Patents by Inventor Clark C. Williams

Clark C. Williams 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: 9464144
    Abstract: Disclosed herein are processes for preparing procatalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present procatalyst compositions improve catalyst selectivity and also increase the bulk density of the formant polymer.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: October 11, 2016
    Assignee: W. R. Grace & Co.—Conn.
    Inventors: Kelly Gonzalez, Clark C. Williams, Linfeng Chen
  • Publication number: 20150344597
    Abstract: The present disclosure is directed to the production of substituted phenylene aromatic diesters and 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate (or “BMPD”) in particular. The processes disclosed herein produce a liquid BMPD product. The liquid BMPD product unexpectedly creates production efficiencies by reducing the number of production steps, reducing the amount and/or number of reagents required for BMPD production. The liquid BMPD product may also be utilized in procatalyst production yielding similar production efficiencies. The procatalyst composition is subsequently used for olefin polymerization.
    Type: Application
    Filed: August 7, 2015
    Publication date: December 3, 2015
    Inventors: Michael F. Gullo, Gary A. Roth, Tak W. Leung, Clark C. Williams
  • Patent number: 9133286
    Abstract: The present disclosure is directed to the production of substituted phenylene aromatic diesters and 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate (or “BMPD”) in particular. The processes disclosed herein produce a liquid BMPD product. The liquid BMPD product unexpectedly creates production efficiencies by reducing the number of production steps, reducing the amount and/or number of reagents required for BMPD production. The liquid BMPD product may also be utilized in procatalyst production yielding similar production efficiencies. The procatalyst composition is subsequently used for olefin polymerization.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 15, 2015
    Assignee: W. R. Grace & Co.-Conn
    Inventors: Michael F. Gullo, Gary A. Roth, Tak W. Leung, Clark C. Williams
  • Publication number: 20140274668
    Abstract: Disclosed herein are processes for preparing procatalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present procatalyst compositions improve catalyst selectivity and also increase the bulk density of the formant polymer.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 18, 2014
    Applicant: W. R. GRACE & CO.-CONN.
    Inventors: Kelly Gonzalez, Clark C. Williams, Linfeng Chen
  • Patent number: 8778826
    Abstract: Disclosed herein are processes for preparing procatalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present procatalyst compositions improve catalyst selectivity and also increase the bulk density of the formant polymer.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: July 15, 2014
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Kelly Gonzalez, Clark C. Williams, Linfeng Chen
  • Publication number: 20130338321
    Abstract: Disclosed herein are processes for preparing procatalyst compositions which include multiple contact steps in the presence of a substituted phenylene aromatic diester and at least one other internal electron donor. The multi-contact procatalyst compositions produced from the present processes improve polymer properties and polymerization parameters. In particular, the present multi-contact procatalyst compositions improve polymer bulk density.
    Type: Application
    Filed: February 29, 2012
    Publication date: December 19, 2013
    Inventors: Joseph N. Coalter, III, Linfeng Chen, Clark C. Williams
  • Patent number: 8551903
    Abstract: Disclosed is a process for producing a procatalyst composition having an amide ester internal electron donor. The process includes pre-halogenating a procatalyst precursor before reaction with the amide ester and forming the procatalyst composition. Ziegler-Natta catalyst compositions containing the present procatalyst composition exhibit improved catalyst activity and/or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 8, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Linfeng Chen, Clark C. Williams, Tak W. Leung, Tao Tao, Kuanqiang Gao, James X. Shu
  • Publication number: 20130053525
    Abstract: The present disclosure is directed to the production of substituted phenylene aromatic diesters and 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate (or “BMPD”) in particular. The processes disclosed herein produce a liquid BMPD product. The liquid BMPD product unexpectedly creates production efficiencies by reducing the number of production steps, reducing the amount and/or number of reagents required for BMPD production. The liquid BMPD product may also be utilized in procatalyst production yielding similar production efficiencies. The procatalyst composition is subsequently used for olefin polymerization.
    Type: Application
    Filed: August 30, 2011
    Publication date: February 28, 2013
    Inventors: Michael F. Gullo, Gary A. Roth, Tak W. Leung, Clark C. Williams
  • Publication number: 20120316299
    Abstract: Disclosed is a process for producing a procatalyst composition having an amide ester internal electron donor. The process includes pre-halogenating a procatalyst precursor before reaction with the amide ester and forming the procatalyst composition. Ziegler-Natta catalyst compositions containing the present procatalyst composition exhibit improved catalyst activity and/or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 13, 2012
    Inventors: Linfeng Chen, Tak W. Leung, Tao Tao, James X. Shu, Kuanqiang Gao, Clark C. Williams
  • Publication number: 20100173769
    Abstract: Disclosed herein are processes for preparing procatalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present procatalyst compositions improve catalyst selectivity and also increase the bulk density of the formant polymer.
    Type: Application
    Filed: December 31, 2009
    Publication date: July 8, 2010
    Inventors: Kelly A. Gonzalez, Clark C. Williams, Linfeng Chen
  • Patent number: 6586544
    Abstract: This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: July 1, 2003
    Assignee: Univation Technologies, LLC
    Inventors: John F. Szul, Kersten Anne Erickson, Simon Mawson, David James Schreck, Mark G. Goode, Paul T. Daniell, Matthew G. McKee, Clark C. Williams
  • Patent number: 6489263
    Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of at least one activator and at least two different transition metal compounds each of which is represented by the formula: ((Z)XAt(YJ))qMQn  (I) where M is a metal selected from Group 3 to 13 or lanthanide and actinide series of the Periodic Table of Elements; Q is bonded to M and each Q is a monovalent, divalent or trivalent anion; X and Y are bonded to M; X and Y are independently C or a heteroatom, provided that at least one of X and Y is a heteroatom and Y is contained in a heterocyclic ring J, where J comprises from 2 to 50 non-hydrogen atoms; Z is bonded to X, where Z comprises 1 to 50 non-hydrogen atoms; t is 0 or 1; when t is 1, A is a bridging group joined to at least one of X, Y or J; q is 1 or 2; n is the oxidation state of M minus q if Q is a monovalent anion, n is (the oxidation state of M−q)/2, if Q is a bivalent anion or n is (the oxidation state of M−q)/3
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: December 3, 2002
    Assignee: Univation Technologies, LLC
    Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, D. James Schreck
  • Patent number: 6489408
    Abstract: The present invention relates to a method to polymerize monomer comprising contacting one or more monomer(s) with a catalyst system in a gas phase reactor having a recycle system, for removing a recycle gas and unreacted monomer(s) from the reactor and returning the recycle gas and fresh monomer(s) to the reactor, and a plenum, the method comprising the steps of: (a) cooling the recycle gas to form a cooled recycle gas; (b) optionally combining the cooled recycle gas with additional recycle gas; and (c) injecting the cooled recycle gas into the gas phase reactor through the plenum.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: December 3, 2002
    Assignee: Univation Technologies, LLC
    Inventors: Simon Mawson, John Francis Szul, Mark Gregory Goode, Clark C. Williams
  • Publication number: 20020111443
    Abstract: This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.
    Type: Application
    Filed: April 15, 2002
    Publication date: August 15, 2002
    Inventors: John F. Szul, Kersten Anne Erickson, Simon Mawson, David James Schreck, Mark G. Goode, Paul T. Daniell, Matthew G. McKee, Clark C. Williams
  • Patent number: 6399722
    Abstract: This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: June 4, 2002
    Assignee: Univation Technologies, LLC
    Inventors: John F. Szul, Kersten Anne Erickson, Simon Mawson, David James Schreck, Mark G. Goode, Paul T. Daniell, Matthew G. McKee, Clark C. Williams
  • Publication number: 20020065374
    Abstract: The present invention relates to a method to polymerize monomer comprising contacting one or more monomer(s) with a catalyst system in a gas phase reactor having a recycle system, for removing a recycle gas and unreacted monomer(s) from the reactor and returning the recycle gas and fresh monomer(s) to the reactor, and a plenum, the method comprising the steps of: (a) cooling the recycle gas to form a cooled recycle gas; (b) optionally combining the cooled recycle gas with additional recycle gas; and (c) injecting the cooled recycle gas into the gas phase reactor through the plenum.
    Type: Application
    Filed: November 30, 2000
    Publication date: May 30, 2002
    Inventors: Simon Mawson, John Francis Szul, Mark Gregory Goode, Clark C. Williams
  • Patent number: 6320002
    Abstract: This invention relates to a process to polymerize olefins comprising contacting an olefin with a composition comprising the product of the combination of an activator and a transition metal compound provided that if the process occurs in the slurry phase then the activator and the transition metal compound are allowed to react for at least fifteen minutes before being contacted with the olefin.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: November 20, 2001
    Assignee: Univation Technologies, LLC
    Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, James D. Schreck
  • Publication number: 20010034297
    Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of at least one activator and at least two different transition metal compounds each of which is represented by the formula:
    Type: Application
    Filed: April 26, 2001
    Publication date: October 25, 2001
    Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, D. James Schreck
  • Patent number: 6268447
    Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of at least one activator and at least two different transition metal compounds each of which is represented by the formula: ((Z)XAt(YJ))qMQn  (I) where M is a metal selected from Group 3 to 13 or lanthanide and actinide series of the Periodic Table of Elements; Q is bonded to M and each Q is a monovalent, divalent or trivalent anion; X and Y are bonded to M; X and Y are independently C or a heteroatom, provided that at least one of X and Y is a heteroatom and Y is contained in a heterocyclic ring J, where J comprises from 2 to 50 non-hydrogen atoms; Z is bonded to X, where Z comprises 1 to 50 non-hydrogen atoms; t is 0 or 1; when t is 1, A is a bridging group joined to at least one of X, Y or J; q is 1 or 2; n is the oxidation state of M minus q if Q is a monovalent anion, n is (the oxidation state of M−q)/2, if Q is a bivalent anion or n is (the oxidation state of M−q)/3
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: July 31, 2001
    Assignee: Univation Technologies, L.L.C.
    Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, D. James Schreck
  • Patent number: 6265513
    Abstract: Polyolefin wherein A) the melt indices of Fractions 1, 4 and 6 of the polyolefin do not vary by more than 20% relative to the mean of Fractions 1, 4 and 6; and/or B) the percent crystallinity of Fractions 1, 4 and 6 of the polyolefin do not vary by more than 6% relative to the mean of Fractions 1, 4 and 6; and/or C) the Mw/Mn of Fractions 1, 4 and 6 of the polyolefin do not vary by more than 20% relative to the mean of Fractions 1, 4 and 6; and/or D) Fraction 1 has an aspect ratio of 0.5-1.5, fraction 4 has an aspect ratio of 1.2 to 4, Fraction 6 has an aspect ratio of about 1.75 to 5 provided that the aspect ratios of the Fractions differ by at least 0.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: July 24, 2001
    Assignee: Univation Technologies, LLC
    Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, James D. Schreck