Patents by Inventor Alistair D. Westwood
Alistair D. Westwood 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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Publication number: 20190300811Abstract: A block copolymer comprising a PAO block derived from alpha-olefin monomer(s) having a carbon backbone comprising more than six (6) carbon atoms per molecule and a poly(alkyl methacrylate) block derived from alkyl methacrylate monomer(s) having an alkyl group comprising at least six (6) carbon atoms forms micelles in hydrocarbon solvents and lubricant oil base stocks with large space volume even at low overall molecular weight. The block copolymer of this disclosure is particularly advantageous as viscosity modifier for lubricant oil compositions.Type: ApplicationFiled: March 26, 2019Publication date: October 3, 2019Inventors: Andy H. Tsou, Hillary L. Passino, Yong Yang, Patrick C. Chen, Alistair D. Westwood
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Publication number: 20190291400Abstract: Provided are multi-beam meltblowing apparatuses having a ridged collecting surface, methods for making multilayer meltblown composites using such apparatuses, and multilayer meltblown composites made therefrom. Also provided are a multilayer composite comprising an elastic layer and at least one ridged layer and a method for making the multilayer composite.Type: ApplicationFiled: April 3, 2019Publication date: September 26, 2019Inventors: Alistair D. Westwood, Galen C. Richeson
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Patent number: 9498932Abstract: Multilayer meltblown composites, articles made therefrom, and methods for making same. One method can include meltblowing a first material to form a first meltblown layer; meltblowing a second material to form a second meltblown layer; and meltblowing a third material to form a third meltblown layer, wherein each material is the same or different, each material includes at least one resin having a MFR of about 2,000 dg/min or less, as measured by ASTM D1238, 2.16 kg, 230° C., and at least one of the first, second, and third materials comprises an elastomer having a recovery of at least 70% after 100% deformation, as determined by ASTM D412.Type: GrantFiled: September 30, 2010Date of Patent: November 22, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Galen C. Richeson, Alistair D. Westwood, William Michael Ferry
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Publication number: 20140323003Abstract: The present invention relates to bicomponent polymer fibers, and to processes for forming those fibers. Bicomponent polymer fibers are described, having a core comprising a core polymer and a sheath comprising a sheath polymer, wherein the sheath polymer is a polyolefin having an Mw less than about 65,000 g/mol. The core polymer has an Mw at least about 20,000 g/mol greater than the Mw of the sheath polymer. Processes for forming bicomponent fibers are also described, comprising (i) forming a molten blend of a core polymer and a sheath polymer; (ii) extruding the molten polymer blend using an extrusion die having a length to diameter ratio greater than or equal to about 10 and under shear conditions sufficient to drive the sheath polymer to the die wall; and (iii) forming meltblown fibers having a core comprising the core polymer and a sheath comprising the sheath polymer.Type: ApplicationFiled: October 18, 2011Publication date: October 30, 2014Inventors: Galen C. Richeson, Alistair D. Westwood, Aspy K. Mehta
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Patent number: 8796376Abstract: A functionalized polyolefin having one or more pyridazine moieties is disclosed herein. A method to produce the functionalized polyolefin is also disclosed. A composition including the functionalized polyolefin is also disclosed.Type: GrantFiled: March 26, 2012Date of Patent: August 5, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Rahul R. Kulkarni, Pradeep P. Shirodkar, Alistair D. Westwood, Donna J. Crowther, Wei Tang
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Patent number: 8742019Abstract: Crosslinked polyolefin blends, methods for their production, and articles made of the same are provided. In at least one specific embodiment, the polyolefin blends comprise a first polymer formed in a first reactor and a second polymer formed in a second reactor. The first and second polymers, as well as the resulting blend, may comprise units derived from propylene, ethylene, and a diene. The blended composition can then be compounded with one or more coagents, antioxidants, and/or other additives and crosslinked, preferably by exposure to energetic photons. The crosslinked polymers are particularly useful for making fibers, films, and nonwovens.Type: GrantFiled: September 24, 2010Date of Patent: June 3, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Sunny Jacob, Alistair D. Westwood, Justin R. Huber
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Patent number: 8668975Abstract: An in situ compositionally modulated meltspun fabric and method for making the same. The meltspun fabric has at least one layer comprising a plurality of discrete regions of fiber. At least two discrete regions of fiber are inelastic or extensible and at least one discrete region of fiber is elastic or extensible. The layer is compositionally modulated in the cross direction.Type: GrantFiled: November 5, 2010Date of Patent: March 11, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventor: Alistair D. Westwood
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Publication number: 20130253120Abstract: A functionalized polyolefin having one or more pyridazine moieties is disclosed herein. A method to produce the functionalized polyolefin is also disclosed. A composition including the functionalized polyolefin is also disclosed.Type: ApplicationFiled: March 26, 2012Publication date: September 26, 2013Inventors: Rahul R. KULKARNI, Pradeep P. Shirodkar, Alistair D. Westwood, Donna J. Crowther, Wei Tang
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Publication number: 20120202915Abstract: Crosslinked polyolefin blends, methods for their production, and articles made of the same are provided. In at least one specific embodiment, the polyolefin blends comprise a first polymer formed in a first reactor and a second polymer formed in a second reactor. The first and second polymers, as well as the resulting blend, may comprise units derived from propylene, ethylene, and a diene. The blended composition can then be compounded with one or more coagents, antioxidants, and/or other additives and crosslinked, preferably by exposure to energetic photons. The crosslinked polymers are particularly useful for making fibers, films, and nonwovens.Type: ApplicationFiled: September 24, 2010Publication date: August 9, 2012Inventors: Sunny Jacob, Alistair D. Westwood, Justin R. Huber
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Publication number: 20120123374Abstract: Meltblown nonwoven compositions and processes for forming them are described herein. In one or more embodiments, the invention is directed to meltblown nonwoven fabrics having at least one elastic layer, wherein the elastic layer comprises a propylene-based polymer having an MFR greater than about 25 g/10 min. Additionally, the propylene-based polymer comprises from about 5 to about 25 wt % of one or more C2 and/or C4-C12 ?-olefins and has a triad tacticity greater than about 90% and a heat of fusion less than about 75 J/g. The present invention is also directed to processes for forming meltblown nonwoven fabrics comprising forming a molten propylene-based polymer having an MFR of at least about 25 g/10 min, forming fibers comprising the propylene-based polymer, and forming an elastic nonwoven layer from the fibers.Type: ApplicationFiled: October 18, 2011Publication date: May 17, 2012Inventors: Galen C. Richeson, Alistair D. Westwood
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Patent number: 8178031Abstract: Methods for making a crosslinked elastomeric composition and articles made of the same are provided. In at least one specific embodiment, an elastomeric composition comprising at least one propylene-based polymer is blended with at least one component selected from the group consisting of multifunctional acrylates, multifunctional methacrylates, functionalized polybutadiene resins, functionalized cyanurate, and allyl isocyanurate; and blended with at least one component selected from the group consisting of hindered phenols, phosphites, and hindered amines. The propylene-based polymer can include propylene derived units and one or more dienes, and have a triad tacticity of from 50% to 99% and a heat of fusion of less than 80 J/g. The blended composition can then be extruded and crosslinked. The extruded polymer can be crosslinked using electron beam radiation having an e-beam dose of about 100 KGy or less. The crosslinked polymers are particularly useful for making fibers and films.Type: GrantFiled: December 3, 2010Date of Patent: May 15, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Sunny Jacob, Alistair D. Westwood, Tonson Abraham
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Publication number: 20110123775Abstract: An in situ compositionally modulated meltspun fabric and method for making the same. The meltspun fabric has at least one layer comprising a plurality of discrete regions of fiber. At least two discrete regions of fiber are inelastic or extensible and at least one discrete region of fiber is elastic or extensible. The layer is compositionally modulated in the cross direction.Type: ApplicationFiled: November 5, 2010Publication date: May 26, 2011Inventor: Alistair D. Westwood
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Publication number: 20110081529Abstract: Multilayer meltblown composites, articles made therefrom, and methods for making same. One method can include meltblowing a first material to form a first meltblown layer; meltblowing a second material to form a second meltblown layer; and meltblowing a third material to form a third meltblown layer, wherein each material is the same or different, each material includes at least one resin having a MFR of about 2,000 dg/min or less, as measured by ASTM D1238, 2.16 kg, 230° C., and at least one of the first, second, and third materials comprises an elastomer having a recovery of at least 70% after 100% deformation, as determined by ASTM D412.Type: ApplicationFiled: September 30, 2010Publication date: April 7, 2011Inventors: Galen C. Richeson, Alistair D. Westwood, William Michael Ferry
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Publication number: 20110077317Abstract: Methods for making a crosslinked elastomeric composition and articles made of the same are provided. In at least one specific embodiment, an elastomeric composition comprising at least one propylene-based polymer is blended with at least one component selected from the group consisting of multifunctional acrylates, multifunctional methacrylates, functionalized polybutadiene resins, functionalized cyanurate, and allyl isocyanurate; and blended with at least one component selected from the group consisting of hindered phenols, phosphites, and hindered amines. The propylene-based polymer can include propylene derived units and one or more dienes, and have a triad tacticity of from 50% to 99% and a heat of fusion of less than 80 J/g. The blended composition can then be extruded and crosslinked. The extruded polymer can be crosslinked using electron beam radiation having an e-beam dose of about 100 KGy or less. The crosslinked polymers are particularly useful for making fibers and films.Type: ApplicationFiled: December 3, 2010Publication date: March 31, 2011Inventors: Sunny Jacob, Alistair D. Westwood, Tonson Abraham
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Patent number: 7867433Abstract: Methods for making a crosslinked elastomeric composition and articles made of the same are provided. In at least one specific embodiment, an elastomeric composition comprising at least one propylene-based polymer is blended with at least one component selected from the group consisting of multifunctional acrylates, multifunctional methacrylates, functionalized polybutadiene resins, functionalized cyanurate, and allyl isocyanurate; and blended with at least one component selected from the group consisting of hindered phenols, phosphites, and hindered amines. The propylene-based polymer can include propylene derived units and one or more dienes, and have a triad tacticity of from 50% to 99% and a heat of fusion of less than 80 J/g. The blended composition can then be extruded and crosslinked. The extruded polymer can be crosslinked using electron beam radiation having an e-beam dose of about 100 KGy or less. The crosslinked polymers are particularly useful for making fibers and films.Type: GrantFiled: May 30, 2008Date of Patent: January 11, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Sunny Jacob, Alistair D. Westwood, Tonson Abraham
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Publication number: 20090298964Abstract: Methods for making a crosslinked elastomeric composition and articles made of the same are provided. In at least one specific embodiment, an elastomeric composition comprising at least one propylene-based polymer is blended with at least one component selected from the group consisting of multifunctional acrylates, multifunctional methacrylates, functionalized polybutadiene resins, functionalized cyanurate, and allyl isocyanurate; and blended with at least one component selected from the group consisting of hindered phenols, phosphites, and hindered amines. The propylene-based polymer can include propylene derived units and one or more dienes, and have a triad tacticity of from 50% to 99% and a heat of fusion of less than 80 J/g. The blended composition can then be extruded and crosslinked. The extruded polymer can be crosslinked using electron beam radiation having an e-beam dose of about 100 KGy or less. The crosslinked polymers are particularly useful for making fibers and films.Type: ApplicationFiled: May 30, 2008Publication date: December 3, 2009Inventors: Sunny Jacob, Alistair D. Westwood, Tonson Abraham
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Patent number: 7615589Abstract: An elastomeric composition and method for making the same are provided. The composition can include a rubber component comprising one or more ethylene-propylene elastomers, one or more peroxide curing agents and one or more non-functionalized plasticizers having a viscosity index of 120 or more.Type: GrantFiled: February 2, 2007Date of Patent: November 10, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Alistair D. Westwood, Yann Devorest, Eric P. Jourdain, Olivier Georjon, Bryan R. Chapman, Michael C. Bulawa, Bruce R. Lundmark
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Publication number: 20080188600Abstract: An elastomeric composition and method for making the same are provided. The composition can include a rubber component comprising one or more ethylene-propylene elastomers, one or more peroxide curing agents and one or more non-functionalized plasticizers having a viscosity index of 120 or more.Type: ApplicationFiled: February 2, 2007Publication date: August 7, 2008Inventors: Alistair D. Westwood, Yann Devorest, Eric P. Jourdain, Olivier Georjon, Bryan R. Chapman, Michael C. Bulawa, Bruce R. Lundmark
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Patent number: 7312369Abstract: This invention provides an attrition resistant metalloaluminophosphate molecular sieve catalyst composition, methods of making the catalyst composition and processes for using the catalyst composition. The metalloaluminophosphate molecular sieve catalyst composition is highly attrition resistant in dried as well as fully calcined forms.Type: GrantFiled: April 28, 2004Date of Patent: December 25, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yun-Feng Chang, Stephen N. Vaughn, Kenneth R. Clem, Luc R. Martens, Alistair D. Westwood, Jeffery W. Sprinkle