Patents by Inventor Sarvesh K. Agrawal
Sarvesh K. Agrawal 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: 11060045Abstract: Systems and methods are provided for processing a feed derived from a renewable source to form oligomerized compounds corresponding to waxes, ketone waxes, and/or lubricant boiling range compounds. The oligomerized compounds derived from the renewable source can have various novel properties relative to waxes and/or lubricant boiling range compounds derived from mineral sources or derived from renewable sources in a conventional manner. The oligomerized compounds can be derived from a renewable source including fatty acids and/or fatty acid derivatives, such as glycerides (including triglycerides) and fatty amides. Optionally but preferably, at least a portion of the fatty acids and/or fatty acid derivatives can include olefinic bonds.Type: GrantFiled: June 19, 2017Date of Patent: July 13, 2021Assignee: ExxonMobil Research and Engineering CompanyInventors: Virginia M. Reiner, Michel Daage, Kun Wang, Chunping Wu, Sarvesh K. Agrawal
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Patent number: 11021676Abstract: Wax compositions are provided with improved properties for various applications, such as coating of composite cellulosic materials, e.g., composite wood material, more specifically oriented strand board. As described herein, wax compositions include a kinematic viscosity measured at 100° C. of ?13.1 mm2/s; and a contact angle on glass of ?34.4°, which provide enhanced water proofing properties. The wax composition may have a flash point of greater than 450° F. Wax composition are provided with improved properties for candle jars. As described herein, candle jar wax compositions include 150N foots oil and 600N slack wax. The wax composition can include up to about 80% 150N foots oil.Type: GrantFiled: February 14, 2017Date of Patent: June 1, 2021Assignee: ExxonMobil Research and Engineering CompanyInventors: Sarvesh K. Agrawal, Joseph P. Rud, Larry E. Hoch
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Patent number: 10774286Abstract: The present disclosure provides a grease composition with improved water resistance and mechanical stability at high-temperatures, including: at least one base oil; a water insoluble thickener; and a low molecular weight thixotropic polyamide composition having molecular weight distribution characteristics meeting the requirement described by the relationship: ( A + D ) ( B + C ) ? 0.05 where A=the % mass of the polyamide composition with a molecular weight greater than 1700 AMU; B=the % mass of the polyamide composition with a molecular weight between 1100 AMU and 1300 AMU; C=the % mass of the polyamide composition with a molecular weight between 700 AMU and 1000 AMU; and D=the % mass of the polyamide composition with a molecular weight of 600 AMU or lower (determined by GPC). The grease composition of the present disclosure provides a less than 50 penetration point change as determined by ASTM-D7342, a less than 10 mg weight loss as determined by ASTM-D4170, or both.Type: GrantFiled: December 12, 2018Date of Patent: September 15, 2020Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Sarvesh K. Agrawal, James E. Spagnoli, Chengrong Wang
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Publication number: 20200199473Abstract: This disclosure relates to grease compositions having at least one base oil, at least one soap or non-soap thickener, and at least one elastomeric triblock copolymer of the general configuration A-B-A, in which A is a relatively hydrophobic polymer block and B is a relatively hydrophilic polymer block, and in which A forms less than 50% by weight of the total molecular weight of the elastomeric triblock copolymer. When the grease compositions are used under high shear conditions, structural stability and resistance to breaking down in accordance with ASTM D7342 is improved. When the grease compositions are used in low temperature conditions, low temperature starting and running torque in accordance with ASTM D1478 is improved.Type: ApplicationFiled: December 9, 2019Publication date: June 25, 2020Inventor: Sarvesh K. Agrawal
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Patent number: 10676689Abstract: Grease compositions are provided that can have one or more unexpectedly beneficial low temperature properties even though the grease compositions are formed from lower value components that traditional low temperature greases. The unexpectedly beneficial low temperature properties can be achieved in part by grease compositions that include a naphthenic base stock having a viscosity index of roughly 120 or less and/or a pour point of ?20° C. or more while having a naphthenes content of 60 wt % or more. In some aspects, the naphthenic base stock can have an aromatics content of 20 wt % or less.Type: GrantFiled: December 11, 2018Date of Patent: June 9, 2020Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Sarvesh K. Agrawal, James E. Spagnoli, David A. Blain
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Patent number: 10450256Abstract: The present disclosure provides ketone waxes, methods of forming ketone waxes, and compositions comprising ketone waxes. In at least one embodiment, a ketone wax is provided. The ketone wax includes about 50 wt % or greater C40-C90 ketone content; about 50 wt % or greater of the ketone wax has a boiling point of 961° F. or greater; and a paraffins content of less than about 10 wt %, as determined by 2-dimensional gas chromatography. In at least one embodiment, a method for forming a C40-C90 ketone wax includes exposing a feed stock to a basic catalyst under conditions suitable for coupling unsaturated carbon chains from the feed to form a composition including a ketone wax, oligomerizing the ketone wax to form a ketone wax having C40-C90 ketone wax, and distilling and/or extracting the oligomerized ketone wax to provide a C40-C90 ketone wax of the present disclosure.Type: GrantFiled: September 21, 2018Date of Patent: October 22, 2019Assignee: ExxonMobil Research and Engineering CompanyInventors: Virginia M. Reiner, Michel Daage, Kun Wang, Sarvesh K. Agrawal, Frank C. Wang
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Patent number: 10351731Abstract: Wax compositions are provided with improved properties for various applications, such as coating of corrugated cardboard or other cellulosic paper materials. As described herein, paraffin waxes having a very broad molecular weight distribution are provided, e.g., 95% carbon number spread of at least 18 carbon atoms, which result in wax compositions with a relatively hard needle penetration value, suitable blend kinematic viscosity, and provide equivalent or better wet strength and water proofing properties as compared to waxes currently commercially used in corrugated coating. The paraffin wax compositions described herein also provide a higher congealing point, thereby benefiting the high temperature properties such as oil bleed, appearance and friction coefficient of the corrugating wax coating.Type: GrantFiled: October 22, 2015Date of Patent: July 16, 2019Assignee: ExxonMobil Research and Engineering CompanyInventors: Sarvesh K. Agrawal, Larry E. Hoch
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Publication number: 20190203150Abstract: Grease compositions are provided that can have one or more unexpectedly beneficial low temperature properties even though the grease compositions are formed from lower value components that traditional low temperature greases. The unexpectedly beneficial low temperature properties can be achieved in part by grease compositions that include a naphthenic base stock having a viscosity index of roughly 120 or less and/or a pour point of ?20° C. or more while having a naphthenes content of 60 wt % or more. In some aspects, the naphthenic base stock can have an aromatics content of 20 wt % or less.Type: ApplicationFiled: December 11, 2018Publication date: July 4, 2019Inventors: Sarvesh K. AGRAWAL, James E. SPAGNOLI, David A. BLAIN
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Publication number: 20190203149Abstract: The present disclosure provides a grease composition with improved water resistance and mechanical stability at high-temperatures, including: at least one base oil; a water insoluble thickener; and a low molecular weight thixotropic polyamide composition having molecular weight distribution characteristics meeting the requirement described by the relationship: ( A + D ) ( B + C ) ? 0.05 where A=the % mass of the polyamide composition with a molecular weight greater than 1700 AMU; B=the % mass of the polyamide composition with a molecular weight between 1100 AMU and 1300 AMU; C=the % mass of the polyamide composition with a molecular weight between 700 AMU and 1000 AMU; and D=the % mass of the polyamide composition with a molecular weight of 600 AMU or lower (determined by GPC). The grease composition of the present disclosure provides a less than 50 penetration point change as determined by ASTM-D7342, a less than 10 mg weight loss as determined by ASTM-D4170, or both.Type: ApplicationFiled: December 12, 2018Publication date: July 4, 2019Inventors: Sarvesh K. AGRAWAL, James E. SPAGNOLI, Chengrong WANG
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Publication number: 20190106371Abstract: The present disclosure provides ketone waxes, methods of forming ketone waxes, and compositions comprising ketone waxes. In at least one embodiment, a ketone wax is provided. The ketone wax includes about 50 wt % or greater C40-C90 ketone content; about 50 wt % or greater of the ketone wax has a boiling point of 961° F. or greater; and a paraffins content of less than about 10 wt %, as determined by 2-dimensional gas chromatography. In at least one embodiment, a method for forming a C40-C90 ketone wax includes exposing a feed stock to a basic catalyst under conditions suitable for coupling unsaturated carbon chains from the feed to form a composition including a ketone wax, oligomerizing the ketone wax to form a ketone wax having C40-C90 ketone wax, and distilling and/or extracting the oligomerized ketone wax to provide a C40-C90 ketone wax of the present disclosure.Type: ApplicationFiled: September 21, 2018Publication date: April 11, 2019Inventors: Virginia M. Reiner, Michel Daage, Kun Wang, Sarvesh K. Agrawal, Frank C. Wang
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Publication number: 20190031972Abstract: A wax composition can be incorporated into a biomass mixture, such as a woody biomass mixture, for formation of pellets, such as wood fuel pellets. The addition of wax compositions with suitable amounts of n-paraffins relative to the amount of oil-in-wax can result in biomass pellets with improved properties, such as improved durability and/or reduced tendency to uptake moisture during storage. Addition of a suitable wax composition can also allow for formation of biomass pellets with improved properties while also reducing or minimizing the power requirements during pellet formation.Type: ApplicationFiled: July 17, 2018Publication date: January 31, 2019Inventors: Larry E. HOCH, Sarvesh K. AGRAWAL, Todd T. NADASDI, Charles L. BAKER, JR., Daniel SALONI, Richard VENDITTI
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Patent number: 10030171Abstract: Wax compositions are provided with improved properties for various applications, such as coating of composite cellulosic materials, e.g., composite wood material, particleboard, medium density fiberboard, construction board or combination thereof. As described herein, paraffin wax compositions are provided that have n-paraffin content of from about 30% wt to about 95% wt, and a 95% carbon number spread of from about 1 carbon atoms to about 23 carbon atoms, which provide enhanced water proofing properties as compared to waxes currently used.Type: GrantFiled: December 28, 2015Date of Patent: July 24, 2018Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Sarvesh K. Agrawal, Kent A. Baschwitz, Larry E. Hoch
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Publication number: 20180010061Abstract: Systems and methods are provided for processing a feed derived from a renewable source to form oligomerized compounds corresponding to waxes, ketone waxes, and/or lubricant boiling range compounds. The oligomerized compounds derived from the renewable source can have various novel properties relative to waxes and/or lubricant boiling range compounds derived from mineral sources or derived from renewable sources in a conventional manner. The oligomerized compounds can be derived from a renewable source including fatty acids and/or fatty acid derivatives, such as glycerides (including triglycerides) and fatty amides. Optionally but preferably, at least a portion of the fatty acids and/or fatty acid derivatives can include olefinic bonds.Type: ApplicationFiled: June 19, 2017Publication date: January 11, 2018Inventors: Virginia M. REINER, Michel DAAGE, Kun WANG, Chunping WU, Sarvesh K. AGRAWAL
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Publication number: 20170247573Abstract: Wax compositions are provided with improved properties for various applications, such as coating of composite cellulosic materials, e.g., composite wood material, more specifically oriented strand board. As described herein, wax compositions include a kinematic viscosity measured at 100° C. of ?13.1 mm2/s; and a contact angle on glass of ?34.4°, which provide enhanced water proofing properties. The wax composition may have a flash point of greater than 450° F. Wax composition are provided with improved properties for candle jars. As described herein, candle jar wax compositions include 150N foots oil and 600N slack wax. The wax composition can include up to about 80% 150N foots oil.Type: ApplicationFiled: February 14, 2017Publication date: August 31, 2017Inventors: Sarvesh K. Agrawal, Joseph P. Rud, Larry E. Hoch
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Publication number: 20160264780Abstract: Finished wax compositions with low aromatic content and high oil contents may be suitable for use in candle applications and/or food packaging and other food grade quality applications despite such high oil contents. Such wax compositions can reduce the need for wax refinement and/or post-processing, such as de-oiling, and increase the ease and efficiency of batch preparation and large volume manufacture.Type: ApplicationFiled: March 4, 2016Publication date: September 15, 2016Inventors: Sarvesh K. Agrawal, Sara L. Yohe, Larry E. Hoch, Elizabeth A. Turner, Frank C. Wang
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Publication number: 20160222251Abstract: Wax compositions are provided with improved properties for various applications, such as coating of composite cellulosic materials, e.g., composite wood material, particleboard, medium density fiberboard, construction board or combination thereof. As described herein, paraffin wax compositions are provided that have n-paraffin content of from about 30% wt to about 95% wt, and a 95% carbon number spread of from about 1 carbon atoms to about 23 carbon atoms, which provide enhanced water proofing properties as compared to waxes currently used.Type: ApplicationFiled: December 28, 2015Publication date: August 4, 2016Applicant: ExxonMobil Research and Engineering CompanyInventors: Sarvesh K. Agrawal, Kent A. Baschwitz, Larry E. Hoch
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Publication number: 20160122588Abstract: Wax compositions are provided with improved properties for various applications, such as coating of corrugated cardboard or other cellulosic paper materials. As described herein, paraffin waxes having a very broad molecular weight distribution are provided, e.g., 95% carbon number spread of at least 18 carbon atoms, which result in wax compositions with a relatively hard needle penetration value, suitable blend kinematic viscosity, and provide equivalent or better wet strength and water proofing properties as compared to waxes currently commercially used in corrugated coating. The paraffin wax compositions described herein also provide a higher congealing point, thereby benefiting the high temperature properties such as oil bleed, appearance and friction coefficient of the corrugating wax coating.Type: ApplicationFiled: October 22, 2015Publication date: May 5, 2016Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Sarvesh K. Agrawal, Larry E. Hoch
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Patent number: 9243162Abstract: Wax compositions are provided with improved properties for various applications, such as coating of corrugated cardboard or other cellulosic paper materials. In addition to wax, the compositions include a polymer with a hydrophobic backbone that is “functionalized” to incorporate a limited percentage of hydrophilic and/or polar groups. The compositions can optionally also include inorganic nanoparticles such as clay particles.Type: GrantFiled: August 28, 2014Date of Patent: January 26, 2016Assignee: ExxonMobil Research and Engineering CompanyInventors: Sarvesh K. Agrawal, Larry E. Hoch, Todd T. Nadasdi