Patents by Inventor Charles J. Ruff
Charles J. Ruff 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: 10465022Abstract: This invention relates to methods to prepare and compositions pertaining to branched ethylene-propylene copolymers that include at least 50% ethylene content by weight as determined by FTIR; a g?vis of less than 0.95; a Mw of 125,000 to 300,000; a methylene sequence length of 6 or greater as determined by 13C NMR, wherein the percentage of sequences of the length of 6 or greater is more than 32%; and can have greater than 50% vinyl chain end functionality.Type: GrantFiled: April 19, 2017Date of Patent: November 5, 2019Assignee: ExxonMobil Chemical Patents Inc.Inventors: Mun F. Tse, Jo Ann M. Canich, Charles J. Ruff, Daniel Bilbao, Carlos U. DeGracia, Ian C. Stewart
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Patent number: 10100183Abstract: This invention relates in one aspect to propylene polymers comprising propylene, said polymers having a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of 10 dg/min to 25 dg/min; a Dimensionless Stress Ratio/Loss Tangent Index R2 at 190° C. from 1.5 to 28; an average meso run length determined by 13C NMR of at least 70 or higher; and an MFR MFR Ratio of at least 1.0 and optionally, a Loss Tangent, tan ?, at an angular frequency of 0.1 rad/s at 190° C. from 14 to 100. The inventive propylene polymer compositions are useful in in molded articles and non-woven fibers and fabrics.Type: GrantFiled: November 25, 2013Date of Patent: October 16, 2018Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jeanne M. MacDonald, Antonios Doufas, Jerome Sarrazin, William M. Ferry, Charles J. Ruff, Rahul R. Kulkarni, Derek W. Thurman, Cynthia A. Mitchell
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Patent number: 9796645Abstract: This invention is directed to a poly alpha olefin (PAO) composition formed in a first oligomerization, wherein at least portions of the PAO have properties that make them highly desirable for a subsequent oligomerization. A preferred process for producing this PAO uses a single site catalyst at high temperatures without adding hydrogen to produce a low viscosity PAO with excellent Noack volatility at high conversion rates. This PAO comprises a dimer product with at least 25 wt % tri-substituted vinylene olefins wherein said dimer product is highly desirable as a feedstock for a subsequent oligomerization. This PAO also comprises trimer and optionally higher oligomer products with outstanding properties that make these products useful as lubricant basestocks following hydrogenation.Type: GrantFiled: September 12, 2012Date of Patent: October 24, 2017Assignee: ExxonMobil Chemical Patents Inc.Inventors: Craig J. Emett, Mark P. Hagemeister, Wenning W. Han, Bruce A. Harrington, Phillip T. Matsunaga, Charles J. Ruff, Kevin B. Stavens, Margaret M. Wu
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Publication number: 20170218102Abstract: This invention relates to methods to prepare and compositions pertaining to branched ethylene-propylene copolymers that include at least 50% ethylene content by weight as determined by FTIR; a g?vis of less than 0.95; a Mw of 125,000 to 300,000; a methylene sequence length of 6 or greater as determined by 13C NMR, wherein the percentage of sequences of the length of 6 or greater is more than 32%; and can have greater than 50% vinyl chain end functionality.Type: ApplicationFiled: April 19, 2017Publication date: August 3, 2017Inventors: Mun F. Tse, Jo Ann M. Canich, Charles J. Ruff, Daniel Bilbao, Carlos U. DeGracia, Ian C. Stewart
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Patent number: 9657122Abstract: This invention relates to methods to prepare and compositions pertaining to branched ethylene-propylene copolymers that include at least 50% ethylene content by weight as determined by FTIR; a g?vis of less than 0.95; a Mw of 125,000 to 300,000; a methylene sequence length of 6 or greater as determined by 13C NMR, wherein the percentage of sequences of the length of 6 or greater is more than 32%; and can have greater than 50% vinyl chain end functionality.Type: GrantFiled: July 16, 2014Date of Patent: May 23, 2017Assignee: ExxonMobil Chemical Patents Inc.Inventors: Mun F. Tse, Jo Ann M. Canich, Charles J. Ruff, Daniel L. Bilbao, Carlos U. DeGracia, Ian C. Stewart
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Patent number: 9399746Abstract: Poly alpha olefins (PAOs) are characterized by very low viscosity and excellent Noack volatility. A preferred process for synthesizing said PAOs involves first oligomerizing low molecular weight linear alpha olefins in the presence of a single site catalyst at high temperatures without adding hydrogen and then subsequently oligomerizing at least a portion of the product from the first step in the presence of an oligomerization catalyst.Type: GrantFiled: September 12, 2012Date of Patent: July 26, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Craig J. Emett, Mark P. Hagemeister, Bruce A. Harrington, Phillip T. Matsunaga, Pramod J. Nandapurkar, Charles J. Ruff, Kevin B. Stavens
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Patent number: 9382411Abstract: This invention relates to propylene polymers comprising at least 50 mol % propylene, said polymers having: a) a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of 10 dg/min to 25 dg/min; b) a Dimensionless Stress Ratio/Loss Tangent Index R2 at 190° C. from 1.5 to 28; c) an onset temperature of crystallization under flow, Tc,rheol (as determined by SAOS rheology, 190° C., 1° C./min, where said polymer has 0 wt % nucleating agent present), of at least 131° C.; d) an average meso run length determined by 13C NMR of at least 90 or higher; and e) optionally, a loss tangent, tan ?, (defined by Eq. (2)) at an angular frequency of 0.1 rad/s at 190° C. from 14 to 70.Type: GrantFiled: November 25, 2013Date of Patent: July 5, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jeanne M. MacDonald, Antonios Doufas, Jerome Sarrazin, William Michael Farry, Charles J. Ruff, Rahul Ravindra Kulkami, Derek Wade Thurman, Cynthia A. Mitchell
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Patent number: 9365788Abstract: This invention is directed to a two-step process for the preparation of improved poly alpha olefins wherein the first step involves oligomerizing low molecular weight linear alpha olefins in the presence of a single site catalyst and the second step involves oligomerization of at least a portion of the product from the first step in the presence of an oligomerization catalyst. The dimer product from the first oligomerization is characterized by a tri-substituted vinylene olefin content of at least 25 wt %.Type: GrantFiled: September 12, 2012Date of Patent: June 14, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Craig J. Emett, Mark P. Hagemeister, Bruce A. Harrington, Chon Y. Lin, Phillip T. Matsunaga, Charles J. Ruff, Kevin B. Stavens
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Publication number: 20160122452Abstract: This invention relates to methods to prepare and compositions pertaining to branched ethylene-propylene copolymers that include at least 50% ethylene content by weight as determined by FTIR; a g?vis of less than 0.95; a MW of 150,000 to 250,000; a methylene sequence length of 6 or greater as determined by 13C NMR, wherein the percentage of sequences of the length of 6 or greater is more than 32%; and can have greater than 50% vinyl chain end functionality.Type: ApplicationFiled: July 7, 2014Publication date: May 5, 2016Inventors: Mun F. Tse, Jo Ann M. Canich, Charles J. Ruff, Daniel L. Bilbao, Carlos U. DeGracia, Ian C. Stewart
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Publication number: 20160115263Abstract: This invention relates to methods to prepare and compositions pertaining to branched ethylene-propylene copolymers that include at least 50% ethylene content by weight as determined by FTIR; a g?vis of less than 0.95; a Mw of 125,000 to 300,000; a methylene sequence length of 6 or greater as determined by 13C NMR, wherein the percentage of sequences of the length of 6 or greater is more than 32%; and can have greater than 50% vinyl chain end functionality.Type: ApplicationFiled: July 16, 2014Publication date: April 28, 2016Inventors: Mun F. Tse, Jo Ann M. Canich, Charles J. Ruff, Daniel L. Bilbao, Carlos U. DeGracia, Ian C. Stewart
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Patent number: 9273163Abstract: This invention relates to the reaction product(s) of a polyalkylhydrosiloxane and a vinyl terminated macromonomer (VTM).Type: GrantFiled: September 20, 2013Date of Patent: March 1, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Donna J. Crowther, Man Kit Ng, Charles J. Ruff, Patrick Brant, Jacqueline A. Lovell, Carlos R. Lopez-Barron
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Publication number: 20150307699Abstract: This invention relates to propylene polymers comprising at least 50 mol % propylene, said polymers having: a) a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of 10 dg/min to 25 dg/min; b) a Dimensionless Stress Ratio/Loss Tangent Index R2 at 190° C. from 1.5 to 28; c) an onset temperature of crystallization under flow, Tc,rheol (as determined by SAOS rheology, 190° C., 1° C./min, where said polymer has 0 wt % nucleating agent present), of at least 131° C.; d) an average meso run length determined by 13C NMR of at least 90 or higher; and e) optionally, a loss tangent, tan ?, (defined by Eq. (2)) at an angular frequency of 0.1 rad/s at 190° C. from 14 to 70.Type: ApplicationFiled: November 25, 2013Publication date: October 29, 2015Inventors: Jeanne Marie MACDONALD, Antonios K. DOUFAS, Jerome SARRAZIN, William Michael FERRY, Charles J. RUFF, Rahul Ravindra KULKARNI, Derek Wade THURMAN, Cynthia A. MITCHELL
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Publication number: 20150274907Abstract: This invention relates in one aspect to propylene polymers comprising propylene, said polymers having a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of 10 dg/min to 25 dg/min; a Dimensionless Stress Ratio/Loss Tangent Index R2 at 190° C. from 1.5 to 28; an average meso run length determined by 13C NMR of at least 70 or higher; and an MFR MFR Ratio of at least 1.0 and optionally, a Loss Tangent, tan ?, at an angular frequency of 0.1 rad/s at 190° C. from 14 to 100. The inventive propylene polymer compositions are useful in in molded articles and non-woven fibers and fabrics.Type: ApplicationFiled: November 25, 2013Publication date: October 1, 2015Inventors: Jeanne M. MacDonald, Antonios Doufas, Jerome Sarrazin, William M. Ferry, Charles J. Ruff, Rahul R. Kulkarni, Derek W. Thurman, Cynthia A. Mitchell
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Patent number: 9068034Abstract: This invention relates to in-reactor polymer blends comprising at least 60 mole % of propylene and from 0.01 to 10 mole % of at least one diene selected from the group of C6 to C12 ?,?-diene, norbornadiene, vinyl norbornene and mixtures thereof with the balance being ethylene. The blend comprises first and second polymers having different crystallinities and or different Tg's.Type: GrantFiled: September 11, 2012Date of Patent: June 30, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: Kevin R. Squire, Charles J. Ruff, Cesar A. Garcia-Franco, Peijun Jiang
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Patent number: 8940839Abstract: This invention relates to a composition comprising a multiblock polyolefin represented by the formula: PO—C(R11)(R12)—C(R13)?C(R14)—C(R15)(R16)—PO*, or isomers thereof, wherein R11, R12, R13, R14, R15, and R16, are each independently a substituted or unsubstituted C1 through C4 hydrocarbyl group or a hydrogen; PO and PO* are polyolefins; PO and PO* are each independently a substituted or unsubstituted hydrocarbyl group having 9 to 4000 carbon atoms, provided that at least one of PO and PO* are C20 or greater, said polyolefin having: 1) an internal unsaturation as shown by the 13C NMR peak at between about 128 and about 132 ppm; 2) an Mn ratio “Z”=0.1 to 10 where Z is the Mn (as determined by 13C NMR) divided by Mn (as determined according to Gel Permeation Chromotography using polystyrene standards); and 3) optionally, from 0.3(J) and 0.Type: GrantFiled: March 25, 2011Date of Patent: January 27, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: John R. Hagadorn, Charles J. Ruff, Renuka N. Ganesh, Patrick Brant
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Patent number: 8841397Abstract: This invention relates to higher olefin vinyl terminated polymers having an Mn of at least 200 g/mol (measured by 1H NMR) including of one or more C4 to C40 higher olefin derived units, where the higher olefin vinyl terminated polymer comprises substantially no propylene derived units; and wherein the higher olefin polymer has at least 5% allyl chain ends and processes for the production thereof. These vinyl terminated higher olefin polymers may optionally include ethylene derived units.Type: GrantFiled: September 27, 2012Date of Patent: September 23, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Matthew W. Holtcamp, Charles J. Ruff, Donna J. Crowther, John R. Hagadorn, Patrick Brant
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Patent number: 8841394Abstract: This invention relates to a vinyl terminated higher olefin copolymer having an Mn of 300 g/mol or more (measured by 1H NMR) comprising: (i) from about 20 to about 99.9 mol % of at least one C5 to C40 higher olefin monomer; and (ii) from about 0.1 to about 80 mol % of propylene; wherein the higher olefin copolymer has at least 40% allyl chain ends. The copolymer may also have an isobutyl chain end to allyl chain end ratio of less than 0.7:1 and/or an allyl chain end to vinylidene chain end ratio of greater than 2:1.Type: GrantFiled: January 30, 2013Date of Patent: September 23, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Donna J. Crowther, Matthew W. Holtcamp, John R. Hagadorn, Charles J. Ruff, George Rodriguez, Patrick Brant
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Patent number: 8809456Abstract: This invention relates to methods for producing an alkene terminated polystyrene, including: contacting a styrenic block copolymer and an alkene in the presence of a metathesis catalyst under conditions sufficient to produce an alkene terminated polystyrene having an unsaturation functionality of at least 0.7 and a MWD of about 1.5 or less. Methods for producing functionalized polymers and polyethylene blend composition comprising these functionalized polymers are also disclosed.Type: GrantFiled: April 18, 2012Date of Patent: August 19, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Mun F. Tse, Aspy K. Mehta, Joann M. Canich, Matthew W. Holtcamp, John R. Hagadorn, Charles J. Ruff
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Publication number: 20140213745Abstract: This invention relates method to prepare and compositions pertaining to an amorphous polymer comprising: at least 95 mol % propylene and 0 to 5 mol % vinyl monomer content, wherein the polymer has a g?vis of less than 0.95, an Mn of about 200 to about 10,000, an ?Hf of less than 10 J/g and has greater than 50% allylic chain end functionality.Type: ApplicationFiled: January 17, 2014Publication date: July 31, 2014Inventors: Peijun Jiang, Charles J. Ruff
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Publication number: 20140088263Abstract: This invention relates to the reaction product(s) of a polyalkylhydrosiloxane and a vinyl terminated macromonomer (VTM).Type: ApplicationFiled: September 20, 2013Publication date: March 27, 2014Inventors: Donna J. Crowther, Man Kit Ng, Charles J. Ruff, Patrick Brant, Jacqueline A. Lovell, Carlos R. Lopez-Barron