Patents by Inventor Rongjuan Cong
Rongjuan Cong 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).
-
Patent number: 11988650Abstract: A method to determine the weight percent of an “amorphous” fraction in an olefin-based polymer composition, comprising one or more olefin-based polymers; said method comprising the following steps: a) dissolving the olefin-based polymer composition in an organic solvent to form a polymer solution; b) injecting at least a portion of the polymer solution onto a support material, and wherein the support material has a Co-crystallization Index (CI) value from 0.70 to 1.20; c) cooling the support material at a rate greater than, or equal to, 0.2 C/min; d) increasing the temperature of the support material to elute the polymers of the olefin-based polymer composition; e) generating a chromatogram; f) determining the peak area of the first elution from its lower integration limit to its upper integration limit; g) calculating the “amorphous” fraction” based on the following Equation A below: wt % “amorphous” fraction=PAamorphous/PAtotal×100 (Eqn.Type: GrantFiled: June 25, 2019Date of Patent: May 21, 2024Assignee: Dow Global Technologies LLCInventors: Rongjuan Cong, Kimberly L. Bailey, Vickie Ricca
-
Publication number: 20240010771Abstract: Processes of polymerizing olefin monomers. The process includes reacting ethylene and optionally one or more olefin monomers in the presence of a catalyst system, wherein the catalyst system comprises: modified-hydrocarbyl methylaluminoxane having less than 50 mole percent AlRA1RB1RC1 based on the total moles of aluminum, where RA1, RB1, and RC1 are independently is linear (C1-C40)alkyl, branched (C1-C40)alkyl, or (C6-C40)aryl; and one or more metal-ligand complexes according to formula (I).Type: ApplicationFiled: February 5, 2021Publication date: January 11, 2024Applicant: Dow Global Technologies LLCInventors: Philip P. Fontaine, David M. Pearson, Hien Q. Do, Johnathan E. Delorbe, Rafael Huacuja, Rhett A. Baillie, Rongjuan Cong
-
Patent number: 11857948Abstract: A packing material for chromatography, the packing material comprising coated particles, wherein the coated particles comprise non-porous particles and a portion of the surface area of the non-porous particles is coated with a coating composition comprising graphene and/or graphene oxide.Type: GrantFiled: November 2, 2018Date of Patent: January 2, 2024Assignee: Dow Global Technologies LLCInventors: Rongjuan Cong, Albert Parrott, Charles Michael Cheatham, Janet Goss
-
Publication number: 20220389139Abstract: A composition comprising an ethylene/alpha-olefin interpolymer that comprises the following properties: a) a total unsaturation/1000C?0.30; b) a molecular weight distribution (MWD)?3.0; c) a TGIC broadness parameter B1/4?8.0. A solution N polymerization process to prepare an ethylene/alpha-olefin/interpolymer, said process comprising polymerizing, in one reactor, at a reactor temperature ?150° C., a reaction mixture comprising ethylene, an alpha-olefin, a solvent, and a metal complex as described herein. A method to determine the TGIC broadness parameter B1/x of a polymer composition comprising one or more olefin-based polymers.Type: ApplicationFiled: December 17, 2020Publication date: December 8, 2022Inventors: Gaoxiang Wu, Brian M. Habersberger, Johnathan E. DeLorbe, Thomas Wesley Karjala, Jr., Yabin Sun, Rongjuan Cong
-
Patent number: 11273592Abstract: The present invention discloses a process for forming a biaxially oriented film. The process includes first selecting a polyolefin resin wherein said polyolefin resin comprises a linear low density polyethylene resin characterized by having from 9 to 35 weight percent of the total weight of linear low density polyethylene resin eluting from a CEF at a temperature greater than 97.0° C.; and further characterized by having a CDR of from 33 to 80 and a Mw Ratio of from 0.15 to 0.45. Next a film is formed from the polyolefin resin selected in the first step. Finally the film formed in the second step is oriented in a sequential manner. The films produced by this process are characterized by having an ultimate elongation at least 1.5 times greater in the MD as compared to the CD and the 2% secant modulus is a least 1.25 times greater in the CD as compared to the MD.Type: GrantFiled: June 10, 2019Date of Patent: March 15, 2022Assignee: Dow Global Technologies LLCInventors: Xiao Bing Yun, Rongjuan Cong, Jianping Pan, Teresa P. Karjala
-
Patent number: 11261544Abstract: An ethylene/alpha-olefin interpolymer suitable for use in fibers and nonwovens having a density of from 0.911 to 0.939 g/cc, a Brookfield viscosity of less than or equal to 50,000 cP, and a molecular weight distribution (Mw,cc/Mn,cc) of 1.8 to 3.5, and articles thereof.Type: GrantFiled: March 7, 2018Date of Patent: March 1, 2022Assignee: Dow Global Technologies LLCInventors: Viraj Shah, Yijian Lin, Ronald Wevers, Rongjuan Cong, Mehmet Demirors
-
Patent number: 11248075Abstract: The invention provides compositions, each comprising an ethylene/alpha-olefin interpolymer, which has a reduced level of a low density, low molecular weight oligomeric fraction, as indicated by an HCC value, as described herein, and reduced levels of inorganic content or lower Tm. The invention also provides processes for forming such interpolymers.Type: GrantFiled: October 16, 2019Date of Patent: February 15, 2022Assignee: Dow Global Technologies LLCInventors: Frank J. Cerk, Rongjuan Cong, Shrikant Dhodapkar, Selim Yalvac, Morgan M. Hughes, Timothy W. Gambrel, Yi Jin
-
Patent number: 11161969Abstract: Embodiments of the present disclosure are directed ethylene/alpha-olefin interpolymer compositions including a polyethylene and an alpha-olefin comonomer, where the polyethylene is from 70 wt % to 100 wt % of the interpolymer composition based on a total weight of the interpolymer composition and the interpolymer composition is characterized by a Comonomer Distribution Constant (CDC) in a range of from 100 to 500, a vinyl unsaturation of less than 0.15 vinyls per one thousand total carbon atoms present in the interpolymer composition, a zero shear viscosity ratio (ZSVR) in a range from 1.5 to 5, a density in a range of from 0.903 to 0.950 g/cm3, a melt index (I2) in a range of from 0.1 to 15 g/10 minutes, a molecular weight distribution (Mw/Mn) in a range of from 1.8 to 4.5, and a separation index of from 0.50 to 1.10.Type: GrantFiled: December 6, 2017Date of Patent: November 2, 2021Assignee: Dow Global Technologies LLCInventors: Mehmet Demirors, Brayden E. Glad, Rongjuan Cong
-
Publication number: 20210246291Abstract: The present application relates to a composition comprising the following components: A) at least one ethylene/alpha-olefin interpolymer; B) a peroxide; C) at least one filler selected from one or more carbon black samples, MgO, or a combination thereof; and optionally, at least one filler selected from silica, ZnO, CaCO3, A1 (OH)3, Mg (OH)2, or a combination thereof; D) a calculated P content from 0.010 wt % to 0.300 wt %, based on the weight of the composition, and wherein the calculated P content is the calculated content the phosphorus element present in one or more phosphate compounds selected from Structure 1 below: O?P (OR1) (OR2) (OR3) (Structure 1), wherein R1, R2 and R3 are each, independently, selected from i) a non-aromatic hydrocarbon or ii) a non-aromatic hydrocarbon comprising at least one heteroatom, excluding P.Type: ApplicationFiled: April 27, 2018Publication date: August 12, 2021Inventors: Bo Lyu, Yong Chen, Rongjuan Cong, Yabin Sun, Tao Han, Bharat I. Chaudhary
-
Publication number: 20210132011Abstract: A method to determine the weight percent of an “amorphous” fraction in an olefin-based polymer composition, comprising one or more olefin-based polymers; said method comprising the following steps: a) dissolving the olefin-based polymer composition in an organic solvent to form a polymer solution; b) injecting at least a portion of the polymer solution onto a support material, and wherein the support material has a Co-crystallization Index (CI) value from 0.70 to 1.20; c) cooling the support material at a rate greater than, or equal to, 0.2C/min; d) increasing the temperature of the support material to elute the polymers of the olefin-based polymer composition; e) generating a chromatogram; f) determining the peak area of the first elution from its lower integration limit to its upper integration limit; g) calculating the “amorphous” fraction” based on the following Equation A below: wt % “amorphous” fraction=PAamorphous/PAtotal×100 (Eqn.Type: ApplicationFiled: June 25, 2019Publication date: May 6, 2021Inventors: Rongjuan Cong, Kimberly L. Bailey, Vickie Ricca
-
Patent number: 10792899Abstract: Embodiments of the present invention relate to biaxially oriented, multilayer polyethylene films and to laminates and articles formed therefrom. In one aspect, a biaxially oriented, multilayer polyethylene film comprises Layer A which is a sealant layer p having a top facial surface and a bottom facial surface and comprising a first polyethylene, wherein the first polyethylene has a density of at least 0.900 g/cm3, an IHDF>95 of 20-60 kg/mol, and a MWHDF>95 of greater than 130 kg/mol, wherein Layer A comprises at least 50 weight percent of the first polyethylene based on the weight of Layer A, and Layer B having a top facial surface and a bottom facial surface, wherein Layer B comprises one or more additional polyethylenes, and wherein the top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A, wherein the density of the first polyethylene is at least 0.002 g/cm3 less than the density of Layer B.Type: GrantFiled: August 14, 2017Date of Patent: October 6, 2020Assignee: Dow Global Technologies LLCInventors: Jianping Pan, Xiao Bing Yun, Yijian Lin, Rongjuan Cong
-
Publication number: 20200282378Abstract: A packing material for chromatography, the packing material comprising coated particles, wherein the coated particles comprise non-porous particles and a portion of the surface area of the non-porous particles is coated with a coating composition comprising graphene and/or graphene oxide.Type: ApplicationFiled: November 2, 2018Publication date: September 10, 2020Applicant: Dow Global Technologies LLCInventors: Rongjuan Cong, Albert Parrott, Charles Michael Cheatham, Janet Goss
-
Patent number: 10761072Abstract: A temperature gradient chromatography, and apparatus for the same, said method comprising the following: a) dissolving a composition comprising at least one polymer in at least one solvent, to form a polymer solution; b) injecting at least a portion of the polymer solution onto a support material and wherein the support material has a CI from 0.70 to 1.50; c) cooling the support material at a rate greater than, or equal to, 0.2° C./min; d) increasing the temperature of the support material to elute at least some of the polymer; e) generating the chromatogram.Type: GrantFiled: August 24, 2016Date of Patent: September 1, 2020Assignee: DOW Global Technologies LLCInventors: Rongjuan Cong, Albert Parrott, Cherry Hollis, Charles Michael Cheatham
-
Publication number: 20200048385Abstract: The invention provides compositions, each comprising an ethylene/alpha-olefin interpolymer, which has a reduced level of a low density, low molecular weight oligomeric fraction, as indicated by an HCC value, as described herein, and reduced levels of inorganic content or lower Tm. The invention also provides processes for forming such interpolymers.Type: ApplicationFiled: October 16, 2019Publication date: February 13, 2020Inventors: Frank J. Cerk, Rongjuan Cong, Shrikant Dhodapkar, Selim Yalvac, Morgan M. Hughes, Timothy W. Gambrel, Yi Jin
-
Publication number: 20200002849Abstract: An ethylene/alpha-olefin interpolymer suitable for use in fibers and nonwovens having a density of from 0.911 to 0.939 g/cc, a Brookfield viscosity of less than or equal to 50,000 cP, and a molecular weight distribution (Mw,cc/Mn,cc) of 1.8 to 3.5, and articles thereof.Type: ApplicationFiled: March 7, 2018Publication date: January 2, 2020Inventors: Viraj Shah, Yijian Lin, Ronald Wevers, Rongjuan Cong, Mehmet Demirors
-
Patent number: 10495616Abstract: A method increase of the Resolution Index (RI) of a chromatogram generated from a polymer sample comprising at least two olefin-based polymers of different microstructures and/or at least two olefin-based polymer fractions of different microstructures. The method comprises separating the mixture on a low-porosity stationary phase and repeatedly cycling the sample-stationary phase through a series of cooling and heating stages with active eluent flow only during the cooling stages and during the last heating stage to elute the separated analytes off the column.Type: GrantFiled: August 30, 2016Date of Patent: December 3, 2019Assignee: Dow Global Technologies LLCInventors: Rongjuan Cong, Albert Parrott, Cherry Hollis
-
Publication number: 20190359807Abstract: Embodiments of the present disclosure are directed ethylene/alpha-olefin interpolymer compositions including a polyethylene and an alpha-olefin comonomer, where the polyethylene is from 70 wt % to 100 wt % of the interpolymer composition based on a total weight of the interpolymer composition and the interpolymer composition is characterized by a Comonomer Distribution Constant (CDC) in a range of from 100 to 500, a vinyl unsaturation of less than 0.15 vinyls per one thousand total carbon atoms present in the interpolymer composition, a zero shear viscosity ratio (ZSVR) in a range from 1.5 to 5, a density in a range of from 0.903 to 0.950 g/cm3, a melt index (I2) in a range of from 0.1 to 15 g/10 minutes, a molecular weight distribution (Mw/Mn) in a range of from 1.8 to 4.5, and a separation index of from 0.50 to 1.10.Type: ApplicationFiled: December 6, 2017Publication date: November 28, 2019Applicant: Dow Global Technologies LLCInventors: Mehmet Demirors, Brayden E. Glad, Rongjuan Cong
-
Patent number: 10450393Abstract: The invention provides compositions, each comprising an ethylene/alpha-olefin interpolymer, which has a reduced level of a low density, low molecular weight oligomeric fraction, as indicated by an HCC value, as described herein, and reduced levels of inorganic content or lower Tm. The invention also provides processes for forming such interpolymers.Type: GrantFiled: May 7, 2019Date of Patent: October 22, 2019Assignee: Dow Global Technologies LLCInventors: Frank J. Cerk, Rongjuan Cong, Shrikant Dhodapkar, Selim Yalvac, Morgan M. Hughes, Timothy W. Gambrel, Yi Jin
-
Publication number: 20190299517Abstract: The present invention discloses a process for forming a biaxially oriented film. The process includes first selecting a polyolefin resin wherein said polyolefin resin comprises a linear low density polyethylene resin characterized by having from 9 to 35 weight percent of the total weight of linear low density polyethylene resin eluting from a CEF at a temperature greater than 97.0° C.; and further characterized by having a CDR of from 33 to 80 and a Mw Ratio of from 0.15 to 0.45. Next a film is formed from the polyolefin resin selected in the first step. Finally the film formed in the second step is oriented in a sequential manner. The films produced by this process are characterized by having an ultimate elongation at least 1.5 times greater in the MD as compared to the CD and the 2% secant modulus is a least 1.25 times greater in the CD as compared to the MD.Type: ApplicationFiled: June 10, 2019Publication date: October 3, 2019Inventors: Xiao Bing Yun, Rongjuan Cong, Jianping Pan, Teresa P. Karjala
-
Publication number: 20190263950Abstract: The invention provides compositions, each comprising an ethylene/alpha-olefin interpolymer, which has a reduced level of a low density, low molecular weight oligomeric fraction, as indicated by an HCC value, as described herein, and reduced levels of inorganic content or lower Tm. The invention also provides processes for forming such interpolymers.Type: ApplicationFiled: May 7, 2019Publication date: August 29, 2019Inventors: Frank J. Cerk, Rongjuan Cong, Shrikant Dhodapkar, Selim Yalvac, Morgan M. Hughes, Timothy W. Gambrel, Yi Jin