Patents by Inventor Harilaos Mavridis

Harilaos Mavridis 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: 11976183
    Abstract: A process for producing a low density polyethylene with modified melt flow index, comprising subjecting to thermal visbreaking a precursor polyethylene (I) comprising 35% by weight or more of LDPE.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: May 7, 2024
    Assignee: Basell Polyolefine GmbH
    Inventors: Timo Hees, Andreas Maus, Pascal Rebmann, Diana Doetsch, Katharina Elsas, Harilaos Mavridis, Gerhardus Meier
  • Patent number: 11976184
    Abstract: A process for producing a low density polyethylene with modified melt flow index, comprising subjecting to thermal visbreaking a precursor polyethylene (I) comprising 35% by weight or more of LDPE and blending the so obtained intermediate polyethylene product (II) with an additional polyethylene (III).
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: May 7, 2024
    Assignee: Basell Polyolefine GmbH
    Inventors: Andreas Maus, Timo Hees, Pascal Rebmann, Diana Doetsch, Katharina Elsas, Harilaos Mavridis, Gerhardus Meier
  • Publication number: 20240093009
    Abstract: A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features: 1) density from more than 0.955 to 0.965 g/cm3; 2) ratio MIF/MIE from 60 to 125; 3) MIF from 15 to 40 g/10 min.; 4) ER values from 3.0 to 5.5; 5) 110.02 equal to or lower than 150,000 Pa·s.
    Type: Application
    Filed: September 15, 2022
    Publication date: March 21, 2024
    Applicant: Basell Polyolefine GmbH
    Inventors: Ulf Schueller, Sebastian Wilhelm, Harald Schmitz, Andreas Maus, Bernd Lothar Marczinke, Elke Damm, Gerhardus Meier, Eric D. Day, Sameer D. Mehta, Harilaos Mavridis
  • Publication number: 20240093008
    Abstract: A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features: 1) density from 0.948 to 0.960 g/cm3; 2) ratio MIF/MIE greater than 125; 3) MIF from 20 to 40 g/10 min.; 4) ER values from 5 to 10.
    Type: Application
    Filed: September 15, 2022
    Publication date: March 21, 2024
    Applicant: Basell Polyolefine GmbH
    Inventors: Ulf Schueller, Sebastian Wilhelm, Harald Schmitz, Andreas Maus, Bernd Lothar Marczinke, Elke Damm, Gerhardus Meier, Eric D. Day, Sameer D. Mehta, Harilaos Mavridis
  • Publication number: 20240093010
    Abstract: A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features: 1) density from 0.948 to 0.955 g/cm3; 2) ratio MIF/MIE from 60 to 120; 3) MIF from 15 to 45 g/10 min.; 4) ER values from 2 to 5.0; said composition being obtainable by contacting a precursor polyethylene composition with a radical initiator.
    Type: Application
    Filed: September 15, 2022
    Publication date: March 21, 2024
    Applicant: Basell Polyolefine GmbH
    Inventors: Ulf Schueller, Sebastian Wilhelm, Harald Schmitz, Andreas Maus, Bernd Lothar Marczinke, Elke Damm, Gerhardus Meier, Eric D. Day, Sameer D. Mehta, Harilaos Mavridis
  • Publication number: 20240043666
    Abstract: Compositions comprising a blend of a first HDPE component having a relatively higher density and lower molecular weight and a second HDPE component, having a relatively lower higher density and higher molecular weight, are provided. The blends demonstrate improved ESCR performance relative to currently available HDPE products at a given density.
    Type: Application
    Filed: July 27, 2023
    Publication date: February 8, 2024
    Applicant: Equistar Chemicals, LP
    Inventors: Sameer D. Mehta, Harilaos Mavridis
  • Patent number: 11845854
    Abstract: A polyethylene composition for producing blown films, made from or containing an ethylene homopolymer or copolymer A) and an ethylene copolymer B) having a MIE value lower than the MIE value of A), the composition having the following features: 1) density from 0.948 to 0.960 g/cm3; 2) ratio MIF/MIP from 20 to 40; 3) MIF from 6 to less than 15 g/10 min.; 4) HMWcopo index from 0.5 to 3.5; 5) long-chain branching index, LCBI, equal to or lower than 0.82; 6) ?0.02 of equal to or less than 150000.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: December 19, 2023
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Ulf Schueller, Andreas Maus, Harilaos Mavridis
  • Publication number: 20230050126
    Abstract: Methods for processing polyolefin recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. polyolefin recyclate feedstocks can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed polyolefin recyclates. Processed polyolefin recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both polyolefin recyclate and/or pre-consumer polyolefins.
    Type: Application
    Filed: June 21, 2022
    Publication date: February 16, 2023
    Applicant: EQUISTAR CHEMICALS, LP
    Inventors: HARILAOS MAVRIDIS, MICK C. HUNDLEY, SAMEER D. MEHTA, MARCO CONSALVI, GERHARDUS MEIER, LINDSAY CORCORAN
  • Publication number: 20230023978
    Abstract: Methods for processing LDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LDPE recyclates. Processed LDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LDPE recyclate and/or pre-consumer polyolefins.
    Type: Application
    Filed: June 21, 2022
    Publication date: January 26, 2023
    Applicant: EQUISTAR CHEMICALS, LP
    Inventors: HARILAOS MAVRIDIS, MICK C. HUNDLEY, SAMEER D. MEHTA, MARCO CONSALVI, GERHARDUS MEIER, LINDSAY E. CORCORAN, ANDREAS MAUS, TIMO HEES, PASCAL REBMANN, DIANA DOETSCH, KATHARINA ELSAS
  • Publication number: 20220410458
    Abstract: Methods for processing HDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. HDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed HDPE recyclates. Processed HDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both HDPE recyclate and/or pre-consumer polyolefins.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 29, 2022
    Applicant: EQUISTAR CHEMICALS, LP
    Inventors: HARILAOS MAVRIDIS, MICK C. HUNDLEY, SAMEER D. MEHTA, MARCO CONSALVI, GERHARDUS MEIER, LINDSAY E. CORCORAN
  • Publication number: 20220402187
    Abstract: Methods for processing HDPE and/or MDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. HDPE and/or MDPE recyclate feedstocks can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed HDPE recyclate and/or processed MDPE recyclates. Processed HDPE recyclate and/or processed MDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both HDPE and/or MDPE recyclate and/or pre-consumer polyolefins.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 22, 2022
    Applicant: EQUISTAR CHEMICALS, LP
    Inventors: HARILAOS MAVRIDIS, MICK C. HUNDLEY, SAMEER D. MEHTA, MARCO CONSALVI, GERHARDUS MEIER, LINDSAY E. CORCORAN, ROCIO S. GARAY, TIMOTHY J. SKILLMAN, ERIC D. DAY
  • Publication number: 20220402188
    Abstract: Methods for processing LLDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LLDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LLDPE recyclates. Processed LLDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LLDPE recyclate and/or pre-consumer polyolefins.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 22, 2022
    Applicant: EQUISTAR CHEMICALS, LP
    Inventors: HARILAOS MAVRIDIS, MICK C. HUNDLEY, SAMEER D. MEHTA, MARCO CONSALVI, GERHARDUS MEIER, LINDSAY E. CORCORAN
  • Publication number: 20210284828
    Abstract: A polyethylene composition for producing blown films, made from or containing an ethylene homopolymer or copolymer A) and an ethylene copolymer B) having a MIE value lower than the MIE value of A), the composition having the following features: 1) density from 0.948 to 0.960 g/cm3; 2) ratio MIF/MIP from 20 to 40; 3) MIF from 6 to less than 15 g/10 min.; 4) HMWcopo index from 0.5 to 3.5; 5) long-chain branching index, LCBI, equal to or lower than 0.82; 6) ?0.02 of equal to or less than 150000.
    Type: Application
    Filed: September 4, 2019
    Publication date: September 16, 2021
    Inventors: Gerhardus MEIER, Ulf SCHUELLER, Andreas MAUS, Harilaos MAVRIDIS
  • Patent number: 10654956
    Abstract: The present disclosure generally relates to ethylene alpha-olefin copolymers and methods of making ethylene alpha-olefin copolymers. The ethylene alpha-olefin copolymers may have a density of about 0.915 g/mL to about 0.918 g/mL, a rheological polydispersity index greater than 0.8, a melt index of about 0.4 dg/10 min to about 2.0 dg/10 min, and/or a CEF T50 of 84° C. or less. The ethylene alpha-olefin copolymers may be made by combining an ethylene monomer and one or more alpha-olefin monomers in the presence of a catalyst, such as a Ziegler-Natta catalyst.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 19, 2020
    Assignee: Equistar Chemicals, LP
    Inventors: Harilaos Mavridis, Roberta Pica, Pietro Baita, Gabriele Mei, Massimo Covezzi
  • Patent number: 10619035
    Abstract: A polyethylene composition having the following features: 1) density from 0.945 to 0.958 g/cm3, determined according to ISO 1183 at 23° C.; 2) ratio MIF/MIP from 20 to 43; 3) MIF from 4.0 to less than 8.5 g/10 min.; 4) HMWcopo index from 3.5 to 20; and 5) long-chain branching index, LCBI, equal to or lower than 0.82. The polyethylene composition can be used to produce blown films.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: April 14, 2020
    Assignee: Basell Polyolefine GmbH
    Inventors: Iakovos Vittorias, Gerhardus Meier, Ulf Schüller, Andreas Maus, Jens Wiesecke, Harilaos Mavridis
  • Publication number: 20200071429
    Abstract: A solid catalyst component (i) made from or containing a titanium compound, a magnesium compound and an ether, is activated by using two different aluminum alkyl compounds (ii) and (iii) in sequence and under specific molar ratios relative to each other and to the ether of the solid catalyst component (i).
    Type: Application
    Filed: April 27, 2018
    Publication date: March 5, 2020
    Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
    Inventors: PIETRO BAITA, DARIO LIGUORI, HARILAOS MAVRIDIS, GIAMPIERO MORINI, ROBERTA PICA
  • Patent number: 10577490
    Abstract: A polyethylene composition having the following features: 1) density from about 0.945 to about 0.955 g/cm3, determined according to ISO 1183 at 23° C.; 2) ratio MIF/MIP from about 23 to about 40; 3) MIF from about 8.5 to about 18 g/10 min.; 4) HMWcopo index from about 3.5 to about 20; and 5) long-chain branching index, LCBI, equal to or greater than about 0.45. The polyethylene composition can be used to produce pipes and films.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: March 3, 2020
    Assignee: Basell Polyolefine GmbH
    Inventors: Iakovos Vittorias, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schüller, Andreas Maus, Harilaos Mavridis, Diana Dötsch
  • Patent number: 10501613
    Abstract: The present disclosure relates to pipes comprising bimodal high molecular weight high density polyethylene which has been extruded in the presence of one or more organic peroxides that are present in an amount ranging from 30 ppm to 200 ppm. The pipe has an improved long-term hydrostatic strength. Also provided are methods for preparing pipes having these characteristics.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: December 10, 2019
    Assignee: Equistar Chemicals, LP
    Inventors: Harilaos Mavridis, Chun D. Lee, Steven W. Horwatt, Sameer D. Mehta
  • Patent number: 10457800
    Abstract: A polyethylene composition having the following features: 1) density from about 0.945 to about 0.951 g/cm3, determined according to ISO 1183 at 23° C.; 2) ratio MIF/MIP from about 25 to about 43; 3) MIF from about 3.5 to less than about 8.5 g/10 min.; 4) HMWcopo index from about 1 to about 40; and 5) long-chain branching index, LCBI, equal to or greater than about 0.83. The polyethylene composition can be used to produce pipes.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: October 29, 2019
    Assignee: Basell Polyolefine GmbH
    Inventors: Iakovos Vittorias, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schüller, Andreas Maus, Diana Dötsch, Jens Wiesecke, Harilaos Mavridis
  • Patent number: 10259892
    Abstract: Polyethylene composition for injection molding with a beneficial balance of environmental stress cracking resistance and impact resistance in combination with low warpage and beneficial processing behavior, said composition having the following features: 1) density of 0.945 g/cm3 or higher; 2) MIE from 1 to 30 g/10 min.; 3) ratio MIF/MIE from 15 to 30; 4) ER values from 0.40 to 0.52.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: April 16, 2019
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Ulf Schüller, Harilaos Mavridis, Bernd Lothar Marczinke, Diana Dötsch, Jens Wiesecke