FR2356677A1 - Procede de production sous pression elevee de polyethylene - Google Patents

Procede de production sous pression elevee de polyethylene

Info

Publication number
FR2356677A1
FR2356677A1 FR7719762A FR7719762A FR2356677A1 FR 2356677 A1 FR2356677 A1 FR 2356677A1 FR 7719762 A FR7719762 A FR 7719762A FR 7719762 A FR7719762 A FR 7719762A FR 2356677 A1 FR2356677 A1 FR 2356677A1
Authority
FR
France
Prior art keywords
reaction zone
zone
high pressure
ethylene
degrees
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7719762A
Other languages
English (en)
Other versions
FR2356677B1 (fr
Inventor
Setsuo Nakai
Shinichiro Kita
Fumihiko Hiki
Masayuki Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of FR2356677A1 publication Critical patent/FR2356677A1/fr
Application granted granted Critical
Publication of FR2356677B1 publication Critical patent/FR2356677B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/02—Ethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/04—Pressure vessels, e.g. autoclaves
    • B01J3/042—Pressure vessels, e.g. autoclaves in the form of a tube

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

L'invention concerne un procédé de production sous pression élevée de polyéthylène. Dans la zone de réaction supérieure 3 d'un réacteur autoclave 1, on polymérise de l'éthylène à une température de 130 degrés -200 degrés C et une pression de 1 000 à 1 800 kg/cm**2 en utilisant un agent d'amorçage, puis on poursuit la polymérisation à 220-280 degrés C en utilisant un agent d'amorçage dans la zone de réaction inférieure 4 du réacteur autoclave, avec les caractéristiques suivantes : 75 % ou plus de l'éthylène est introduit dans la zone de réaction supérieure par les conduites 7 et 8, et le rapport volumique de la zone de réaction supérieure à la zone de réaction inférieure est de 1,5 à 6, et le réacteur comprend au moins deux entrées d'alimentation pour l'éthylène 7, 8 et pour l'agent d'amorçage 9, 10 de façon à réguler la température de réaction dans cette zone supérieure (Figure '1). Obtention de polyéthylène basse densité ayant d'excellentes propriétés optiques et d'excellentes propriétés de mise en oeuvre.
FR7719762A 1976-06-29 1977-06-28 Procede de production sous pression elevee de polyethylene Granted FR2356677A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7730076A JPS532585A (en) 1976-06-29 1976-06-29 Preparation of polyethylene

Publications (2)

Publication Number Publication Date
FR2356677A1 true FR2356677A1 (fr) 1978-01-27
FR2356677B1 FR2356677B1 (fr) 1981-03-06

Family

ID=13630037

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7719762A Granted FR2356677A1 (fr) 1976-06-29 1977-06-28 Procede de production sous pression elevee de polyethylene

Country Status (11)

Country Link
US (1) US4085266A (fr)
JP (1) JPS532585A (fr)
BR (1) BR7704172A (fr)
CA (1) CA1065544A (fr)
DE (1) DE2729103A1 (fr)
FR (1) FR2356677A1 (fr)
GB (1) GB1538633A (fr)
HU (1) HU179321B (fr)
MX (1) MX4569E (fr)
NL (1) NL7707167A (fr)
SU (1) SU1075978A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017230A1 (fr) * 1979-04-05 1980-10-15 E.I. Du Pont De Nemours And Company Procédé continu de préparation de coplymères ordonnés d'éthylène et d'un acide carboxylique alpha, béta-insaturé ainsi que les ionomères préparés à partir de ces copolymères.

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5322582A (en) * 1976-08-13 1978-03-02 Sumitomo Chem Co Ltd Production of polyethylene
US4282339A (en) * 1978-10-02 1981-08-04 National Distillers And Chemical Corp. Dual reactor process and apparatus for polymerizing ethylene
US4607086A (en) * 1979-04-05 1986-08-19 E. I. Du Pont De Nemours And Company Continuous process for the manufacture of low-density polyethylene in stirred autoclaves
JPS5819284U (ja) * 1981-07-30 1983-02-05 リコーエレメックス株式会社 時計のカレンダ−機構
US4979987A (en) * 1988-07-19 1990-12-25 First Miss Gold, Inc. Precious metals recovery from refractory carbonate ores
NO178790C (no) * 1993-12-13 1996-06-05 Borealis Holding As Fremgangsmåte ved fremstilling av olefinpolymerer i en autoklavrektor
US5648438A (en) * 1994-04-01 1997-07-15 Exxon Chemical Patents, Inc. Process for producing polymers with multimodal molecular weight distributions
US6407191B1 (en) 1998-01-12 2002-06-18 The Dow Chemical Company Medium density ethylene polymers, a process to prepare these polymers and use of carbonyl group containing chain transfer agents in this process
EP0928797B3 (fr) 1998-01-12 2012-01-11 Dow Global Technologies LLC Polyéthylènes de densité moyenne, procédé pour préparer ces polymères et utilisation d'agents de chaîne de transfert contenant un groupement carbonyle dans ce procédé
JP2005097483A (ja) * 2003-09-26 2005-04-14 Sumitomo Chemical Co Ltd 高圧ラジカル重合法ポリエチレン
US7604783B2 (en) * 2004-12-22 2009-10-20 Placer Dome Technical Services Limited Reduction of lime consumption when treating refractor gold ores or concentrates
US8061888B2 (en) * 2006-03-17 2011-11-22 Barrick Gold Corporation Autoclave with underflow dividers
US8252254B2 (en) * 2006-06-15 2012-08-28 Barrick Gold Corporation Process for reduced alkali consumption in the recovery of silver
MY161915A (en) * 2008-07-10 2017-05-15 Borealis Ag Process for producing a polymer and a polymer for wire and cable applications
ES2568504T3 (es) * 2009-03-31 2016-04-29 Dow Global Technologies Llc Película hecha a partir de un interpolímero de etileno/alfa-olefina heterogéneo
ES2380568T3 (es) * 2009-11-10 2012-05-16 Basell Polyolefine Gmbh LDPE de alta presión, para aplicaciones médicas
US20110172354A1 (en) * 2010-01-04 2011-07-14 Dow Global Technologies Inc. Ethylene-based polymer compositions for use in fiber applications
US8653207B1 (en) * 2012-11-30 2014-02-18 Westlake Longview Corporation Process and apparatus for polymerizing ethylene under ultra-high pressure
EP3168237A1 (fr) * 2015-11-10 2017-05-17 Dow Global Technologies LLC Polymérisations à radicaux libres et pression élevée pour produire des polymères à base d'éthylène
EP3168239A1 (fr) * 2015-11-10 2017-05-17 Dow Global Technologies LLC Polymérisations de radicaux libres à haute pression
EP3168238A1 (fr) * 2015-11-10 2017-05-17 Dow Global Technologies LLC Polymères à base d'éthylène formés par polymérisations à radical libre
EP3260472A1 (fr) * 2016-06-24 2017-12-27 Dow Global Technologies LLC Polymères à base d'éthylène formés par polymérisations à radical libre
JP2022156612A (ja) * 2021-03-31 2022-10-14 住友化学株式会社 ポリエチレンの製造方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA676159A (en) * 1963-12-17 C. Hull David Ethylene resins
US2964515A (en) * 1957-07-01 1960-12-13 Nat Distillers Chem Corp Ethylene polymerization process
US3178404A (en) * 1959-12-23 1965-04-13 Eastman Kodak Co Preparation of polyethylene in a two zone reactor employing caprylyl peroxide in the first zone as the catalyst
US3756996A (en) * 1964-10-02 1973-09-04 Nat Distillers Chem Corp Process for the production of ethylene polymers
US3536693A (en) * 1968-01-31 1970-10-27 Eastman Kodak Co Process for preparing polyethylene having improved properties
GB1208120A (en) * 1968-02-01 1970-10-07 Ici Ltd Ethylene polymerisation
NL160292C (nl) * 1969-09-19 1979-10-15 Stamicarbon Werkwijze en reactor voor het continu polymeriseren van etheen.
DE2322554A1 (de) * 1973-05-04 1974-11-21 Sumitomo Chemical Co Verfahren und vorrichtung zur herstellung von aethylen-polymerisaten
US3923767A (en) * 1974-08-22 1975-12-02 Gulf Research Development Co Ethylene polymerization process in the presence of quinone alkides
US3963690A (en) * 1974-10-07 1976-06-15 The Dow Chemical Company Polymerization of ethylene in stirred autoclave with cooled inner wall
NO144570C (no) * 1974-12-16 1981-09-23 Standard Oil Co Kontinuerlig fremgangsmaate ved dampfasepolymerisering av en fordampbar polymer, samt apparat for utfoerelse av fremgangsmaaten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017230A1 (fr) * 1979-04-05 1980-10-15 E.I. Du Pont De Nemours And Company Procédé continu de préparation de coplymères ordonnés d'éthylène et d'un acide carboxylique alpha, béta-insaturé ainsi que les ionomères préparés à partir de ces copolymères.

Also Published As

Publication number Publication date
JPS5415904B2 (fr) 1979-06-18
SU1075978A3 (ru) 1984-02-23
GB1538633A (en) 1979-01-24
HU179321B (en) 1982-09-28
JPS532585A (en) 1978-01-11
CA1065544A (fr) 1979-10-30
US4085266A (en) 1978-04-18
DE2729103A1 (de) 1978-01-12
BR7704172A (pt) 1978-03-28
NL7707167A (nl) 1978-01-02
MX4569E (es) 1982-06-17
FR2356677B1 (fr) 1981-03-06

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