JPH0222057B2 - - Google Patents
Info
- Publication number
- JPH0222057B2 JPH0222057B2 JP54127256A JP12725679A JPH0222057B2 JP H0222057 B2 JPH0222057 B2 JP H0222057B2 JP 54127256 A JP54127256 A JP 54127256A JP 12725679 A JP12725679 A JP 12725679A JP H0222057 B2 JPH0222057 B2 JP H0222057B2
- Authority
- JP
- Japan
- Prior art keywords
- amount
- water
- reaction
- catalyst
- oxidation
- 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 - Lifetime
Links
- LPNBBFKOUUSUDB-UHFFFAOYSA-N p-toluic acid Chemical compound CC1=CC=C(C(O)=O)C=C1 LPNBBFKOUUSUDB-UHFFFAOYSA-N 0.000 claims description 164
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 140
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 claims description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 92
- 239000003054 catalyst Substances 0.000 claims description 87
- 238000007254 oxidation reaction Methods 0.000 claims description 82
- 230000003647 oxidation Effects 0.000 claims description 73
- 239000000203 mixture Substances 0.000 claims description 68
- 238000006243 chemical reaction Methods 0.000 claims description 65
- 238000000034 method Methods 0.000 claims description 62
- 239000011541 reaction mixture Substances 0.000 claims description 60
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Natural products CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 40
- 150000001875 compounds Chemical class 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 230000001590 oxidative effect Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 150000002736 metal compounds Chemical class 0.000 claims description 7
- 150000001869 cobalt compounds Chemical class 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 6
- 150000002697 manganese compounds Chemical class 0.000 claims description 5
- 150000001735 carboxylic acids Chemical class 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000002243 precursor Substances 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 claims description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims description 2
- 229910001882 dioxygen Inorganic materials 0.000 claims description 2
- 150000002696 manganese Chemical class 0.000 claims 3
- 150000001868 cobalt Chemical class 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 39
- 229910052760 oxygen Inorganic materials 0.000 description 39
- 239000001301 oxygen Substances 0.000 description 39
- 239000011572 manganese Substances 0.000 description 38
- GOUHYARYYWKXHS-UHFFFAOYSA-N 4-formylbenzoic acid Chemical compound OC(=O)C1=CC=C(C=O)C=C1 GOUHYARYYWKXHS-UHFFFAOYSA-N 0.000 description 34
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 34
- 229910052748 manganese Inorganic materials 0.000 description 34
- 239000010941 cobalt Substances 0.000 description 28
- 229910017052 cobalt Inorganic materials 0.000 description 28
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 28
- 230000008569 process Effects 0.000 description 26
- 239000000047 product Substances 0.000 description 26
- 239000000543 intermediate Substances 0.000 description 23
- 239000002904 solvent Substances 0.000 description 23
- FXLOVSHXALFLKQ-UHFFFAOYSA-N p-tolualdehyde Chemical compound CC1=CC=C(C=O)C=C1 FXLOVSHXALFLKQ-UHFFFAOYSA-N 0.000 description 18
- 239000006227 byproduct Substances 0.000 description 17
- 238000002474 experimental method Methods 0.000 description 17
- 229940011182 cobalt acetate Drugs 0.000 description 15
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 14
- 239000002994 raw material Substances 0.000 description 14
- 229940071125 manganese acetate Drugs 0.000 description 13
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 13
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 12
- 238000010924 continuous production Methods 0.000 description 11
- ZWLPBLYKEWSWPD-UHFFFAOYSA-N o-toluic acid Chemical compound CC1=CC=CC=C1C(O)=O ZWLPBLYKEWSWPD-UHFFFAOYSA-N 0.000 description 11
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 239000002244 precipitate Substances 0.000 description 9
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 8
- 239000012190 activator Substances 0.000 description 8
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 8
- 229910052794 bromium Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000008096 xylene Substances 0.000 description 8
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 7
- 230000008901 benefit Effects 0.000 description 7
- 239000000376 reactant Substances 0.000 description 7
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 6
- 239000005711 Benzoic acid Substances 0.000 description 6
- 235000010233 benzoic acid Nutrition 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 235000019253 formic acid Nutrition 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 239000012736 aqueous medium Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 3
- -1 aromatic carboxylic acids Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000012456 homogeneous solution Substances 0.000 description 3
- 150000002576 ketones Chemical class 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 150000001491 aromatic compounds Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 229910001385 heavy metal Chemical class 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 238000005502 peroxidation Methods 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- UEGPKNKPLBYCNK-UHFFFAOYSA-L magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 description 1
- 229940069446 magnesium acetate Drugs 0.000 description 1
- 235000011285 magnesium acetate Nutrition 0.000 description 1
- 239000011654 magnesium acetate Substances 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
- 238000005259 measurement Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000005609 naphthenate group Chemical group 0.000 description 1
- 229940078494 nickel acetate Drugs 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000003969 polarography Methods 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 150000003738 xylenes Chemical class 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (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)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US94764178A | 1978-10-02 | 1978-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5549337A JPS5549337A (en) | 1980-04-09 |
| JPH0222057B2 true JPH0222057B2 (ro) | 1990-05-17 |
Family
ID=25486474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12725679A Granted JPS5549337A (en) | 1978-10-02 | 1979-10-02 | Manufacture of terephthalic acid |
Country Status (23)
| Country | Link |
|---|---|
| JP (1) | JPS5549337A (ro) |
| AR (1) | AR218771A1 (ro) |
| AT (1) | ATA638179A (ro) |
| AU (1) | AU5135679A (ro) |
| BE (1) | BE879091A (ro) |
| BR (1) | BR7906172A (ro) |
| CA (1) | CA1145357A (ro) |
| CH (1) | CH642343A5 (ro) |
| CS (1) | CS212247B2 (ro) |
| DE (1) | DE2939510C2 (ro) |
| ES (1) | ES484555A0 (ro) |
| FI (1) | FI793003A (ro) |
| FR (1) | FR2438027A1 (ro) |
| GB (1) | GB2032432B (ro) |
| IN (1) | IN152155B (ro) |
| IT (1) | IT1123749B (ro) |
| NL (1) | NL7907252A (ro) |
| NO (1) | NO150679C (ro) |
| PH (1) | PH15083A (ro) |
| PL (1) | PL118757B1 (ro) |
| PT (1) | PT70249A (ro) |
| SE (1) | SE7908072L (ro) |
| ZA (1) | ZA795037B (ro) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4334086A (en) * | 1981-03-16 | 1982-06-08 | Labofina S.A. | Production of terephthalic acid |
| GB9210832D0 (en) * | 1992-05-21 | 1992-07-08 | Ici Plc | Bromine catalysed oxidation process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5382744A (en) * | 1976-10-26 | 1978-07-21 | Labofina Sa | Process for preparing terephthalic acid |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE548214A (ro) * | ||||
| BE562102A (ro) * | 1956-11-05 | |||
| FR1367025A (fr) * | 1963-06-25 | 1964-07-17 | Du Pont | Procédé d'oxydation de p-xylène |
| US3406196A (en) * | 1964-09-30 | 1968-10-15 | Du Pont | Oxidation of polyalkyl aromatics to polycarboxylic acids |
| US3883584A (en) * | 1971-11-25 | 1975-05-13 | Teijin Ltd | Process for the preparation of terephthalic acid |
| GB1542320A (en) * | 1976-10-26 | 1979-03-14 | Labofina Sa | Process for the preparation of aromatic dicarboxylic acids |
| GB2019395B (en) * | 1978-04-24 | 1982-07-28 | Labofina Sa | Production of terephthalic acid from p-xylene |
-
1979
- 1979-07-23 IN IN757/CAL/79A patent/IN152155B/en unknown
- 1979-09-24 ZA ZA00795037A patent/ZA795037B/xx unknown
- 1979-09-26 FI FI793003A patent/FI793003A/fi not_active Application Discontinuation
- 1979-09-26 BR BR7906172A patent/BR7906172A/pt unknown
- 1979-09-26 IT IT26037/79A patent/IT1123749B/it active
- 1979-09-27 CH CH869779A patent/CH642343A5/de not_active IP Right Cessation
- 1979-09-27 AR AR278233A patent/AR218771A1/es active
- 1979-09-28 PL PL1979218597A patent/PL118757B1/pl unknown
- 1979-09-28 DE DE2939510A patent/DE2939510C2/de not_active Expired
- 1979-09-28 PT PT70249A patent/PT70249A/pt unknown
- 1979-09-28 SE SE7908072A patent/SE7908072L/xx not_active Application Discontinuation
- 1979-09-28 GB GB7933672A patent/GB2032432B/en not_active Expired
- 1979-09-28 NL NL7907252A patent/NL7907252A/nl active Search and Examination
- 1979-09-28 BE BE0/197396A patent/BE879091A/fr not_active IP Right Cessation
- 1979-09-28 AT AT0638179A patent/ATA638179A/de unknown
- 1979-09-28 NO NO793116A patent/NO150679C/no unknown
- 1979-09-28 ES ES79484555A patent/ES484555A0/es active Granted
- 1979-10-01 CA CA000336777A patent/CA1145357A/en not_active Expired
- 1979-10-02 FR FR7924461A patent/FR2438027A1/fr active Granted
- 1979-10-02 JP JP12725679A patent/JPS5549337A/ja active Granted
- 1979-10-02 PH PH23098A patent/PH15083A/en unknown
- 1979-10-02 CS CS796670A patent/CS212247B2/cs unknown
- 1979-10-02 AU AU51356/79A patent/AU5135679A/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5382744A (en) * | 1976-10-26 | 1978-07-21 | Labofina Sa | Process for preparing terephthalic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| SE7908072L (sv) | 1980-04-03 |
| ES484555A1 (es) | 1980-05-16 |
| AR218771A1 (es) | 1980-06-30 |
| IN152155B (ro) | 1983-11-05 |
| IT7926037A0 (it) | 1979-09-26 |
| NO150679B (no) | 1984-08-20 |
| DE2939510C2 (de) | 1985-08-01 |
| NO150679C (no) | 1984-11-28 |
| NO793116L (no) | 1980-04-08 |
| DE2939510A1 (de) | 1980-04-03 |
| BR7906172A (pt) | 1980-05-27 |
| FR2438027B1 (ro) | 1984-08-24 |
| CA1145357A (en) | 1983-04-26 |
| CH642343A5 (de) | 1984-04-13 |
| FI793003A (fi) | 1980-04-03 |
| IT1123749B (it) | 1986-04-30 |
| GB2032432B (en) | 1983-02-09 |
| ES484555A0 (es) | 1980-05-16 |
| PH15083A (en) | 1982-07-02 |
| ATA638179A (de) | 1982-01-15 |
| PL218597A1 (ro) | 1980-05-05 |
| JPS5549337A (en) | 1980-04-09 |
| PT70249A (en) | 1979-10-01 |
| PL118757B1 (en) | 1981-10-31 |
| ZA795037B (en) | 1980-09-24 |
| NL7907252A (nl) | 1980-04-08 |
| CS212247B2 (en) | 1982-03-26 |
| GB2032432A (en) | 1980-05-08 |
| AU5135679A (en) | 1980-04-17 |
| FR2438027A1 (fr) | 1980-04-30 |
| BE879091A (fr) | 1980-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4278810A (en) | Process for the preparation of terephthalic acid | |
| US6153790A (en) | Method to produce aromatic dicarboxylic acids using cobalt and zirconium catalysts | |
| NL193538C (nl) | Werkwijze voor het bereiden van tereftaalzuur. | |
| US3845117A (en) | Process for preparation of phthalic acids | |
| KR830001304B1 (ko) | 방향족 디카복실산의 제조방법 | |
| US3700731A (en) | Process for oxidizing xylenes to phthalic acids | |
| AU732522B2 (en) | Method to produce aromatic carboxylic acids | |
| US2723994A (en) | Oxidation of xylene and toluic acid mixtures to phthalic acids | |
| EP0562105A1 (en) | Process for preparing 2,6-naphthalenedicarboxylic acid---------- | |
| GB1589310A (en) | Continuous process for producing terephthalic acid | |
| CA1105943A (en) | Process for the preparation of terephthalic acid | |
| US4258209A (en) | Process for preparing terephthalic acid | |
| JPH0222057B2 (ro) | ||
| US4952721A (en) | Process for oxidizing esters of methyl-substituted phenol compounds to aromatic carboxylic acids | |
| US4259522A (en) | Process for the production of isophtahalic acid | |
| US4214100A (en) | Process for preventing blackening of phthalic acid | |
| CA2063979C (en) | Process for the preparation of alkanesulfonylbenzoic acids | |
| US3852343A (en) | A process for the production of benzene carboxylic acids from ethyl substituted benzens | |
| GB1577019A (en) | Process for producing high quality terephthalic acid | |
| JP4352191B2 (ja) | ピロメリット酸の製造法 | |
| JP3187212B2 (ja) | ナフタレンジカルボン酸の連続製造法 | |
| US4873361A (en) | Process for production of p-acetoxybenzoic acid from p-acetoxyacetophenone | |
| US4754062A (en) | Iron-enhanced selectivity of heavy metal-bromine catalysis in the oxidation of polyalkylaromatics | |
| US4097492A (en) | Process for the preparation of naphthalene-1,4,5,8-tetracarboxylic acid | |
| JPH0529021B2 (ro) |