FR2396768A1 - Composants de catalyseurs pour la polymerisation d'alpha-olefines - Google Patents

Composants de catalyseurs pour la polymerisation d'alpha-olefines

Info

Publication number
FR2396768A1
FR2396768A1 FR7819801A FR7819801A FR2396768A1 FR 2396768 A1 FR2396768 A1 FR 2396768A1 FR 7819801 A FR7819801 A FR 7819801A FR 7819801 A FR7819801 A FR 7819801A FR 2396768 A1 FR2396768 A1 FR 2396768A1
Authority
FR
France
Prior art keywords
compound
mole
amount
titanium
adduct
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
FR7819801A
Other languages
English (en)
Other versions
FR2396768B1 (fr
Inventor
Giuliano Cecchin
Et Enrico Albizzati
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
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 filed Critical Montedison SpA
Publication of FR2396768A1 publication Critical patent/FR2396768A1/fr
Application granted granted Critical
Publication of FR2396768B1 publication Critical patent/FR2396768B1/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
    • 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
    • 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

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)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

L'invention concerne des composants catalytiques pour la polymérisation d'alpha-oléfines, et de leurs mélanges avec de l'éthyléne. Selon l'invention, ils comprennent un dihalogénure de magnésium et des complexes de dihalogénures de magnésium avec un composé de titane et un composé donneur d'électrons se composant du produit solide de la réaction d'un composé de titane halogéné contenant au moins une liaison titane-halognène avec au moins l'une des substances qui suivent : 1. un composé donneur d'électrons ED ne contenant pas d'atomes d'hydrogène actif et un produit d'addition a d'un dihalogénure de magnésium avec au moins un composé donneur d'électrons contenant des atomes d'hydrogène actif, présent dans le produit d'addition à une quantité d'au moins 0,5 mole/mole de dihalogénure de magnésium, en faisant réagir le composé donneur d'électrons ED en une quantité pas inférieure à 0,05 mole/mole du composé AH du produit d'addition ; 2. un produit d'addition b d'au moins un dihalogénure de magnésium avec un composé AH et ED, comme on l'a défini précédemment, le composé ED étant présent en une quantité comprise entre 0,05 et 1 mole/mole du composé AH, et le produit d'addition b étant préparé selon des méthodes classiques ne comprenant pas de traitements de co-broyage du composé ED et du d'halogénure de magnésium; la quantité du composé ED restant dans le solide après extraction avec TiCl4 à 80 degrés C pendant 2 heures étant comprise entre 0,3 et 3 moles/atome gramme de titane, et la quantité des composés de titane pouvant être extraits avec TiCl4 à 80 degrés C étant inférieure à 50 %. L'invention s'applique notamment à la polymérisation du propylène et de mélanges d'alpha-oléfines les unes avec les autres ou avec de l'éthylène.
FR7819801A 1977-07-04 1978-07-03 Composants de catalyseurs pour la polymerisation d'alpha-olefines Granted FR2396768A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT25345/77A IT1114822B (it) 1977-07-04 1977-07-04 Componenti di catalizzatori per la polimerizzazione delle alfa-olefine

Publications (2)

Publication Number Publication Date
FR2396768A1 true FR2396768A1 (fr) 1979-02-02
FR2396768B1 FR2396768B1 (fr) 1981-04-30

Family

ID=11216417

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819801A Granted FR2396768A1 (fr) 1977-07-04 1978-07-03 Composants de catalyseurs pour la polymerisation d'alpha-olefines

Country Status (29)

Country Link
US (2) US4294721A (fr)
JP (1) JPS5439484A (fr)
AR (1) AR218315A1 (fr)
AT (1) AT363681B (fr)
AU (1) AU522016B2 (fr)
BE (1) BE868682A (fr)
BR (1) BR7804265A (fr)
CA (1) CA1124257A (fr)
DE (1) DE2828887A1 (fr)
DK (1) DK160255C (fr)
ES (1) ES471372A1 (fr)
FR (1) FR2396768A1 (fr)
GB (1) GB2000514B (fr)
GR (1) GR71672B (fr)
HU (1) HU179253B (fr)
IN (1) IN150539B (fr)
IT (1) IT1114822B (fr)
MX (1) MX150092A (fr)
NL (1) NL188041C (fr)
NO (1) NO155775C (fr)
PH (1) PH14962A (fr)
PL (1) PL113953B1 (fr)
PT (1) PT68238A (fr)
RO (1) RO77020A (fr)
SE (1) SE440226B (fr)
SU (1) SU1233790A3 (fr)
TR (1) TR20939A (fr)
YU (1) YU41592B (fr)
ZA (1) ZA783796B (fr)

Families Citing this family (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1092448B (it) * 1978-02-09 1985-07-12 Montedison Spa Catalizzatori per la polimerizzazione delle alfa-olefine
JPS56811A (en) * 1979-06-18 1981-01-07 Mitsui Petrochem Ind Ltd Preparation of olefin polymer or copolymer
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.
IT1190683B (it) * 1982-02-12 1988-02-24 Montedison Spa Componenti e catalizzatori per la polimerizzazione di olefine
IT1190681B (it) * 1982-02-12 1988-02-24 Montedison Spa Componenti e catalizzatori per la polimerizzazione di olefine
US4506029A (en) * 1982-12-20 1985-03-19 Stauffer Chemical Company Supported catalyst for polymerization of olefins
CA1213267A (fr) * 1983-04-21 1986-10-28 Albert P. Masino Methode et catalyseur de polymerisation des polyolefines
US4952737A (en) * 1983-04-21 1990-08-28 Phillips Petroleum Company Polyolefin polymerization process and catalyst
US4492768A (en) * 1983-08-19 1985-01-08 Phillips Petroleum Company Polyolefin polymerization process and catalyst
US4503159A (en) * 1983-08-19 1985-03-05 Phillips Petroleum Company Polyolefin polymerization process and catalyst
US4520121A (en) * 1983-10-28 1985-05-28 Inkrott Kenneth E Magnesium halide hydrates and polymerization catalysts prepared therefrom
IT1199833B (it) * 1986-11-10 1989-01-05 Himont Inc Catalizzatori per la preparazione di polimeri delle alfa-olefine a stretta distribuzione dei pesi molecolari
US4767735A (en) * 1987-02-02 1988-08-30 Cosden Technology, Inc. Catalyst pretreatment process
JPS63219610A (ja) * 1987-03-03 1988-09-13 Kobayashi Textile Eng Kk 自動繰糸機における飛び繊度防止装置
FR2616789B1 (fr) * 1987-06-16 1991-07-26 Atochem Procede de traitement de composante catalytique sur support d'oxyde metallique poreux pour la polymerisation des olefines en phase gazeuse. application du catalyseur obtenu a la polymerisation des olefines
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
FR2628110B1 (fr) * 1988-03-03 1994-03-25 Bp Chimie Catalyseur de polymerisation d'olefines de type ziegler-natta, supporte sur des particules spheriques de chlorure de magnesium, et procede de preparation
FI102070B (fi) 1996-03-29 1998-10-15 Borealis As Uusi kompleksiyhdiste, sen valmistus ja käyttö
US6930071B2 (en) * 1997-01-28 2005-08-16 Fina Technology, Inc. Ziegler-natta catalyst for polyolefins
US6864207B2 (en) * 1997-01-28 2005-03-08 Fina Technology, Inc. Ziegler-Natta catalyst for polyolefins
KR100334167B1 (ko) * 1997-05-08 2002-11-22 삼성종합화학주식회사 알파-올레핀중합방법
GB2325004B (en) * 1997-05-09 1999-09-01 Samsung General Chemicals Co A catalyst for polymerization and copolymerization of olefins
KR100240519B1 (ko) * 1997-09-11 2000-01-15 유현식 새로운 올레핀 중합용 킬레이트 촉매 및 이를 이용한 올레핀중합 방법
KR100334165B1 (ko) 1998-04-17 2002-11-27 삼성종합화학주식회사 에틸렌 중합 및 에틸렌/α-올레핀 공중합용 담지촉매의 제조방법
KR100334164B1 (ko) 1998-04-17 2002-09-25 삼성종합화학주식회사 에틸렌 중합 및 에틸렌/α-올레핀 공중합용 TI/V 담지촉매의제조방법
KR100705475B1 (ko) 1998-12-30 2007-12-20 삼성토탈 주식회사 올레핀 중합 및 공중합용 촉매
US6197714B1 (en) * 1999-03-23 2001-03-06 Cryovac, Inc. Supported catalysts and olefin polymerization processes utilizing same
US6197715B1 (en) * 1999-03-23 2001-03-06 Cryovac, Inc. Supported catalysts and olefin polymerization processes utilizing same
KR100524293B1 (ko) 1999-05-27 2005-10-26 삼성토탈 주식회사 에틸렌 중합 및 공중합용 촉매
KR100546499B1 (ko) * 1999-05-27 2006-01-26 삼성토탈 주식회사 에틸렌 중합 및 공중합용 촉매
US6586543B1 (en) * 1999-09-01 2003-07-01 Degussa Ag Process for the preparation of substantially amorphous poly-α-olefins
ATE276281T1 (de) 1999-10-23 2004-10-15 Samsung General Chemicals Co Verbesserter katalysator für olefinhomo- und co- polymerisation
KR100361224B1 (ko) 1999-12-01 2002-11-29 삼성종합화학주식회사 에틸렌 중합 및 공중합용 촉매의 제조방법
KR100351386B1 (ko) 2000-04-24 2002-09-05 삼성종합화학주식회사 초고분자량 폴리에틸렌 제조용 촉매 및 이를 이용한초고분자량 폴리에틸렌 제조방법
KR100353960B1 (ko) 2000-05-31 2002-09-27 삼성종합화학주식회사 에틸렌 중합체 및 공중합체의 제조방법
KR100359932B1 (ko) 2000-06-15 2002-11-07 삼성종합화학주식회사 에틸렌 중합 및 공중합용 촉매
KR100387734B1 (ko) * 2000-06-17 2003-06-18 삼성종합화학주식회사 올레핀 중합용 촉매 및 중합방법
KR100389476B1 (ko) * 2000-11-09 2003-06-27 삼성종합화학주식회사 에틸렌 중합체 및 공중합체 제조방법
KR100389477B1 (ko) * 2000-11-09 2003-06-27 삼성종합화학주식회사 에틸렌 중합체 및 공중합체 제조방법
KR100389475B1 (ko) * 2000-11-09 2003-06-27 삼성종합화학주식회사 에틸렌 중합 또는 공중합용 촉매의 제조 방법
KR100389962B1 (ko) * 2000-11-10 2003-07-02 삼성종합화학주식회사 에틸렌 중합 또는 공중합용 촉매의 제조 방법
KR100421551B1 (ko) * 2000-12-16 2004-03-09 삼성아토피나주식회사 올레핀 전중합 촉매 및 이를 이용한 올레핀 중합방법
WO2002051882A1 (fr) * 2000-12-22 2002-07-04 Samsung General Chemicals Co., Ltd. Catalyseur de chelate pour polymerisation olefinique et procede de polymerisation olefinique utilise
JP3921448B2 (ja) * 2000-12-22 2007-05-30 サムソン ジェネラル ケミカルズ カンパニー リミテッド 難燃性ポリプロピレン樹脂組成物
US20040072936A1 (en) * 2000-12-22 2004-04-15 Sok-Won Kim Polyolefin resin composition
WO2002051933A1 (fr) * 2000-12-22 2002-07-04 Samsung General Chemicals Co., Ltd. Composition de resine de polypropylene dont la durete superficielle et la resistance aux rayures sont ameliorees
KR100421553B1 (ko) 2000-12-27 2004-03-09 삼성아토피나주식회사 알파 올레핀 중합 방법
US6743743B2 (en) * 2001-01-29 2004-06-01 Hoya Corporation Optical glass
KR100496776B1 (ko) * 2001-06-21 2005-06-22 삼성토탈 주식회사 에틸렌 중합 및 공중합용 촉매
KR100530794B1 (ko) * 2001-06-21 2005-11-23 삼성토탈 주식회사 에틸렌 중합 및 공중합용 촉매
KR100530795B1 (ko) * 2001-12-26 2005-11-23 삼성토탈 주식회사 에틸렌 중합 및 공중합 방법
WO2003106512A2 (fr) 2002-06-14 2003-12-24 Union Carbide Chemicals & Plastics Technology Corporation ; Composition catalytique et procede de polymerisation utilisant des melanges constitues d'agents de regulation de selectivite
US6657024B1 (en) 2002-09-03 2003-12-02 Fina Technology, Inc. Polymerization catalyst system using n-butylmethyldimethoxysilane for preparation of polypropylene film grade resins
RU2342998C2 (ru) * 2002-12-18 2009-01-10 Базелль Полиолефин Италия С.П.А. Магнийдихлоридсодержащие аддукты и каталитические компоненты, полученные с ними
US6818711B2 (en) 2003-01-01 2004-11-16 Fina Technology, Inc. Polymerization of olefins using a ziegler-natta catalyst system having an external electron donor
US6767857B1 (en) 2003-05-29 2004-07-27 Fina Technology, Inc. Process for forming a Ziegler-Natta catalyst system having a controlled morphology
EP1641835B1 (fr) * 2003-06-24 2010-01-06 Union Carbide Chemicals & Plastics Technology LLC Composition catalytique et procédé de polymérisation utilisant un mélange de donneurs d'électrons silaniques
US7078468B2 (en) * 2003-06-27 2006-07-18 Fina Technology, Inc. Polymerization catalyst system using di-sec-butyldimethoxysilane for preparation of polypropylene
US20050085601A1 (en) * 2003-10-15 2005-04-21 Kayo Vizzini Process for forming Ziegler-Natta catalyst for use in polyolefin production
KR101109345B1 (ko) * 2003-09-23 2012-01-31 다우 글로벌 테크놀로지스 엘엘씨 모노카르복실산 에스테르 내부 공여체를 갖는 촉매 조성물및 프로필렌 중합 방법
KR101114748B1 (ko) * 2003-09-23 2012-03-05 다우 글로벌 테크놀로지스 엘엘씨 자가 제한 촉매 조성물 및 프로필렌 중합 방법
EP1668044B1 (fr) * 2003-09-23 2014-05-07 W.R. Grace & CO. - CONN. Composition de catalyseur a autolimitation avec donneur interne d'ester d'acide dicarboxylique et procede de polymerisation de propylene
WO2005035593A1 (fr) * 2003-09-23 2005-04-21 Union Carbide Chemicals & Plastics Technology Corporation Composition de catalyseur renfermant un agent de regulation de selectivite et processus de polymerisation de propylene
BRPI0413962B1 (pt) 2003-09-23 2021-02-02 Dow Global Technologies Inc processo para a polimerização de etileno em fase gasosa
EP1668043B1 (fr) * 2003-09-23 2012-02-29 Union Carbide Chemicals & Plastics Technology LLC Composition de catalyseur auto-extinguible comprenant un ester d'acide monocarboxylique en tant que donneur interne et processus de polymerisation de propylene
WO2005097322A1 (fr) * 2004-04-08 2005-10-20 Institut Kataliza Imeni G.K. Boreskova Sibirskogo Otdeleniya Rossiiskoi Akademii Nauk Procede de preparation d'un catalyseur et procede de polymerisation d'ethylene et de copolymerisation d'ethylene avec des alpha-olefines
US7067451B1 (en) * 2004-12-17 2006-06-27 Fina Technology, Inc. Soluble magnesium complexes useful for the production of polyolefin catalysts and catalysts prepared therewith
US7468339B2 (en) * 2004-12-17 2008-12-23 Fina Technology, Inc. Diketonate complex-derived catalysts useful for preparing polyolefins
US20060240733A1 (en) * 2005-04-25 2006-10-26 Fina Technology, Inc. Fibers and fabrics prepared from blends of homopolymers and copolymers
US20060252636A1 (en) * 2005-05-05 2006-11-09 Fina Technology, Inc. Silica supported ziegler-natta catalysts useful for preparing polyolefins
US20070004875A1 (en) * 2005-06-22 2007-01-04 Fina Technology, Inc. Cocatalysts useful for improving polyethylene film properties
US20070004876A1 (en) * 2005-06-22 2007-01-04 Fina Technology, Inc. Cocatalysts for olefin polymerizations
US20070003720A1 (en) * 2005-06-22 2007-01-04 Fina Technology, Inc. Cocatalysts useful for preparing polyethylene pipe
US7915342B2 (en) * 2005-11-28 2011-03-29 Fina Techology, Inc. Breathable films
US7445827B2 (en) * 2005-12-02 2008-11-04 Fina Technology, Inc. Polymer compositions for reduced shrinkage
EP2036928B1 (fr) * 2006-04-06 2015-12-23 China Petroleum & Chemical Corporation Adduit d'halogénure de magnésium, élément catalyseur de polymérisation d'oléfines, et catalyseur associé
US8080699B2 (en) 2009-08-28 2011-12-20 Chemtura Corporation Two-stage process and system for forming high viscosity polyalphaolefins
CA2665244A1 (fr) * 2006-12-29 2008-07-10 Fina Technology, Inc. Systeme de catalyseur de polymerisation contenant du succinate utilisant du n-butylmethyldimethoxysilane pour la preparation de resines de film de polypropylene
US8003741B2 (en) 2008-02-07 2011-08-23 Fina Technology, Inc. Ziegler-Natta catalyst
US7790819B1 (en) 2009-04-13 2010-09-07 Formosa Plastics Corporation, U.S.A. Bicyclic organosilicon compounds as electron donors for polyolefin catalysts
US9815918B2 (en) 2012-03-19 2017-11-14 Formosa Plastics Corporation, U.S.A. Catalyst component for high activity and high stereoselectivity in olefin polymerization
US8575283B1 (en) 2012-06-28 2013-11-05 Formosa Plastics Corporation, U.S.A. Heterocyclic organic compounds as electron donors for polyolefin catalysts
US9593184B2 (en) 2014-10-28 2017-03-14 Formosa Plastics Corporation, Usa Oxalic acid diamides as modifiers for polyolefin catalysts
US9777084B2 (en) 2016-02-19 2017-10-03 Formosa Plastics Corporation, Usa Catalyst system for olefin polymerization and method for producing olefin polymer
US11427660B2 (en) 2016-08-17 2022-08-30 Formosa Plastics Corporation, Usa Organosilicon compounds as electron donors for olefin polymerization catalysts and methods of making and using same
US10822438B2 (en) 2017-05-09 2020-11-03 Formosa Plastics Corporation Catalyst system for enhanced stereo-specificity of olefin polymerization and method for producing olefin polymer
US10124324B1 (en) 2017-05-09 2018-11-13 Formosa Plastics Corporation, Usa Olefin polymerization catalyst components and process for the production of olefin polymers therewith
WO2020172306A1 (fr) 2019-02-20 2020-08-27 Fina Technology, Inc. Compositions polymères à faible gauchissement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4187196A (en) * 1971-06-25 1980-02-05 Montedison S.P.A. Process for the stereoregular polymerization of alpha-olefins
JPS5812281B2 (ja) * 1974-11-15 1983-03-07 三井化学株式会社 コウリツタイキソクセイポリ −ａ− オレフインノ セイゾウホウホウ
IT1054410B (it) * 1975-11-21 1981-11-10 Mitsui Petrochemical Ind Catalizzatori per la polimerizzazione delle alfa olefine
JPS52104593A (en) * 1976-03-01 1977-09-02 Mitsui Petrochem Ind Ltd Polymerization of olefins
JPS53109587A (en) * 1977-03-07 1978-09-25 Mitsui Petrochem Ind Ltd Polymerization of olefin

Also Published As

Publication number Publication date
YU41592B (en) 1987-10-31
AR218315A1 (es) 1980-05-30
ES471372A1 (es) 1979-10-01
JPS6411650B2 (fr) 1989-02-27
IN150539B (fr) 1982-11-13
PT68238A (en) 1978-07-01
NO155775B (no) 1987-02-16
HU179253B (en) 1982-09-28
BE868682A (fr) 1979-01-03
JPS5439484A (en) 1979-03-26
YU156178A (en) 1982-10-31
US4439540A (en) 1984-03-27
NL188041C (nl) 1992-03-16
IT1114822B (it) 1986-01-27
ZA783796B (en) 1979-07-25
US4294721A (en) 1981-10-13
CA1124257A (fr) 1982-05-25
PL113953B1 (en) 1981-01-31
GB2000514A (en) 1979-01-10
SE440226B (sv) 1985-07-22
DE2828887A1 (de) 1979-01-25
MX150092A (es) 1984-03-15
GB2000514B (en) 1982-01-20
BR7804265A (pt) 1979-03-20
PH14962A (en) 1982-02-05
PL208159A1 (pl) 1979-04-09
NL7807259A (nl) 1979-01-08
AU522016B2 (en) 1982-05-13
NO155775C (no) 1987-05-27
DK160255C (da) 1991-07-22
SU1233790A3 (ru) 1986-05-23
RO77020A (fr) 1982-04-12
AU3766378A (en) 1980-01-03
NO782229L (no) 1979-01-05
DE2828887C2 (fr) 1990-04-05
DK290378A (da) 1979-01-05
NL188041B (nl) 1991-10-16
DK160255B (da) 1991-02-18
SE7807331L (sv) 1979-01-05
TR20939A (tr) 1983-01-21
FR2396768B1 (fr) 1981-04-30
AT363681B (de) 1981-08-25
GR71672B (fr) 1983-06-21
ATA484678A (de) 1981-01-15

Similar Documents

Publication Publication Date Title
FR2396768A1 (fr) Composants de catalyseurs pour la polymerisation d'alpha-olefines
FR2361423A1 (fr) Composants catalytiques utiles pour polymeriser des alpha-olefines et catalyseurs qui en sont obtenus
FR2422690A1 (fr) Catalyseurs et composants de catalyseurs utiles pour polymeriser des olefines
FR2439795A1 (fr) Composants de catalyseurs et catalyseurs pour la polymerisation des olefines
FR2378046A1 (fr) Composant catalytique solide pour catalyseurs de polymerisation d'alpha-olefines
FR2392037A1 (fr) Catalyseurs pour la polymerisation d'olefines
Njus et al. Vitamins C and E donate single hydrogen atoms in vivo
FR2416903A1 (fr) Catalyseurs pour la polymerisation d'alpha-olefines
FR2363583A1 (fr) Procede de preparation de polymeres ou de copolymeres d'a-olefines
FR2421929A1 (fr) Compositions, bains de placage et procede pour l'electrodeposition d'etain et/ou de plomb
ES8403142A1 (es) Procedimiento para la preparacion de un catalizador para la polimerizacion de alfa-olefinas.
FR2418242A1 (fr) Procede pour la production de polymeres a-olefiniques de haute stereoregularite
GB1445503A (en) Acylamino acid amides
CA2085192A1 (fr) Derives de 2-imidazoline-5-ones et 2-imidazoline-5-thiones fongicides
FR2430236A1 (fr) Composition reductrice et procede pour la preparation de composes marques au technetium-99m, et substances radiopharmaceutiques contenant ces composes
FR2442865A1 (fr) Procede pour preparer un copolymere d'ethylene
CA2086426A1 (fr) Procede de preparation de complexes nitruro de metaux de transition
FR2423498A1 (fr) Catalyseur pour la polymerisation d'olefines
FR2384835A1 (fr) Compositions de polymeres auto-extinctrices
FR2369284A1 (fr) Produits de reaction d'isocyanates silyles avec des composes interessants du point de vue chimiqu
FR2439212A1 (fr) Procede ameliore pour preparer un copolymere d'ethylene et de propylene
FR2429229A1 (fr) Procede pour preparer des polyolefines
FR2391229A1 (fr) Procede de polymerisation d'alpha-olefines ayant au moins 3 atomes de carbone, et catalyseur a utiliser dans ce procede
FR2375303A1 (fr) Preparation comprenant des constituants de colorants difficilement solubles ou insolubles dans l'eau
BE899894A (fr) Nouveau composes indoanilines ou indophenols leur procede et preparation, compositions de teinture les contenant et procede de teinture de cheveux.