CS228511B2 - Catalyst and its production method - Google Patents
Catalyst and its production method Download PDFInfo
- Publication number
- CS228511B2 CS228511B2 CS814944A CS494481A CS228511B2 CS 228511 B2 CS228511 B2 CS 228511B2 CS 814944 A CS814944 A CS 814944A CS 494481 A CS494481 A CS 494481A CS 228511 B2 CS228511 B2 CS 228511B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- compound
- precursor
- particle size
- aliphatic
- catalyst
- Prior art date
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
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/52—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides selected from boron, aluminium, gallium, indium, thallium or rare earths
-
- 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
-
- 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
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/50—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides selected from alkaline earth metals, zinc, cadmium, mercury, copper or silver
-
- 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
- C08F2410/00—Features related to the catalyst preparation, the catalyst use or to the deactivation of the catalyst
- C08F2410/06—Catalyst characterized by its size
-
- 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
- Y10S526/901—Monomer polymerized in vapor state 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
- Y10S526/908—Containing catalyst of specified particle size
-
- 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
- Y10S526/909—Polymerization characterized by particle size of product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (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)
- Catalysts (AREA)
- Silicon Compounds (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Glass Compositions (AREA)
- Air Bags (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Inorganic Insulating Materials (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/163,959 US4405495A (en) | 1980-06-30 | 1980-06-30 | Catalyst impregnated on fine silica, process for preparing, and use for ethylene polymerization |
Publications (1)
Publication Number | Publication Date |
---|---|
CS228511B2 true CS228511B2 (en) | 1984-05-14 |
Family
ID=22592372
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CS814944A CS228511B2 (en) | 1980-06-30 | 1981-06-29 | Catalyst and its production method |
CS823251A CS232723B2 (en) | 1980-06-30 | 1981-06-29 | Method of ethylene copolymer catalytic production |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CS823251A CS232723B2 (en) | 1980-06-30 | 1981-06-29 | Method of ethylene copolymer catalytic production |
Country Status (27)
Country | Link |
---|---|
US (2) | US4405495A (de) |
EP (1) | EP0043220B1 (de) |
JP (1) | JPS6050367B2 (de) |
KR (2) | KR840001785B1 (de) |
AT (1) | ATE18769T1 (de) |
AU (1) | AU540181B2 (de) |
BR (1) | BR8104037A (de) |
CA (1) | CA1171844A (de) |
CS (2) | CS228511B2 (de) |
DD (2) | DD160520A5 (de) |
DE (1) | DE3174173D1 (de) |
DK (1) | DK288081A (de) |
EG (1) | EG15793A (de) |
ES (2) | ES503478A0 (de) |
FI (1) | FI70417C (de) |
GR (1) | GR75713B (de) |
IE (1) | IE52782B1 (de) |
IL (1) | IL63155A (de) |
IN (2) | IN154420B (de) |
MA (1) | MA19185A1 (de) |
MX (1) | MX158563A (de) |
NO (1) | NO160714C (de) |
NZ (1) | NZ197460A (de) |
PH (1) | PH19877A (de) |
SU (1) | SU1295996A3 (de) |
TR (1) | TR21555A (de) |
ZA (1) | ZA814068B (de) |
Families Citing this family (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58189208A (ja) * | 1982-04-30 | 1983-11-04 | Japan Synthetic Rubber Co Ltd | 重合体の製造方法 |
DE3366573D1 (en) * | 1982-06-24 | 1986-11-06 | Bp Chimie Sa | Process for the polymerization and copolymerization of alpha-olefins in a fluidized bed |
JPH0629287B2 (ja) * | 1984-03-14 | 1994-04-20 | 三菱油化株式会社 | オレフィン重合用触媒成分 |
IT1178466B (it) | 1984-03-20 | 1987-09-09 | Montedison Spa | Catalizzatori per la omo e copolimerizzazione dell'etilene e polimeri ottenuti |
JPS61110981U (de) * | 1984-12-21 | 1986-07-14 | ||
US4760121A (en) * | 1986-01-03 | 1988-07-26 | Mobil Oil Corporation | Preparation of alpha-olefin polymers of relatively narrow molecular weight distrbution |
DE3634915A1 (de) * | 1986-10-14 | 1988-04-28 | Basf Ag | Verfahren zum herstellen von homo- und copolymerisaten des ethylens mittels eines ziegler-katalysatorsystems |
JPS63122710A (ja) * | 1986-11-12 | 1988-05-26 | Nippon Petrochem Co Ltd | ポリオレフインの製造方法 |
US5273809A (en) * | 1987-04-17 | 1993-12-28 | Mobil Oil Corporation | Multilayer stretch wrap film inherently exhibiting a significant cling property |
US5617707A (en) * | 1987-04-17 | 1997-04-08 | Mobil Oil Corporation | Stretch wrap film inherently exhibiting a significant cling property |
DE3815486A1 (de) * | 1988-05-06 | 1989-11-16 | Basf Ag | Katalysator fuer die polymerisation von ethylen, verfahren zu dessen herstellung und verwendung der erhaltenen ethylenpolymerisate zur herstellung von folien mit geringen blockeigenschaften |
US5192731A (en) * | 1988-05-13 | 1993-03-09 | Mitsui Petrochemical Industries, Ltd. | Titanium catalyst components, process for preparing same, catalysts containing same for preparing ethylene polymers and process for preparing said ethylene polymers |
EP0408750B1 (de) * | 1988-05-13 | 2000-03-01 | Mitsui Chemicals, Inc. | Titan katalysatorkomponente, verfahren zur deren herstellung, katalysator zur herstellung von einem aethylenpolymer das dieser katalysator aufweist und verfahren zur herstellung eines aethylenpolymers |
US4876229A (en) * | 1988-05-31 | 1989-10-24 | Mobil Oil Corporation | Catalyst composition for polymerizing olefins of narrow molecular weight distribution and polymerization therewith |
US4983694A (en) * | 1988-05-31 | 1991-01-08 | Mobil Oil Corporation | Process for polymerizing olefins to form polymers of narrow molecular weight distribution |
DE69025964T2 (de) * | 1989-01-21 | 1996-08-08 | Mitsubishi Petrochemical Co | Verfahren zur Herstellung von Ethylencopolymeren |
US6025448A (en) * | 1989-08-31 | 2000-02-15 | The Dow Chemical Company | Gas phase polymerization of olefins |
US5763547A (en) * | 1992-10-02 | 1998-06-09 | The Dow Chemical Company | Supported catalyst complexes for olefin in polymerization |
IT1240613B (it) * | 1990-03-26 | 1993-12-17 | Enichem Anic Spa | Catalizzatore supportato per la polimerizzazione e la copolimerizzazione di composti olefinicamente insaturi, e procedimento di (co) polimerizzazione impiegante lo stesso |
US6538080B1 (en) | 1990-07-03 | 2003-03-25 | Bp Chemicals Limited | Gas phase polymerization of olefins |
FI86989C (fi) * | 1990-12-19 | 1992-11-10 | Neste Oy | Foerfarande foer framstaellning av en polymerisationskatalysatorkomponent foer olefiner, en polymerisationskatalysatorkomponent som har framstaellts enligt foerfarandet, och dess anvaendning |
PT100069A (pt) * | 1991-01-30 | 1993-05-31 | Union Carbide Chem Plastic | Processo para reducao do teor de substancias extraiveis por meio de hexano presente nos copolimeros de etileno |
FI92405C (fi) | 1992-12-22 | 1994-11-10 | Borealis Holding As | Uusi olefiinipolymerointikatalyytti, menetelmä sen valmistamiseksi ja sen käyttö olefiinien polymerointiin |
US5264506A (en) * | 1992-12-30 | 1993-11-23 | Union Carbide Chemicals & Plastics Technology Corporation | Process for producing sticky polymers |
ES2119382T3 (es) * | 1993-12-08 | 1998-10-01 | Dow Chemical Co | Pelicula estirable adherente y metodo de fabricacion. |
US5461123A (en) | 1994-07-14 | 1995-10-24 | Union Carbide Chemicals & Plastics Technology Corporation | Gas phase fluidized bed polyolefin polymerization process using sound waves |
US5428118A (en) | 1994-07-15 | 1995-06-27 | Union Carbide Chemicals & Plastics Technology Corporation | Gas phase fluidized bed polyolefin polymerization process using gas or gas-solids tangential flow |
US5661097A (en) * | 1994-08-12 | 1997-08-26 | The Dow Chemical Company | Supported olefin polymerization catalyst |
EP0713889A2 (de) * | 1994-11-23 | 1996-05-29 | Union Carbide Chemicals & Plastics Technology Corporation | In-Situ-Polyethylenmischung |
US5589539A (en) * | 1994-11-23 | 1996-12-31 | Union Carbide Chemicals & Plastics Technology Corporation | Process for preparing an in situ polyethylene blend |
US5681908A (en) * | 1995-03-03 | 1997-10-28 | Advanced Extraction Technologies, Inc. | Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes |
US5521264A (en) * | 1995-03-03 | 1996-05-28 | Advanced Extraction Technologies, Inc. | Gas phase olefin polymerization process with recovery of monomers from reactor vent gas by absorption |
KR970015606A (ko) * | 1995-09-01 | 1997-04-28 | 윤덕용 | 폴리올레핀 중합용 메탈로센 담지촉매의 제조방법 |
EP0771820A1 (de) * | 1995-11-03 | 1997-05-07 | Union Carbide Chemicals & Plastics Technology Corporation | Ziegler-Natta geträgerte Katalysatore für Polyolefin-Herstellung |
US6187883B1 (en) * | 1996-08-23 | 2001-02-13 | Sumitomo Chemical Company, Limited | Solid catalyst component for α-olefin polymerization, catalyst for α-olefin polymerization, and process for producing α-olefin polymer |
US6242545B1 (en) * | 1997-12-08 | 2001-06-05 | Univation Technologies | Polymerization catalyst systems comprising substituted hafinocenes |
US8497330B2 (en) * | 1997-12-08 | 2013-07-30 | Univation Technologies, Llc | Methods for polymerization using spray dried and slurried catalyst |
US20060293470A1 (en) * | 2005-06-28 | 2006-12-28 | Cao Phuong A | Polymerization process using spray-dried catalyst |
US6140264A (en) * | 1998-05-12 | 2000-10-31 | Nova Chemicals Ltd. | Split aluminum addition process for making catalyst |
JP2002265507A (ja) | 2001-03-09 | 2002-09-18 | Sumitomo Chem Co Ltd | オレフィンの気相流動床式重合反応におけるシーティング防止 |
EP1611169B1 (de) | 2003-03-21 | 2010-06-02 | Dow Global Technologies Inc. | Verfahren zur herstellung von polyolefinen mit kontrollierter morphologie |
US6953764B2 (en) | 2003-05-02 | 2005-10-11 | Dow Global Technologies Inc. | High activity olefin polymerization catalyst and process |
KR101167538B1 (ko) * | 2003-05-29 | 2012-07-20 | 바셀 폴리올레핀 이탈리아 에스.알.엘 | 촉매 성분의 제조 방법 및 그로부터 수득된 성분들 |
US7754830B2 (en) | 2004-05-20 | 2010-07-13 | Univation Technologies, Llc | Polymerization reaction monitoring with determination of induced condensing agent concentration for preventing discontinuity events |
US7683140B2 (en) * | 2004-05-20 | 2010-03-23 | Univation Technologies, Llc | Method for determining temperature value indicative of resin stickiness from data generated by polymerization reaction monitoring |
US7071137B2 (en) * | 2004-08-25 | 2006-07-04 | Novolen Technology Holdings, C.V. | Method of making a ziegler-natta catalyst |
US20060281879A1 (en) * | 2005-06-13 | 2006-12-14 | Univation Technologies, Llc | Catalyst compositions comprising small silica support materials and methods of use in polymerization reactions |
US20070049711A1 (en) | 2005-09-01 | 2007-03-01 | Chi-I Kuo | Catalyst compositions comprising support materials having an improved particle-size distribution |
EP1803747A1 (de) | 2005-12-30 | 2007-07-04 | Borealis Technology Oy | Oberflächemodifizierte Polymerisationskatalysatoren zur Herstellung von Polyolefinfilmen mit niedrigem Gelgehalt |
CA2653103A1 (en) | 2006-05-05 | 2007-11-15 | Dow Global Technologies Inc. | Hafnium complexes of carbazolyl substituted imidazole ligands |
RU2446175C2 (ru) * | 2006-09-07 | 2012-03-27 | Юнивейшн Текнолоджиз, Ллк | Способы определения значения температуры, характеризующие липкость смолы, на основе данных мониторинга реакции полимеризации |
CA2662793A1 (en) * | 2006-09-07 | 2008-03-13 | Univation Technologies, Llc | Methods for on-line determination of degree of resin stickiness using a model for depression of melt initiation temperature |
SG184469A1 (en) * | 2010-04-05 | 2012-11-29 | Dow Global Technologies Llc | Process for polymerizing olefin-based polymers containing high molecular weight fractions in condensed and super-condensed mode |
CN107660216B (zh) | 2015-05-08 | 2021-05-14 | 埃克森美孚化学专利公司 | 聚合方法 |
JP6743463B2 (ja) | 2016-04-12 | 2020-08-19 | 住友化学株式会社 | ポリオレフィンの製造方法 |
WO2018063767A1 (en) | 2016-09-27 | 2018-04-05 | Exxonmobil Chemical Patents Inc. | Polymerization process |
WO2018063765A1 (en) | 2016-09-27 | 2018-04-05 | Exxonmobil Chemical Patents Inc. | Polymerization process |
WO2018063764A1 (en) | 2016-09-27 | 2018-04-05 | Exxonmobil Chemical Patents Inc. | Polymerization process |
WO2018098425A1 (en) | 2016-11-28 | 2018-05-31 | Univation Technologies, Llc | Producing a polyethylene polymer |
WO2018118155A1 (en) | 2016-12-20 | 2018-06-28 | Exxonmobil Chemical Patents Inc. | Polymerization process |
BR112019022083A2 (pt) * | 2017-05-18 | 2020-05-05 | Basell Poliolefine Italia Srl | componentes catalisadores para a polimerização de olefinas |
WO2019118073A1 (en) | 2017-12-13 | 2019-06-20 | Exxonmobil Chemical Patents Inc. | Deactivation methods for active components from gas phase polyolefin polymerization process |
WO2019173030A1 (en) | 2018-03-08 | 2019-09-12 | Exxonmobil Chemical Patents Inc. | Methods of preparing and monitoring a seed bed for polymerization reactor startup |
US11459408B2 (en) | 2018-05-02 | 2022-10-04 | Exxonmobil Chemical Patents Inc. | Methods for scale-up from a pilot plant to a larger production facility |
US11447587B2 (en) | 2018-05-02 | 2022-09-20 | Exxonmobil Chemical Patents Inc. | Methods for scale-up from a pilot plant to a larger production facility |
BR112022008816A2 (pt) | 2019-11-20 | 2022-07-26 | Basell Poliolefine Italia Srl | Processo para preparar um componente catalisador |
US11124586B1 (en) | 2020-11-09 | 2021-09-21 | Chevron Phillips Chemical Company Lp | Particle size control of metallocene catalyst systems in loop slurry polymerization reactors |
CN116438206B (zh) | 2020-12-08 | 2024-03-12 | 切弗朗菲利浦化学公司 | 环流淤浆聚合反应器中负载型铬催化剂的粒度控制 |
US11801502B2 (en) | 2021-09-13 | 2023-10-31 | Chevron Phillips Chemical Company Lp | Hydrocyclone modification of catalyst system components for use in olefin polymerization |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3094568A (en) * | 1959-12-01 | 1963-06-18 | Gulf Research Development Co | Process for alkylating aromatics in the presence of a heavy metal halide, an organic halide and an organo aluminum halide |
NL153168B (nl) * | 1965-09-03 | 1977-05-16 | Du Pont | Werkwijze voor de bereiding van cyclododecatrieen (1, 5, 9) door trimerisatie van butadieen. |
FR1550186A (de) * | 1967-08-31 | 1968-12-20 | ||
IE35231B1 (en) * | 1970-03-26 | 1975-12-24 | Solvay | Process for the preparation of a ziegler-natta type catalyst |
NL7113778A (de) * | 1970-10-13 | 1972-04-17 | ||
US4098979A (en) * | 1970-12-29 | 1978-07-04 | Sumitomo Chemical Company, Limited | Method for preparing easily processable polyolefin granule |
DE2343361A1 (de) * | 1972-08-30 | 1974-03-14 | Stamicarbon | Polyalkylene |
US3953414A (en) * | 1972-09-13 | 1976-04-27 | Montecatini Edison S.P.A., | Catalysts for the polymerization of olefins to spherically shaped polymers |
US3925338A (en) * | 1973-03-16 | 1975-12-09 | Monsanto Co | Control of polymer particle size in olefin polymerization |
NL7502153A (nl) | 1974-02-27 | 1975-08-29 | Monsanto Co | Werkwijze voor de regeling van de deeltjes- grootte bij de polymerisatie van alkenen. |
DE2553179A1 (de) | 1975-11-27 | 1977-06-08 | Hoechst Ag | Verfahren zur herstellung eines katalysators |
GB1562200A (en) * | 1975-12-04 | 1980-03-05 | British Petroleum Co | Process for the production of a supported ziegler catalystcomponent |
NL7702323A (nl) * | 1977-03-04 | 1978-09-06 | Stamicarbon | Katalysator voor de bereiding van polyalkenen. |
GB2010870B (en) | 1977-12-21 | 1982-05-26 | Bp Chem Int Ltd | Polymerisaton catalyst |
US4302565A (en) * | 1978-03-31 | 1981-11-24 | Union Carbide Corporation | Impregnated polymerization catalyst, process for preparing, and use for ethylene copolymerization |
US4302566A (en) * | 1978-03-31 | 1981-11-24 | Union Carbide Corporation | Preparation of ethylene copolymers in fluid bed reactor |
-
1980
- 1980-06-30 US US06/163,959 patent/US4405495A/en not_active Expired - Lifetime
-
1981
- 1981-06-16 ZA ZA814068A patent/ZA814068B/xx unknown
- 1981-06-18 NZ NZ197460A patent/NZ197460A/en unknown
- 1981-06-18 CA CA000380100A patent/CA1171844A/en not_active Expired
- 1981-06-22 EP EP81302799A patent/EP0043220B1/de not_active Expired
- 1981-06-22 IL IL63155A patent/IL63155A/xx not_active IP Right Cessation
- 1981-06-22 AT AT81302799T patent/ATE18769T1/de not_active IP Right Cessation
- 1981-06-22 DE DE8181302799T patent/DE3174173D1/de not_active Expired
- 1981-06-23 MA MA19395A patent/MA19185A1/fr unknown
- 1981-06-24 NO NO812155A patent/NO160714C/no unknown
- 1981-06-25 AU AU72183/81A patent/AU540181B2/en not_active Ceased
- 1981-06-26 BR BR8104037A patent/BR8104037A/pt not_active IP Right Cessation
- 1981-06-28 SU SU813338297A patent/SU1295996A3/ru active
- 1981-06-29 MX MX188067A patent/MX158563A/es unknown
- 1981-06-29 CS CS814944A patent/CS228511B2/cs unknown
- 1981-06-29 ES ES503478A patent/ES503478A0/es active Granted
- 1981-06-29 CS CS823251A patent/CS232723B2/cs unknown
- 1981-06-29 TR TR21555A patent/TR21555A/xx unknown
- 1981-06-29 KR KR1019810002342A patent/KR840001785B1/ko active
- 1981-06-29 DK DK288081A patent/DK288081A/da not_active Application Discontinuation
- 1981-06-29 FI FI812029A patent/FI70417C/fi not_active IP Right Cessation
- 1981-06-29 JP JP56099831A patent/JPS6050367B2/ja not_active Expired
- 1981-06-29 IE IE1456/81A patent/IE52782B1/en not_active IP Right Cessation
- 1981-06-29 IN IN703/CAL/81A patent/IN154420B/en unknown
- 1981-06-29 GR GR65371A patent/GR75713B/el unknown
- 1981-06-29 PH PH25829A patent/PH19877A/en unknown
- 1981-06-30 DD DD81231322A patent/DD160520A5/de not_active IP Right Cessation
- 1981-06-30 DD DD81247744A patent/DD210459A5/de unknown
- 1981-07-01 EG EG376/81A patent/EG15793A/xx active
-
1982
- 1982-06-22 ES ES513361A patent/ES8303457A1/es not_active Expired
-
1983
- 1983-07-25 US US06/516,932 patent/US4521573A/en not_active Expired - Lifetime
-
1984
- 1984-06-16 IN IN415/CAL/84A patent/IN156046B/en unknown
- 1984-08-30 KR KR1019840005309A patent/KR840001786B1/ko not_active IP Right Cessation
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