230 patents
Page 3 of 12
Utility
Polyethylene Composition for Filaments or Fibers
9 Mar 23
GIANNI PERDOMI, MONICA GALVAN
Filed: 2 Dec 20
Utility
Catalyst Components for the Polymerization of Olefins
26 Jan 23
A solid catalyst component for the homopolymerization or copolymerization of olefins, made from or containing Ti, Mg, halogen, and at least one non-aromatic diazo compounds.
SIMONA GUIDOTTI, DARIO LIGUORI, GIAMPIERO MORINI
Filed: 30 Nov 20
Utility
Apparatus and Process for the Gas-phase Polymerization
19 Jan 23
An apparatus for carrying out a gas-phase olefin polymerization having a first polymerization zone having a cylindrical segment of diameter D01, a second polymerization zone having a cylindrical upper part of diameter D05 and a cylindrical lower part of diameter D06, a separation zone of diameter D04, a first connecting element of diameter D03, which is a bend of radius R03 or has a bend part of radius R03, a gas recycle line of diameter D08, a transition segment of diameter D02, and a second connecting element of a diameter D09, which is a bend or has a bend part, wherein the ratio D04 to D05 is 1.0 to 1.5, the ratio D05 to D06 is 1.2 to 2, the ratio R03 to D03 is 1 to 6, the ratio D03 to D01 is 0.3 to 0.85, and the ratio D08 to D02 is 1.0 to 2.2.
Giulia Mei, Giuseppe Penzo, Riccardo Rinaldi, Emanuele Azzarello, Rosario Pesare
Filed: 9 Dec 20
Utility
Cooling of Reaction Mixture Obtained by High-pressure Polymerization Process of Ethylenically Unsaturated Monomers
19 Jan 23
A process for preparing ethylene polymers including the step of polymerizing ethylene or copolymerizing ethylene and one or more comonomers at a temperature from 100° C. to 350° C. and a pressure of from 110 MPa to 350 MPa in a continuously operated tubular polymerization reactor, thereby yielding a reaction mixture, wherein the tubular polymerization reactor has a reactor cooling jacket for removing the heat of the reaction and a pressure control valve, the reaction mixture leaves the reactor through the pressure control valve, the reaction mixture then passes a post-reactor cooler equipped with a post-reactor cooling jacket, the reactor cooling jacket is provided with a reactor coolant having an inlet temperature and the post-reactor cooling jacket is provided with a post-reactor coolant having an inlet temperature, and the inlet temperature of the post-reactor coolant is independently controlled from the inlet temperature of the reactant coolant.
Andre-Armand Finette, Juergen Mohrbutter, Christoph Wolf, Michael Deuerling, Danir Khayrullin, Dieter Littmann
Filed: 1 Dec 20
Utility
Pre-treament of Polyolefin Waste to Improve Depolymerization
12 Jan 23
Pre-treatment methods for polyolefin-based feed streams before depolymerization are described.
Sandor Nagy, Diego Brita, Christopher D. Smith, David A. Heaps, Daniel F. White, David L. Ramage
Filed: 8 Jul 22
Utility
Pellet drying and degassing method
10 Jan 23
Method for the preparation of dried polymer pellets in a facility having a dryer with a first chamber and a mechanical agitator, and the facility further having a degassing silo with a second chamber, the method includes the steps of guiding a drying gas flow made from or containing a first gas mixture for drying wet polymer pellets into the first chamber, transferring the dried polymer pellets into the second chamber, guiding a second gas mixture for degassing the dried polymer pellets into the second chamber thereby transforming the second gas mixture into a third gas mixture and guiding a portion of the third gas mixture into the first chamber; and process for manufacturing LDPE pellets.
Giulia Mei, Juergen Mohrbutter, Dieter Littmann, Christoph Wolf, Andre-Armand Finette, Michael Deuerling, Giuseppe Penzo
Filed: 21 Jun 18
Utility
Apparatus and Process for the Gas-phase Polymerization
5 Jan 23
Apparatus for carrying out a catalytic gas-phase olefin polymerization having a first polymerization zone for growing polymer particles to flow upward under fast fluidization or transport conditions, a second polymerization zone for the growing polymer particles to flow downward, and a gas/solid separation zone; wherein the second polymerization zone has an upper part being connected to the separation zone and a lower part being connected to the upper part; wherein the ratio of the height H01 of the separation zone to the diameter D01 of the separation zone is 2.5 to 4.5.
Giuseppe Penzo, Maurizio Dorini, Riccardo Rinaldi, Silvia Soffritti, Giulia Mei
Filed: 9 Dec 20
Utility
Catalyst for the Polymerization of Olefins
5 Jan 23
A catalyst for the polymerization of olefins made from or containing (a) a solid catalyst component containing Mg, Ti and optionally an internal electron donor compound (ID), (b) an aluminum alky compound, and (c) an external electron donor (ED) selected from non-aromatic diazo compounds.
SIMONA GUIDOTTI, DARIO LIGUORI, GIAMPIERO MORINI
Filed: 28 Nov 20
Utility
Polyethylene Composition for Filaments or Fibers
5 Jan 23
MONICA GALVAN, GIANNI PERDOMI
Filed: 2 Dec 20
Utility
High-pressure Polymerization System and High-pressure Polymerization Process for the Polymerization of Ethylenically Unsaturated Monomers
29 Dec 22
A high-pressure polymerization system having a) a polymerization reactor and b) a reactor blow down system having b1) a reactor blow down vessel, having a circular design over a major portion P having a L/D-ratio in the range from 1.75 to 10.0 and containing an aqueous quenching medium, b2) a release line connecting the polymerization reactor with the reactor blow down vessel and having an outlet located above a maximum level for the aqueous quenching medium, b3) a first emergency valve in the release line to open and close fluid communication between the polymerization reactor and the reactor blow down system, and wherein the release line outlet has a joining piece having an angle (a) between the central axis and a tangent at the reactor blow down vessel in the range from 5° to 70° and the reactor blow down vessel has a vent stack containing a constricted section.
Christoph Wolf, Juergen Mohrbutter, Andre-Armand Finette, Michael Deuerling, Danir Khayrullin, Dieter Littmann
Filed: 1 Dec 20
Utility
Propylene Based Filament for 3D Printer
22 Dec 22
A consumable filament and process for using the consumable filament in an extrusion-based additive manufacturing system made from or containing a heterophasic polypropylene composition having a xylene soluble content ranging from 15 wt % to 50 wt %, a melt flow rate MFR L ranging from 0.5 to 100 g/10 min, an intrinsic viscosity of the fraction soluble in xylene at 25° C. ranging from 1.5 to 6.0 dl/g, and an ethylene content ranging from 10 wt % to 50 wt %.
Dieter Langenfelder, Jürgen Rohrmann, Karsten Schmitz, Carl Schirmeister, Yannic Kessler, Erik Licht, Christoph Callsen, Volker Altstädt
Filed: 28 Sep 20
Utility
Process for the Preparation of a Catalyst Component and Components Therefrom Obtained
22 Dec 22
A process for preparing a catalyst component made from or containing Mg, Ti, and at least an electron donor compound (ID), including the steps of: (a) reacting a Mg based compound with a Ti compound, having at least a Ti—Cl bond, in an amount such that the Ti/Mg molar ratio is greater than 3 and at a temperature ranging from 0 to 150° C., thereby yielding an intermediate solid catalyst component containing Mg and Ti; and (b) contacting the intermediate solid catalyst component with a gaseous stream containing the electron donor compound (ID) in a gaseous dispersing medium, thereby yielding a final solid catalyst component having an ID/Ti molar ratio ranging from 0.5:1 to 20:1.
DIEGO BRITA, GIANNI COLLINA, DANIELE EVANGELISTI, BENEDETTA GADDI, PIERO GESSI, GIAMPIERO MORINI, SILVIA SOFFRITTI, PAOLO VINCENZI
Filed: 5 Nov 20
Utility
Process and System for Collecting Catalyst or Polymer Samples from an Operation Unit of a Polymerization Plant
22 Dec 22
PAOLO CAPISANI, NICOLO ARICH DE FINETTI, PIETRO BAITA
Filed: 9 Nov 20
Utility
Continuous Solution Polymerization Process
15 Dec 22
NICOLO ARICH DE FINETTI, PIETRO BAITA, ANTONIO MAZZUCCO, ROBERTA PICA
Filed: 3 Nov 20
Utility
Multi-reactor slurry polymerization process
13 Dec 22
A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.
Peter Rohrbach, Juergen Perzlmeier
Filed: 2 Jan 18
Utility
Supported catalyst system
6 Dec 22
A nano platelet gibbsite treated with compound of formula (ORa)3Si—Rb or of formula Rc—COOH wherein Ra equal to or different from each other is a C1-C10 alkyl radical; Rb is a C5-C30 hydrocarbon radical and Rc is a C5-C30 hydrocarbon radical is used as a catalyst support.
Shahram Mihan, Heike Gregorius, Volker Fraaije, Rolf Mulhaupt, Fan Zhong
Filed: 5 Oct 18
Utility
Polyolefin Compositions with High Dimensional Stability for Sheet Applications
1 Dec 22
A polyolefin composition useful for making sheet membranes, as well as other articles of manufacture are described.
RYAN KRAMB, BRYAN S. SCHLEY, FABIO CECCARANI
Filed: 20 May 22
Utility
Polypropylene Composition And Molded Article
24 Nov 22
Yutaka Yokoyama, Akihiro Kamimura, Hiroshi Kajioka
Filed: 22 Oct 20
Utility
Polymerization process including discharging polyolefin particles from a gas-phase polymerization reactor
22 Nov 22
A process for preparing an olefin polymer, including the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C3-C5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas made from or containing a C3-C5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.
Gabriele Mei, Giulia Mei, Giuseppe Penzo
Filed: 2 Aug 18
Utility
Polymer Composition for Improved Grade Plastics from Recycled Material
17 Nov 22
Franciscus Elisabeth Jacobus ESSERS, Martinus Hendrikus Maria VAN ENCKEVORT, Marc Peter August HOUTERMANS, Johannes VENERIUS
Filed: 28 Jul 22