WO1997001531A1 - Procede de production de dimeres d'acrylonitrile - Google Patents
Procede de production de dimeres d'acrylonitrile Download PDFInfo
- Publication number
- WO1997001531A1 WO1997001531A1 PCT/JP1996/001760 JP9601760W WO9701531A1 WO 1997001531 A1 WO1997001531 A1 WO 1997001531A1 JP 9601760 W JP9601760 W JP 9601760W WO 9701531 A1 WO9701531 A1 WO 9701531A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- acrylonitrile
- ruthenium complex
- ruthenium
- production method
- Prior art date
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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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2282—Unsaturated compounds used as ligands
- B01J31/2291—Olefins
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
- C07C255/01—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
- C07C255/06—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms of an acyclic and unsaturated carbon skeleton
- C07C255/09—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms of an acyclic and unsaturated carbon skeleton containing at least two cyano groups bound to the carbon skeleton
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/12—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
- B01J31/14—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron
- B01J31/146—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron of boron
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2204—Organic complexes the ligands containing oxygen or sulfur as complexing atoms
- B01J31/2208—Oxygen, e.g. acetylacetonates
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2282—Unsaturated compounds used as ligands
- B01J31/2295—Cyclic compounds, e.g. cyclopentadienyls
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B61/00—Other general methods
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
-
- 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
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/30—Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
- B01J2231/32—Addition reactions to C=C or C-C triple bonds
- B01J2231/323—Hydrometalation, e.g. bor-, alumin-, silyl-, zirconation or analoguous reactions like carbometalation, hydrocarbation
-
- 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
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/40—Substitution reactions at carbon centres, e.g. C-C or C-X, i.e. carbon-hetero atom, cross-coupling, C-H activation or ring-opening reactions
- B01J2231/42—Catalytic cross-coupling, i.e. connection of previously not connected C-atoms or C- and X-atoms without rearrangement
- B01J2231/4205—C-C cross-coupling, e.g. metal catalyzed or Friedel-Crafts type
-
- 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
- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/80—Complexes comprising metals of Group VIII as the central metal
- B01J2531/82—Metals of the platinum group
- B01J2531/821—Ruthenium
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/04—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/24—Phosphines, i.e. phosphorus bonded to only carbon atoms, or to both carbon and hydrogen atoms, including e.g. sp2-hybridised phosphorus compounds such as phosphabenzene, phosphole or anionic phospholide ligands
- B01J31/2404—Cyclic ligands, including e.g. non-condensed polycyclic ligands, the phosphine-P atom being a ring member or a substituent on the ring
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Definitions
- the present invention relates to a dimerization reaction product of acrylonitrile, in particular, an intermediate of hexamethylene diamine and adipic acid, which are raw materials of nylon 166, or a rust inhibitor or rubber.
- the present invention relates to a process for producing adiponitrile, 1,4-dicyanobutene or 1,4-dicyanobutadiene, which is a linear dimer of acryl nitrile useful as an intermediate such as a sulfur accelerator. .
- a method for producing adiponitrile or its precursor, 1,4-di-cyanobutene or 1,4-di-cyanobutane, by dimerization of acrylonitrile is disclosed in — 27 583, a method using electrolytic dimerization, JP-A-6-9531, a method using a ruthenium halide compound and an organic tin halide compound in the presence of hydrogen, and JP-A 5-1008, a method using phosphite.
- a method using a catalyst and an aromatic amide compound is described.
- the method using electrolytic dimerization has problems in that the energy cost during production is high and special production equipment is required.
- the method using a ruthenium halide compound or a phosphite catalyst has disadvantages such as a low reaction rate, poor selectivity of a linear dimer, and a short catalyst life, which are undesirable as industrial production methods. are doing.
- a straight-chain dimer of acrylonitrile can be easily produced using a highly active and highly stable catalyst without producing difficult-to-separate by-products. It is an object of the present invention to provide an industrially suitable production method that can be produced efficiently and at a high yield.
- a linear dimer can be obtained from acrylonitrile in good yield by using a ruthenium complex to which cyclopentadiene or a derivative thereof is coordinated as a catalyst. .
- the present invention provides a method for dimerizing acrylonitrile, which comprises reacting acrylonitrile in the presence of a ruthenium complex having ruthenium as a central atom and coordinated with cyclopentadiene or a derivative thereof. This is a method for producing a reaction product.
- the ruthenium complex used in the present invention is a ruthenium complex that is used as a catalyst and has poly and ruthenium as central atoms and at least one of cyclopentadiene or a derivative thereof is coordinated. Further, a polymer of such a ruthenium complex may be used.
- cyclopentadiene derivatives include cyclopentagenenyl group, indenyl group, fluorenyl group, tetrahydroindul group and the like, and these groups include methyl group, ethyl group, propyl group, isopropyl group, isopropyl group, butyl group, octyl group.
- Alkynole group having 1 to 10 carbon atoms such as a benzyl group or a decyl group; a pernoperogenoalkyl group having 1 to 10 carbon atoms such as a perfluoromethyl group, a perfluoroethyl group, or a perfluorodecyl group;
- An aryl group having 6 to 14 carbon atoms such as a tosolei group, a mesityl group, a naphthyl group, an anthracenyl group, a biphenyl group; a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group; C1-C6 alkoxyl group such as group, phenoxy group; halogen atom such as fluorine, chlorine, bromine, iodine One or more substituents or atoms are bonded It may be.
- the ruthenium complex used in the present invention has a high activity
- the ruthenium complex used in the present invention may have an oxyhydrocarbon group represented by RO (R represents a hydrocarbon group) in addition to the cyclic pentagen or a derivative thereof, and may be coordinated (hereinafter referred to as “oxygen”).
- R represents a hydrocarbon group
- a compound coordinated by a hydrocarbon group is referred to as an A-type ruthenium complex.
- ethylene, 2,5-norbornadiene, cyclootagen, acrylonitrile, and other C2 to C8 aromatics And / or halogen atoms such as fluorine, chlorine, bromine and iodine may be coordinated (hereinafter referred to as olefin compounds or halogen atoms such as halogen type B) Ruthenium complex).
- a typical ruthenium A-type complex is represented by the following general formula [1].
- a typical B-type ruthenium complex is represented by the following general formula [2].
- R ' ⁇ R 5 are each independently hydrogen or a C 1-6 alkyl group or ⁇ Li Ichiru groups, they may form a ring.
- R 6 ⁇ R 13 is each independently hydrogen or an alkyl group having 1 to 6 carbon atoms, aryl group, cyano group or ester group, and these may be combined to form a gen compound as a whole. It is fluorine, chlorine, bromine or iodine.
- Examples of the hydrocarbon group represented by R include methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, s-butyl, t-butyl, and octyl.
- An alkyl group having 1 to 10 carbon atoms such as a phenyl group, a decyl group, etc .; an aryl group having 6 to 14 carbon atoms, such as a phenyl group, a tolyl group, a mesityl group, a naphthyl group, an anthracenyl group, or a biphenyl group.
- A-type ruthenium complex a ruthenium complex in which an alkoxyl group is coordinated is preferable.
- phosphine compounds such as triphenyl / lephosphine and diphenylphosphinoethane; e.g. Nitrogen compound: an alkyl group having 1 to 10 carbon atoms such as a methyl group, an ethyl group, a neopentyl group, an octyl group, and a decyl group; a phenyl group, a toluyl group, a mesyl group, a naphthyl group, and an ethylene group. 6 to 6 carbon atoms such as The aryl (ary 1) group of 14 may be coordinated.
- the ruthenium complex used in the present invention may be an A-type ruthenium complex, particularly an alkoxyl group such as an ethoxy group.
- A-type ruthenium complex coordinated to ruthenium atom or B-type ruthenium complex is preferred
- the ruthenium complex may be used alone or as a mixture of two or more kinds.
- the amount of the ruthenium complex is usually from 1 ⁇ 10 4 to 1 mol of acrylonitrile. 0.5 mol, preferably 0.0001 0.1 mol is desirable.
- Metal salts include inorganic salts such as carbonated sodium carbonate and sodium carbonate; organic acid salts such as sodium acetate; tetraphenylboron sodium salt; and tetra (perfluoro) salt.
- Boron compound salts such as phenyl) boron sodium salt and tetra (4-fluorophenyl) boron sodium salt.
- the amount of the metal salt is usually 0.0530 mol, preferably 0.52 mol, per 1 mol of the ruthenium complex. Is desirable.
- the reducing agent examples include organotin compounds, organogermanium compounds, organosilicon compounds, organoboron compounds, organoaluminum compounds, borohydride compounds, aluminum hydride compounds, metal hydrides, and simple metals. Can be These reducing agents may be used alone or in combination of two or more kinds.
- the amount of the reducing agent is usually 0.0530 mol, preferably 0.52 mol, per 1 mol of the ruthenium complex. It is desirable.
- 2-furancarboxylic acid and other additives are added in an amount of 0.001 to 1000 mol per mol of the ruthenium catalyst. Can be added.
- the reaction can be carried out with or without a solvent, but is preferably used.
- Solvents used in the reaction include aliphatic alcohols such as methanol, ethanol, propanol and butanol; halogen-substituted aliphatic alcohols such as CF.j COH and CC 1 CH: OH.
- Aromatic alcohols such as phenol and cresol; Organic acids such as drunk acid and oxalic acid; hydrocarbon compounds such as pentane and hexane; tetrahydrofuran; Ether compounds such as getyl ether; amine compounds such as triethylamine and pyrrolidine: amide compounds such as dimethylformamide and N-methylolepyrrolidone.
- aliphatic alcohols are preferred.
- solvents may be used alone or as a mixture of two or more kinds.
- the amount of the solvent is usually 0.001 to 1000 parts by weight, preferably 1 part by weight of acrylonitrile, preferably It is desirable to use 0.1 to 10 parts by weight.
- the anti-if is preferably performed in an atmosphere of an inert gas such as argon gas or in the presence of hydrogen gas.
- an inert gas such as argon gas or in the presence of hydrogen gas.
- the reaction is performed in the presence of hydrogen gas, a method of performing the reaction under pressurized hydrogen gas can be employed.
- the hydrogen pressure should be 0.001 MPa to 10 MPa (gauge pressure), preferably 0.1 to 3 MPa (gauge pressure).
- the reaction is carried out in the presence of hydrogen gas, the activity of the ruthenium complex is high and the conversion of acrylonitrile is high.
- the proportion of adiponitrile and 1,4-dishanbutene in the product is large, and the proportion of 1,4-dishanbutadiene is small.
- the reaction is carried out in the absence of hydrogen gas, the selectivity of the acrylonitrile linear dimer is good and the generation of by-products is small.
- the reaction temperature in the present invention is 20 to 200 ° C, preferably 80 to 150 ° C. Is desirable.
- the reaction time is usually 0.1 to 20 hours, preferably] to 10 hours.
- acrylonitrile linear dimer By reacting acrylonitrile in this manner, the dimerization reaction of acrylonitrile proceeds, and the acrylonitrile linear dimer is converted to acrylonitrile linear dimer. Diponitrile, 1,4-dicyanobutene (cis or trans) or 1,4-dicyanobutadiene, as well as the monomeric propionitrile and other products can get.
- the acrylonitrile linear dimer thus obtained can be used as an intermediate between hexamethylene diamine and adipic acid, which are raw materials for nylon, or as a rust inhibitor or rubber. Can be used as an intermediate such as a sulfur accelerator.
- Examples 2 to 6 -»-Example 1 was repeated except that the compounds shown in Table 1 were used as the retentium complexes in Examples 1 and 0.1 to 0.1 mmol in Examples 2 to 4, and 0.19 mmci 1 in Examples 5 and 6. Performed in the same manner as 1. Table 1 shows the results.
- Example 6 In order to form polymers having different n, only the amount used in Example 6 was shown as 1 mol of the monomer in []. )
- C p 1 Pentamethylcyclopentagenenyl (C 5 (CH: i);) group In: Indul group
- Example 2 Cp 3 RuNDCi NaBPh 4 3 2 1 .5 0 6 7 1
- Example 23 Cp ⁇ uNDCl CllaCOOAg 3 3 2 20.0 9.16 9
- Example 24 Same as above LiAIH 4 10 4 2.6 1. 0 7 2
- Example 25 Same as above Bu 3 SnH 10 8 5.4 2.5 6 8
- Example 26 Cp 3 RuNDCl LiAlll 4 10 9 0.5.7.17
- Example 27 Cp 3 RuNDCl Bu 3 SnH 10 7 1.5 6.020
- Dimer yield (number of moles of dimer formed / number of moles of A N charged) X 2 X 100 P N: propionitol
- the amount of the additive is based on 1 mole of the complex.
- the amount of additives is the number of moles per mole of complex
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69608657T DE69608657T2 (de) | 1995-06-29 | 1996-06-26 | Verfahren zur herstellung von acrylnitril-dimeren |
US08/793,491 US5922901A (en) | 1995-06-29 | 1996-06-26 | Method for producing dimerization product of acrylonitrile |
KR1019970700932A KR970704672A (ko) | 1995-06-29 | 1996-06-26 | 아크릴로니트릴의 2량화반응생성물의 제조방법 |
EP96921084A EP0795542B1 (en) | 1995-06-29 | 1996-06-26 | Process for the production of acrylonitrile dimers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16433995 | 1995-06-29 | ||
JP7/164339 | 1995-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997001531A1 true WO1997001531A1 (fr) | 1997-01-16 |
Family
ID=15791299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/001760 WO1997001531A1 (fr) | 1995-06-29 | 1996-06-26 | Procede de production de dimeres d'acrylonitrile |
Country Status (7)
Country | Link |
---|---|
US (1) | US5922901A (ja) |
EP (1) | EP0795542B1 (ja) |
KR (1) | KR970704672A (ja) |
CN (1) | CN1047164C (ja) |
CA (1) | CA2198081A1 (ja) |
DE (1) | DE69608657T2 (ja) |
WO (1) | WO1997001531A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60126298T2 (de) | 2000-09-11 | 2007-11-15 | Ube Industries, Ltd., Ube | 4,8-dodecadiendinitril und verfahren zu dessen herstellung |
GB0504851D0 (en) * | 2005-03-09 | 2005-04-13 | E2V Tech Uk Ltd | Biosensor labelling groups |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH069531A (ja) * | 1991-08-23 | 1994-01-18 | Ube Ind Ltd | アクリロニトリル二量体の製法 |
JPH07118220A (ja) * | 1993-09-03 | 1995-05-09 | Ube Ind Ltd | アクリロニトリル二量体の製造法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR89767E (fr) * | 1965-03-18 | 1967-08-18 | Rhone Poulenc Sa | Procédé de dimérisation linéaire de l'acrylonitrile |
JPS52133968A (en) * | 1976-05-06 | 1977-11-09 | Japan Synthetic Rubber Co Ltd | Cyclopentadiene derivatives |
US4422980A (en) * | 1981-08-10 | 1983-12-27 | Standard Oil Company | Acrylic dimerization using supported catalysts |
DE3337294A1 (de) * | 1983-10-13 | 1985-04-25 | Bayer Ag, 5090 Leverkusen | Verfahren zur selektiven hydrierung von c-c-doppelbindungen in gegenwart von reduzierbaren, stickstoffhaltigen gruppen und neue ruthenium-komplexverbindungen |
US5332844A (en) * | 1992-03-06 | 1994-07-26 | Ube Industries, Ltd. | Method of producing straight-chain acrylonitrile dimers |
JPH08245539A (ja) * | 1995-03-15 | 1996-09-24 | Asahi Chem Ind Co Ltd | アクリロニトリル二量体の製造方法 |
-
1996
- 1996-06-26 KR KR1019970700932A patent/KR970704672A/ko active IP Right Grant
- 1996-06-26 CN CN96190945A patent/CN1047164C/zh not_active Expired - Fee Related
- 1996-06-26 DE DE69608657T patent/DE69608657T2/de not_active Expired - Fee Related
- 1996-06-26 EP EP96921084A patent/EP0795542B1/en not_active Expired - Lifetime
- 1996-06-26 US US08/793,491 patent/US5922901A/en not_active Expired - Fee Related
- 1996-06-26 WO PCT/JP1996/001760 patent/WO1997001531A1/ja active IP Right Grant
- 1996-06-26 CA CA002198081A patent/CA2198081A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH069531A (ja) * | 1991-08-23 | 1994-01-18 | Ube Ind Ltd | アクリロニトリル二量体の製法 |
JPH07118220A (ja) * | 1993-09-03 | 1995-05-09 | Ube Ind Ltd | アクリロニトリル二量体の製造法 |
Non-Patent Citations (1)
Title |
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See also references of EP0795542A4 * |
Also Published As
Publication number | Publication date |
---|---|
DE69608657T2 (de) | 2001-02-08 |
EP0795542A4 (en) | 1999-04-07 |
EP0795542A1 (en) | 1997-09-17 |
CN1163607A (zh) | 1997-10-29 |
US5922901A (en) | 1999-07-13 |
KR970704672A (ko) | 1997-09-06 |
DE69608657D1 (de) | 2000-07-06 |
CN1047164C (zh) | 1999-12-08 |
CA2198081A1 (en) | 1997-01-16 |
EP0795542B1 (en) | 2000-05-31 |
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