patents by Inventor Christopher R. Davey

Christopher R. Davey 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: 8722804
    Abstract: Polymer blends and films made therefrom are provided. The polymer blend can include a first polyethylene having a density of less than about 0.940 g/cm3, a melt index (I2) greater than 0.75 g/10 min, and a melt index ratio (I21/I2) of less than 30. The polymer blend can also include a second polyethylene having a density of less than about 0.940 g/cm, a melt index (I2) of less than 1 g/10 min, a melt index ratio (I21/I2) greater than 30, and a molecular weight distribution (Mw/Mn) of less than 4.5.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: May 13, 2014
    Assignee: Univation Technologies, LLC
    Inventors: Ching-Tai Lue, Christopher R. Davey
  • Patent number: 8476392
    Abstract: A process for the production of an ethylene alpha-olefin copolymer is disclosed, the process including polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density D of 0.927 g/cc or less, a melt index (I2) of from 0.1 to 100 dg/min, a MWD of from 1.5 to 5.0. The resulting ethylene alpha-olefin copolymer may also have a peak melting temperature Tmax second melt satisfying the following relation: Tmax second melt>D*398?245.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: July 2, 2013
    Assignee: Univation Technologies, LLC
    Inventors: Rainer Kolb, Agapios K. Agapiou, James M. Farley, Eric J. Markel, Bruce J. Savatsky, Christopher R. Davey, Richard B. Pannell
  • Publication number: 20130085231
    Abstract: Polymer blends and films made therefrom are provided. The polymer blend can include a first polyethylene having a density of less than about 0.940 g/cm3, a melt index (I2) greater than 0.75 g/10 min, and a melt index ratio (I21/I2) of less than 30. The polymer blend can also include a second polyethylene having a density of less than about 0.940 g/cm, a melt index (I2) of less than 1 g/10 min, a melt index ratio (I21/I2) greater than 30, and a molecular weight distribution (Mw/Mn) of less than 4.5.
    Type: Application
    Filed: March 22, 2011
    Publication date: April 4, 2013
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Ching-Tai Lue, Christopher R. Davey
  • Patent number: 8084560
    Abstract: A process for the production of an ethylene alpha-olefin copolymer is disclosed, the process including polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density D of 0.927 g/cc or less, a melt index (I2) of from 0.1 to 100 dg/min, a MWD of from 1.5 to 5.0. The resulting ethylene alpha-olefin copolymer may also have a peak melting temperature Tmax second melt satisfying the following relation: Tmax second melt>D*398?245.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: December 27, 2011
    Assignee: Univation Technologies, LLC
    Inventors: Rainer Kolb, Agapios K. Agapiou, James M. Farley, Eric J. Markel, Bruce J. Savatsky, Christopher R. Davey, Richard B. Pannell
  • Patent number: 8067518
    Abstract: Ethylene alpha-olefin copolymers formed by contacting at least one supported metallocene catalyst, ethylene, and an alpha-olefin in a gas phase reactor are disclosed. In some embodiments, the polymer may have: a density of between 0.890 and 0.970 g/cc; a melt index of between 0.7 and 200 dg/min; a melt index ratio of less than 30; an ESCR value of greater than 1000 hours; and a 1% secant modulus of greater than 75,000 psi. In other embodiments, the polymer may have: a density of between 0.930 g/cc and 0.970 g/cc; a melt index of between 10 dg/min and 200 dg/min; a melt index ratio of between 10 and 25; a part weight of greater than 3 g and a part length of greater than 38 cm in a spiral flow test, and; a zero shear viscosity of less than 150 Pa·s. Processes to produce these polymers are also disclosed.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: November 29, 2011
    Assignee: Univation Technologies, LLC
    Inventors: Christopher R. Davey, James M. Farley, Rainer Kolb, Mark P. Ossowski
  • Publication number: 20110040041
    Abstract: A process for the production of an ethylene alpha-olefin copolymer is disclosed, the process including polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density D of 0.927 g/cc or less, a melt index (I2) of from 0.1 to 100 dg/min, a MWD of from 1.5 to 5.0. The resulting ethylene alpha-olefin copolymer may also have a peak melting temperature Tmax second melt satisfying the following relation: Tmax second melt>D*398?245.
    Type: Application
    Filed: October 22, 2010
    Publication date: February 17, 2011
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Rainer Kolb, Agapios K. Agapiou, James M. Farley, Eric J. Markel, Bruce J. Savatsky, Christopher R. Davey, Richard B. Pannell
  • Publication number: 20080045679
    Abstract: Ethylene alpha-olefin copolymers formed by contacting at least one supported metallocene catalyst, ethylene, and an alpha-olefin in a gas phase reactor are disclosed. In some embodiments, the polymer may have: a density of between 0.890 and 0.970 g/cc; a melt index of between 0.7 and 200 dg/min; a melt index ratio of less than 30; an ESCR value of greater than 1000 hours; and a 1% secant modulus of greater than 75,000 psi. In other embodiments, the polymer may have: a density of between 0.930 g/cc and 0.970 g/cc; a melt index of between 10 dg/min and 200 dg/min; a melt index ratio of between 10 and 25; a part weight of greater than 3 g and a part length of greater than 38 cm in a spiral flow test, and; a zero shear viscosity of less than 150 Pa·s. Processes to produce these polymers are also disclosed.
    Type: Application
    Filed: June 7, 2007
    Publication date: February 21, 2008
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Christopher R. Davey, James M. Farley, Rainer Kolb, Mark P. Ossowski
  • Patent number: 6977287
    Abstract: The co-polymerization reaction of one or more olefin monomers, such as propylene, with ?,?-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of ?,?-dienes. The copolymer may have a weight average molecular weight in the range from 50,000 to 2,000,000, a crystallization temperature in the range from 115° C. to 135° C. and a melt flow rate in the range from 0.1 dg/min to 100 dg/min. These copolymers may be employed in a wide variety of applications, the articles of which include, for example, films, fibers, such as spunbonded and meltblown fibers, fabrics, such as nonwoven fabrics, and molded articles. The copolymer may further include at least two crystalline populations. Desirably, the melting point range of one of the crystalline populations is distinguishable from the melting point range of another crystalline population by a temperature range of from 1° C. to 8° C.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: December 20, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Pawan Kumar Agarwal, Weiqing Weng, Aspy K. Mehta, Armenag H. Dekmezian, Main Chang, Rajan K. Chudgar, Christopher R. Davey, Chon-Yie Lin, Galen C. Richeson, Palanisamy Arjunan, Olivier Jean Georjon
  • Publication number: 20040087750
    Abstract: The co-polymerization reaction of one or more olefin monomers, such as propylene, with &agr;,&ohgr;-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of &agr;,&ohgr;-dienes. The copolymer may have a weight average molecular weight in the range from 50,000 to 2,000,000, a crystallization temperature in the range from 115° C. to 135° C. and a melt flow rate in the range from 0.1 dg/min to 100 dg/min. These copolymers may be employed in a wide variety of applications, the articles of which include, for example, films, fibers, such as spunbonded and meltblown fibers, fabrics, such as nonwoven fabrics, and molded articles. The copolymer may further indude at least two crystalline populations.
    Type: Application
    Filed: June 24, 2003
    Publication date: May 6, 2004
    Inventors: Pawan Kumar Agarwal, Weiqing Weng, Aspy K. Mehta, Armenag H. Dekmezian, Main Chang, Rajan K. Chudgar, Christopher R. Davey, Chon-Yie Lin, Galen C. Richeson, Palanisamy Arjunan, Olivier Jean Georjon
  • Publication number: 20020013440
    Abstract: The co-polymerization reaction of one or more olefin monomers, such as propylene, with &agr;,&ohgr;-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of &agr;,&ohgr;-dienes. The copolymer may have a weight average molecular weight in the range from 50,000 to 2,000,000, a crystallization temperature in the range from 115° C. to 135° C. and a melt flow rate in the range from 0.1 dg/min to 100 dg/min. These copolymers may be employed in a wide variety of applications, the articles of which include, for example, films, fibers, such as spunbonded and meltblown fibers, fabrics, such as nonwoven fabrics, and molded articles. The copolymer may further include at least two crystalline populations.
    Type: Application
    Filed: February 20, 2001
    Publication date: January 31, 2002
    Inventors: Pawan Kumar Agarwal, Weiqing Weng, Aspy K. Mehta, Armenag H. Dekmezian, Main Chang, Rajan K. Chudgar, Christopher R. Davey, Charlie Y. Lin, Michael C. Chen, Galen C. Richeson
  • Publication number: 20010053837
    Abstract: The copolymerization reaction of one or more olefin monomers, such as propylene, with &agr;,&ohgr;-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of &agr;,&ohgr;-dienes. The copolymer may have a weight average molecular weight in the range from 50,000 to 2,000,000, a crystallization temperature (without the use of externally added nucleating agents) in the range from 115° C. to 135° C. and a melt flow rate in the range from 0.1 dg/min to 100 dg/min. These copolymers may be employed in a wide variety of applications, the articles of which include, for example, films, fibers, such as spunbonded and meltblown fibers, fabrics, such as nonwoven fabrics, and molded articles. The copolymer may further include at least two crystalline populations.
    Type: Application
    Filed: February 20, 2001
    Publication date: December 20, 2001
    Inventors: Pawan Kumar Agarwal, Weiqing Weng, Aspy K. Mehta, Armenag H. Dekmezian, Main Chang, Rajan K. Chudgar, Christopher R. Davey, Charlie Y. Lin, Michael C. Chen, Galen C. Richeson
  • Patent number: 5322728
    Abstract: Fiber with unique elastic properties comprising copolymer, of ethylene and comonomer, having density in the range of about 0.86 to about 0.93 g/cm.sup.3, MWD in the range of about 2 to about 3.5, melt index in the range of about 4 to about 1000, and SDBI less than about 25.degree. C.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: June 21, 1994
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Christopher R. Davey, Thomas C. Erderly, Aspy K. Mehta, Charles S. Speed
  • Patent number: 4123377
    Abstract: A particulate detergent composition containing dibasic magnesium hypochlorite having a specific small particle size as the bleaching agent.
    Type: Grant
    Filed: August 25, 1977
    Date of Patent: October 31, 1978
    Assignee: The Procter & Gamble Company
    Inventors: Christopher R. Davey, Peter J. Buckley