ES380918A1 - Procedimiento para la polimerizacion de etileno. - Google Patents

Procedimiento para la polimerizacion de etileno.

Info

Publication number
ES380918A1
ES380918A1 ES380918A ES380918A ES380918A1 ES 380918 A1 ES380918 A1 ES 380918A1 ES 380918 A ES380918 A ES 380918A ES 380918 A ES380918 A ES 380918A ES 380918 A1 ES380918 A1 ES 380918A1
Authority
ES
Spain
Prior art keywords
compound
anhydrous
electron
contacting
product obtained
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.)
Expired
Application number
ES380918A
Other languages
English (en)
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Edison SpA
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 Montedison SpA, Montecatini Edison SpA filed Critical Montedison SpA
Publication of ES380918A1 publication Critical patent/ES380918A1/es
Expired 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
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • 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
    • C08F4/02—Carriers therefor
    • C08F4/022—Magnesium halide as support anhydrous or hydrated or complexed by means of a Lewis base for Ziegler-type catalysts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S526/906—Comminution of transition metal containing catalyst

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Catalysts (AREA)
ES380918A 1969-06-20 1970-06-19 Procedimiento para la polimerizacion de etileno. Expired ES380918A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1846269 1969-06-20
IT1882369 1969-06-27

Publications (1)

Publication Number Publication Date
ES380918A1 true ES380918A1 (es) 1973-04-01

Family

ID=26326998

Family Applications (1)

Application Number Title Priority Date Filing Date
ES380918A Expired ES380918A1 (es) 1969-06-20 1970-06-19 Procedimiento para la polimerizacion de etileno.

Country Status (17)

Country Link
US (2) US4544717A (es)
JP (1) JPS5819334B1 (es)
AT (1) AT302648B (es)
BE (1) BE752252A (es)
CS (1) CS153084B2 (es)
DE (1) DE2029992C3 (es)
DK (1) DK130744B (es)
ES (1) ES380918A1 (es)
FR (1) FR2052706A5 (es)
GB (1) GB1310547A (es)
IL (1) IL34739A (es)
NL (1) NL162664B (es)
PL (1) PL80715B1 (es)
RO (1) RO62731A (es)
SE (1) SE417611B (es)
SU (1) SU414770A3 (es)
YU (1) YU36189B (es)

Families Citing this family (103)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL162664B (nl) * 1969-06-20 1980-01-15 Montedison Spa Werkwijze om een katalysator te bereiden voor de poly- merisatie van alkenen-1.
NL7113778A (es) * 1970-10-13 1972-04-17
NL7114641A (es) * 1970-10-29 1972-05-03
CH543546A (fr) 1971-03-23 1973-10-31 Solvay Système catalytique de polymérisation des alpha-oléfines
NL160286C (es) * 1971-06-25
US4107414A (en) 1971-06-25 1978-08-15 Montecatini Edison S.P.A. Process for the stereoregular polymerization of alpha olefins
US4156063A (en) 1971-06-25 1979-05-22 Montecanti Edison, S.p.A. Process for the stereoregular polymerization of alpha olefins
US4187196A (en) 1971-06-25 1980-02-05 Montedison S.P.A. Process for the stereoregular polymerization of alpha-olefins
IT967867B (it) * 1972-09-26 1974-03-11 Montedison Spa Procedimento per la polimerizzazio ne stereospecifica delle alfa ole fine
IT1005486B (it) 1974-02-15 1976-08-20 Montedison Spa Gomme termoplastiche e processo per la loro preparazione
NL177314C (nl) * 1974-04-08 1985-09-02 Mitsubishi Chem Ind Werkwijze voor het bereiden van een katalysatorcomplex, en werkwijze voor het polymeriseren van een alkeen met deze katalysator.
US4174429A (en) * 1975-03-28 1979-11-13 Montedison S.P.A. Process for polymerizing olefins
IT1054410B (it) * 1975-11-21 1981-11-10 Mitsui Petrochemical Ind Catalizzatori per la polimerizzazione delle alfa olefine
JPS5952643B2 (ja) * 1977-01-27 1984-12-20 三井化学株式会社 エチレン共重合体
CA1125733A (en) * 1978-03-27 1982-06-15 Arthur W. Langer, Jr. T.sub.nmr' in3-n xx cocatalysts
CA1142161A (en) * 1978-03-29 1983-03-01 Exxon Research And Engineering Company Trialkyl aluminum cocatalyst
CA1144300A (en) * 1978-11-20 1983-04-05 Allen Noshay Preparation of low density ethylene copolymers in fluid bed reactor
US4243552A (en) * 1978-12-11 1981-01-06 Phillips Petroleum Company Polymerization catalyst and process
JPS5923561B2 (ja) * 1979-02-06 1984-06-02 三井化学株式会社 オレフインの重合方法
US4224182A (en) * 1979-03-07 1980-09-23 Exxon Research & Engineering Co. Novel hindered alkyl aluminum amide cocatalysts
US4308369A (en) * 1979-09-28 1981-12-29 The Dow Chemical Company High efficiency catalyst for polymerizing olefins
US4482687A (en) * 1979-10-26 1984-11-13 Union Carbide Corporation Preparation of low-density ethylene copolymers in fluid bed reactor
US6777508B1 (en) 1980-08-13 2004-08-17 Basell Poliolefine Italia S.P.A. Catalysts for the polymerization of olefins
IT1209255B (it) 1980-08-13 1989-07-16 Montedison Spa Catalizzatori per la polimerizzazione di olefine.
JPS58125706A (ja) * 1982-01-22 1983-07-26 Mitsubishi Petrochem Co Ltd エチレンの重合法
US5064795A (en) * 1982-08-27 1991-11-12 Phillips Petroleum Company Polymerization of olefins
JPS58189189A (ja) * 1982-09-20 1983-11-04 Mitsubishi Chem Ind Ltd 塩化マグネシウム・テトラビドロフラン錯体のテトラヒドロフラン溶液の製造方法
US4988656A (en) * 1984-03-23 1991-01-29 Amoco Corporation Olefin polymerization catalyst
US4866022A (en) * 1984-03-23 1989-09-12 Amoco Corporation Olefin polymerization catalyst
FI75842C (fi) * 1986-04-01 1988-08-08 Neste Oy Katalytkomponenter foer polymeringskatalyter av alfaolefiner och foerfarande foer deras framstaellning.
FI75844C (fi) * 1986-04-01 1988-08-08 Neste Oy Katalytkomponenter foer polymeringskatalyter av alfaolefiner och foerfarande foer deras framstaellning.
FI75843C (fi) * 1986-04-01 1988-08-08 Neste Oy Katalytkomponenter foer polymeringskatalyter av alfaolefiner och foerfarande foer deras framstaellning.
FI75845C (fi) * 1986-04-01 1988-08-08 Neste Oy Katalytkomponenter foer polymeringskatalyter av alfaolefiner och foerfarande foer deras framstaellning.
FI75841C (fi) * 1986-04-01 1988-08-08 Neste Oy Katalytkomponenter foer polymeringskatalyter av alfaolefiner och foerfarande foer deras framstaellning.
US4829038A (en) * 1986-06-17 1989-05-09 Amoco Corporation Alpha-olefin polymerization catalyst system including an advantageous modifier component
IT1197320B (it) * 1986-10-02 1988-11-30 Ausimont Spa Catalizzatori per la preparazione di copolimeri olefinici elastomerici,saturi ed insaturi,e vopolimeri con essi ottenuti
US4810761A (en) * 1987-03-31 1989-03-07 Union Carbide Corporation Ethylene polymerization catalyst
US4870039A (en) * 1987-11-24 1989-09-26 Shell Oil Company Olefin polymerization catalysts from soluble magnesium alkoxides made from mixed magnesium alkyls and aryls
US4870040A (en) * 1987-11-24 1989-09-26 Shell Oil Company Olefin polymerization catalysts from soluble magnesium alkoxides made from alkyl or aryl magnesium mixed with a branched or aromatic aldehyde
FR2639351B1 (es) * 1988-11-23 1992-12-31 Atochem
NO176841C (no) * 1989-04-27 1995-06-07 Sumitomo Chemical Co Flytende katalysatorkomponent, katalysatorsystem inneholdende denne og fremgangsmåte for fremstilling av etylen - lefin-kopolymerer ved anvendelse av katalysatorsystemet
FI85151C (fi) * 1989-09-06 1992-03-10 Neste Oy Ny baerarkatalysator foer polymerisation av eten.
FR2686608B1 (fr) * 1992-01-27 1994-03-18 Elf Atochem Sa Procede d'activation de support a base de chlorure de magnesium entrant dans la fabrication de la composante catalytique de polymerisation de l'ethylene.
US5378672A (en) * 1992-03-04 1995-01-03 Fina Technology, Inc. Methods and systems for multi-component catalyst formulation
FR2697526B1 (fr) * 1992-10-30 1994-12-16 Bp Chemicals Snc Procédé de préparation d'un catalyseur de type Ziegler-Natta pour la polymérisation des oléfines.
DE69216825T2 (de) * 1992-08-31 1997-05-28 Fina Research Magnesiumchlorid-Komplexe, Verfahren und Verwendung
IT1255523B (it) * 1992-09-24 1995-11-09 Himont Inc Componenti e catalizzatori per la polimerizzazione di olefine
JPH09328513A (ja) * 1996-04-09 1997-12-22 Mitsui Petrochem Ind Ltd 固体状チタン触媒成分の調製方法、オレフィンの重合用触媒およびオレフィン重合方法
US5807800A (en) * 1997-02-11 1998-09-15 Fina Technology, Inc. Process for producing stereospecific polymers
TW396168B (en) * 1997-08-28 2000-07-01 Toho Titanium K K Solid catalyst component and catalyst for polymerization of olefins
US6090325A (en) * 1997-09-24 2000-07-18 Fina Technology, Inc. Biaxially-oriented metallocene-based polypropylene films
US5908594A (en) * 1997-09-24 1999-06-01 Fina Technology, Inc. Process of making polypropylene fiber
US5997679A (en) * 1997-10-17 1999-12-07 Fina Technology, Inc. Heat-seal strength in polyolefin films
US5958566A (en) * 1997-10-17 1999-09-28 Fina Technology, Inc. Metal bond strength in polyolefin films
US6207093B1 (en) 1998-04-24 2001-03-27 Fina Technology, Inc. Compositions for improved orientation processing
EP1020404A1 (en) * 1999-01-18 2000-07-19 Fina Research S.A. Production of powder catalysts
US6416699B1 (en) 1999-06-09 2002-07-09 Fina Technology, Inc. Reduced shrinkage in metallocene isotactic polypropylene fibers
US6905637B2 (en) 2001-01-18 2005-06-14 General Electric Company Electrically conductive thermoset composition, method for the preparation thereof, and articles derived therefrom
US7235192B2 (en) 1999-12-01 2007-06-26 General Electric Company Capped poly(arylene ether) composition and method
US6878782B2 (en) * 1999-12-01 2005-04-12 General Electric Thermoset composition, method, and article
SG95635A1 (en) * 2000-03-30 2003-04-23 Sumitomo Chemical Co Process for producing catalyst for ethylene polymerization and process for producing ehtylene polymer
US6916892B2 (en) * 2001-12-03 2005-07-12 Fina Technology, Inc. Method for transitioning between Ziegler-Natta and metallocene catalysts in a bulk loop reactor for the production of polypropylene
US6733719B2 (en) * 2002-01-14 2004-05-11 Sunoco Inc. (R&M) Polypropylene biaxially oriented film
US7025919B2 (en) * 2002-03-28 2006-04-11 Fina Technology, Inc. Syndiotactic polypropylene fibers
US6998431B2 (en) 2002-03-28 2006-02-14 Fina Technology, Inc. Polymerization process
US6824721B2 (en) * 2002-03-29 2004-11-30 Fina Technology, Inc. Polypropylene fibers
US20030215588A1 (en) * 2002-04-09 2003-11-20 Yeager Gary William Thermoset composition, method, and article
US6878327B2 (en) * 2002-04-19 2005-04-12 Fina Technology, Inc. Process of making polypropylene fibers
US6657024B1 (en) 2002-09-03 2003-12-02 Fina Technology, Inc. Polymerization catalyst system using n-butylmethyldimethoxysilane for preparation of polypropylene film grade resins
DE60336074D1 (de) * 2002-10-11 2011-03-31 Univ Connecticut Mischungen von amorphen und semikristallinen polymeren mit formgedächtniseigenscchaften
US7078468B2 (en) * 2003-06-27 2006-07-18 Fina Technology, Inc. Polymerization catalyst system using di-sec-butyldimethoxysilane for preparation of polypropylene
US20060009603A1 (en) * 2004-07-09 2006-01-12 David Young Fibrillation-resistant polypropylene tape
CN100338018C (zh) 2004-10-29 2007-09-19 中国石油化工股份有限公司 一种环戊酯类化合物及其合成方法和应用
US7053163B1 (en) 2005-02-22 2006-05-30 Fina Technology, Inc. Controlled comonomer distribution along a reactor for copolymer production
US7413812B2 (en) * 2005-04-26 2008-08-19 Fina Technology, Inc. Polypropylene article and method of preparing polypropylene article
US20060279026A1 (en) * 2005-06-09 2006-12-14 Fina Technology, Inc. Polypropylene composition for injection stretch blow molding
US20070045894A1 (en) * 2005-08-31 2007-03-01 Mcleod Michael A Process for producing polyolefin films
US20070110997A1 (en) * 2005-11-17 2007-05-17 Fina Technology, Inc. Polymeric film structures and compositions for high surface treatment retention
US7446167B2 (en) * 2006-04-13 2008-11-04 Fina Technology, Inc. Catalyst deactivation agents and methods for use of same
US20080061468A1 (en) * 2006-09-07 2008-03-13 Frank Li Fiber processing of high ethylene level propylene-ethylene random copolymers by use of nucleators
US8075830B2 (en) 2006-12-15 2011-12-13 Fina Technology, Inc. Polypropylene blown film
JP2010514905A (ja) * 2006-12-29 2010-05-06 フイナ・テクノロジー・インコーポレーテツド ポリプロピレンフィルムグレード樹脂製造用ｎ−ブチルメチルジメトキシシラン使用スクシネート含有重合触媒系
US7473751B2 (en) * 2007-01-22 2009-01-06 Fina Technology, Inc. Biaxially-oriented metallocene-based polypropylene films having reduced thickness
US8859084B2 (en) * 2008-01-29 2014-10-14 Fina Technology, Inc. Modifiers for oriented polypropylene
US20090202770A1 (en) * 2008-02-08 2009-08-13 Fengkui Li Polypropylene/polyisobutylene blends and films prepared from same
US8545971B2 (en) * 2008-06-30 2013-10-01 Fina Technology, Inc. Polymeric compositions comprising polylactic acid and methods of making and using same
US8268913B2 (en) * 2008-06-30 2012-09-18 Fina Technology, Inc. Polymeric blends and methods of using same
US8759446B2 (en) 2008-06-30 2014-06-24 Fina Technology, Inc. Compatibilized polypropylene and polylactic acid blends and methods of making and using same
US20100087602A1 (en) * 2008-10-08 2010-04-08 Fina Technology, Inc. Long chain branched polypropylene for cast film applications
CN101735346B (zh) 2008-11-07 2012-05-30 中国石油天然气股份有限公司 一种丙烯均聚和共聚的催化剂及其制备方法和应用
US20100125124A1 (en) * 2008-11-17 2010-05-20 Fina Technology, Inc. Methods of catalyst activation
US9174384B2 (en) 2009-09-01 2015-11-03 Fina Technology, Inc. Multilayer polypropylene films and methods of making and using same
WO2011081460A2 (ko) 2009-12-31 2011-07-07 주식회사 효성 올레핀 중합용 지글러-나타 촉매
RU2458938C1 (ru) * 2010-12-02 2012-08-20 Закрытое Акционерное Общество "Сибур Холдинг" Каталитическая система, способ ее получения и полиолефины, полученные на ее основе
RU2018141545A (ru) 2016-05-20 2020-05-26 Эквистар Кемикалз, Лп Клеевые композиции на основе полиолефина, имеющего привитые полиолефиновые/эластомерные сополимеры, полученные поточным технологическим процессом
BR112019006896B1 (pt) 2016-10-28 2022-12-06 Fina Technology, Inc Processo para fabricação de uma película de bopp
WO2018094085A1 (en) 2016-11-18 2018-05-24 Equistar Chemicals, Lp Polyolefin materials for rotational molding applications having improved impact properties and color stability
MX2019008859A (es) 2017-01-27 2019-09-11 Equistar Chem Lp Peliculas, laminas y estructuras multicapa de polietileno de baja densidad lineal modificado por peroxido.
EP3619246A1 (en) 2017-05-03 2020-03-11 Equistar Chemicals, LP Ethylene alpha-olefin copolymers and methods
US20190077129A1 (en) 2017-09-08 2019-03-14 Equistar Chemicals, Lp Polyolefin based adhesive compositions having grafted polyolefin copolymers and methods of formation
WO2020056119A1 (en) 2018-09-14 2020-03-19 Fina Technology, Inc. Polyethylene and controlled rheology polypropylene polymer blends and methods of use
CN113474404A (zh) 2019-02-20 2021-10-01 弗纳技术股份有限公司 具有低翘曲的聚合物组合物
MX2022014359A (es) 2020-06-30 2022-12-15 Fina Technology Composicion de polipropileno clara para termoformacion.

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981725A (en) * 1955-11-16 1961-04-25 Shell Oil Co Process for polymerizing olefins
US3008943A (en) * 1955-12-01 1961-11-14 Exxon Research Engineering Co Polymerization catalyst
BE554242A (es) * 1956-01-18
BE574129A (es) * 1957-12-23
BE576984A (es) * 1958-03-24
BE580006A (es) * 1958-06-27
BE584091A (es) * 1958-10-30
US3193545A (en) * 1958-12-03 1965-07-06 Exxon Research Engineering Co Catalyst and process for polymerizing alpha-olefins utilizing titanium halide derivatives
BE585927A (es) * 1958-12-23
US3238146A (en) * 1960-03-21 1966-03-01 Shell Oil Co Catalysts and their preparation
FR1291788A (fr) * 1960-03-21 1962-04-27 Shell Int Research Procédé de préparation de nouveaux catalyseurs de polymérisation
NL263699A (es) * 1960-04-27
DE1445225B2 (de) * 1960-09-24 1971-11-18 Badische Anilin & Soda Fabrik AG, 6700 Ludwigshafen Verfahren zur polymerisation von monoalpha olefinen mit drei oder mehr kohlenstoffatomen
NL273776A (es) * 1961-01-30
US3210332A (en) * 1963-05-03 1965-10-05 Phillips Petroleum Co Production of solid olefin polymers
US3476730A (en) * 1966-07-22 1969-11-04 Huels Chemische Werke Ag Process for low-pressure polymerization of alpha-olefines
NL137056C (es) * 1966-10-21
CA920299A (en) * 1968-08-01 1973-01-30 Mitsui Petrochemical Industries Process for the polymerization and/or copolymerization of olefins with use of ziegler-type catalytsts supported on carrier
YU35844B (en) * 1968-11-25 1981-08-31 Montedison Spa Process for obtaining catalysts for the polymerization of olefines
DK157556C (da) * 1969-03-24 1990-06-11 Montedison Spa Katalysatorer til polymerisation af ethylen og dettes blandinger med alkener
NL162664B (nl) * 1969-06-20 1980-01-15 Montedison Spa Werkwijze om een katalysator te bereiden voor de poly- merisatie van alkenen-1.

Also Published As

Publication number Publication date
RO62731A (fr) 1978-03-15
YU36189B (en) 1982-02-25
DK130744C (es) 1975-09-08
US4636486A (en) 1987-01-13
US4544717A (en) 1985-10-01
IL34739A0 (en) 1970-08-19
DE2029992A1 (es) 1970-12-23
SE417611B (sv) 1981-03-30
FR2052706A5 (es) 1971-04-09
AT302648B (de) 1972-10-25
YU153970A (en) 1981-06-30
IL34739A (en) 1973-10-25
DK130744B (da) 1975-04-07
CS153084B2 (es) 1974-02-22
NL7008708A (es) 1970-12-22
SU414770A3 (ru) 1974-02-05
BE752252A (fr) 1970-12-21
JPS5819334B1 (es) 1983-04-18
GB1310547A (en) 1973-03-21
PL80715B1 (es) 1975-08-30
DE2029992C3 (de) 1975-04-17
DE2029992B2 (de) 1974-08-15
NL162664B (nl) 1980-01-15

Similar Documents

Publication Publication Date Title
ES380918A1 (es) Procedimiento para la polimerizacion de etileno.
ES393773A1 (es) Procedimiento de preparacion de catalizadores para la poli-merizacion de olefinas.
ES374212A1 (es) Procedimiento para la polimerizacion del etileno y de sus mezclas con alfa-olefina yno diolefinas.
ES373699A1 (es) Procedimiento para la polimerizacion del etileno o de sus mezclas con alfa-olefinas yno diolefinas.
ES393406A1 (es) Procedimiento de preparacion de catalizadores para la poli-merizacion de las olefinas.
ES451881A1 (es) Procedimiento para la polimerizacion de alfa-olefinas.
ES436796A1 (es) Procedimiento para polimerizar una alfa-olefina.
GB1275142A (en) Process for the polymerization of olefins
ES448086A1 (es) Procedimiento para la preparacion de un catalizador para la polimerizacion de etileno yno alfa-olefinas.
ES401296A1 (es) Procedimiento para la produccion de composiciones formado- ras de peliculas.
GB1472824A (en) Catalyst component for the polymerization of olefins
ES377807A1 (es) Procedimiento para la preparacion de catalizadores para la polimerizacion de olefinas.
GB1492174A (en) Polymerisation catalyst
CA991622A (en) Process for the polymerization or copolymerization of ethylene and catalyst compositions therefor
GB1536358A (en) Olefin polymerisation process and catalyst composition for use therein
GB1300734A (en) Improvements in or relating to the catalytic polymerisation of olefins
ES401491A1 (es) Procedimiento para la preparacion de un catalizador para lapolimerizacion de olefinas.
ES8100314A1 (es) Procedimiento para la polimerizacion o copolimerizacion de alfa-olefinas
ES401901A1 (es) Procedimiento para la preparacion de un catalizador para lapolimerizacion de olefinas.
ES375278A1 (es) Procedimiento para la polimerizacion de etileno y sus mez- clas con alfa-olefinas yno diolefinas.
GB1309774A (en) Olefin polymerization
GB1309688A (en) Titanium solid catalysts and their use in the production of ethylene polymers
GB1348472A (en) Tetraneopentyltitanium and use as polymerization catalyst
ES364601A1 (es) Procedimiento para la preparacion de los solidos cataliti- cos constituyentes de los catalizadores de polimerizacion y copolimerizacion de las olefinas.
GB1150191A (en) Olefin Polymerization Catalyst Pretreatment.