Patents by Inventor Yu Feng Wang
Yu Feng Wang 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: 20170260073Abstract: A sludge treatment system with sludge drying acceleration function includes at least one sedimentation tank, at least one sludge pipe, and at least one group of hydroponic plant. The at least one sedimentation tank is disposed at the downstream of a reservoir. The at least one sludge pipe is disposed in the at least one sedimentation tank for leading the sludge into the at least one sedimentation tank through a leading method, such that the sludge in the at least one sedimentation tank is divided into a water layer and a mud layer. The at least one group of hydroponic plant is planted in the water layer of the at least one sedimentation tank, such that the growth of the at least one group of hydroponic plant accelerates the sludge drying process in the sedimentation tank.Type: ApplicationFiled: March 10, 2016Publication date: September 14, 2017Inventors: Ju-Yun Gu, Wei-Ting Hsu, Yu-Feng Wang, Wei-Shuin Chen
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Publication number: 20160115306Abstract: A blended multimodal polymer product is disclosed that comprises a first polymer, wherein the first polymer is a homopolymer of propylene or a propylene copolymer having an ethylene or a C4 to C10 olefin comonomer; and a second polymer, wherein the second polymer is a propylene homopolymer and a propylene copolymer having an ethylene or a C4 to C10 olefin comonomer, and wherein the first polymer and second polymer have a difference in heat of fusion of about 25 J/g or more. Methods for making such a polymer product using at least two reactors in parallel and for separating a propylene-based polymer from a solvent using a liquid-phase separator are also disclosed.Type: ApplicationFiled: January 8, 2016Publication date: April 28, 2016Inventors: Periagaram S. Ravishankar, Yu Feng Wang, Luke P. Stephens, Florin Barsan, Douglas A. Berti
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Patent number: 9260635Abstract: A blended multimodal polymer product is disclosed that comprises a first polymer, wherein the first polymer is a homopolymer of propylene or a propylene copolymer having an ethylene or a C4 to C10 olefin comonomer; and a second polymer, wherein the second polymer is a propylene homopolymer and a propylene copolymer having an ethylene or a C4 to C10 olefin comonomer, and wherein the first polymer and second polymer have a difference in heat of fusion of about 25 J/g or more. Methods for making such a polymer product using at least two reactors in parallel and for separating a propylene-based polymer from a solvent using a liquid-phase separator are also disclosed.Type: GrantFiled: February 28, 2013Date of Patent: February 16, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Periagaram S. Ravishankar, Yu Feng Wang, Luke P. Stephens, Florin Barsan, Douglas A. Berti
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Patent number: 9138713Abstract: The present invention relates to a process of forming a polymer, the process comprising polymerizing olefin monomers to form a reaction mixture, treating the reaction mixture to form a first polymer-rich phase, treating the first polymer-rich phase to form a second polymer-rich phase, and devolatilizing the second polymer-rich phase, the process further comprising at least one step of adjusting the temperature of a first and/or the second polymer-rich phase before the devolatilization. The present invention also relates to a plant that is useful for the process provided above.Type: GrantFiled: June 20, 2014Date of Patent: September 22, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventor: Yu Feng Wang
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Publication number: 20150045513Abstract: A blended multimodal polymer product is disclosed that comprises a first polymer, wherein the first polymer is a homopolymer of propylene or a propylene copolymer having an ethylene or a C4 to C10 olefin comonomer; and a second polymer, wherein the second polymer is a propylene homopolymer and a propylene copolymer having an ethylene or a C4 to C10 olefin comonomer, and wherein the first polymer and second polymer have a difference in heat of fusion of about 25 J/g or more. Methods for making such a polymer product using at least two reactors in parallel and for separating a propylene-based polymer from a solvent using a liquid-phase separator are also disclosed.Type: ApplicationFiled: February 28, 2013Publication date: February 12, 2015Inventors: Periagaram S. Ravishankar, Yu Feng Wang, Luke P. Stephens, Florin Barsan, Douglas A. Berti
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Publication number: 20140301903Abstract: The present invention relates to a process of forming a polymer, the process comprising polymerizing olefin monomers to form a reaction mixture, treating the reaction mixture to form a first polymer-rich phase, treating the first polymer-rich phase to form a second polymer-rich phase, and devolatilizing the second polymer-rich phase, the process further comprising at least one step of adjusting the temperature of a first and/or the second polymer-rich phase before the devolatilization. The present invention also relates to a plant that is useful for the process provided above.Type: ApplicationFiled: June 20, 2014Publication date: October 9, 2014Inventor: Yu Feng Wang
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Patent number: 8796408Abstract: The present invention relates to a process of forming a polymer, the process comprising polymerizing olefin monomers to form a reaction mixture, treating the reaction mixture to form a first polymer-rich phase, treating the first polymer-rich phase to form a second polymer-rich phase, and devolatilizing the second polymer-rich phase, the process further comprising at least one step of adjusting the temperature of a first and/or the second polymer-rich phase before the devolatilization. The present invention also relates to a plant that is useful for the process provided above.Type: GrantFiled: August 31, 2012Date of Patent: August 5, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventor: Yu Feng Wang
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Publication number: 20140066586Abstract: The present invention relates to a process of forming a polymer, the process comprising polymerizing olefin monomers to form a reaction mixture, treating the reaction mixture to form a first polymer-rich phase, treating the first polymer-rich phase to form a second polymer-rich phase, and devolatilizing the second polymer-rich phase, the process further comprising at least one step of adjusting the temperature of a first and/or the second polymer-rich phase before the devolatilization. The present invention also relates to a plant that is useful for the process provided above.Type: ApplicationFiled: August 31, 2012Publication date: March 6, 2014Inventor: Yu Feng Wang
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Patent number: 8524859Abstract: In the production of isobutylene-based elastomers the product obtained from the polymerization process is often in the form of a stream. Described herein are an apparatus and a process for removal of hydrocarbon liquids from the elastomer. The process comprises the steps of obtaining a stream comprising hydrocarbon liquids, either solvents or diluents, and an isobutylene-based elastomer; passing the stream through a kneader to volatize the hydrocarbon liquids from the elastomer.Type: GrantFiled: March 23, 2011Date of Patent: September 3, 2013Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yu Feng Wang, Richard C-M Yeh
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Publication number: 20120071619Abstract: In the production of isobutylene-based elastomers the product obtained from the polymerization process is often in the form of a stream. Described herein are an apparatus and a process for removal of hydrocarbon liquids from the elastomer. The process comprises the steps of obtaining a stream comprising hydrocarbon liquids, either solvents or diluents, and an isobutylene-based elastomer; passing the stream through a kneader to volatize the hydrocarbon liquids from the elastomer.Type: ApplicationFiled: March 23, 2011Publication date: March 22, 2012Inventors: Yu Feng WANG, Richard C-M Yeh
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Publication number: 20110162751Abstract: Provided are coated petrochemical and chemical industry devices and methods of making and using such coated devices. In one form, the coated petrochemical and chemical industry device includes a petrochemical and chemical industry device including one or more bodies, and a coating on at least a portion of the one or more bodies, wherein the coating is chosen from an amorphous alloy, a heat-treated electroless or electro plated based nickel-phosphorous composite with a phosphorous content greater than 12 wt %, graphite, MoS2, WS2, a fullerene based composite, a boride based cermet, a quasicrystalline material, a diamond based material, diamond-like-carbon (DLC), boron nitride, and combinations thereof. The coated petrochemical and chemical industry devices may provide for reduced friction, wear, corrosion and other properties required for superior performance.Type: ApplicationFiled: December 1, 2010Publication date: July 7, 2011Applicant: ExxonMobil Research and Engineering CompanyInventors: Brian Joseph Fitzgerald, Hyun-Woo Jin, Raghavan Ayer, Yu Feng Wang
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Patent number: 7858735Abstract: In the production of elastomers the product obtained from the polymerization process is often in the form of a slurry. Described herein are an apparatus and a process for “finishing” the elastomer, i.e., dewatering and drying the elastomer. The process comprises the steps of obtaining a slurry comprising water and elastomer; passing the slurry through a first dewatering device to produce a wet elastomer crumb, wherein the first dewatering device comprises two dewatering extruders in parallel; passing the wet elastomer crumb through a second dewatering device; and then passing the wet elastomer crumb through a drying device to produce a dried elastomer crumb.Type: GrantFiled: May 29, 2009Date of Patent: December 28, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Richard C. Yeh, Yu Feng Wang, Jean-Paul Swoboda, Oscar K. Broussard, III
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Publication number: 20100305301Abstract: In the production of elastomers the product obtained from the polymerization process is often in the form of a slurry. Described herein are an apparatus and a process for “finishing” the elastomer, i.e., dewatering and drying the elastomer. The process comprises the steps of obtaining a slurry comprising water and elastomer; passing the slurry through a first dewatering device to produce a wet elastomer crumb, wherein the first dewatering device comprises two dewatering extruders in parallel; passing the wet elastomer crumb through a second dewatering device; and then passing the wet elastomer crumb through a drying device to produce a dried elastomer crumb.Type: ApplicationFiled: May 29, 2009Publication date: December 2, 2010Inventors: Richard C. Yeh, Yu Feng Wang, Jean-Paul Swoboda, Oscar K. Broussard, III
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Patent number: 6630538Abstract: Thermoplastic elastomer compositions having improved processabillity while maintaining good physical properties are prepared from a mixture of olefinic rubber and a polypropylene composition having a melt flow rate in the range of from about 0.5 to about 5 dg/min. and a molecular weight distribution Mw/Mn of greater than 5.5 up to about 20. The rubber component of the mixture may be at least partially cured by dynamic vulcanization.Type: GrantFiled: August 31, 2001Date of Patent: October 7, 2003Inventors: Maria D. Ellul, Prasadarao Meka, Kang-Bo Wang, Yu-Feng Wang
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Patent number: 6545101Abstract: Polyisobutylene (PIB) functionalized with terminal reactive unsaturation is disclosed. Carbocationically polymerized monohalogen-terminated PIB is dehydrohalogenated in a hydrocarbon solvent using an alkoxide of the formula RO-M wherein R is alkyl of at least 5 carbon atoms and M is alkali metal. The PIB obtained has terminal unsaturation which is 100% in the reactive ‘exo’ form which can be converted to succinic anhydride groups (PIB-SA) by the ene reaction with maleic anhydride. The PIB-SA is reactive with amine functional dendrimers to obtain a star-branched polymer having a dendrimer core and PIB branches joined by succinimide linkages. Blends of the star-branched polymer with polypropylene have improved energy absorption properties and controllable moisture/oxygen permeabilities useful in films.Type: GrantFiled: February 6, 2001Date of Patent: April 8, 2003Assignee: ExxonMobil Chemical Patents Inc.Inventors: Pawan Kumar Agarwal, Hsien-Chang Wang, Yu Feng Wang, Jean M. J. Frechet, Shah A. Haque
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Publication number: 20030050433Abstract: Polyisobutylene (PIB) functionalized with terminal reactive unsaturation is disclosed. Carbocationically polymerized monohalogen-terminated PIB is dehydrohalogenated in a hydrocarbon solvent using an alkoxide of the formula RO-M wherein R is alkyl of at least 5 carbon atoms and M is alkali metal. The PIB obtained has terminal unsaturation which is 100% in the reactive ‘exo’ form which can be converted to succinic anhydride groups (PIB-SA) by the ene reaction with maleic anhydride. The PIB-SA is reactive with amine functional dendrimers to obtain a star-branched polymer having a dendrimer core and PIB branches joined by succinimide linkages. Blends of the star-branched polymer with polypropylene have improved energy absorption properties and controllable moisture/oxygen permeabilities useful in films.Type: ApplicationFiled: October 23, 2002Publication date: March 13, 2003Inventors: Pawan Kumar Agarwal, Hsien-Chang Wang, Yu Feng Wang, Jean M. J. Frechet, Shah A. Haque
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Publication number: 20010007897Abstract: Polyisobutylene (PIB) functionalized with terminal reactive unsaturation is disclosed. Carbocationically polymerized monohalogen-terminated PIB is dehydrohalogenated in a hydrocarbon solvent using an alkoxide of the formula RO-M wherein R is alkyl of at least 5 carbon atoms and M is alkali metal. The PIB obtained has terminal unsaturation which is 100% in the reactive ‘exo’ form which can be converted to succinic anhydride groups (PIB-SA) by the ene reaction with maleic anhydride. The PIB-SA is reactive with amine functional dendrimers to obtain a star-branched polymer having a dendrimer core and PIB branches joined by succinimide linkages. Blends of the star-branched polymer with polypropylene have improved energy absorption properties and controllable moisture/oxygen permeabilities useful in films.Type: ApplicationFiled: February 6, 2001Publication date: July 12, 2001Inventors: Pawan Kumar Agarwal, Hsien-Chang Wang, Yu Feng Wang, Jean M.J. Frechet, Shah A. Haque
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Patent number: 6228978Abstract: Polyisobutylene (PIB) functionalized with terminal reactive unsaturation is disclosed. Carbocationically polymerized monohalogen-terminated PIB is dehydrohalogenated in a hydrocarbon solvent using an alkoxide of the formula RO-M wherein R is alkyl of at least 5 carbon atoms and M is alkali metal. The PIB obtained has terminal unsaturation which is 100% in the reactive ‘exo’ form which can be converted to succinic anhydride groups (PIB-SA) by the ene reaction with maleic anhydride. The PIB-SA is reactive with amine functional dendrimers to obtain a star-branched polymer having a dendrimer core and PIB branches joined by succininide linkages. Blends of the star-branched polymer with polypropylene have improved energy absorption properties and controllable moisture/oxygen permeabilities useful in films.Type: GrantFiled: June 19, 1998Date of Patent: May 8, 2001Assignee: Exxon Mobil Chemical Patents IncInventors: Pawan Kumar Agarwal, Hsien-Chang Wang, Yu Feng Wang, Jean M. J. Frechet, Shah A. Haque
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Patent number: 6111019Abstract: This invention is for LLDPE blends with an ethylene-norbornene copolymer for resins and improved toughness and processibility for film production. This invention provides LLDPE based resins which are significantly improved with respect to their capability to be fabricated into a film layer, particularly by a blown bubble extrusion technique. Films prepared of the LLDPE/E-NB melt blended resins of this invention are significantly improved with respect to certain of their film properties, such as tear strength, without detracting from the beneficial properties that a LLDPE otherwise provides to a film.Type: GrantFiled: March 31, 1997Date of Patent: August 29, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Palanisamy Arjunan, Wai Yan Chow, Bruce Allan Harrington, Yu Feng Wang, Henry Yang