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).
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Patent number: 9464144Abstract: 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: GrantFiled: June 2, 2014Date of Patent: October 11, 2016Assignee: W. R. Grace & Co.—Conn.Inventors: Kelly Gonzalez, Clark C. Williams, Linfeng Chen
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Publication number: 20150344597Abstract: 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: ApplicationFiled: August 7, 2015Publication date: December 3, 2015Inventors: Michael F. Gullo, Gary A. Roth, Tak W. Leung, Clark C. Williams
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Patent number: 9133286Abstract: 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: GrantFiled: August 30, 2011Date of Patent: September 15, 2015Assignee: W. R. Grace & Co.-ConnInventors: Michael F. Gullo, Gary A. Roth, Tak W. Leung, Clark C. Williams
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Publication number: 20140274668Abstract: 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: ApplicationFiled: June 2, 2014Publication date: September 18, 2014Applicant: W. R. GRACE & CO.-CONN.Inventors: Kelly Gonzalez, Clark C. Williams, Linfeng Chen
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Patent number: 8778826Abstract: 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: GrantFiled: December 31, 2009Date of Patent: July 15, 2014Assignee: W. R. Grace & Co.-Conn.Inventors: Kelly Gonzalez, Clark C. Williams, Linfeng Chen
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Publication number: 20130338321Abstract: 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: ApplicationFiled: February 29, 2012Publication date: December 19, 2013Inventors: Joseph N. Coalter, III, Linfeng Chen, Clark C. Williams
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Patent number: 8551903Abstract: 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: GrantFiled: February 24, 2011Date of Patent: October 8, 2013Assignee: Dow Global Technologies LLCInventors: Linfeng Chen, Clark C. Williams, Tak W. Leung, Tao Tao, Kuanqiang Gao, James X. Shu
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Publication number: 20130053525Abstract: 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: ApplicationFiled: August 30, 2011Publication date: February 28, 2013Inventors: Michael F. Gullo, Gary A. Roth, Tak W. Leung, Clark C. Williams
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Publication number: 20120316299Abstract: 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: ApplicationFiled: February 24, 2011Publication date: December 13, 2012Inventors: Linfeng Chen, Tak W. Leung, Tao Tao, James X. Shu, Kuanqiang Gao, Clark C. Williams
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Publication number: 20100173769Abstract: 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: ApplicationFiled: December 31, 2009Publication date: July 8, 2010Inventors: Kelly A. Gonzalez, Clark C. Williams, Linfeng Chen
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Patent number: 6586544Abstract: This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.Type: GrantFiled: April 15, 2002Date of Patent: July 1, 2003Assignee: Univation Technologies, LLCInventors: John F. Szul, Kersten Anne Erickson, Simon Mawson, David James Schreck, Mark G. Goode, Paul T. Daniell, Matthew G. McKee, Clark C. Williams
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Patent number: 6489263Abstract: 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)/3Type: GrantFiled: April 26, 2001Date of Patent: December 3, 2002Assignee: Univation Technologies, LLCInventors: Rex E. Murray, Simon Mawson, Clark C. Williams, D. James Schreck
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Patent number: 6489408Abstract: 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: GrantFiled: November 30, 2000Date of Patent: December 3, 2002Assignee: Univation Technologies, LLCInventors: Simon Mawson, John Francis Szul, Mark Gregory Goode, Clark C. Williams
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Publication number: 20020111443Abstract: This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.Type: ApplicationFiled: April 15, 2002Publication date: August 15, 2002Inventors: John F. Szul, Kersten Anne Erickson, Simon Mawson, David James Schreck, Mark G. Goode, Paul T. Daniell, Matthew G. McKee, Clark C. Williams
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Patent number: 6399722Abstract: This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.Type: GrantFiled: December 1, 1999Date of Patent: June 4, 2002Assignee: Univation Technologies, LLCInventors: John F. Szul, Kersten Anne Erickson, Simon Mawson, David James Schreck, Mark G. Goode, Paul T. Daniell, Matthew G. McKee, Clark C. Williams
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Publication number: 20020065374Abstract: 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: ApplicationFiled: November 30, 2000Publication date: May 30, 2002Inventors: Simon Mawson, John Francis Szul, Mark Gregory Goode, Clark C. Williams
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Patent number: 6320002Abstract: 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: GrantFiled: December 18, 1998Date of Patent: November 20, 2001Assignee: Univation Technologies, LLCInventors: Rex E. Murray, Simon Mawson, Clark C. Williams, James D. Schreck
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Publication number: 20010034297Abstract: 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: ApplicationFiled: April 26, 2001Publication date: October 25, 2001Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, D. James Schreck
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Patent number: 6268447Abstract: 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)/3Type: GrantFiled: December 18, 1998Date of Patent: July 31, 2001Assignee: Univation Technologies, L.L.C.Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, D. James Schreck
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Patent number: 6265513Abstract: 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: GrantFiled: December 18, 1998Date of Patent: July 24, 2001Assignee: Univation Technologies, LLCInventors: Rex E. Murray, Simon Mawson, Clark C. Williams, James D. Schreck