DE2601139A1 - Verfahren zur herstellung von oxalsaeure beziehungsweise deren alkylestern und katalysator zur durchfuehrung desselben - Google Patents
Verfahren zur herstellung von oxalsaeure beziehungsweise deren alkylestern und katalysator zur durchfuehrung desselbenInfo
- Publication number
- DE2601139A1 DE2601139A1 DE19762601139 DE2601139A DE2601139A1 DE 2601139 A1 DE2601139 A1 DE 2601139A1 DE 19762601139 DE19762601139 DE 19762601139 DE 2601139 A DE2601139 A DE 2601139A DE 2601139 A1 DE2601139 A1 DE 2601139A1
- Authority
- DE
- Germany
- Prior art keywords
- palladium
- salts
- catalyst
- electropositive
- chloride
- 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.)
- Withdrawn
Links
- 239000003054 catalyst Substances 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000002253 acid Substances 0.000 title 1
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 title 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 54
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 32
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 30
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- 229910052760 oxygen Inorganic materials 0.000 claims description 27
- 229910052763 palladium Inorganic materials 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 239000002585 base Substances 0.000 claims description 21
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 20
- 150000003839 salts Chemical class 0.000 claims description 19
- 229910021529 ammonia Inorganic materials 0.000 claims description 16
- 150000002739 metals Chemical class 0.000 claims description 16
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 claims description 13
- -1 aliphatic alcohols Chemical class 0.000 claims description 12
- 229910021592 Copper(II) chloride Inorganic materials 0.000 claims description 10
- 235000006408 oxalic acid Nutrition 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- MUJIDPITZJWBSW-UHFFFAOYSA-N palladium(2+) Chemical class [Pd+2] MUJIDPITZJWBSW-UHFFFAOYSA-N 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims description 6
- 150000004820 halides Chemical class 0.000 claims description 6
- 125000005907 alkyl ester group Chemical group 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 150000002823 nitrates Chemical class 0.000 claims description 3
- 159000000001 potassium salts Chemical class 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 2
- 150000003973 alkyl amines Chemical group 0.000 claims 2
- 150000002815 nickel Chemical class 0.000 claims 2
- 239000000376 reactant Substances 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 26
- 229910002090 carbon oxide Inorganic materials 0.000 description 26
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- LOMVENUNSWAXEN-UHFFFAOYSA-N Methyl oxalate Chemical compound COC(=O)C(=O)OC LOMVENUNSWAXEN-UHFFFAOYSA-N 0.000 description 17
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 16
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical compound CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 6
- 239000007795 chemical reaction product Substances 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 6
- 238000004821 distillation Methods 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- WYACBZDAHNBPPB-UHFFFAOYSA-N diethyl oxalate Chemical compound CCOC(=O)C(=O)OCC WYACBZDAHNBPPB-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 150000003901 oxalic acid esters Chemical class 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- JRMAQQQTXDJDNC-UHFFFAOYSA-M 2-ethoxy-2-oxoacetate Chemical compound CCOC(=O)C([O-])=O JRMAQQQTXDJDNC-UHFFFAOYSA-M 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000021523 carboxylation Effects 0.000 description 1
- 238000006473 carboxylation reaction Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000004675 formic acid derivatives Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 150000004053 quinones Chemical class 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/10—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide
- C07C51/145—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide with simultaneous oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT19339/75A IT1028419B (it) | 1975-01-17 | 1975-01-17 | Processo per la preparazione di acido ossalico e suoi esteeri |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2601139A1 true DE2601139A1 (de) | 1976-07-22 |
Family
ID=11156866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762601139 Withdrawn DE2601139A1 (de) | 1975-01-17 | 1976-01-14 | Verfahren zur herstellung von oxalsaeure beziehungsweise deren alkylestern und katalysator zur durchfuehrung desselben |
Country Status (10)
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3513255A1 (de) * | 1985-04-13 | 1986-10-23 | Röhm GmbH, 6100 Darmstadt | Verfahren zur herstellung von oxalsaeurediestern |
| US4620029A (en) * | 1983-11-23 | 1986-10-28 | Rohm Gmbh | Method for making oxalic acid diesters |
| US5354887A (en) * | 1989-12-13 | 1994-10-11 | Rhone-Poulenc Chimie | Preparation of hexene-1,6-dioic acids |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056692B2 (ja) * | 1977-09-29 | 1985-12-11 | 三菱瓦斯化学株式会社 | カルボン酸及び／又はそのエステル類の製造方法 |
| US4614832A (en) * | 1979-12-17 | 1986-09-30 | Chevron Research Company | Dialkyl oxalates from carbon monoxide and an alcohol |
| US4390509A (en) * | 1980-03-10 | 1983-06-28 | Agrico Chemical Company | Process for manufacturing ammonium phosphate utilizing an oxalic acid acidulating process |
| US4379939A (en) * | 1980-04-04 | 1983-04-12 | Tennessee Valley Authority | Preparation of nitrogen fertilizers from oxalate esters prepared by the oxidative carbonylation of alcohols over noble metal catalysts utilizing regenerable 2,5-cyclohexadiene-1,4-dione oxidants |
| US4281174A (en) * | 1980-04-21 | 1981-07-28 | Chevron Research Company | Oxidative carbonylation of alcohols to produce dialkyl oxalates |
| US4571435A (en) * | 1980-06-30 | 1986-02-18 | Tennessee Valley Authority | Preparation of nitrogen fertilizers from oxalate esters prepared by the oxidative carbonylation of alcohols over noble metal catalysts utilizing regenerable 2,5-cyclohexadiene-1,4-dione oxidants |
| US4523029A (en) * | 1982-06-15 | 1985-06-11 | Chevron Research Company | Oxidative carbonylation of alcohols to produce dialkyl oxalates |
| US4468523A (en) * | 1982-06-16 | 1984-08-28 | Atlantic Richfield Company | Synthesis of dialkyl oxalates by the heterogeneously catalyzed oxidative carbonylation of alcohols |
| US4454342A (en) * | 1982-07-13 | 1984-06-12 | Atlantic Richfield Company | Preparation of dialkyl oxalates using a heterogeneous Pd-V-P catalyst for the oxidative carbonylation of alcohols |
| US4447638A (en) * | 1982-08-02 | 1984-05-08 | Atlantic Richfield Company | Preparation of dialkyl oxalates by the oxidative carbonylation of alcohols with a heterogeneous Pd-V-P-Ti containing catalyst system |
| US4447639A (en) * | 1982-08-06 | 1984-05-08 | Atlantic Richfield Company | Oxidative carbonylation of alcohols to dialkyl oxalates using a heterogeneous iron promoted Pd-V-P catalyst |
| US4451666A (en) * | 1982-08-06 | 1984-05-29 | Atlantic Richfield Company | Synthesis of oxalate esters by the oxidative carbonylation of alcohols with a heterogeneous manganese promoted Pd-V-P catalyst |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3393136A (en) * | 1965-09-28 | 1968-07-16 | Union Oil Co | Preparation of oxalates |
| DE2213435A1 (de) * | 1972-03-20 | 1973-10-11 | Roehm Gmbh | Verfahren zur herstellung von oxalsaeure und estern dieser saeure |
| US3994960A (en) * | 1974-04-05 | 1976-11-30 | Ube Industries, Ltd. | Process for preparing dialkyl oxalates |
| US4005128A (en) * | 1975-04-02 | 1977-01-25 | Atlantic Richfield Company | Process for the preparation of oxalate esters |
| US4005129A (en) * | 1975-06-04 | 1977-01-25 | Atlantic Richfield Company | Process for the oxidative carbonylation of alcohols and method for the reoxidation of reduced copper salts produced by the oxidation carbonylation |
| US4005131A (en) * | 1976-01-02 | 1977-01-25 | Atlantic Richfield Company | Synthesis of oxalate esters from carbon monoxide and acetals or ketals |
-
1975
- 1975-01-17 IT IT19339/75A patent/IT1028419B/it active
-
1976
- 1976-01-13 NL NL7600283A patent/NL7600283A/xx not_active Application Discontinuation
- 1976-01-14 DE DE19762601139 patent/DE2601139A1/de not_active Withdrawn
- 1976-01-15 GB GB1524/76A patent/GB1537853A/en not_active Expired
- 1976-01-15 CA CA243,898A patent/CA1068297A/en not_active Expired
- 1976-01-15 FR FR7600933A patent/FR2297833A1/fr active Granted
- 1976-01-15 US US05/649,235 patent/US4118589A/en not_active Expired - Lifetime
- 1976-01-16 ES ES444356A patent/ES444356A1/es not_active Expired
- 1976-01-16 JP JP51003273A patent/JPS5198209A/ja active Pending
- 1976-01-16 BE BE163566A patent/BE837639A/xx not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620029A (en) * | 1983-11-23 | 1986-10-28 | Rohm Gmbh | Method for making oxalic acid diesters |
| DE3513255A1 (de) * | 1985-04-13 | 1986-10-23 | Röhm GmbH, 6100 Darmstadt | Verfahren zur herstellung von oxalsaeurediestern |
| US4713483A (en) * | 1985-04-13 | 1987-12-15 | Rohm Gmbh Chemische Fabrik | Process for the production of oxalic acid diesters |
| US5354887A (en) * | 1989-12-13 | 1994-10-11 | Rhone-Poulenc Chimie | Preparation of hexene-1,6-dioic acids |
Also Published As
| Publication number | Publication date |
|---|---|
| BE837639A (fr) | 1976-07-16 |
| FR2297833B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-06-22 |
| NL7600283A (nl) | 1976-07-20 |
| CA1068297A (en) | 1979-12-18 |
| US4118589A (en) | 1978-10-03 |
| JPS5198209A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-08-30 |
| GB1537853A (en) | 1979-01-04 |
| FR2297833A1 (fr) | 1976-08-13 |
| ES444356A1 (es) | 1977-05-16 |
| IT1028419B (it) | 1979-01-30 |
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