JPS52104593A - Polymerization of olefins - Google Patents

Polymerization of olefins

Info

Publication number
JPS52104593A
JPS52104593A JP2117976A JP2117976A JPS52104593A JP S52104593 A JPS52104593 A JP S52104593A JP 2117976 A JP2117976 A JP 2117976A JP 2117976 A JP2117976 A JP 2117976A JP S52104593 A JPS52104593 A JP S52104593A
Authority
JP
Japan
Prior art keywords
olefins
polymerization
catalyst
high yields
specific composition
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
JP2117976A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5645404B2 (enExample
Inventor
Akinori Toyoda
Shuji Minami
Norio Kashiwa
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP2117976A priority Critical patent/JPS52104593A/ja
Priority to NO770681A priority patent/NO151368C/no
Priority to ZA00771181A priority patent/ZA771181B/xx
Priority to IT20761/77A priority patent/IT1074315B/it
Priority to AT132277A priority patent/AT354081B/de
Priority to CA272,787A priority patent/CA1089843A/en
Priority to AU22762/77A priority patent/AU503354B2/en
Priority to FR7705801A priority patent/FR2342995A1/fr
Priority to DE2708588A priority patent/DE2708588C2/de
Priority to BE175305A priority patent/BE851882A/xx
Priority to GB8344/77A priority patent/GB1540323A/en
Priority to ES456371A priority patent/ES456371A1/es
Priority to NL7702174.A priority patent/NL164046C/xx
Priority to US05/773,266 priority patent/US4143223A/en
Priority to BR7701249A priority patent/BR7701249A/pt
Priority to SE7702271A priority patent/SE437376B/xx
Priority to PT66256A priority patent/PT66256B/pt
Publication of JPS52104593A publication Critical patent/JPS52104593A/ja
Publication of JPS5645404B2 publication Critical patent/JPS5645404B2/ja
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
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • 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)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
JP2117976A 1976-03-01 1976-03-01 Polymerization of olefins Granted JPS52104593A (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
JP2117976A JPS52104593A (en) 1976-03-01 1976-03-01 Polymerization of olefins
NO770681A NO151368C (no) 1976-03-01 1977-02-28 Fremgangsmaate ved polymerisering av olefiner, samt katalysator for anvendelse ved fremgangsmaaten.
ZA00771181A ZA771181B (en) 1976-03-01 1977-02-28 Process for polymerizing a-olefins and catalyst therefor
IT20761/77A IT1074315B (it) 1976-03-01 1977-02-28 Procedimento di polimerizzazione di alfa-olefine e catalizzatore per esso
AT132277A AT354081B (de) 1976-03-01 1977-02-28 Verfahren zum polymerisieren von alpha-olefinen
CA272,787A CA1089843A (en) 1976-03-01 1977-02-28 PROCESS FOR POLYMERIZING .alpha.-OLEFINS AND CATALYST THEREFOR
AU22762/77A AU503354B2 (en) 1976-03-01 1977-02-28 Olefin polymerisation catalyst
FR7705801A FR2342995A1 (fr) 1976-03-01 1977-02-28 Procede de polymerisation d'a-olefines et catalyseur utile dans ce procede
DE2708588A DE2708588C2 (de) 1976-03-01 1977-02-28 Verfahren zur Polymerisierung von α-Olefinen mit 3-6 Kohlenstoffatomen sowie zu deren Copolymerisation mit einem konjugierten oder nicht konjugierten Dienkohlenwasserstoff oder mit einer geringen Menge an Äthylen und feste Halogen enthaltende Titan-Katalysator-Komponente zur Durchführung des Verfahrens
BE175305A BE851882A (fr) 1976-03-01 1977-02-28 Procede de polymerisation d' -olefines et catalyseur utilise pour ce procede
GB8344/77A GB1540323A (en) 1976-03-01 1977-02-28 Process for polymerising alpha-olefins and catalyst therefor
ES456371A ES456371A1 (es) 1976-03-01 1977-02-28 Un procedimiento para la polimerizacion o copolimerizacion catalitica en alfa-olefinas.
NL7702174.A NL164046C (nl) 1976-03-01 1977-03-01 Werkwijze voor het polymeriseren of copolymeriseren van alfa-alkenen, werkwijze voor het bereiden van een daarvoor geschikte katalysator, alsmede uit de aldus bereide polymeren vervaardigde, gevormde voort- brengselen.
US05/773,266 US4143223A (en) 1976-03-01 1977-03-01 Process for polymerizing alpha-olefins and catalyst therefor
BR7701249A BR7701249A (pt) 1976-03-01 1977-03-01 Processo e composicao catalitica para polimerizar ou copolimerizar alfa-olefinas
SE7702271A SE437376B (sv) 1976-03-01 1977-03-01 Forfarande och katalysatorkomposition for polymerisation av alfa-olefiner med 3-6 kolatomer
PT66256A PT66256B (en) 1976-03-01 1977-03-01 Process for polymeriz alpha-olefins and catalyst therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2117976A JPS52104593A (en) 1976-03-01 1976-03-01 Polymerization of olefins

Publications (2)

Publication Number Publication Date
JPS52104593A true JPS52104593A (en) 1977-09-02
JPS5645404B2 JPS5645404B2 (enExample) 1981-10-26

Family

ID=12047700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2117976A Granted JPS52104593A (en) 1976-03-01 1976-03-01 Polymerization of olefins

Country Status (17)

Country Link
US (1) US4143223A (enExample)
JP (1) JPS52104593A (enExample)
AT (1) AT354081B (enExample)
AU (1) AU503354B2 (enExample)
BE (1) BE851882A (enExample)
BR (1) BR7701249A (enExample)
CA (1) CA1089843A (enExample)
DE (1) DE2708588C2 (enExample)
ES (1) ES456371A1 (enExample)
FR (1) FR2342995A1 (enExample)
GB (1) GB1540323A (enExample)
IT (1) IT1074315B (enExample)
NL (1) NL164046C (enExample)
NO (1) NO151368C (enExample)
PT (1) PT66256B (enExample)
SE (1) SE437376B (enExample)
ZA (1) ZA771181B (enExample)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52147688A (en) * 1976-06-02 1977-12-08 Mitsui Petrochem Ind Ltd Preparation of polyolefin
JPS5339991A (en) * 1976-09-27 1978-04-12 Mitsui Petrochem Ind Ltd Production of titanium catalyst component
JPS5343094A (en) * 1976-09-30 1978-04-18 Mitsui Petrochem Ind Ltd Solid catalyst component, olefin polymerization catalyst and polymerization method
JPS53124592A (en) * 1977-04-07 1978-10-31 Nippon Oil Co Ltd Preparation of polyolefin
JPS54103494A (en) * 1978-02-01 1979-08-14 Mitsui Toatsu Chem Inc Polymerization of olefin
EP0700943A1 (en) 1994-08-18 1996-03-13 Chisso Corporation A highly stiff propylene-ethylene block copolymer composition and a process for producing the same
US5854355A (en) * 1995-04-24 1998-12-29 Chisso Corporation Continuous process for preparation of highly rigid propylene-ethylene block copolymers
WO2018124070A1 (ja) 2016-12-27 2018-07-05 三井化学株式会社 潤滑油組成物、潤滑油用粘度調整剤、および潤滑油用添加剤組成物
US11873462B2 (en) 2019-08-29 2024-01-16 Mitsui Chemicals, Inc. Lubricating oil composition

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1068112B (it) * 1976-08-09 1985-03-21 Montedison Spa Componenti di catalizzatori per la polimerizzazione delle alfa olefine e catalizzatori da essi ottenuti
GB1569228A (en) * 1976-12-13 1980-06-11 Mitsubishi Chem Ind Process for the polymerisation of olefins and catalyst therefor
JPS591407B2 (ja) * 1977-03-04 1984-01-12 三井化学株式会社 チタン触媒成分の製造方法
IT1114822B (it) * 1977-07-04 1986-01-27 Montedison Spa Componenti di catalizzatori per la polimerizzazione delle alfa-olefine
JPS54112982A (en) * 1978-02-02 1979-09-04 Sumitomo Chem Co Ltd Polymerization of olefins
US4258167A (en) * 1978-02-13 1981-03-24 Nissan Chemical Industries, Ltd. Process for producing powdery isotactic polyolefin
US4302566A (en) * 1978-03-31 1981-11-24 Union Carbide Corporation Preparation of ethylene copolymers in fluid bed reactor
US4390677A (en) * 1978-03-31 1983-06-28 Karol Frederick J Article molded from ethylene hydrocarbon copolymer
IT1113129B (it) * 1978-04-12 1986-01-20 Montedison Spa Catalizzatori e componenti di catalizzatori per la polimerizzazione delle olefine
JPS54158489A (en) * 1978-06-05 1979-12-14 Mitsubishi Petrochem Co Ltd Polymerization of olefin
DE2830039A1 (de) * 1978-07-07 1980-01-17 Hoechst Ag Verfahren zur herstellung eines mischkatalysators
JPS5534238A (en) * 1978-08-31 1980-03-10 Chisso Corp Preparation of alpha-olefin polymer
IT1099416B (it) * 1978-10-23 1985-09-18 Montedison Spa Componenti e catalizzatori per la polimerizzazione delle olefine
US4243552A (en) * 1978-12-11 1981-01-06 Phillips Petroleum Company Polymerization catalyst and process
US4303771A (en) * 1978-12-14 1981-12-01 Union Carbide Corporation Process for the preparation of high density ethylene polymers in fluid bed reactor
JPS55115416A (en) * 1979-02-27 1980-09-05 Nippon Oil Co Ltd Manufacture of copolymer
ZA801724B (en) * 1979-04-01 1981-03-25 Stamicarbon Catalytic titanium compound,process for the manufacture thereof,and process for the polymerization of lakenes-1 with application of such a titanium component
NL7902534A (nl) * 1979-04-01 1980-10-03 Stamicarbon Werkwijze voor het polymeriseren van alkenen-1.
JPS55133408A (en) * 1979-04-05 1980-10-17 Sumitomo Chem Co Ltd Polymerization of olefin
US4366298A (en) * 1979-07-05 1982-12-28 Wacker-Chemie Gmbh Process and heavy metal catalyst for the polymerization of α-olefins, particularly polyethylene
JPS5630407A (en) * 1979-08-22 1981-03-27 Sumitomo Chem Co Ltd Preparation of highly stereoregular alpha-olefin polymer
DE2934689A1 (de) * 1979-08-28 1981-03-12 Hercules Inc., 19899 Wilmington, Del. Verfahren zur herstellung einer katalysatorkomponente fuer die polymerisation von 1-olefinen.
JPS5950246B2 (ja) * 1979-10-16 1984-12-07 三井化学株式会社 成形用オレフイン共重合体の製法
JPS5856523B2 (ja) * 1979-12-18 1983-12-15 有限会社 東洋ストウフア−・ケミカル α−オレフイン重合用触媒成分の製造方法
US4267294A (en) * 1979-12-18 1981-05-12 Hercules Incorporated 1-Olefin polymerization catalyst
IT1141295B (it) * 1980-04-22 1986-10-01 Montedison Spa Componenti e catalizzatori per la polimerizzazione delle alfaolefine
US4312782A (en) * 1980-05-12 1982-01-26 Stauffer Chemical Company Titanium halide catalyst for polymerization
US4347158A (en) * 1980-05-02 1982-08-31 Dart Industries, Inc. Supported high efficiency polyolefin catalyst component and methods of making and using the same
US4425257A (en) 1980-05-02 1984-01-10 Phillips Petroleum Company Supported high efficiency polyolefin catalyst component and methods of making and using the same
US4422957A (en) * 1980-05-02 1983-12-27 Phillips Petroleum Company Methods of producing polyolefins using supported high efficiency polyolefin catalyst components
US4347160A (en) * 1980-06-27 1982-08-31 Stauffer Chemical Company Titanium halide catalyst system
US4325836A (en) * 1980-07-18 1982-04-20 Stauffer Chemical Company Novel titanium halide containing catalyst
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.
CA1159198A (en) * 1980-09-29 1983-12-20 Akinobu Shiga PROCESS FOR PRODUCING HIGHLY STEREOREGULA .alpha.-OLEFIN POLYMERS
US4394291A (en) * 1981-03-04 1983-07-19 Phillips Petroleum Company Polyolefin polymerization process and catalyst
US4347162A (en) * 1981-03-06 1982-08-31 Euteco Impianti S.P.A. Catalyst for the polymerization of alpha-olefins
US4400303A (en) * 1981-03-09 1983-08-23 Phillips Petroleum Company Catalyst for olefin polymerization
JPS57205406A (en) * 1981-06-11 1982-12-16 Toyo Sutoufuaa Chem:Kk Catalytic component for alpha-olefin polymerization and homopolymerization or copolymerization of alpha-olefin
JPS57205408A (en) * 1981-06-11 1982-12-16 Toyo Sutoufuaa Chem:Kk Catalytic component for alpha-olefin polymerization and homopolymerization or copolymerization of alpha-olefin
JPS57205407A (en) * 1981-06-11 1982-12-16 Toyo Sutoufuaa Chem:Kk Catalytic component for alpha-olefin polymerization and homopolymerization or copolymerization of alpha-olefin
JPS57205409A (en) * 1981-06-11 1982-12-16 Toyo Sutoufuaa Chem:Kk Catalytic component for alpha-olefin polymerization and homopolymerization or copolymerization of alpha-olefin
US4425258A (en) 1981-06-24 1984-01-10 Denki Kagaku Kogyo Kabushiki Kaisha Catalysts for polymerization of olefins
AT377625B (de) * 1981-06-29 1985-04-10 Georges A Cournoyer Vorrichtung zum lehren von musiktonleitern und -intervallen
JPS5827704A (ja) * 1981-08-12 1983-02-18 Sumitomo Chem Co Ltd ポリオレフインの製造方法
US4680350A (en) * 1981-09-10 1987-07-14 Stauffer Chemical Company Purified catalyst support
DE3274246D1 (en) * 1981-12-17 1987-01-02 Ici Plc Catalyst composition, production and use
IT1151627B (it) * 1982-06-10 1986-12-24 Anic Spa Procedimento per la preparazione di copolimeri dell'etilene con basso valore delle densita'
US4450242A (en) * 1982-08-09 1984-05-22 Stauffer Chemical Company Catalyst for polymerizing olefins
US4555496A (en) * 1982-08-20 1985-11-26 Phillips Petroleum Company Supported polyolefin catalyst components and methods of making and using the same
US4419269A (en) * 1982-12-06 1983-12-06 The Dow Chemical Company Transition metal containing catalyst
EP0113960A1 (en) * 1982-12-15 1984-07-25 Imperial Chemical Industries Plc Production and use of magnesium halide composition
US4532312A (en) * 1982-12-15 1985-07-30 Phillips Petroleum Company Polyolefin polymerization process and catalyst
US4857612A (en) * 1983-06-27 1989-08-15 Chevron Research Company Process for the polymerization of alpha olefins
US4567154A (en) * 1983-06-27 1986-01-28 Chevron Research Company Mixed metal alkyl catalyst for olefin polymerization
US4675303A (en) * 1983-06-27 1987-06-23 Chevron Research Company Mixed metal alkyl catalyst for olefin polymerization
JPS6031504A (ja) * 1983-07-29 1985-02-18 Nippon Oil Co Ltd ポリオレフインの製造方法
US4503159A (en) * 1983-08-19 1985-03-05 Phillips Petroleum Company Polyolefin polymerization process and catalyst
US4492768A (en) * 1983-08-19 1985-01-08 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
US4866022A (en) * 1984-03-23 1989-09-12 Amoco Corporation Olefin polymerization catalyst
US4988656A (en) * 1984-03-23 1991-01-29 Amoco Corporation Olefin polymerization catalyst
US4544716A (en) * 1984-06-22 1985-10-01 Phillips Petroleum Company Polyolefin polymerization process and catalyst
US4567153A (en) * 1984-08-13 1986-01-28 Exxon Research & Engineering Co. Polymerization catalyst comprising copulverized solid magnesium compound and solid halide of scandium
US4680351A (en) * 1985-09-06 1987-07-14 Phillips Petroleum Company Supported polyolefin catalyst components and methods of making and using same
US4829038A (en) * 1986-06-17 1989-05-09 Amoco Corporation Alpha-olefin polymerization catalyst system including an advantageous modifier component
US4948770A (en) * 1987-06-29 1990-08-14 Shell Oil Company Method for crystallizing magnesium chloride and method for using in a catalyst composition
DE3823934C2 (de) * 1987-07-31 2002-01-03 Petroleo Brasileiro Sa Verfahren zur Herstellung eines Ethylenpolymerisationskatalysators und Ethylenpolymerisationsverfahren
US5354820A (en) * 1987-12-07 1994-10-11 Idemitsu Petrochemical Company Limited Process for the preparation of olefin polymer
USH860H (en) 1989-01-26 1990-12-04 Shell Oil Company Method for polymerizing alpha olefins
US5206315A (en) * 1989-04-10 1993-04-27 Phillips Petroleum Company Process for polymerizing 1-olefins and catalyst therefor
JP4666426B2 (ja) * 2000-09-29 2011-04-06 東邦チタニウム株式会社 オレフィン類重合用固体触媒成分および触媒
US6878659B2 (en) * 2000-05-24 2005-04-12 Toho Titanium Co., Ltd. Solid catalyst component for olefin polymerization and catalyst
US20030069372A1 (en) * 2001-10-09 2003-04-10 Formosa Plastics Corporation, U.S.A. Olefin polymerization catalyst and process for preparing polyolefins with said catalyst
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
JPWO2009011231A1 (ja) * 2007-07-13 2010-09-16 三井化学株式会社 超高分子量ポリオレフィン微粒子、その製造方法およびその成形体
US9562119B2 (en) * 2010-05-25 2017-02-07 W. R. Grace & Co.-Conn. Ethylene polymerization catalysts

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
NL160286C (enExample) 1971-06-25
GB1492618A (en) * 1974-02-01 1977-11-23 Mitsui Petrochemical Ind Process for preparing highly stereoregular polyolefins and catalyst used therefor
US4076924A (en) * 1974-09-03 1978-02-28 Mitsui Petrochemical Industries Ltd. Process for polymerization or copolymerizing olefins containing at least 3 carbon atoms
JPS565404B2 (enExample) * 1975-02-14 1981-02-04
US4069169A (en) * 1975-11-24 1978-01-17 Mitsui Petrochemical Industries Ltd. Process for preparation of catalyst component supported on high performance carrier

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52147688A (en) * 1976-06-02 1977-12-08 Mitsui Petrochem Ind Ltd Preparation of polyolefin
JPS5339991A (en) * 1976-09-27 1978-04-12 Mitsui Petrochem Ind Ltd Production of titanium catalyst component
JPS5343094A (en) * 1976-09-30 1978-04-18 Mitsui Petrochem Ind Ltd Solid catalyst component, olefin polymerization catalyst and polymerization method
JPS53124592A (en) * 1977-04-07 1978-10-31 Nippon Oil Co Ltd Preparation of polyolefin
JPS54103494A (en) * 1978-02-01 1979-08-14 Mitsui Toatsu Chem Inc Polymerization of olefin
EP0700943A1 (en) 1994-08-18 1996-03-13 Chisso Corporation A highly stiff propylene-ethylene block copolymer composition and a process for producing the same
US5672658A (en) * 1994-08-18 1997-09-30 Chisso Corporation Highly stiff propylene-ethylene block copolymer composition and a process for producing the same
US5854355A (en) * 1995-04-24 1998-12-29 Chisso Corporation Continuous process for preparation of highly rigid propylene-ethylene block copolymers
WO2018124070A1 (ja) 2016-12-27 2018-07-05 三井化学株式会社 潤滑油組成物、潤滑油用粘度調整剤、および潤滑油用添加剤組成物
US11162050B2 (en) 2016-12-27 2021-11-02 Mitsui Chemicals, Inc. Lubricating oil composition, viscosity modifier for lubricating oil, and additive composition for lubricating oil
US11873462B2 (en) 2019-08-29 2024-01-16 Mitsui Chemicals, Inc. Lubricating oil composition

Also Published As

Publication number Publication date
FR2342995A1 (fr) 1977-09-30
PT66256A (en) 1977-04-01
BR7701249A (pt) 1977-10-18
NO770681L (no) 1977-09-02
ATA132277A (de) 1979-05-15
NL164046C (nl) 1980-11-17
CA1089843A (en) 1980-11-18
BE851882A (fr) 1977-08-29
AT354081B (de) 1979-12-27
NL7702174A (nl) 1977-09-05
FR2342995B1 (enExample) 1978-10-20
PT66256B (en) 1978-08-07
JPS5645404B2 (enExample) 1981-10-26
GB1540323A (en) 1979-02-07
DE2708588C2 (de) 1982-07-01
NL164046B (nl) 1980-06-16
NO151368B (no) 1984-12-17
US4143223A (en) 1979-03-06
ZA771181B (en) 1978-01-25
AU503354B2 (en) 1979-08-30
SE7702271L (sv) 1977-09-02
AU2276277A (en) 1978-09-07
DE2708588A1 (de) 1977-09-08
IT1074315B (it) 1985-04-20
SE437376B (sv) 1985-02-25
NO151368C (no) 1985-03-27
ES456371A1 (es) 1978-02-16

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