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AR128453A1 - Composiciones de polietileno de densidad media bimodal adecuadas para el uso como cintas de goteo de microirrigación - Google Patents

Composiciones de polietileno de densidad media bimodal adecuadas para el uso como cintas de goteo de microirrigación

Info

Publication number
AR128453A1
AR128453A1 ARP230100273A ARP230100273A AR128453A1 AR 128453 A1 AR128453 A1 AR 128453A1 AR P230100273 A ARP230100273 A AR P230100273A AR P230100273 A ARP230100273 A AR P230100273A AR 128453 A1 AR128453 A1 AR 128453A1
Authority
AR
Argentina
Prior art keywords
medium density
density polyethylene
bimodal medium
polyethylene compositions
bimodal
Prior art date
Application number
ARP230100273A
Other languages
English (en)
Inventor
Rujul M Mehta
Alex Stolarz
Rachel C Anderson
Chuan C He
Mridula Kapur
Original Assignee
Dow Global Technologies Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Global Technologies Llc filed Critical Dow Global Technologies Llc
Publication of AR128453A1 publication Critical patent/AR128453A1/es

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
    • C08L23/0815—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65916—Component covered by group C08F4/64 containing a transition metal-carbon bond supported on a carrier, e.g. silica, MgCl2, polymer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Se proporcionan composiciones de polietileno de densidad media bimodal, y cintas de goteo de microirrigación que las incluyen. Las composiciones de polietileno de densidad media bimodal pueden extrudirse a alta velocidad de líneas mientras mantienen otras propiedades deseables. Las composiciones de polietileno de densidad media bimodal incluyen un componente de polietileno de alto peso molecular (HMW) y un componente de polietileno de bajo peso molecular (LMW). La composición de polietileno de densidad media bimodal tiene una densidad de 0,937 a 0,946 g/cm³; un índice de fusión de carga alta (I₂₁) de 7 a 20 g/10 min; una intersección G’=G’’ de 30 a 50 kPa; un tiempo de falla de carga de tracción constante con muescas a un esfuerzo de fluencia de 30%, según se midió de acuerdo con ASTM ASTMD5397, de más de 700 horas; un módulo de endurecimiento por deformación de más de 65 MPa.
ARP230100273A 2022-02-11 2023-02-06 Composiciones de polietileno de densidad media bimodal adecuadas para el uso como cintas de goteo de microirrigación AR128453A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US202263267844P 2022-02-11 2022-02-11

Publications (1)

Publication Number Publication Date
AR128453A1 true AR128453A1 (es) 2024-05-08

Family

ID=85556637

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP230100273A AR128453A1 (es) 2022-02-11 2023-02-06 Composiciones de polietileno de densidad media bimodal adecuadas para el uso como cintas de goteo de microirrigación

Country Status (6)

Country Link
EP (1) EP4475663A1 (es)
CN (1) CN118695773A (es)
AR (1) AR128453A1 (es)
CL (1) CL2024002337A1 (es)
MX (1) MX2024009577A (es)
WO (1) WO2023154769A1 (es)

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003712A (en) 1970-07-29 1977-01-18 Union Carbide Corporation Fluidized bed reactor
US3709853A (en) 1971-04-29 1973-01-09 Union Carbide Corp Polymerization of ethylene using supported bis-(cyclopentadienyl)chromium(ii)catalysts
US4011382A (en) 1975-03-10 1977-03-08 Union Carbide Corporation Preparation of low and medium density ethylene polymer in fluid bed reactor
US4302566A (en) 1978-03-31 1981-11-24 Union Carbide Corporation Preparation of ethylene copolymers in fluid bed reactor
CA1168521A (en) 1982-02-01 1984-06-05 Clifford F. Thompson Leak detector
US4543399A (en) 1982-03-24 1985-09-24 Union Carbide Corporation Fluidized bed reaction systems
US4588790A (en) 1982-03-24 1986-05-13 Union Carbide Corporation Method for fluidized bed polymerization
US4988783A (en) 1983-03-29 1991-01-29 Union Carbide Chemicals And Plastics Company Inc. Ethylene polymerization using supported vanadium catalyst
FR2618786B1 (fr) 1987-07-31 1989-12-01 Bp Chimie Sa Procede de polymerisation d'olefines en phase gazeuse dans un reacteur a lit fluidise
US4994534A (en) 1989-09-28 1991-02-19 Union Carbide Chemicals And Plastics Company Inc. Process for producing sticky polymers
DE69309726T2 (de) 1992-01-23 1997-08-21 Mitsui Petrochemical Ind Ethylen/Alpha-Olefin/7-Methyl-1,6-Octadien Copolymerisat-Kautschuk und Zusammensetzungen desselben
US5352749A (en) 1992-03-19 1994-10-04 Exxon Chemical Patents, Inc. Process for polymerizing monomers in fluidized beds
US5462999A (en) 1993-04-26 1995-10-31 Exxon Chemical Patents Inc. Process for polymerizing monomers in fluidized beds
ZA943399B (en) 1993-05-20 1995-11-17 Bp Chem Int Ltd Polymerisation process
US5804678A (en) 1993-07-13 1998-09-08 Mitsui Petrochemical Industries, Ltd. Process for gas phase polymerization of olefin
EP0649992B1 (de) 1993-10-23 1997-07-30 WABCO GmbH Betätigungseinrichtung für eine Scheibenbremse
US5677375A (en) 1995-07-21 1997-10-14 Union Carbide Chemicals & Plastics Technology Corporation Process for producing an in situ polyethylene blend
US5665818A (en) 1996-03-05 1997-09-09 Union Carbide Chemicals & Plastics Technology Corporation High activity staged reactor process
US5627242A (en) 1996-03-28 1997-05-06 Union Carbide Chemicals & Plastics Technology Corporation Process for controlling gas phase fluidized bed polymerization reactor
US6489408B2 (en) 2000-11-30 2002-12-03 Univation Technologies, Llc Polymerization process
US6822051B2 (en) * 2002-03-29 2004-11-23 Media Plus, Inc. High density polyethylene melt blends for improved stress crack resistance in pipe
TW200504093A (en) 2003-05-12 2005-02-01 Dow Global Technologies Inc Polymer composition and process to manufacture high molecular weight-high density polyethylene and film therefrom
US7498282B2 (en) 2005-10-26 2009-03-03 Dow Global Technology Inc. Multi-layer, elastic articles
US20090304966A1 (en) 2008-06-05 2009-12-10 Mehta Sameer D Bimodal polyethylene process and products
EP3943514A1 (en) 2014-02-11 2022-01-26 Univation Technologies, LLC Catalyst composition
CN107531837B (zh) 2015-04-23 2021-10-15 尤尼威蒂恩技术有限责任公司 具有特定共聚单体分布的聚乙烯共聚物
BR112019005082B1 (pt) 2016-09-30 2022-12-20 Univation Technologies, Llc Sistema de catalisador de polimerização bimodal e método para produzir um polietileno bimodal
AR114620A1 (es) * 2017-12-15 2020-09-30 Dow Global Technologies Llc Formulación que contiene una composición de polietileno de alta densidad y cinta de goteo para microirrigación que la contiene

Also Published As

Publication number Publication date
WO2023154769A1 (en) 2023-08-17
CN118695773A (zh) 2024-09-24
EP4475663A1 (en) 2024-12-18
CL2024002337A1 (es) 2024-12-20
MX2024009577A (es) 2024-08-13

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