IT1230756B - Metodo per la preparazione di polibutadiene a lavorabilita' migliorata. - Google Patents

Metodo per la preparazione di polibutadiene a lavorabilita' migliorata.

Info

Publication number
IT1230756B
IT1230756B IT8919484A IT1948489A IT1230756B IT 1230756 B IT1230756 B IT 1230756B IT 8919484 A IT8919484 A IT 8919484A IT 1948489 A IT1948489 A IT 1948489A IT 1230756 B IT1230756 B IT 1230756B
Authority
IT
Italy
Prior art keywords
polybutadiene
preparation
improved workability
workability
improved
Prior art date
Application number
IT8919484A
Other languages
English (en)
Other versions
IT8919484A0 (it
Inventor
Piero Andreussi
Renzo Bianchi
Mario Bruzzone
Original Assignee
Enichem Elastomers
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 Enichem Elastomers filed Critical Enichem Elastomers
Priority to IT8919484A priority Critical patent/IT1230756B/it
Publication of IT8919484A0 publication Critical patent/IT8919484A0/it
Priority to DE90200300T priority patent/DE69004712T2/de
Priority to DK90200300.3T priority patent/DK0386808T3/da
Priority to EP90200300A priority patent/EP0386808B1/en
Priority to ES90200300T priority patent/ES2059984T3/es
Priority to US07/479,399 priority patent/US4990573A/en
Priority to JP2034024A priority patent/JP2964256B2/ja
Priority to CA002010284A priority patent/CA2010284C/en
Application granted granted Critical
Publication of IT1230756B publication Critical patent/IT1230756B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber
    • 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
    • C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
    • C08F136/06—Butadiene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerization Catalysts (AREA)
IT8919484A 1989-02-17 1989-02-17 Metodo per la preparazione di polibutadiene a lavorabilita' migliorata. IT1230756B (it)

Priority Applications (8)

Application Number Priority Date Filing Date Title
IT8919484A IT1230756B (it) 1989-02-17 1989-02-17 Metodo per la preparazione di polibutadiene a lavorabilita' migliorata.
DE90200300T DE69004712T2 (de) 1989-02-17 1990-02-09 Verfahren zur Herstellung von Polybutadien mit verbesserter Verarbeitkeit.
DK90200300.3T DK0386808T3 (da) 1989-02-17 1990-02-09 Fremgangsmåde til fremstilling af polybutadien med forbedrede forarbejdningsegenskaber
EP90200300A EP0386808B1 (en) 1989-02-17 1990-02-09 Method for preparing polybutadiene endowed with improved processability characteristics
ES90200300T ES2059984T3 (es) 1989-02-17 1990-02-09 Metodo para preparar polibutadieno dotado de caracteristicas mejoradas de procesabilidad.
US07/479,399 US4990573A (en) 1989-02-17 1990-02-13 Method for preparing polybutadiene endowed with improved processability characteristics
JP2034024A JP2964256B2 (ja) 1989-02-17 1990-02-16 ポリブタジエンの製法
CA002010284A CA2010284C (en) 1989-02-17 1990-02-16 Method for preparing polybutadiene endowed with improved processability characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8919484A IT1230756B (it) 1989-02-17 1989-02-17 Metodo per la preparazione di polibutadiene a lavorabilita' migliorata.

Publications (2)

Publication Number Publication Date
IT8919484A0 IT8919484A0 (it) 1989-02-17
IT1230756B true IT1230756B (it) 1991-10-29

Family

ID=11158417

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8919484A IT1230756B (it) 1989-02-17 1989-02-17 Metodo per la preparazione di polibutadiene a lavorabilita' migliorata.

Country Status (8)

Country Link
US (1) US4990573A (it)
EP (1) EP0386808B1 (it)
JP (1) JP2964256B2 (it)
CA (1) CA2010284C (it)
DE (1) DE69004712T2 (it)
DK (1) DK0386808T3 (it)
ES (1) ES2059984T3 (it)
IT (1) IT1230756B (it)

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310817A (en) * 1993-08-24 1994-05-10 Bridgestone/Firestone, Inc. Process and catalyst for producing partially hydrogenated diene polymers containing endo and exo chain trisubstituted unsaturation
US5314967A (en) * 1993-08-24 1994-05-24 Bridgestone/Firestone, Inc. Process and isomerizing agent for isomerizing partially hydrogenated diene polymers
JPH07268132A (ja) * 1994-03-28 1995-10-17 Sumitomo Rubber Ind Ltd ソリッドゴルフボール
US5453471B1 (en) * 1994-08-02 1999-02-09 Carbide Chemicals & Plastics T Gas phase polymerization process
DE4436059A1 (de) * 1994-10-10 1996-04-11 Bayer Ag Verfahren zur Herstellung von mittels Nd-Katalysatoren polymerisierten Dienkautschuken mit niedrigem cold-flow und geringem Eigengeruch
US6018007A (en) 1997-09-22 2000-01-25 Bridgestone Corporation Synthesis of 1,4-trans-polybutadiene using a lanthanide organic acid salt catalyst
RU2141382C1 (ru) * 1998-06-08 1999-11-20 Государственное унитарное предприятие Научно-исследовательский институт синтетического каучука им.акад.С.В.Лебедева Способ получения катализатора полимеризации и сополимеризации ненасыщенных углеводородов
KR100365581B1 (ko) * 1999-02-25 2003-01-15 금호석유화학 주식회사 높은 1,4-시스 함량을 갖는 폴리부타디엔의 제조방법
KR100403090B1 (ko) * 1999-07-27 2003-10-30 금호석유화학 주식회사 높은 1,4-시스 함량을 갖는 폴리부타디엔의 제조방법
ES2320087T3 (es) * 1999-11-12 2009-05-19 Bridgestone Corporation Polimeros modificados preparados con catalizadores basados en lantanido.
US6977281B1 (en) * 1999-11-12 2005-12-20 Bridgestone Corporation Modified polymers prepared with lanthanide-based catalysts
KR100352764B1 (ko) * 2000-03-16 2002-09-16 금호석유화학 주식회사 신규한 단분자 니오디뮴 카르복실레이트 화합물 및 이를포함하는 디엔 중합용 촉매
ES2412979T3 (es) 2000-11-10 2013-07-15 Bridgestone Corporation Cis-1,4-polibutadieno altamente funcionalizado preparado usando nuevos agentes de funcionalización
KR100472649B1 (ko) 2002-11-22 2005-03-11 금호석유화학 주식회사 조절된 저온흐름성을 갖는 고 1,4-시스 폴리부타디엔의제조방법
ITMI20040076A1 (it) * 2004-01-22 2004-04-22 Polimeri Europa Spa Procedimento per la preparazione di polibutadiene a basso grado di ranificazione
US7351776B2 (en) 2004-03-02 2008-04-01 Bridgestone Corporation Bulk polymerization process
ITMI20042022A1 (it) * 2004-10-25 2005-01-25 Polimeri Europa Spa Processo per la preparazione di polibutadiene a basso grado di ramificazione
US7879952B2 (en) * 2005-12-28 2011-02-01 Bridgestone Corporation Functionalized polymers
US7671138B2 (en) * 2006-05-26 2010-03-02 Bridgestone Corporation Polymers functionized with hydrobenzamides
US20080006833A1 (en) * 2006-06-02 2008-01-10 Semiconductor Energy Laboratory Co., Ltd. Lighting device and liquid crystal display device
JP2007323544A (ja) * 2006-06-05 2007-12-13 Sony Corp 情報処理システム、情報処理装置、および方法、並びにコンピュータ・プログラム
US7732534B2 (en) * 2006-08-28 2010-06-08 Bridgestone Corporation Polymers functionalized with nitro compounds
WO2008045372A2 (en) 2006-10-06 2008-04-17 Bridgestone Corporation Branched polymers and methods for their synthesis and use
US8088868B2 (en) 2006-12-19 2012-01-03 Bridgestone Corporation Polymers functionalized with protected oxime compounds
ZA200711158B (en) * 2006-12-28 2009-03-25 Bridgestone Corp A method for producing functionalized cis-1,4-polydienes having high cis-1,4-linkage content and high functionality
US8324329B2 (en) * 2007-08-07 2012-12-04 Bridgestone Corporation Process for producing functionalized polymers
US7879958B2 (en) 2007-08-07 2011-02-01 Bridgestone Corporation Polyhydroxy compounds as polymerization quenching agents
US8314189B2 (en) 2007-10-12 2012-11-20 Bridgestone Corporation Polymers functionalized with heterocyclic nitrile compounds
KR100970767B1 (ko) 2007-12-12 2010-07-16 금호석유화학 주식회사 방향족 유기황화합물로 기능화된 1,4-시스 폴리부타디엔
BRPI0821948B1 (pt) * 2007-12-28 2019-08-13 Bridgestone Corporation polímero funcionalizado, seu método de preparação, vulcanizado, e artigo
JP2009173926A (ja) 2007-12-31 2009-08-06 Bridgestone Corp ポリマーの耐コールドフロー性を向上させる方法
US7741418B2 (en) * 2007-12-31 2010-06-22 Bridgestone Corporation Process for producing polydienes
JP5345835B2 (ja) * 2007-12-31 2013-11-20 株式会社ブリヂストン ポリジエンの製造のためのバルク重合法
US8268933B2 (en) * 2007-12-31 2012-09-18 Bridgestone Corporation Polymers functionalized with polyimine compounds
US7825201B2 (en) * 2007-12-31 2010-11-02 Bridgestone Corporation Process for producing polydienes
US7807763B2 (en) * 2008-04-07 2010-10-05 Bridgestone Corporation Method for bulk polymerization
US7906592B2 (en) 2008-07-03 2011-03-15 Bridgestone Corporation Polymers functionalized with imide compounds containing a protected amino group
BRPI0903440A2 (pt) * 2008-08-05 2010-06-01 Bridgestone Corp método para aperfeiçoar a resistência ao escoamento a frio de polìmeros
US8188195B2 (en) * 2008-12-31 2012-05-29 Bridgestone Corporation Polymers functionalized with nitroso compounds
WO2010085622A2 (en) 2009-01-23 2010-07-29 Bridgestone Corporation Polymers functionalized with nitrile compounds containing a protected amino group
ES2616272T3 (es) 2009-01-23 2017-06-12 Bridgestone Corporation Polímeros funcionalizados con compuestos de policiano
US7902309B2 (en) 2009-02-23 2011-03-08 Bridgestone Corporation Process and catalyst system for polydiene production
US8623975B2 (en) 2009-06-24 2014-01-07 Bridgestone Corporation Process for producing polydienes
US20110077325A1 (en) 2009-09-30 2011-03-31 Bridgestone Corporation Functionalized polymers and methods for their manufacture
US8338544B2 (en) 2009-12-21 2012-12-25 Bridgestone Corporation Polymers functionalized with polyoxime compounds and methods for their manufacture
US20120296041A1 (en) 2010-01-22 2012-11-22 Steven Luo Polymers functionalized with nitrile compounds containing a protected amino group
RU2437895C1 (ru) * 2010-06-21 2011-12-27 Открытое акционерное общество "Воронежский синтетический каучук" Способ получения модифицированного 1,4-цис полибутадиена
JP5699217B2 (ja) 2010-09-23 2015-04-08 株式会社ブリヂストン ポリジエンの生産方法
US8748531B2 (en) 2010-12-10 2014-06-10 Bridgestone Corporation Polymers functionalized with oxime compounds containing an acyl group
EP2670759B1 (en) 2011-02-05 2018-04-18 Bridgestone Corporation Lanthanide complex catalyst and polymerization method employing same
JP5956556B2 (ja) 2011-03-29 2016-07-27 株式会社ブリヂストン シリル化アミノ基を含有するカルボン酸またはチオカルボン酸エステルで官能化されたポリマー
EP2751142B1 (en) 2011-08-31 2015-12-09 Bridgestone Corporation Polymers functionalized with lactones or thiolactones containing a protected amino group
US8962766B2 (en) 2011-09-15 2015-02-24 Bridgestone Corporation Polymers functionalized with polyhydrazone compounds
WO2013075085A1 (en) 2011-11-17 2013-05-23 Bridgestone Corporation Process for producing polydienes
US9458270B2 (en) 2011-11-18 2016-10-04 Bridgestone Corporation Method for producing polydienes and polydiene copolymers with reduced cold flow
EP2788394B1 (en) 2011-12-09 2016-04-06 Bridgestone Corporation Method for producing polydienes and polydiene copolymers with reduced cold flow
RU2523799C1 (ru) 2011-12-20 2014-07-27 Чайна Петролеум Энд Кемикал Корпорейшн Добавка и способ для обрыва полимеризации и/или снижения вязкости раствора полимера
SG11201403581RA (en) 2011-12-31 2014-07-30 Bridgestone Corp Functionalized polymer
BR112014021261B1 (pt) 2012-02-27 2021-08-31 Bridgestone Corporation Processo para a preparação de polidienos alto-cis
KR101993024B1 (ko) 2012-03-14 2019-06-25 가부시키가이샤 브리지스톤 폴리디엔을 생산하는 방법
US9469706B2 (en) 2012-06-08 2016-10-18 Bridgestone Corporation Polymers functionalized with unsaturated heterocycles containing a protected amino group
US8952090B2 (en) 2012-06-08 2015-02-10 Bridgestone Corporation Method for producing polydienes and polydiene copolymers with reduced cold flow
US9115231B2 (en) 2012-07-26 2015-08-25 Bridgestone Corporation Polymers functionalized with protected hydrazone compounds containing an acyl group
EP2900702B1 (en) 2012-09-30 2018-05-02 Bridgestone Corporation Polymerization method employing an organometallic catalyst complex
US9127092B2 (en) 2012-12-31 2015-09-08 Bridgestone Corporation Method for producing polydienes and polydiene copolymers with reduced cold flow
US9663637B2 (en) 2012-12-31 2017-05-30 Bridgestone Corporation Polymers functionalized with unsaturated heterocycles containing an azolinyl group
US9315599B2 (en) 2013-01-02 2016-04-19 Bridgestone Corporation Functionalized polymers
KR102201542B1 (ko) 2013-03-15 2021-01-12 가부시키가이샤 브리지스톤 헤테로사이클릭 이민으로 작용화된 중합체
EP3052531B1 (en) 2013-10-02 2024-07-24 Bridgestone Corporation Polymers functionalized with imine compounds containing a cyano group
CN112048111B (zh) 2013-12-03 2022-12-02 株式会社普利司通 用于制备顺式-1,4-聚丁二烯和间同立构1,2-聚丁二烯的共混物的方法
US10030083B2 (en) 2014-05-15 2018-07-24 Bridgestone Corporation Polymers functionalized with protected oxime compounds containing a cyano group
RU2690373C2 (ru) 2014-05-31 2019-06-03 Бриджстоун Корпорейшн Металлокомплексный катализатор, способы полимеризации с его использованием и полученные полимерные продукты
WO2016057388A1 (en) 2014-10-07 2016-04-14 Bridgestone Corporation Method for producing polydienes and polydiene copolymers with reduced cold flow
JP6725134B2 (ja) 2014-10-10 2020-07-15 株式会社ブリヂストン 重合触媒組成物及びそれを用いる方法
JP2018505918A (ja) 2014-11-17 2018-03-01 株式会社ブリヂストン 予備成形触媒によるポリイソプレンのバルク重合
EP3250616B1 (en) 2015-01-28 2019-01-23 Bridgestone Corporation Aged lanthanide-based catalyst systems and their use in the preparation of cis-1,4-polydienes
EP3250617B1 (en) 2015-01-28 2019-01-02 Bridgestone Corporation Cis-1,4-polydienes with improved cold flow resistance
US9884928B2 (en) 2015-04-01 2018-02-06 Bridgestone Corporation Polymers functionalized with activated nitrogen heterocycles containing a pendant functional group
US9738738B2 (en) 2015-04-01 2017-08-22 Bridgestone Corporation Polymers functionalized with activated nitrogen heterocycles containing a pendant functional group
US10370460B1 (en) 2015-05-20 2019-08-06 Bridgestone Corporation Process for producing functionalized polymers
US10077323B2 (en) 2015-07-24 2018-09-18 Bridgestone Corporation Polymers functionalized with imine compounds containing a protected thiol group
US10202474B2 (en) 2015-09-11 2019-02-12 Bridgestone Corporation Process for producing polydienes
US20190185598A1 (en) 2016-05-19 2019-06-20 Bridgestone Corporation Process For Producing Functionalized Polymers
US11059920B2 (en) 2016-07-29 2021-07-13 Bridgestone Corporation Process for producing high cis-1,4-polydiene with lanthanide-based catalyst compositions
US10899718B2 (en) 2016-09-02 2021-01-26 Bridgestone Corporation Polymers functionalized with N-protected hydantoin compounds
JP6869333B2 (ja) 2016-09-02 2021-05-12 株式会社ブリヂストン ポリマーセメントのその場ヒドロシリル化により調製される複数のシラン官能基を有するシス−１，４−ポリジエンの製造
RU2720010C1 (ru) 2016-11-09 2020-04-23 Бриджстоун Корпорейшн Блок-сополимеры полибутадиена и полиизопрена с высоким содержанием цис-1,4-связей
US10730985B2 (en) 2016-12-19 2020-08-04 Bridgestone Corporation Functionalized polymer, process for preparing and rubber compositions containing the functionalized polymer
JP7019818B2 (ja) 2017-12-15 2022-02-15 株式会社ブリヂストン 官能化ポリマー、官能化ポリマーの調製プロセス、及び官能化ポリマーを含有するゴム組成物
EP3732210A4 (en) 2017-12-30 2021-08-11 Bridgestone Corporation COMPOSITION INCLUDING MULTIPLE POLYMERS WITH TERMINAL FUNCTIONALIZATION
WO2020130738A1 (ko) 2018-12-21 2020-06-25 주식회사 엘지화학 변성 공액디엔계 중합체 및 이의 제조방법
EP3938412B1 (en) 2019-03-10 2024-04-24 Bridgestone Corporation Modified high cis polydiene polymer, related methods and rubber compositions
EP4495146A3 (en) 2019-05-07 2025-04-09 Bridgestone Americas Tire Operations, LLC Modified high-cis polybutadiene polymer, related methods and rubber compositions
CN113825777B (zh) 2019-05-14 2025-01-28 株式会社普利司通 改性的高顺式聚丁二烯聚合物、相关方法和轮胎部件
US11584808B2 (en) 2019-12-30 2023-02-21 Bridgestone Corporation Polymerization catalyst composition and method of employing same
US12054573B2 (en) 2020-02-05 2024-08-06 Bridgestone Corporation Functionalized polymers having thermoresponsive behavior

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1495370A1 (de) * 1964-07-30 1969-04-03 Huels Chemische Werke Ag Verfahren zur definierten Erhoehung des Molekulargewichtes ungesaettigter,polymerer Kohlenwasserstoffe
US3704286A (en) * 1964-07-30 1972-11-28 Huels Chemische Werke Ag Production of unsaturated polymeric hydrocarbons having high mooney viscosities
IT1151542B (it) * 1982-04-15 1986-12-24 Anic Spa Procedimento per la polimerizzazione di diolefine coniugate e mezzi adatti allo scopo
IT1164238B (it) * 1983-05-25 1987-04-08 Anic Spa Procedimento per la polimerizzazione del butadiene
IT1191612B (it) * 1985-05-15 1988-03-23 Enichem Elastomers Procedimento migliorato per la polimerizzazione o copolimerizzazione del butadiene
IT1186747B (it) * 1985-07-01 1987-12-16 Enichem Elastomers Procedimento migliorato per la polimerizzazione o copolimerizzazione del butadiene

Also Published As

Publication number Publication date
DE69004712T2 (de) 1994-04-28
JPH02269704A (ja) 1990-11-05
DK0386808T3 (da) 1994-02-07
DE69004712D1 (de) 1994-01-05
CA2010284A1 (en) 1990-08-17
EP0386808A1 (en) 1990-09-12
JP2964256B2 (ja) 1999-10-18
ES2059984T3 (es) 1994-11-16
CA2010284C (en) 2000-05-16
EP0386808B1 (en) 1993-11-24
IT8919484A0 (it) 1989-02-17
US4990573A (en) 1991-02-05

Similar Documents

Publication Publication Date Title
IT1230756B (it) Metodo per la preparazione di polibutadiene a lavorabilita' migliorata.
MA21682A1 (fr) Procede de preparation d'agents therapeutiques derives de la quainclidine.
MA22481A1 (fr) Procede de preparation d'acides imidazolyl - alcenoiques .
MA22668A1 (fr) Procede de preparation d'oxamides .
IT8721266A0 (it) Metodo per la preparazione di un catalizzatore per l'ammossimazione di composti carbonilici.
FI891338A0 (fi) Parannus menetelmään 2',3'-dideoksi-2',3'-didehydronukleosidien valmistamiseksi
IT9020685A0 (it) metodo per l'automazione
FI903752A7 (fi) Menetelmä 1,2,3,4-tetrahydro-9-akridiiniamiinin johdannaisten valmistamiseksi
IT8423424A0 (it) Processo per la preparazione di (2,2)-paraciclofano.
IT1216560B (it) Procedimento per la preparazione di bis(2,2,6,6_tetrametil_4_piperidil)ammina.
FR2630735B1 (fr) Procede de preparations d'halogenophenols
IT8922246A0 (it) Procedimento di preparazione di 3-ciano-3,5,5'-trimetil-1-cicloesanone
IT8521464A0 (it) Metodo per la preparazione di 3,4-epossibutirrati alchilici.
FI904570A7 (fi) Menetelmä uusien alkanofenonien valmistamiseksi I
IT9067657A1 (it) Procedimento per la preparazione di alfa-alchil-lattoni.
GB2218453B (en) "method of construction."
IT1208537B (it) Processo per la preparazione dell'isosorbide-5-monoidrato.
FI906009A7 (fi) Menetelmä des(64,65)-proinsuliinin valmistamiseksi
FI930237A7 (fi) Menetelmä 4,6-dialkoksipyrimidiinien valmistamiseksi
FR2630741B1 (fr) Procede de preparation d'acryloyloxyethoxymethyl-melamines
FI901316A7 (fi) Menetelmä 4(5)-imidatsolien valmistamiseksi
FI871368A7 (fi) Menetelmä 2,3,4,5-tetrafluori -bentsoyyliasetaattien valmistamiseksi.
IT8920747A0 (it) Procedimento per la preparazione di metil 3 amminocrotonato.
FI902157A7 (fi) Menetelmä 1,6-hekseenidiohappojen valmistamiseksi
FR2653518B1 (fr) Garniture d'etancheite.

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970218