WO1981000107A1 - Methode d'obtention de phtalonitriles - Google Patents

Methode d'obtention de phtalonitriles Download PDF

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Publication number
WO1981000107A1
WO1981000107A1 PCT/SU1979/000042 SU7900042W WO8100107A1 WO 1981000107 A1 WO1981000107 A1 WO 1981000107A1 SU 7900042 W SU7900042 W SU 7900042W WO 8100107 A1 WO8100107 A1 WO 8100107A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
oxide
temperature
sec
selectivity
Prior art date
Application number
PCT/SU1979/000042
Other languages
English (en)
Russian (ru)
Inventor
R Rizaev
N Ilyasova
J Litvishkov
V Sheinin
K Gusein
M Mirataev
Zade S Gusein
Z Maggeramova
T Farzulaev
Original Assignee
Neftekhimicheskikh Protsessov
R Rizaev
N Ilyasova
J Litvishkov
V Sheinin
K Gusein
M Mirataev
Zade S Gusein
Z Maggeramova
T Farzulaev
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
Priority to NLAANVRAGE7901780,A priority Critical patent/NL178870C/xx
Application filed by Neftekhimicheskikh Protsessov, R Rizaev, N Ilyasova, J Litvishkov, V Sheinin, K Gusein, M Mirataev, Zade S Gusein, Z Maggeramova, T Farzulaev filed Critical Neftekhimicheskikh Protsessov
Priority to JP54501346A priority patent/JPS582233B2/ja
Priority to GB8106247A priority patent/GB2067197B/en
Priority to PCT/SU1979/000042 priority patent/WO1981000107A1/fr
Priority to DE2953735T priority patent/DE2953735C2/de
Priority to FR7923673A priority patent/FR2465714A1/fr
Publication of WO1981000107A1 publication Critical patent/WO1981000107A1/fr
Priority to SE8101271A priority patent/SE442508B/sv

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04—Alumina
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/08—Silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/745—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/847—Vanadium, niobium or tantalum or polonium
    • B01J23/8472—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85—Chromium, molybdenum or tungsten
    • B01J23/88—Molybdenum
    • B01J23/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8876—Arsenic, antimony or bismuth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85—Chromium, molybdenum or tungsten
    • B01J23/88—Molybdenum
    • B01J23/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8877—Vanadium, tantalum, niobium or polonium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0201—Impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0236—Drying, e.g. preparing a suspension, adding a soluble salt and drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/082—Decomposition and pyrolysis
    • B01J37/088—Decomposition of a metal salt
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/24—Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons
    • C07C253/28—Preparation of carboxylic acid nitriles by ammoxidation of hydrocarbons or substituted hydrocarbons containing six-membered aromatic rings, e.g. styrene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts

Definitions

  • the methods of receiving radiation were known through oxidative ammunition ⁇ . the effect of the recirculation of a non-exhausted hydrocarbon and intermittent nitrous oxide in the presence of a catalyst that exists
  • the written methods are ineffective and have a poor output, as well as a low productivity. Also known are the methods of reception of increasingly ammunition.
  • the process is at a temperature of 340-480 ° C, a small amount of xi ⁇ lol: ammonia: the air is 1: 7: 20, it is free from air, it takes about 6–7 minutes. , 2% by weight of bismuth oxide, 5% by weight> oxide of vanadium or molybdenum oxide, deposited on aluminum oxide. ⁇
  • These conditions are selectively disconnected and the system is 93 ⁇ . % product and performance - 3 - the heat exchanger is equal to 67 g / l-kat-hour, the heater is installed, the speed is 57 g / l-kat »hour
  • the well-known method of processing is produced by a low productivity and lack of a high yield of 5 by the target product.
  • ⁇ as ⁇ y ⁇ ie iz ⁇ b ⁇ e ⁇ eniya ⁇ ⁇ sn ⁇ vu iz ⁇ b ⁇ e ⁇ eniya was ⁇ l ⁇ zhena task s ⁇ zda ⁇ ⁇ a ⁇ y s ⁇ s ⁇ b ⁇ lucheniya ⁇ al ⁇ ni ⁇ il ⁇ v ⁇ u ⁇ em ⁇ db ⁇ a s ⁇ - ⁇ ve ⁇ s ⁇ vuscheg ⁇ ⁇ a ⁇ aliza ⁇ a, ⁇ y would ⁇ zv ⁇ lil uve- 10 lichi ⁇ vy ⁇ d tselev ⁇ g ⁇ ⁇ du ⁇ a and ⁇ a ⁇ zhe removal rates with edshshtsy ⁇ bema ⁇ a ⁇ aliza ⁇ a.
  • silica gel or aluminum oxide it is advisable to use silica gel or aluminum oxide as a carrier for 35 times. - 4 -
  • the vapor-gas mixture after the conversion is condensed with the next aim of the heaters.
  • the resulting mass is dried at a temperature of -20050-200 ° C for 10-12 hours, then it is heated in the course of air or inert gas at a temperature of 400-20-800 ° C for 6.
  • the result is a catalyst made up of a mixture of oxides of antimony, bismuth, iron, vanadium or molybdenum applied to a carrier.
  • the advantage of the proposed method in comparison with the known ones is a significant simultaneous increase in yield and selective cultivation.
  • EXAMPLE 14 Take 8.6 g of ⁇ - acid, and then
  • D ⁇ myshlennaya ⁇ imenim ⁇ s ⁇ ⁇ al ⁇ ni ⁇ ily is ⁇ lzuyu ⁇ sya in ⁇ izv ⁇ ds ⁇ ve vys ⁇ - ⁇ e ⁇ m ⁇ s ⁇ y ⁇ i ⁇ ⁇ liamidny ⁇ and ⁇ lie ⁇ i ⁇ ny ⁇ v ⁇ l ⁇ n, n ⁇ vy ⁇ vvd ⁇ v ⁇ sililendiiz ⁇ tsiana ⁇ vy ⁇ ⁇ las ⁇ mass, ⁇ al ⁇ tsiani- n ⁇ vy ⁇ ⁇ asi ⁇ eley and ⁇ a ⁇ zhe for ⁇ lucheniya ⁇ e ⁇ e ⁇ alev ⁇ y and iz ⁇ alev ⁇ y ⁇ isl ⁇ and d ⁇ ugi ⁇ ma ⁇ e ⁇ ial ⁇ v, ⁇ ladaschi ⁇ ⁇ dts ⁇ m tsenny ⁇ S ⁇ OS ⁇ .

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

Une methode d'obtention de phtalonitriles consiste a soumettre des xylenes a une ammonolyse d'oxydation a une temperature de 340 a 480 C en presence d'un catalyseur ayant la composition suivante en% en poids: oxyde d'antimoine: 1-25; oxyde de bismuth: 1-20oxyde de vanadium ou oxyde de molybdene 0,2-15; oxyde de fer: 0,1-25; materiau porteur: balance.
PCT/SU1979/000042 1979-03-06 1979-07-02 Methode d'obtention de phtalonitriles WO1981000107A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NLAANVRAGE7901780,A NL178870C (nl) 1979-03-06 1979-03-06 Werkwijze voor de bereiding van ftalonitrillen, alsmede de daarbij te gebruiken katalysator.
JP54501346A JPS582233B2 (ja) 1979-03-06 1979-07-02 フタロニトリルの調製方法
GB8106247A GB2067197B (en) 1979-03-06 1979-07-02 Method of obtaining phtalonitriles
PCT/SU1979/000042 WO1981000107A1 (fr) 1979-03-06 1979-07-02 Methode d'obtention de phtalonitriles
DE2953735T DE2953735C2 (de) 1979-03-06 1979-07-02 Verfahren zur Herstellung von Phthalodinitrilen
FR7923673A FR2465714A1 (fr) 1979-03-06 1979-09-24 Procede de preparation de phtalonitriles
SE8101271A SE442508B (sv) 1979-03-06 1981-02-26 Forfarande for framstellning av ftalonitriler

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NLAANVRAGE7901780,A NL178870C (nl) 1979-03-06 1979-03-06 Werkwijze voor de bereiding van ftalonitrillen, alsmede de daarbij te gebruiken katalysator.
PCT/SU1979/000042 WO1981000107A1 (fr) 1979-03-06 1979-07-02 Methode d'obtention de phtalonitriles
WOSU79/00042 1979-07-02
FR7923673A FR2465714A1 (fr) 1979-03-06 1979-09-24 Procede de preparation de phtalonitriles

Publications (1)

Publication Number Publication Date
WO1981000107A1 true WO1981000107A1 (fr) 1981-01-22

Family

ID=27250953

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SU1979/000042 WO1981000107A1 (fr) 1979-03-06 1979-07-02 Methode d'obtention de phtalonitriles

Country Status (7)

Country Link
JP (1) JPS582233B2 (fr)
DE (1) DE2953735C2 (fr)
FR (1) FR2465714A1 (fr)
GB (1) GB2067197B (fr)
NL (1) NL178870C (fr)
SE (1) SE442508B (fr)
WO (1) WO1981000107A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589538A (en) * 1983-02-18 1986-05-20 Mors Device for locking and releasing objects intended for public use, such as luggage carts
US4641739A (en) * 1984-09-07 1987-02-10 Mors Device for locking and releasing objects intended for public use, such as luggage carts
US5007333A (en) * 1988-12-23 1991-04-16 Hgz Maschinenbau Ag Automatic coffee machine
US5309822A (en) * 1991-10-11 1994-05-10 Hgz Maschinenbau Ag Automatic coffee machine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1181408A (fr) * 1981-12-21 1985-01-22 Ernest C. Milberger Nitrogenation d'hydrocarbures, y compris l'obtention de maleimide
JPH0629231B2 (ja) * 1987-04-08 1994-04-20 日東化学工業株式会社 クロルベンゾニトリル類の製造方法
FR2687144B1 (fr) * 1992-02-06 1995-05-19 Rhone Poulenc Chimie Procede d'ammoxydation d'hydrocarbures satures.
EP2113498A1 (fr) 2008-04-25 2009-11-04 Basf Se Procédé d'oxydation partielle ou d'ammoxydation à l'aide d'un catalyseur de molybdate de fer
FR3002227B1 (fr) * 2013-02-20 2021-10-01 Arkema France Procede de nitrilation en phase gaz et liquide gaz

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1575013A (fr) * 1967-07-19 1969-07-18
DE1643630B1 (de) * 1967-07-19 1971-07-01 Basf Ag Verfahren zur Herstellung von aromatischen Nitrilen
US4062885A (en) * 1976-06-16 1977-12-13 Soltan Dzhafarovich Mekhtiev Process for producing phthalonitrile
GB1530571A (en) * 1976-06-01 1978-11-01 Sun Ventures Inc Ammoxidation process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414631A (en) * 1965-06-10 1968-12-03 Standard Oil Co Oxydehydrogenation process
US3338952A (en) * 1965-11-15 1967-08-29 Standard Oil Co Process for the catalytic ammoxidation of olefins to nitriles
US3497545A (en) * 1966-03-10 1970-02-24 Halcon International Inc Preparation of polynitriles by ammoxidation of polyalkyl substituted aromatic hydrocarbons utilizing recycle of unreacted hydrocarbons and intermediate nitriles
FR1526405A (fr) * 1966-05-18 1968-05-24 Lummus Co Procédé de production de polynitriles aromatiques
DE1930880B2 (de) * 1969-06-18 1980-02-21 Chemische Werke Huels Ag, 4370 Marl Verfahren zur Herstellung von Iso- und/oder Terephthalsäuredinitrilen
BE756614A (fr) * 1969-09-26 1971-03-01 Degussa Catalyseur pour la preparation de nitriles aromatiques ou heteroaromatiques
DE2039497C3 (de) * 1970-08-08 1974-01-17 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Verfahren zur Herstellung von Antimon enthaltenden Katalysatoren und Verwendung der Katalysatoren für die Herstellung von aromatischen und heteroaromatischen Nitrilen
US3803204A (en) * 1972-03-27 1974-04-09 Standard Oil Co Preparation of aromatic nitriles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1575013A (fr) * 1967-07-19 1969-07-18
DE1643630B1 (de) * 1967-07-19 1971-07-01 Basf Ag Verfahren zur Herstellung von aromatischen Nitrilen
GB1530571A (en) * 1976-06-01 1978-11-01 Sun Ventures Inc Ammoxidation process
US4062885A (en) * 1976-06-16 1977-12-13 Soltan Dzhafarovich Mekhtiev Process for producing phthalonitrile
DE2627068B2 (de) * 1976-06-16 1979-05-31 Institut Neftechimitscheskich Processov Imeni Akademika Ju. G. Mamedalieva Akademii Nauk Azerbaidschanskoj Ssr, Baku (Sowjetunion) Verfahren zur Herstellung von Phthalsäuredinitril

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589538A (en) * 1983-02-18 1986-05-20 Mors Device for locking and releasing objects intended for public use, such as luggage carts
US4641739A (en) * 1984-09-07 1987-02-10 Mors Device for locking and releasing objects intended for public use, such as luggage carts
US5007333A (en) * 1988-12-23 1991-04-16 Hgz Maschinenbau Ag Automatic coffee machine
US5309822A (en) * 1991-10-11 1994-05-10 Hgz Maschinenbau Ag Automatic coffee machine

Also Published As

Publication number Publication date
GB2067197A (en) 1981-07-22
FR2465714B1 (fr) 1981-11-06
FR2465714A1 (fr) 1981-03-27
NL7901780A (nl) 1980-09-09
SE442508B (sv) 1986-01-13
NL178870B (nl) 1986-01-02
DE2953735C2 (de) 1985-09-26
NL178870C (nl) 1986-06-02
DE2953735T1 (fr) 1982-01-28
GB2067197B (en) 1983-05-18
JPS582233B2 (ja) 1983-01-14
SE8101271L (sv) 1981-02-26
JPS56500775A (fr) 1981-06-11

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