DE3114832A1 - Verfahren zur herstellung von p-sulfanilsaeure - Google Patents
Verfahren zur herstellung von p-sulfanilsaeureInfo
- Publication number
- DE3114832A1 DE3114832A1 DE19813114832 DE3114832A DE3114832A1 DE 3114832 A1 DE3114832 A1 DE 3114832A1 DE 19813114832 DE19813114832 DE 19813114832 DE 3114832 A DE3114832 A DE 3114832A DE 3114832 A1 DE3114832 A1 DE 3114832A1
- Authority
- DE
- Germany
- Prior art keywords
- reaction
- water
- aniline
- sulfanilic acid
- process according
- 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- Withdrawn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
- HVBSAKJJOYLTQU-UHFFFAOYSA-N 4-aminobenzenesulfonic acid Chemical compound NC1=CC=C(S(O)(=O)=O)C=C1 HVBSAKJJOYLTQU-UHFFFAOYSA-N 0.000 title claims description 49
- 238000004519 manufacturing process Methods 0.000 title description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 102
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 85
- 238000006243 chemical reaction Methods 0.000 claims description 63
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 32
- 239000011541 reaction mixture Substances 0.000 claims description 30
- 238000001914 filtration Methods 0.000 claims description 6
- RELMFMZEBKVZJC-UHFFFAOYSA-N 1,2,3-trichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1Cl RELMFMZEBKVZJC-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229940117389 dichlorobenzene Drugs 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 239000012442 inert solvent Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 150000003839 salts Chemical group 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 2
- ZNHBPIGKELNUBO-UHFFFAOYSA-N hydrogen sulfate phenylazanium Chemical compound OS([O-])(=O)=O.OS([O-])(=O)=O.[NH3+]c1ccccc1.[NH3+]c1ccccc1 ZNHBPIGKELNUBO-UHFFFAOYSA-N 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- 238000001556 precipitation Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 description 59
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 33
- 150000004682 monohydrates Chemical class 0.000 description 18
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 17
- IMUUNYPYNWXUBO-UHFFFAOYSA-N 4-aminobenzene-1,3-disulfonic acid Chemical compound NC1=CC=C(S(O)(=O)=O)C=C1S(O)(=O)=O IMUUNYPYNWXUBO-UHFFFAOYSA-N 0.000 description 16
- 239000000203 mixture Substances 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 238000009835 boiling Methods 0.000 description 12
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 239000000725 suspension Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000008346 aqueous phase Substances 0.000 description 6
- 239000012266 salt solution Substances 0.000 description 5
- 159000000000 sodium salts Chemical class 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000010533 azeotropic distillation Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 2
- WYUIWKFIFOJVKW-UHFFFAOYSA-N 1,2-dichloro-4-methylbenzene Chemical compound CC1=CC=C(Cl)C(Cl)=C1 WYUIWKFIFOJVKW-UHFFFAOYSA-N 0.000 description 2
- QPUYECUOLPXSFR-UHFFFAOYSA-N 1-methylnaphthalene Chemical compound C1=CC=C2C(C)=CC=CC2=C1 QPUYECUOLPXSFR-UHFFFAOYSA-N 0.000 description 2
- NPDACUSDTOMAMK-UHFFFAOYSA-N 4-Chlorotoluene Chemical compound CC1=CC=C(Cl)C=C1 NPDACUSDTOMAMK-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CAHQGWAXKLQREW-UHFFFAOYSA-N Benzal chloride Chemical compound ClC(Cl)C1=CC=CC=C1 CAHQGWAXKLQREW-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 239000006286 aqueous extract Substances 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 2
- 239000004305 biphenyl Substances 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- QARVLSVVCXYDNA-UHFFFAOYSA-N bromobenzene Chemical compound BrC1=CC=CC=C1 QARVLSVVCXYDNA-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- NTOLGSSKLPLTDW-UHFFFAOYSA-N hydrogen sulfate;phenylazanium Chemical compound OS(O)(=O)=O.NC1=CC=CC=C1 NTOLGSSKLPLTDW-UHFFFAOYSA-N 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- -1 petroleum Chemical class 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011877 solvent mixture Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical compound CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000010626 work up procedure Methods 0.000 description 2
- WQONPSCCEXUXTQ-UHFFFAOYSA-N 1,2-dibromobenzene Chemical compound BrC1=CC=CC=C1Br WQONPSCCEXUXTQ-UHFFFAOYSA-N 0.000 description 1
- GWLKCPXYBLCEKC-UHFFFAOYSA-N 1,2-dichloro-3-methylbenzene Chemical compound CC1=CC=CC(Cl)=C1Cl GWLKCPXYBLCEKC-UHFFFAOYSA-N 0.000 description 1
- XKEFYDZQGKAQCN-UHFFFAOYSA-N 1,3,5-trichlorobenzene Chemical compound ClC1=CC(Cl)=CC(Cl)=C1 XKEFYDZQGKAQCN-UHFFFAOYSA-N 0.000 description 1
- JSRLURSZEMLAFO-UHFFFAOYSA-N 1,3-dibromobenzene Chemical compound BrC1=CC=CC(Br)=C1 JSRLURSZEMLAFO-UHFFFAOYSA-N 0.000 description 1
- DMEDNTFWIHCBRK-UHFFFAOYSA-N 1,3-dichloro-2-methylbenzene Chemical compound CC1=C(Cl)C=CC=C1Cl DMEDNTFWIHCBRK-UHFFFAOYSA-N 0.000 description 1
- RYMMNSVHOKXTNN-UHFFFAOYSA-N 1,3-dichloro-5-methyl-benzene Natural products CC1=CC(Cl)=CC(Cl)=C1 RYMMNSVHOKXTNN-UHFFFAOYSA-N 0.000 description 1
- ZPQOPVIELGIULI-UHFFFAOYSA-N 1,3-dichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1 ZPQOPVIELGIULI-UHFFFAOYSA-N 0.000 description 1
- SWJPEBQEEAHIGZ-UHFFFAOYSA-N 1,4-dibromobenzene Chemical compound BrC1=CC=C(Br)C=C1 SWJPEBQEEAHIGZ-UHFFFAOYSA-N 0.000 description 1
- KFAKZJUYBOYVKA-UHFFFAOYSA-N 1,4-dichloro-2-methylbenzene Chemical compound CC1=CC(Cl)=CC=C1Cl KFAKZJUYBOYVKA-UHFFFAOYSA-N 0.000 description 1
- ZBTMRBYMKUEVEU-UHFFFAOYSA-N 1-bromo-4-methylbenzene Chemical compound CC1=CC=C(Br)C=C1 ZBTMRBYMKUEVEU-UHFFFAOYSA-N 0.000 description 1
- IBSQPLPBRSHTTG-UHFFFAOYSA-N 1-chloro-2-methylbenzene Chemical compound CC1=CC=CC=C1Cl IBSQPLPBRSHTTG-UHFFFAOYSA-N 0.000 description 1
- OSOUNOBYRMOXQQ-UHFFFAOYSA-N 1-chloro-3-methylbenzene Chemical compound CC1=CC=CC(Cl)=C1 OSOUNOBYRMOXQQ-UHFFFAOYSA-N 0.000 description 1
- MBDUIEKYVPVZJH-UHFFFAOYSA-N 1-ethylsulfonylethane Chemical compound CCS(=O)(=O)CC MBDUIEKYVPVZJH-UHFFFAOYSA-N 0.000 description 1
- KZNJSFHJUQDYHE-UHFFFAOYSA-N 1-methylanthracene Chemical compound C1=CC=C2C=C3C(C)=CC=CC3=CC2=C1 KZNJSFHJUQDYHE-UHFFFAOYSA-N 0.000 description 1
- FUNUTBJJKQIVSY-UHFFFAOYSA-N 2,4-Dichlorotoluene Chemical compound CC1=CC=C(Cl)C=C1Cl FUNUTBJJKQIVSY-UHFFFAOYSA-N 0.000 description 1
- GTJOHISYCKPIMT-UHFFFAOYSA-N 2-methylundecane Chemical compound CCCCCCCCCC(C)C GTJOHISYCKPIMT-UHFFFAOYSA-N 0.000 description 1
- PKIRNMPSENTWJX-UHFFFAOYSA-N 4-aminobenzenesulfonic acid Chemical compound NC1=CC=C(S(O)(=O)=O)C=C1.NC1=CC=C(S(O)(=O)=O)C=C1 PKIRNMPSENTWJX-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- SGVYKUFIHHTIFL-UHFFFAOYSA-N Isobutylhexyl Natural products CCCCCCCC(C)C SGVYKUFIHHTIFL-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 150000004816 dichlorobenzenes Chemical class 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- VKPSKYDESGTTFR-UHFFFAOYSA-N isododecane Natural products CC(C)(C)CC(C)CC(C)(C)C VKPSKYDESGTTFR-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- FUKMEFZGEMVGLD-UHFFFAOYSA-N phenylazanium;sulfate Chemical compound OS(O)(=O)=O.NC1=CC=CC=C1.NC1=CC=CC=C1 FUKMEFZGEMVGLD-UHFFFAOYSA-N 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- KSVSZLXDULFGDQ-UHFFFAOYSA-M sodium;4-aminobenzenesulfonate Chemical compound [Na+].NC1=CC=C(S([O-])(=O)=O)C=C1 KSVSZLXDULFGDQ-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 150000003613 toluenes Chemical class 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
- 239000007966 viscous suspension Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C309/45—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
- C07C309/46—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813114832 DE3114832A1 (de) | 1981-04-11 | 1981-04-11 | Verfahren zur herstellung von p-sulfanilsaeure |
| DE8282102728T DE3261743D1 (en) | 1981-04-11 | 1982-03-31 | Process for preparing p-sulfanilic acid |
| EP82102728A EP0063270B1 (de) | 1981-04-11 | 1982-03-31 | Verfahren zur Herstellung von p-Sulfanilsäure |
| JP57058422A JPS57179151A (en) | 1981-04-11 | 1982-04-09 | Manufacture of p-sulfanyl acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813114832 DE3114832A1 (de) | 1981-04-11 | 1981-04-11 | Verfahren zur herstellung von p-sulfanilsaeure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3114832A1 true DE3114832A1 (de) | 1982-10-28 |
Family
ID=6130021
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19813114832 Withdrawn DE3114832A1 (de) | 1981-04-11 | 1981-04-11 | Verfahren zur herstellung von p-sulfanilsaeure |
| DE8282102728T Expired DE3261743D1 (en) | 1981-04-11 | 1982-03-31 | Process for preparing p-sulfanilic acid |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8282102728T Expired DE3261743D1 (en) | 1981-04-11 | 1982-03-31 | Process for preparing p-sulfanilic acid |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0063270B1 (enExample) |
| JP (1) | JPS57179151A (enExample) |
| DE (2) | DE3114832A1 (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4209008A1 (de) * | 1992-03-20 | 1993-09-23 | Bitterfeld Wolfen Chemie | Verfahren zur kontinuierlichen herstellung eines aus anilinhydrogensulfat und sulfanilsaeure bestehenden gemisches |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2439297B2 (de) * | 1974-08-16 | 1976-11-18 | Hoechst Ag, 6000 Frankfurt | Verfahren zur herstellung von sulfanilsaeure |
| DE2855427A1 (de) * | 1977-12-23 | 1979-06-28 | Ciba Geigy Ag | Kontinuierliches reduktionsverfahren |
-
1981
- 1981-04-11 DE DE19813114832 patent/DE3114832A1/de not_active Withdrawn
-
1982
- 1982-03-31 EP EP82102728A patent/EP0063270B1/de not_active Expired
- 1982-03-31 DE DE8282102728T patent/DE3261743D1/de not_active Expired
- 1982-04-09 JP JP57058422A patent/JPS57179151A/ja active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2439297B2 (de) * | 1974-08-16 | 1976-11-18 | Hoechst Ag, 6000 Frankfurt | Verfahren zur herstellung von sulfanilsaeure |
| DE2855427A1 (de) * | 1977-12-23 | 1979-06-28 | Ciba Geigy Ag | Kontinuierliches reduktionsverfahren |
Non-Patent Citations (1)
| Title |
|---|
| US-Z: Chemical Abstracts, 1978, Ref. Nr. 146 545 r * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4209008A1 (de) * | 1992-03-20 | 1993-09-23 | Bitterfeld Wolfen Chemie | Verfahren zur kontinuierlichen herstellung eines aus anilinhydrogensulfat und sulfanilsaeure bestehenden gemisches |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3261743D1 (en) | 1985-02-14 |
| EP0063270A1 (de) | 1982-10-27 |
| JPS57179151A (en) | 1982-11-04 |
| EP0063270B1 (de) | 1985-01-02 |
| JPH0144180B2 (enExample) | 1989-09-26 |
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