BE680954A - - Google Patents

Info

Publication number
BE680954A
BE680954A BE680954DA BE680954A BE 680954 A BE680954 A BE 680954A BE 680954D A BE680954D A BE 680954DA BE 680954 A BE680954 A BE 680954A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE680954A publication Critical patent/BE680954A/xx

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
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/02—Ethene
    • 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
    • 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
    • Y10S526/902—Monomer polymerized in bulk in presence of transition metal containing catalyst
    • 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
    • Y10S526/905—Polymerization in presence of transition metal containing catalyst in presence of hydrogen
    • 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
    • Y10S526/912—Reaction medium purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
BE680954D 1965-05-14 1966-05-12 BE680954A (https=)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US455941A US3324101A (en) 1965-05-14 1965-05-14 Olefin polymerization process and catalyst therefor
US455975A US3324095A (en) 1965-05-14 1965-05-14 Polymerization process

Publications (1)

Publication Number Publication Date
BE680954A true BE680954A (https=) 1966-11-14

Family

ID=27038028

Family Applications (1)

Application Number Title Priority Date Filing Date
BE680954D BE680954A (https=) 1965-05-14 1966-05-12

Country Status (7)

Country Link
US (2) US3324101A (https=)
BE (1) BE680954A (https=)
DE (1) DE1645585C2 (https=)
DK (1) DK130722B (https=)
GB (1) GB1146145A (https=)
NL (2) NL6606632A (https=)
SE (1) SE388863B (https=)

Families Citing this family (112)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3513150A (en) * 1965-11-23 1970-05-19 Mitsubishi Chem Ind Method of manufacturing polyethylene
US3513151A (en) * 1965-12-27 1970-05-19 Owens Illinois Inc Reaction product of metal oxides and hydrocarbylcyclosiloxanes and method of polymerization using same
US3474080A (en) * 1966-06-27 1969-10-21 Nat Distillers Chem Corp Catalytic process for olefin polymerization
US3493554A (en) * 1966-06-27 1970-02-03 Nat Distillers Chem Corp Olefin polymerization process employing a chromate catalyst
US3468865A (en) * 1966-12-23 1969-09-23 Owens Illinois Inc Polymerization and catalysts
US3535297A (en) * 1968-02-14 1970-10-20 Union Carbide Corp Polymerization of ethylene using supported activated chromyl chloride catalysts
DE1926346C3 (de) * 1968-05-25 1985-04-25 Mitsubishi Chemical Industries Ltd., Tokio/Tokyo Verfahren zur Polymerisation von Äthylen oder einer Äthylen/Propylen-Mischung
US3839313A (en) * 1968-10-09 1974-10-01 Montedison Spa Catalysts for the polymerization of olefins
CA995396A (en) * 1971-03-18 1976-08-17 Robert N. Johnson Catalyst modified with strong reducing agent and silane compounds and use in polymerization of olefins
FR2207145B1 (https=) * 1972-11-17 1975-09-12 Naphtachimie Sa
US3876554A (en) * 1973-11-08 1975-04-08 Chemplex Co Organotin chromate polymerization catalyst
US4020092A (en) * 1973-11-08 1977-04-26 Chemplex Company Compounds bis(tributyltin)chromate and bis(triphenyltin)chromate
US3884832A (en) * 1974-02-04 1975-05-20 Chemplex Co Organotin chromate polymerization catalyst
SE392112B (sv) * 1974-04-19 1977-03-14 Unifos Kemi Ab Lagtryckspolyetenkomposition innehallande fosfonsyraderivat
US4053435A (en) * 1975-03-12 1977-10-11 Gulf Research & Development Company Catalysts for the polymerization of ethylene
US4192775A (en) * 1975-03-14 1980-03-11 National Petro Chemicals Corporation Olefin polymerization catalyst
US3984351A (en) * 1975-03-14 1976-10-05 National Petro Chemicals Corporation Olefin polymerization catalyst
US4031298A (en) * 1975-06-30 1977-06-21 Chemplex Company Polymerization catalyst and method
IT1039828B (it) * 1975-07-09 1979-12-10 Montedison Spa Componenti di catalizzatori perla polimerizzazione di olefine e catalizzatori da essi ottenuti
US3956257A (en) * 1975-08-14 1976-05-11 Phillips Petroleum Company Hydrocarbylaluminum hydrocarbyloxide antifouling agent in olefin polymerization process
US4053437A (en) * 1976-03-04 1977-10-11 Chemplex Company Polyolefin catalyst and method for its preparation
US4065612A (en) * 1976-03-30 1977-12-27 Union Carbide Corporation Phenol modified polymerization catalyst and polymerization process
US4100105A (en) * 1977-01-21 1978-07-11 Union Carbide Corporation Titanium-modified silyl chromate catalysts for ethylene polymerization
DE2802763A1 (de) * 1978-01-23 1979-07-26 Hoechst Ag Verfahren zur herstellung eines katalysators
US4297461A (en) * 1979-06-08 1981-10-27 National Petro Chemicals Corp. Olefin polymerization catalyst
US4260706A (en) * 1979-06-21 1981-04-07 National Petro Chemicals Corp. Olefin polymerization catalyst
US4460755A (en) * 1982-09-30 1984-07-17 Union Carbide Corporation Direct conversion of a polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst
US4806513A (en) * 1984-05-29 1989-02-21 Phillips Petroleum Company Silicon and fluorine-treated alumina containing a chromium catalyst and method of producing same
US4540757A (en) * 1984-10-01 1985-09-10 Phillips Petroleum Company Polymerization and catalyst
US4560733A (en) * 1984-10-01 1985-12-24 Phillips Petroleum Company Polymerization and catalyst
US4803251A (en) 1987-11-04 1989-02-07 Union Carbide Corporation Method for reducing sheeting during polymerization of alpha-olefins
CA2020509C (en) * 1989-08-10 1998-04-28 William K. Reagen Chromium compounds and uses thereof
US5034364A (en) * 1989-11-09 1991-07-23 Mobil Oil Corporation Multiple chromium compound-containing catalyst composition and olefin polymerization therewith
FI902123A7 (fi) * 1990-04-26 1991-10-27 Borealis Holding As Siirtymämetallipohjainen katalyytti olefiinien polymeroimiseksi ja kopolymeroimiseksi, sen valmistus ja käyttö
US5137994A (en) * 1991-05-23 1992-08-11 Union Carbide Chemicals & Plastics Technology Corporation Process for the simultaneous trimerization and copolymerization of ethylene
US5443874A (en) * 1993-05-24 1995-08-22 Mitsubishi Petrochemical Co., Ltd. Hollow multi-layer molding
KR20010101320A (ko) 1998-12-29 2001-11-14 추후보정 개선된 크로메이트 에스테르 촉매 및 이를 이용한 고성능폴리에틸렌 산물의 생산방법
CZ288056B6 (cs) * 1999-04-08 2001-04-11 Polymer Institute Brno, Spol. S R. O. Způsob přípravy kopolymerů ethylenu vhodných pro výrobu fólií nebo trubek
ES2399364T3 (es) 2002-10-02 2013-03-27 Dow Global Technologies Llc Composiciones poliméricas que comprenden un extendedor de etileno/alfa-olefina homogéneamente ramificado, de baja viscosidad
US6989344B2 (en) * 2002-12-27 2006-01-24 Univation Technologies, Llc Supported chromium oxide catalyst for the production of broad molecular weight polyethylene
US20100291334A1 (en) * 2002-12-27 2010-11-18 Univation Technologies, Llc Broad Molecular Weight Polyethylene Having Improved Properties
US20040167015A1 (en) * 2003-02-26 2004-08-26 Cann Kevin J. Production of broad molecular weight polyethylene
BRPI0409019B1 (pt) 2003-03-28 2014-09-02 Univation Tech Llc Processo para produzir polietileno com catalisadores baseados em cromo
US6982304B2 (en) * 2003-12-22 2006-01-03 Union Carbide Chemicals & Plastics Technology Corporation Blow molding resins with improved ESCR
US7151073B2 (en) * 2004-01-16 2006-12-19 Exxonmobil Chemical Patents Inc. Mesoporous catalyst support, a catalyst system, and method of making and using same for olefin polymerization
WO2006107373A1 (en) * 2005-03-31 2006-10-12 Exxonmobil Chemical Patents Inc. Processes for producing high density polyethylene
WO2007112919A1 (en) * 2006-03-31 2007-10-11 Saudi Basic Industries Corporation A process for the preparation of a silylchromate catalyst
WO2010074994A1 (en) 2008-12-22 2010-07-01 Univation Technologies, Llc Systems and methods for fabricating polymers
EP2361268B1 (en) 2008-12-22 2012-11-07 Univation Technologies, LLC Systems and methods for fabricating polymers
US20110256632A1 (en) 2009-01-08 2011-10-20 Univation Technologies, Llc Additive for Polyolefin Polymerization Processes
WO2010080871A1 (en) 2009-01-08 2010-07-15 Univation Technologies, Llc Additive for gas phase polymerization processes
WO2011006111A1 (en) * 2009-07-09 2011-01-13 Union Carbide Chemicals & Plastics Technology Llc Enhanced condensed mode operation in method of producing polyofefins with chromium based catalysts
BR112012013675A2 (pt) 2009-12-07 2016-04-19 Univation Tech Llc métodos para a produção de carga estática de um catalisador e métodos para o uso do catalisador para produzir poliolefinas
CN102453154B (zh) * 2010-10-22 2013-07-24 中国石油化工股份有限公司 乙烯聚合用有机铬催化剂及其制备方法
CN102627710B (zh) * 2012-04-16 2017-12-29 华东理工大学 一种负载型双中心复合聚乙烯催化剂的制备方法和应用
EP2935352B1 (en) 2012-12-19 2020-08-26 Saudi Basic Industries Corporation Polymerisation of ethylene in the presence of a silylchromate based catalyst.
JP2017502104A (ja) 2013-11-21 2017-01-19 ユニベーション・テクノロジーズ・エルエルシー ポリマー特性を制御するための方法
CN106164107A (zh) 2013-11-28 2016-11-23 沙特基础工业公司 包含金属卤化物改性无机氧化物载体的铬系催化剂组分
US9914794B2 (en) 2014-05-27 2018-03-13 Sabic Global Technologies B.V. Process for transitioning between incompatible catalysts
WO2016036737A1 (en) 2014-09-02 2016-03-10 Univation Technologies, Llc Polyolefin production with chromium-based catalysts
SG11201701437PA (en) 2014-09-02 2017-03-30 Univation Tech Llc Polyolefin production with chromium-based catalysts
EP3831479B1 (en) 2014-09-02 2025-07-16 Univation Technologies, LLC Polyolefin production with chromium-based catalysts
CN107001506A (zh) 2014-11-24 2017-08-01 尤尼威蒂恩技术有限责任公司 包含颗粒的组合物
US10266618B2 (en) 2014-11-24 2019-04-23 Univation Technologies, Llc Chromium-based catalyst compositions for olefin polymerization
EP3292171B1 (en) 2015-05-05 2020-09-23 SABIC Global Technologies B.V. Compositions for automotive interior parts
EP3313901B1 (en) 2015-06-23 2019-04-10 SABIC Global Technologies B.V. Polymerisation of ethylene in the presence of a silylchromate based catalyst
CA3012453C (en) 2016-01-29 2023-10-24 Univation Technologies, Llc. Polyolefin film with improved toughness
CA3021386A1 (en) 2016-04-20 2017-10-26 Univation Technologies, Llc Polymer flow index modifier
BR112019008131B1 (pt) 2016-11-08 2022-12-20 Univation Technologies, Llc Polietileno bimodal
CN109890855B (zh) 2016-11-08 2022-08-09 尤尼威蒂恩技术有限责任公司 聚乙烯组合物
CA3043015A1 (en) 2016-11-08 2018-05-17 Univation Technologies, Llc Polyethylene composition
CN109963883B (zh) 2016-11-28 2023-02-03 尤尼威蒂恩技术有限责任公司 生产聚乙烯聚合物
CN109983035B (zh) 2016-12-15 2022-02-11 尤尼威蒂恩技术有限责任公司 对聚合工艺进行评定
CN111051353B (zh) 2017-08-28 2022-09-09 尤尼威蒂恩技术有限责任公司 双峰聚乙烯
CA3074827A1 (en) 2017-09-11 2019-03-14 Univation Technologies, Llc Carbon black-containing bimodal polyethylene composition
CN111868114B (zh) 2017-10-27 2023-04-14 尤尼威蒂恩技术有限责任公司 选择性地转变聚合过程
SG11202003356WA (en) 2017-10-27 2020-05-28 Univation Tech Llc Polyethylene copolymer resins and films
WO2019112929A1 (en) 2017-12-05 2019-06-13 Univation Technologies, Llc Modified spray-dried ziegler-natta (pro)catalyst systems
ES2970016T3 (es) 2017-12-05 2024-05-23 Univation Tech Llc Sistema catalizador de ziegler-natta activado secado mediante pulverización
SG11202005184XA (en) 2017-12-18 2020-07-29 Dow Global Technologies Llc Zirconocene-titanocene catalyst system
BR112020010103B1 (pt) 2017-12-18 2024-01-02 Dow Global Technologies Llc Sistema de catalisador de hafnoceno-titanoceno, método para fazer o sistema de catalisador de hafnocenotitanoceno e método para fazer uma composição de polietileno
WO2019190897A1 (en) 2018-03-26 2019-10-03 Dow Global Technologies Llc Spray-dried zirconocene catalyst system
CN111836838B (zh) 2018-03-28 2023-05-05 尤尼威蒂恩技术有限责任公司 多峰聚乙烯组合物
CA3037503A1 (en) 2018-04-26 2019-10-26 Nova Chemicals Corporation Phosphinimine amido-ether complexes
US12173096B2 (en) 2018-05-24 2024-12-24 Univation Technologies, Llc Unimodal polyethylene copolymer and film thereof
CN112166128B (zh) 2018-06-12 2023-06-06 陶氏环球技术有限责任公司 活化剂-成核剂配制物
US11248066B2 (en) 2018-06-13 2022-02-15 Univation Technologies, Llc Spray-dried Ziegler-Natta (pro)catalyst systems
WO2020028220A1 (en) 2018-07-31 2020-02-06 Univation Technologies, Llc Unimodal polyethylene copolymer and film thereof
WO2020028229A1 (en) 2018-07-31 2020-02-06 Univation Technologies, Llc Unimodal polyethylene copolymer and film thereof
CN109438593B (zh) * 2018-11-26 2020-09-22 上海化工研究院有限公司 一种生产超高分子量聚烯烃用催化剂及其制备方法和应用
EP3715385B1 (en) 2019-03-26 2024-01-31 SABIC Global Technologies B.V. Chromium oxide catalyst for ethylene polymerization
SG11202113216TA (en) 2019-06-10 2021-12-30 Univation Tech Llc Polyethylene blend
WO2021056284A1 (en) 2019-09-25 2021-04-01 Lenovo (Beijing) Limited Method and apparatus for buffer status report transmissions
US12319759B2 (en) 2020-04-01 2025-06-03 Dow Global Technologies Llc Bimodal linear low density polyethylene copolymer
WO2021214612A1 (en) 2020-04-21 2021-10-28 Nova Chemicals (International) S.A. Cyclopentadienyl/adamantyl phosphinimine zirconium and hafnium complexes
WO2021214629A1 (en) 2020-04-21 2021-10-28 Nova Chemicals (International) S.A. Cyclopentadienyl/adamantyl phosphinimine titanium complexes
US20230312894A1 (en) 2020-09-30 2023-10-05 Univation Technologies, Llc Bimodal polyethylene copolymers for pe-80 pipe applications
MX2024000061A (es) 2021-06-22 2024-02-23 Equistar Chem Lp Procesos y productos de reciclado de polimero.
EP4565647A1 (en) 2022-08-04 2025-06-11 Equistar Chemicals, LP Polyethylene recyclate blend products
WO2024132273A1 (en) 2022-12-20 2024-06-27 Sabic Global Technologies B.V. Catalyst for polyethylene polymerization
EP4638531A1 (en) 2022-12-20 2025-10-29 SABIC Global Technologies B.V. Process for the production of polyethylene
CN121311488A (zh) 2023-06-08 2026-01-09 陶氏环球技术有限责任公司 包含取代的2-羟基噻吩化合物的负载型烯烃聚合催化剂
KR20260021013A (ko) 2023-06-08 2026-02-12 다우 글로벌 테크놀로지스 엘엘씨 치환된 2-히드록시티오펜 화합물을 포함하는 담지 올레핀 중합 촉매
WO2024253862A1 (en) 2023-06-08 2024-12-12 Dow Global Technologies Llc Supported olefin polymerization catalysts comprising substituted 2-hydroxythiophene compounds
WO2024253864A1 (en) 2023-06-08 2024-12-12 Dow Global Technologies Llc Supported olefin polymerization catalysts comprising substituted 2-hydroxythiophene compounds
WO2024253859A1 (en) 2023-06-08 2024-12-12 Dow Global Technologies Llc Supported olefin polymerization catalysts comprising substituted 2-hydroxythiophene compounds
CN121285561A (zh) 2023-06-08 2026-01-06 陶氏环球技术有限责任公司 包含取代的2-羟基噻吩化合物的负载型烯烃聚合催化剂
EP4735522A1 (en) 2023-06-27 2026-05-06 Equistar Chemicals, LP Polymer recyclate blend product and process
CN119264188A (zh) * 2023-07-04 2025-01-07 中国石油天然气股份有限公司 铬系化合物及其制备方法与应用、苄醇类化合物催化氧化的方法
WO2025165750A1 (en) 2024-01-29 2025-08-07 Equistar Chemicals, Lp Polyethylene recyclate blend products
WO2025250643A1 (en) 2024-05-30 2025-12-04 Equistar Chemicals, Lp Polymer recyclate blends and products
WO2026024857A1 (en) 2024-07-24 2026-01-29 Equistar Chemicals, Lp Polyethylene blend for caps and closures

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE637740A (https=) *
US2863891A (en) * 1955-03-18 1958-12-09 Little Inc A Metal organo-silyl esters
US2882264A (en) * 1955-10-10 1959-04-14 Dow Chemical Co Polymerization of ethylene
US2981725A (en) * 1955-11-16 1961-04-25 Shell Oil Co Process for polymerizing olefins
US2898328A (en) * 1956-07-10 1959-08-04 Ici Ltd Polymerisation of olefins
NL103354C (https=) * 1957-06-28
NL109640C (https=) * 1959-01-27
US2994711A (en) * 1959-08-10 1961-08-01 Nat Distillers Chem Corp Triorganosiloxymetal oxides
US3046268A (en) * 1959-09-22 1962-07-24 Nat Distillers Chem Corp Catalytic process for polymerizaing ethylenically unsaturated hydrocarbons
US3046267A (en) * 1959-09-22 1962-07-24 Nat Distillers Chem Corp Catalytic process for polymerizing ethylenically unsaturated hydrocarbons
NL128841C (https=) * 1963-06-21

Also Published As

Publication number Publication date
NL6606632A (https=) 1966-11-15
DK130722C (https=) 1975-09-01
SE388863B (sv) 1976-10-18
DK130722B (da) 1975-04-01
US3324095A (en) 1967-06-06
DE1645585A1 (de) 1970-07-09
US3324101A (en) 1967-06-06
DE1645585C2 (de) 1983-05-11
NL135065C (https=)
GB1146145A (en) 1969-03-19

Similar Documents

Publication Publication Date Title
DK130722C (https=)
DK133455C (https=)
JPS4328354B1 (https=)
FR1562311A (https=)
JPS459098Y1 (https=)
JPS4410448Y1 (https=)
JPS4121980Y1 (https=)
JPS4316537Y1 (https=)
JPS4217379Y1 (https=)
FR1562752A (https=)
JPS4733255Y1 (https=)
JPS4216196Y1 (https=)
JPS4621373Y1 (https=)
JPS42313Y1 (https=)
BE675645A (https=)
BE671250A (https=)
NL6602639A (https=)
BE682709A (https=)
BE680855A (https=)
BE675701A (https=)
BE675664A (https=)
BE675655A (https=)
NL6615358A (https=)
BE675610A (https=)
BE675600A (https=)

Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: UNION CARBIDE CORP.

Effective date: 19860512