DE2144920A1 - - Google Patents
Info
- Publication number
- DE2144920A1 DE2144920A1 DE19712144920 DE2144920A DE2144920A1 DE 2144920 A1 DE2144920 A1 DE 2144920A1 DE 19712144920 DE19712144920 DE 19712144920 DE 2144920 A DE2144920 A DE 2144920A DE 2144920 A1 DE2144920 A1 DE 2144920A1
- Authority
- DE
- Germany
- Prior art keywords
- cobalt
- reaction
- manganese
- metal
- catalyst
- 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
Links
- 238000007254 oxidation reaction Methods 0.000 claims description 77
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 claims description 74
- 238000000034 method Methods 0.000 claims description 68
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 60
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 claims description 56
- 238000006243 chemical reaction Methods 0.000 claims description 51
- 229910017052 cobalt Inorganic materials 0.000 claims description 37
- 239000010941 cobalt Substances 0.000 claims description 37
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 37
- 239000003054 catalyst Substances 0.000 claims description 35
- LPNBBFKOUUSUDB-UHFFFAOYSA-N p-toluic acid Chemical compound CC1=CC=C(C(O)=O)C=C1 LPNBBFKOUUSUDB-UHFFFAOYSA-N 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 31
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 30
- 239000007789 gas Substances 0.000 claims description 25
- QSSJZLPUHJDYKF-UHFFFAOYSA-N methyl 4-methylbenzoate Chemical compound COC(=O)C1=CC=C(C)C=C1 QSSJZLPUHJDYKF-UHFFFAOYSA-N 0.000 claims description 19
- REIDAMBAPLIATC-UHFFFAOYSA-M 4-methoxycarbonylbenzoate Chemical compound COC(=O)C1=CC=C(C([O-])=O)C=C1 REIDAMBAPLIATC-UHFFFAOYSA-M 0.000 claims description 17
- 150000001869 cobalt compounds Chemical class 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 238000005886 esterification reaction Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 9
- 229910001882 dioxygen Inorganic materials 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 150000002697 manganese compounds Chemical class 0.000 claims description 8
- 239000011541 reaction mixture Substances 0.000 claims description 7
- 239000007791 liquid phase Substances 0.000 claims description 6
- 150000002739 metals Chemical class 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000000047 product Substances 0.000 description 68
- 230000003647 oxidation Effects 0.000 description 43
- 239000012535 impurity Substances 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 24
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 22
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 21
- 239000011572 manganese Substances 0.000 description 20
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 14
- 239000002253 acid Substances 0.000 description 13
- -1 bromine compound Chemical class 0.000 description 12
- 229940011182 cobalt acetate Drugs 0.000 description 12
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 12
- 238000002845 discoloration Methods 0.000 description 12
- 239000013078 crystal Substances 0.000 description 11
- 230000032050 esterification Effects 0.000 description 11
- 229910052748 manganese Inorganic materials 0.000 description 11
- 229940071125 manganese acetate Drugs 0.000 description 11
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000009835 boiling Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- 235000014113 dietary fatty acids Nutrition 0.000 description 8
- 229930195729 fatty acid Natural products 0.000 description 8
- 239000000194 fatty acid Substances 0.000 description 8
- 150000004665 fatty acids Chemical class 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 125000004429 atom Chemical group 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 6
- FEIOASZZURHTHB-UHFFFAOYSA-N methyl 4-formylbenzoate Chemical compound COC(=O)C1=CC=C(C=O)C=C1 FEIOASZZURHTHB-UHFFFAOYSA-N 0.000 description 6
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 5
- 229910052794 bromium Inorganic materials 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- GOUHYARYYWKXHS-UHFFFAOYSA-N 4-formylbenzoic acid Chemical compound OC(=O)C1=CC=C(C=O)C=C1 GOUHYARYYWKXHS-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- WYYQVWLEPYFFLP-UHFFFAOYSA-K chromium(3+);triacetate Chemical compound [Cr+3].CC([O-])=O.CC([O-])=O.CC([O-])=O WYYQVWLEPYFFLP-UHFFFAOYSA-K 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 4
- 150000002366 halogen compounds Chemical class 0.000 description 4
- SGGOJYZMTYGPCH-UHFFFAOYSA-L manganese(2+);naphthalene-2-carboxylate Chemical compound [Mn+2].C1=CC=CC2=CC(C(=O)[O-])=CC=C21.C1=CC=CC2=CC(C(=O)[O-])=CC=C21 SGGOJYZMTYGPCH-UHFFFAOYSA-L 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- KMTDMTZBNYGUNX-UHFFFAOYSA-N 4-methylbenzyl alcohol Chemical compound CC1=CC=C(CO)C=C1 KMTDMTZBNYGUNX-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 150000002736 metal compounds Chemical class 0.000 description 3
- 229940078494 nickel acetate Drugs 0.000 description 3
- FXLOVSHXALFLKQ-UHFFFAOYSA-N p-tolualdehyde Chemical compound CC1=CC=C(C=O)C=C1 FXLOVSHXALFLKQ-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000272517 Anseriformes Species 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 235000010233 benzoic acid Nutrition 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 150000001845 chromium compounds Chemical class 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910021446 cobalt carbonate Inorganic materials 0.000 description 2
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- QMZIDZZDMPWRHM-UHFFFAOYSA-L manganese(2+);dibenzoate Chemical compound [Mn+2].[O-]C(=O)C1=CC=CC=C1.[O-]C(=O)C1=CC=CC=C1 QMZIDZZDMPWRHM-UHFFFAOYSA-L 0.000 description 2
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 2
- 150000002816 nickel compounds Chemical class 0.000 description 2
- 235000019260 propionic acid Nutrition 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 description 1
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 1
- BWLBGMIXKSTLSX-UHFFFAOYSA-N 2-hydroxyisobutyric acid Chemical compound CC(C)(O)C(O)=O BWLBGMIXKSTLSX-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- BYHQTRFJOGIQAO-GOSISDBHSA-N 3-(4-bromophenyl)-8-[(2R)-2-hydroxypropyl]-1-[(3-methoxyphenyl)methyl]-1,3,8-triazaspiro[4.5]decan-2-one Chemical compound C[C@H](CN1CCC2(CC1)CN(C(=O)N2CC3=CC(=CC=C3)OC)C4=CC=C(C=C4)Br)O BYHQTRFJOGIQAO-GOSISDBHSA-N 0.000 description 1
- REIDAMBAPLIATC-UHFFFAOYSA-N 4-methoxycarbonylbenzoic acid Chemical compound COC(=O)C1=CC=C(C(O)=O)C=C1 REIDAMBAPLIATC-UHFFFAOYSA-N 0.000 description 1
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 206010056740 Genital discharge Diseases 0.000 description 1
- WRQNANDWMGAFTP-UHFFFAOYSA-N Methylacetoacetic acid Chemical compound COC(=O)CC(C)=O WRQNANDWMGAFTP-UHFFFAOYSA-N 0.000 description 1
- 101100071254 Mus musculus Hnrnpul2 gene Proteins 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001558 benzoic acid derivatives Chemical class 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 description 1
- 239000001639 calcium acetate Substances 0.000 description 1
- 235000011092 calcium acetate Nutrition 0.000 description 1
- 229960005147 calcium acetate Drugs 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- IYSGJCJSRBFZSZ-UHFFFAOYSA-N carbon monoxide;manganese;5-methylcyclopenta-1,3-diene Chemical compound [Mn].[O+]#[C-].[O+]#[C-].[O+]#[C-].C[C-]1C=CC=C1 IYSGJCJSRBFZSZ-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- GAYAMOAYBXKUII-UHFFFAOYSA-L cobalt(2+);dibenzoate Chemical compound [Co+2].[O-]C(=O)C1=CC=CC=C1.[O-]C(=O)C1=CC=CC=C1 GAYAMOAYBXKUII-UHFFFAOYSA-L 0.000 description 1
- FJDJVBXSSLDNJB-LNTINUHCSA-N cobalt;(z)-4-hydroxypent-3-en-2-one Chemical compound [Co].C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O FJDJVBXSSLDNJB-LNTINUHCSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 238000000695 excitation spectrum Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 239000000727 fraction Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 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
- 229940095102 methyl benzoate Drugs 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 125000005609 naphthenate group Chemical group 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000008096 xylene Substances 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
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/39—Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester
Description
enthält,
" 245,1 X Ί U X 54,9 ■» 0,408
3,62
BeiSOiel- Kr". |
1 | Zugesetzte Menge an Katalysator- Bestandteilen (inK-Atom) |
1 | Mn | Wirksame Produkt ausbeute |
Verbrennungs verlust • ■ (Mol#) |
|
2 | Co | 0,9996 | 0 | ||||
3 | 0,999 | 0,0004 | 88,1 | 2,1 | |||
Vergleichs beispiel 1 |
4 | 0,997 | 0,001 | 89,1 | 2,0 | ||
ro | Vergleichs beispiel 2 |
5 | 0,99 | 0,003 | 90,0 | 2,0 | |
CD co |
Beispiel | 6 | 0,97 | 0,01 | •91,5 | 1,8 | |
co | Beispiel | 7 | 0,9 | 0,03 | , 92,4 | 1,5 | |
cn | Beispiel | 8 | 0,8 | 0,1 | 92,6 | 1,4 | |
Beispiel | 9 | 0,75 | 0,2 | 92,3 | 1,5 | ||
cn | Beispiel | 10 | 0,7 | 0,25 | 92,0 | 1,6 | |
CD | Beispiel | Vergleichs- b ei so i el 3 |
0,5 | 0,3 | 91,6 | 1,7 | |
Eei spiel | 0,25 | 0,5 | 90,5 | 1,8 | |||
Beispiel | 0 | 0,75 | 90,3 | 1,8 | |||
Beispiel | 1 | 88,9 | 1,8 | ||||
Beispiel | 86,5 | 2,9 |
CHazen-Zahl)
Fluoreszenz intensität |
Induktions
zeitraum (Min.) |
97 | unterhalb 5 |
92 | unterhalb 5 |
75 | unterhalb 5 |
51 | unterhalb 5 |
43 | unterhalb 5 |
33 | unterhalb 5 |
40 | unterhalb 5^ |
42 | unterhalb 5** |
47 | unterhalb 5 |
60 | unterhalb 5 |
65 | unterhalb 5 |
72 | unterhalb 5 |
Tabelle II | 2H4920 | |
Gehalt an p-Kresol der ersten Fraktion (ppm) |
||
4-10 | Fluoreszenz intensität der DMT-Kristalle (*) |
|
Vergleichst» ei spiel 1 | 280 | 58 |
Beispiel 2 | 200 | 32 |
Beispiel 4- | 290 | 22 |
Beispiel 9 | 450 | 36 |
Vergleichs"beispiel 3 | 65 | |
Tabelle III | Mn | 82,2 | 2144920 | Fluores zenzinten si tat (%) |
|
Katalysator- Wirksame konzentration Produkt- im Oxidations- ausbeute produkt (Mol%) (ppm) |
O | 90,0 | |||
Beispiel Nr. |
Co | 1 | 92,8 | 'Verfärbungs grad Diazen-Zahl) |
100 |
116 | 3 | 93,0 | 51 | ||
Vergleiehs- ΐ> ei spiel 4 |
118 | 11 | 92,8 | 150 | 48 |
Beispiel 11 | 114 | 29 | 92,0 | 50 | 39 |
Beispiel 12 | 102 | 57 | 91,8 | 40 | 41 . |
Beispiel 13 | 83 | 85 | 89,7 | 1 40 | 43 |
Beispiel 14 | 56 | 110 | 88,8 | 40 | 45 |
Beispiel 15 | 28 | 115 | 85,8 | 40 | 53 |
Beispiel 16 | 6 | 113 | 40 | 58 | |
Beispiel 17 | 2 | 50 | 86 | ||
Beispiel 18 | O | 50 | |||
Vergleichs- beispiel 5 |
110 | ||||
Tabelle IV | Fluoreszenz- intensität der DMT-Kri- stalle (#) |
|
Gehalt an p-Kresol in der ersten Frak tion (ppm) |
62 | |
Vergleichsbeispiel | 4 320 | 31 |
Beispiel 11 | 180 | 28 |
Beispiel 12 | 150 | 21 |
Beispiel 13 | 140 | 25 |
Beispiel 14 | 140 | 29 |
Beispiel 15 | 160 | 28 |
Beispiel 16 | 180 | 33 |
Beispiel 17 | 200 | 35 |
Beispiel 18 | 210 | 54 |
Vergleichsbeispiel | 5 340 | Beispiele 19 bis 23 und Verp;leichsbeispiele 6 und 7 |
Beispiel Nr. |
Zugesetzte Menge an Katalysator bestandteilen (mg-Atom) |
Mn | 0 | Ausbeute an wirksamen Pro dukten (Mol#) |
Verfärbungs grad CHazen-Zahl) |
Go | 0,02 | ||||
Vergleichs beispiel 6 |
1 | 0,05 | 65,3 | 250 | |
Beispiel 19 | 0,98 | 0,25 | 87,0 | 60 | |
Beispiel 20 | 0,95 | 0,50 | 89,0 | 40 | |
Beispiel 21 | 0,75 | 0,75 | 88,5 | 50 | |
Beispiel 22 | 0,50 | 1 | 88,2 | 50 | |
Beispiel 23 | 0,25 | 87,8 | 50 | ||
Vergleichs beispiel 7 |
0 | 83,1 | 100 |
temperatur druck o
(0O) (kg/cm^)
Vergleichs beispiel 8 |
130 | 6 | 2,2 | fm | 30 | 27 |
Beispiel 24 | 150 | 6 | 3,5 | 91,3 | 20 | 57 |
Beispiel 25 | 180 | 6 | 2,5 | 92,6 | 50 | 100 . |
Beispiel 26 | 200 | 6 | 2,0 | 88,1 | 70 | 111 |
Beispiel 27 | 200 | 10 | 2,0 | 86,2 | 90 | 115 |
Beispiel 28 | 240 | 10 | 2,0 | 83,8 | . 250 | 118 |
Vergleichs- beispiel 9 |
250 | 10 | 2,0 | 75,2 | VerKleichsbeispiele 10 | 108 |
Beispiele | 29 bis 31 und | bis 12 |
Vergleichs- Kobalt | Tabelle VII | 0,03 | Ausbeute an | |
Beispiel Co-Bestandteil | beispiel 10 Acetyl- 1,0 | Mn-Bestandteil | wirksamen Pro- | |
h"* Art Zugesetzte | acetonat | Art .. - Zugesetzte ■ | \JL\i l\ V wXJ· | |
K enge | Vergleichs- Kobalt | Menge | — - | (Mol%) |
(mg-Atom) | beispiel 11 Acetyl- | £mg-Atom) | ||
1^ " acetonat 0,97 | Mangan- | 88,0 | ||
co Beispiel 29 Kobalt | carbonat 0,03 | |||
co Acetyl- | ||||
~* acetonat 0,97 / | ||||
CD | 87,9 | |||
-* Beispiel 50 Kobalt | - - | |||
-^ Acetylacet- | ||||
2 onat 0,97 | ||||
Vergleichs- Basisches | Mangan- | 92,6 | ||
beispiel 12 Kobalt- | AcetyIacetonat 0,03 | |||
carbonat 1,0 | Metallisches | |||
Beispiel 31 Basisches | Mangen | 92,4 | ||
Kobalt- | ||||
carbonat 0,97 | ||||
87,2 | ||||
92,0 |
CHazen-Zahl)
samen Pro- verlust CHazen-Zahl) dukt . (Mol%)
Konzen tration an Co + Mn im Oxi dations- produkt (ppm) |
52 58 | Tabelle IX | Verfär bungsgrad (Hazen- Zahl) |
Säurezahl- Zunahme wert (Std.~1) |
und VerRleichsbeispiel 19 | Verbren nungsver lust |
|
Beispiel Nr. |
Vergleichs beispiel 17 51 |
55 119 | Ausbeute an wirk samen Produk ten |
ober halb 500 |
65 | 5,2 | |
Beispiel | 54 252 | 78,5 | 100 | 98 | 5,9 | ||
Beispiel | 55 481 | 85,9 | 40 | 108 | 2,6 | ||
Beispiel | 56 1210 | 90,4 | 20 | 98 | 2,1. | ||
Beispiel | Vergleichs- 0440 beispiel 18 |
91,2 | 40 | 86 | 2,8 | ||
Beispiel | 89,1 | 60 | 71 | 4,2 | |||
Beispiel 37 | 85,1 | 100 | 58 | 8,1 | |||
75,0 |
Beispiel 57 | Vergleichs beispiel 19 |
|
Ausbeute an wirksamen Produkten (Mol%) |
95,2 | 88,0 |
Gebildete Menge an Oxidationsprodukt (Gew.teile; |
561 | 132 |
Verfärbungsgrad (Hazen-Zahl; |
20 | 70 |
Fluoreszenzintensität (%) |
55 | 89 |
Heak- tions- tempe- ratur (0C) |
Reak tions zeit (Std.) |
Tabelle XI | t | 0 | Ausbeute an wirk samen Pro dukten |
Verfär bungsgrad •(Hazen- Zahl) |
- | Säurezahl- Zunahme wert (Std."1) |
Indukti'ons- zeiträum • (Min.) |
|
Vergleichs beispiel No. |
140 | 4,5 | Zugesetzte Menge an Katalysator-Bestandteilen Co(mg-Atom) Mn(mg-Atom) |
0,55 | 87,5 | 90 | 58 | unter halb 5 |
||
20 | 140 | 4,5 | 0,55 | 0 | 81,0 | 150 | 24 | 251 | ||
21 | 150 | 5,5 | 0 | 0,55 | 86,8 | 100 | 62 | unter halb 5 |
||
ro 22 | 150 | 5,5 | 0,55 | 82,5 | 140 | 50 | 128 | |||
S 25 CX) |
0 I |
|||||||||
(D | ||||||||||
I7B8 | ||||||||||
Claims (6)
- Patentansprüche/ Verfahren zur Herstellung von p-Toluylsäure und Monomethylterephthalat durch Oxidation eines Gemisches von p-Xylol und Methyl-p-toluat in einem Gewichtsverhältnisvon 2 v, 1 bis,, 1_J 4· mit molekularem Sauerstoff oder einem Sauerstoffmolekularenj'enthaltenden Gas in flüssiger Phase, dadurch gekennzeichnet, dass(1) ein Katalysator im Oxidationsreaktion-System angewandt wird, wobei dieser Katalysator aus(A) einem Bestandteil A, der aus Manganmetall und/oder einer in dem Eeaktions-System löslichen Mangan-Verbindung besteht, und(B) einem Bestandteil B, der aus Kobaltmetall und/oder einer in dem Eeaktions-System löslichen Kobalt-Verbindung besteht, wobei(C) das g~Atomverhältnis von Manganmetall zu Kobaltmetall 0,1 : 99,9 bis 99 : 1 beträgt, falls die Bestandteile A und B als Manganmetall bzw. Kobaltmetall berechnet werden, besteht,(2) die Konzentration des Katalysator so eingestellt wird, dass, falls die Bestandteile A und B als Manganmetall und Kobaltmetall berechnet werden, die Gesamtmenge dieser Metalle 50 bis 1500 ppm, auf das Gewicht bezogen und bezogen auf die Gesamtmenge des ReaktionsgemiSClIeSx beträgt und(j) die Oxidationsreaktion bei einer Temperatur im Bereichvon 140 bis 240° C durchgeführt wird.
- 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Oxidationsreaktion bei einer Temperatur im Bereich von 160 bis 220° G in Gegenwart des Katalysators ausgeführt wird, worin das g-Atomverhältnis von Manganmetall zu Kobaltmetall 0,1 : 99,9 bis 99 : 1 beträgt.2 0 9 8 167 T 7 5 8- Jfir-2H4920
- 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Oxidationsreaktion in Gegenwart des Katalysator ausgeführt wird, worin das g~Atomverhältnis von Manganmetall zu Kobaltmetall 1 : 99 bis 90 : 10 beträgt.
- 4-. Verfahren nach Anspruch 1 bis 3> dadurch gekennzeichnet, dass die Oxidationsreaktion bei Temperaturen im Bereich von 170 bis 200° C durchgeführt wird.
- 5. Verfahren nach Anspruch 1 bis 4-, dadurch gekennzeichnet, dass eine solche Konzentration öbs Katalysators angewandt wird, dass, falls die Bestandteile A und B als Manganmetall und Kobaltmetall berechnet werden, die Gesamtmenge dieser Metalle 80 bis 500 ppm, bezogen auf die Gesamtmenge des Reaktionsgemisches, beträgt.
- 6. Verfahren nach Anspruch 1 bis 5» dadurch gekennzeichnet, dass ein Gemisch, welches hauptsä-chlich aus p-Toluylsäure und Monomethylterephthalat besteht und nach dem Verfahren der Ansprüche 1 bis 5 erhalten wurde, mit Methanol verestert wird, das erhaltene Dimethylterephthalat abgetrennt wird und die hauptsächlich aus Methyl-ptoluat bestehende Veresterungsreaktions-Eückstandsflüssigkeit zurückgeführt wird und als Material zur Oxidationsreaktion zusammen mit frischem p-Xylol verwendet wird.2098 16/17 58 :ORIGINAL INSPECTED
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7874270A JPS4927574B1 (de) | 1970-09-08 | 1970-09-08 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2144920A1 true DE2144920A1 (de) | 1972-04-13 |
DE2144920B2 DE2144920B2 (de) | 1977-06-02 |
DE2144920C3 DE2144920C3 (de) | 1982-12-02 |
Family
ID=13670323
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712166885 Expired DE2166885C2 (de) | 1970-09-08 | 1971-09-08 | Verfahren zur Herstellung von p-Toluylsäure und Monomethyltherephthalat |
DE19712144920 Expired DE2144920C3 (de) | 1970-09-08 | 1971-09-08 | Verfahren zur Herstellung von p-Toluylsäure und Monomethylterephthalat |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712166885 Expired DE2166885C2 (de) | 1970-09-08 | 1971-09-08 | Verfahren zur Herstellung von p-Toluylsäure und Monomethyltherephthalat |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS4927574B1 (de) |
BE (1) | BE772355A (de) |
CA (1) | CA963913A (de) |
DE (2) | DE2166885C2 (de) |
FR (1) | FR2107340A5 (de) |
GB (1) | GB1313083A (de) |
IT (1) | IT938783B (de) |
NL (1) | NL153179C (de) |
RO (1) | RO62280A (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2419272A1 (fr) * | 1978-03-07 | 1979-10-05 | Teijin Ltd | Procede de preparation d'acides benzene-carboxyliques |
US4346230A (en) | 1971-12-18 | 1982-08-24 | Dynamit Nobel Aktiengesellschaft | Process for the preparation of dimethyl terephthalate |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4927574B1 (de) * | 1970-09-08 | 1974-07-18 | ||
JPS522895B2 (de) * | 1972-08-14 | 1977-01-25 | ||
NL8001550A (nl) * | 1980-03-15 | 1981-10-16 | Stamicarbon | Werkwijze ter bereiding van benzeenmonocarbonzuren. |
CN101146755B (zh) * | 2005-03-31 | 2012-07-11 | 科学与工业研究委员会 | 通过对-二甲苯在水中的液相氧化来制备对-甲苯甲酸的方法 |
JP2011505490A (ja) | 2007-12-03 | 2011-02-24 | ジーヴォ,インコーポレイテッド | 再生可能組成物 |
US8193402B2 (en) | 2007-12-03 | 2012-06-05 | Gevo, Inc. | Renewable compositions |
SG182407A1 (en) | 2010-01-08 | 2012-08-30 | Gevo Inc | Integrated methods of preparing renewable chemicals |
US8373012B2 (en) | 2010-05-07 | 2013-02-12 | Gevo, Inc. | Renewable jet fuel blendstock from isobutanol |
US8742187B2 (en) | 2011-04-19 | 2014-06-03 | Gevo, Inc. | Variations on prins-like chemistry to produce 2,5-dimethylhexadiene from isobutanol |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE949564C (de) * | 1951-04-13 | 1956-09-20 | Imhausen & Co G M B H | Verfahren zur Herstellung von Terephthalsaeuremonomethylester |
GB878268A (en) * | 1958-12-23 | 1961-09-27 | Basf Ag | Improvements in the production of dialkyl esters of iso- and/or terephthalic acid |
GB907926A (en) * | 1960-04-18 | 1962-10-10 | Distillers Co Yeast Ltd | Improvements in or relating to the production of trimellitic acid and trimellitic anhydride |
DE1194393B (de) | 1961-07-24 | 1965-06-10 | Socaty Soc Fr | Verfahren zur Herstellung von Benzoldicarbonsaeuren oder deren Gemischen |
BE761975A (fr) * | 1970-03-04 | 1971-07-26 | Dynamit Nobel Ag | Procede de preparation de l'ester dimethylique de l'acide terephtaliqu |
US3914287A (en) * | 1973-01-18 | 1975-10-21 | Teijin Hercules Chem Co Ltd | Method for the recovery of dimethyl terephthalate and intermediate products thereof |
DE2166885A1 (de) * | 1970-09-08 | 1976-11-18 | Teijin Hercules Chem Co Ltd | Verfahren zur herstellung von p-toluylsaeure und monomethyltherephthalat |
-
1970
- 1970-09-08 JP JP7874270A patent/JPS4927574B1/ja active Pending
-
1971
- 1971-09-06 GB GB4147671A patent/GB1313083A/en not_active Expired
- 1971-09-07 FR FR7132225A patent/FR2107340A5/fr not_active Expired
- 1971-09-07 CA CA122,256A patent/CA963913A/en not_active Expired
- 1971-09-08 DE DE19712166885 patent/DE2166885C2/de not_active Expired
- 1971-09-08 NL NL7112366A patent/NL153179C/xx not_active IP Right Cessation
- 1971-09-08 IT IT2837071A patent/IT938783B/it active
- 1971-09-08 BE BE772355A patent/BE772355A/xx unknown
- 1971-09-08 DE DE19712144920 patent/DE2144920C3/de not_active Expired
- 1971-09-08 RO RO6816371A patent/RO62280A/ro unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE949564C (de) * | 1951-04-13 | 1956-09-20 | Imhausen & Co G M B H | Verfahren zur Herstellung von Terephthalsaeuremonomethylester |
GB878268A (en) * | 1958-12-23 | 1961-09-27 | Basf Ag | Improvements in the production of dialkyl esters of iso- and/or terephthalic acid |
GB907926A (en) * | 1960-04-18 | 1962-10-10 | Distillers Co Yeast Ltd | Improvements in or relating to the production of trimellitic acid and trimellitic anhydride |
DE1194393B (de) | 1961-07-24 | 1965-06-10 | Socaty Soc Fr | Verfahren zur Herstellung von Benzoldicarbonsaeuren oder deren Gemischen |
BE761975A (fr) * | 1970-03-04 | 1971-07-26 | Dynamit Nobel Ag | Procede de preparation de l'ester dimethylique de l'acide terephtaliqu |
NL7100301A (de) * | 1970-03-04 | 1971-09-07 | ||
DE2166885A1 (de) * | 1970-09-08 | 1976-11-18 | Teijin Hercules Chem Co Ltd | Verfahren zur herstellung von p-toluylsaeure und monomethyltherephthalat |
US3914287A (en) * | 1973-01-18 | 1975-10-21 | Teijin Hercules Chem Co Ltd | Method for the recovery of dimethyl terephthalate and intermediate products thereof |
Non-Patent Citations (2)
Title |
---|
Ältere in Betracht gezogene Anmeldungen: DE-AS 20 10 137 * |
In Betracht gezogene ältere Patente: DE-PS 20 10 137 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4346230A (en) | 1971-12-18 | 1982-08-24 | Dynamit Nobel Aktiengesellschaft | Process for the preparation of dimethyl terephthalate |
FR2419272A1 (fr) * | 1978-03-07 | 1979-10-05 | Teijin Ltd | Procede de preparation d'acides benzene-carboxyliques |
Also Published As
Publication number | Publication date |
---|---|
DE2144920C3 (de) | 1982-12-02 |
GB1313083A (en) | 1973-04-11 |
BE772355A (fr) | 1972-01-17 |
RO62280A (fr) | 1978-04-15 |
DE2144920B2 (de) | 1977-06-02 |
CA963913A (en) | 1975-03-04 |
NL153179B (nl) | 1977-05-16 |
NL153179C (nl) | 1979-11-15 |
DE2166885A1 (de) | 1976-11-18 |
IT938783B (it) | 1973-02-10 |
JPS4927574B1 (de) | 1974-07-18 |
NL7112366A (de) | 1972-03-10 |
FR2107340A5 (de) | 1972-05-05 |
DE2166885C2 (de) | 1984-10-11 |
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