DE1768458C3 - - Google Patents
Info
- Publication number
- DE1768458C3 DE1768458C3 DE19681768458 DE1768458A DE1768458C3 DE 1768458 C3 DE1768458 C3 DE 1768458C3 DE 19681768458 DE19681768458 DE 19681768458 DE 1768458 A DE1768458 A DE 1768458A DE 1768458 C3 DE1768458 C3 DE 1768458C3
- Authority
- DE
- Germany
- Prior art keywords
- alcohol
- oxidation
- adduct
- water
- carbonyl sulfide
- 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.)
- Expired
Links
- 230000003647 oxidation Effects 0.000 claims description 35
- 238000007254 oxidation reaction Methods 0.000 claims description 35
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 claims description 32
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 28
- 239000007800 oxidant agent Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 150000003512 tertiary amines Chemical class 0.000 claims description 4
- 150000003868 ammonium compounds Chemical class 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 3
- 235000019441 ethanol Nutrition 0.000 claims 13
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 3
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 claims 2
- 238000000354 decomposition reaction Methods 0.000 claims 2
- 239000007858 starting material Substances 0.000 claims 2
- 208000000260 Warts Diseases 0.000 claims 1
- OKUPEXIKHIZKEO-UHFFFAOYSA-N [C].C(OCC)(OCC)=O Chemical compound [C].C(OCC)(OCC)=O OKUPEXIKHIZKEO-UHFFFAOYSA-N 0.000 claims 1
- 150000001298 alcohols Chemical class 0.000 claims 1
- 125000003545 alkoxy group Chemical group 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- 125000004432 carbon atom Chemical group C* 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000001627 detrimental effect Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 229960004592 isopropanol Drugs 0.000 claims 1
- 231100000614 poison Toxicity 0.000 claims 1
- 230000007096 poisonous effect Effects 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 claims 1
- 230000036632 reaction speed Effects 0.000 claims 1
- 201000010153 skin papilloma Diseases 0.000 claims 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 21
- 239000002250 absorbent Substances 0.000 description 13
- 239000006185 dispersion Substances 0.000 description 13
- 230000002745 absorbent Effects 0.000 description 11
- 235000011132 calcium sulphate Nutrition 0.000 description 11
- 229940095672 calcium sulfate Drugs 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Substances Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 3
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 2
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 2
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229960003280 cupric chloride Drugs 0.000 description 2
- JMPVESVJOFYWTB-UHFFFAOYSA-N dipropan-2-yl carbonate Chemical compound CC(C)OC(=O)OC(C)C JMPVESVJOFYWTB-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- SUQFCVOFANWOMT-UHFFFAOYSA-N 2,2-dioxo-1,3,2-dioxathietan-4-one Chemical compound O=C1OS(=O)(=O)O1 SUQFCVOFANWOMT-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- KWACJELSWOHYJK-UHFFFAOYSA-N C(=O)=S.CO.CN(C)C Chemical compound C(=O)=S.CO.CN(C)C KWACJELSWOHYJK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229910021585 Nickel(II) bromide Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000005910 alkyl carbonate group Chemical group 0.000 description 1
- 229940095564 anhydrous calcium sulfate Drugs 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 235000012216 bentonite Nutrition 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- JEZHBSJTXKKFMV-UHFFFAOYSA-N calcium nickel Chemical compound [Ca].[Ni] JEZHBSJTXKKFMV-UHFFFAOYSA-N 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- -1 dimethyl carbonal Chemical compound 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- CXHHBNMLPJOKQD-UHFFFAOYSA-M methyl carbonate Chemical compound COC([O-])=O CXHHBNMLPJOKQD-UHFFFAOYSA-M 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- IPLJNQFXJUCRNH-UHFFFAOYSA-L nickel(2+);dibromide Chemical compound [Ni+2].[Br-].[Br-] IPLJNQFXJUCRNH-UHFFFAOYSA-L 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/04—Preparation of esters of carbonic or haloformic acids from carbon dioxide or inorganic carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyesters Or Polycarbonates (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37240964A | 1964-06-03 | 1964-06-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1768458A1 DE1768458A1 (de) | 1972-01-05 |
DE1768458B2 DE1768458B2 (enrdf_load_stackoverflow) | 1974-05-16 |
DE1768458C3 true DE1768458C3 (enrdf_load_stackoverflow) | 1974-12-19 |
Family
ID=23467985
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19651518308 Expired DE1518308C3 (de) | 1964-06-03 | 1965-05-26 | Verfahren zur Herstellung von AmmonJum-O-alkylcarbonaten und -thiolcarbonaten |
DE19681768458 Granted DE1768458A1 (de) | 1964-06-03 | 1968-05-15 | Verfahren zur Herstellung von Dialkylcarbonaten aus einer Ammoniumverbindung eines Kohlensaeurehalbesters |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19651518308 Expired DE1518308C3 (de) | 1964-06-03 | 1965-05-26 | Verfahren zur Herstellung von AmmonJum-O-alkylcarbonaten und -thiolcarbonaten |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE663796A (enrdf_load_stackoverflow) |
DE (2) | DE1518308C3 (enrdf_load_stackoverflow) |
ES (1) | ES311889A1 (enrdf_load_stackoverflow) |
GB (1) | GB1061675A (enrdf_load_stackoverflow) |
NL (1) | NL6506759A (enrdf_load_stackoverflow) |
-
1965
- 1965-03-25 GB GB1268765A patent/GB1061675A/en not_active Expired
- 1965-04-14 ES ES0311889A patent/ES311889A1/es not_active Expired
- 1965-05-12 BE BE663796D patent/BE663796A/xx unknown
- 1965-05-26 DE DE19651518308 patent/DE1518308C3/de not_active Expired
- 1965-05-28 NL NL6506759A patent/NL6506759A/xx unknown
-
1968
- 1968-05-15 DE DE19681768458 patent/DE1768458A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
DE1518308C3 (de) | 1975-03-06 |
DE1518308A1 (de) | 1969-07-24 |
ES311889A1 (es) | 1965-08-16 |
GB1061675A (en) | 1967-03-15 |
BE663796A (enrdf_load_stackoverflow) | 1965-09-01 |
DE1768458B2 (enrdf_load_stackoverflow) | 1974-05-16 |
DE1768458A1 (de) | 1972-01-05 |
NL6506759A (enrdf_load_stackoverflow) | 1965-12-06 |
DE1518308B2 (de) | 1974-07-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2823660A1 (de) | Verfahren zur herstellung eines alkenylesters von carbonsaeuren | |
DE3308922A1 (de) | Verfahren zur herstellung von fettsaeureestern der ascorbinsaeure | |
DE2735465C2 (de) | Wismuthaltige, sphäroidische Agglomerate von Malachitteilchen, Verfahren zu ihrer Herstellung und ihre Verwendung | |
DE1768458C3 (enrdf_load_stackoverflow) | ||
DE1914425C3 (de) | Herstellung von elementarem Schwefel durch Umsetzung von Schwefelwasserstoff mit Schwefeldioxid | |
CH646257A5 (de) | Karl-fischer-reagenz. | |
DE60216117T2 (de) | Verfahren zur herstellung von hexafluoraceton und dessen hydrat | |
DE3034433A1 (de) | Verfahren zur herstellung tertiaerer amine | |
DE2042396A1 (de) | Verfahren zur Herstellung von Äthylenoxyd | |
DE2841913C2 (de) | Verfahren zur Herstellung von 2,2,4-Trimethyl-3-hydroxypentylisobutyrat | |
DE2724189C3 (de) | Verfahren zur Herstellung von Äthylenglykol | |
DE1495397A1 (de) | Verfahren zur Herstellung von hochmolekularen Polyestern der Kohlensaeure | |
DE2713345C2 (de) | Verfahren zur Herstellung von reinem Brom | |
DE2759261C3 (de) | Mittel und Verfahren zur Kontrolle von Korrosion und Schaumbildung in Systemen zur Acrylnitrilerzeugung | |
DE69603110T2 (de) | Verfahren zur Entfernung von Diol als Verunreinigung in zyklischen Carbonsäureestern | |
DE1543560B1 (de) | Verfahren zur Herstellung von 1-Oxa-3-thia-cyclopentan-2-thionen | |
DE2061538B2 (de) | Verfahren zur herstellung von kobalt (iii)-bis-salicylaldehydaethylendiiminat -komplexen | |
EP0033775A1 (de) | Verfahren zur Abtrennung von Sulfonsäuren aus dem bei der Umsetzung von Paraffinen mit Schwefeldioxid, Sauerstoff und Wasser in Gegenwart von UV-Licht erhaltenem Reaktionsprodukt | |
DE2221792C3 (de) | Verfahren zur Herstellung von 4-Methyl-l-penten durch Dimerisieren von Propylen | |
DE1768405C3 (de) | Verfahren zur Herstellung von Peressigsäure | |
DE1618824C (de) | Verfahren zur Herstellung von Oxalsäure | |
DE1720519C3 (de) | Verfahren zur Herstellung von Polyestern | |
DE1720519B2 (de) | Verfahren zur herstellung von polyestern | |
DE2362313C3 (de) | Verfahren zur Herstellung von Diaminomaleinsäuredinitril | |
AT302340B (de) | Verfahren zur Herstellung von 1,2-Di-N-morpholinoäthan |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 | ||
8339 | Ceased/non-payment of the annual fee |