BE491627A - - Google Patents
Info
- Publication number
- BE491627A BE491627A BE491627DA BE491627A BE 491627 A BE491627 A BE 491627A BE 491627D A BE491627D A BE 491627DA BE 491627 A BE491627 A BE 491627A
- Authority
- BE
- Belgium
- Prior art keywords
- beta
- isopropyl
- naphthalene
- hydroperoxide
- naphthol
- Prior art date
Links
- PMPBFICDXLLSRM-UHFFFAOYSA-N 1-propan-2-ylnaphthalene Chemical compound C1=CC=C2C(C(C)C)=CC=CC2=C1 PMPBFICDXLLSRM-UHFFFAOYSA-N 0.000 claims description 49
- MHAJPDPJQMAIIY-UHFFFAOYSA-N hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 49
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 36
- 229950011260 betanaphthol Drugs 0.000 claims description 34
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-Naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 claims description 32
- 239000001301 oxygen Substances 0.000 claims description 29
- 229910052760 oxygen Inorganic materials 0.000 claims description 29
- 239000000243 solution Substances 0.000 claims description 29
- 238000000354 decomposition reaction Methods 0.000 claims description 28
- 238000007254 oxidation reaction Methods 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 25
- 239000002253 acid Substances 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 230000003647 oxidation Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000002378 acidificating Effects 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 13
- 229910052783 alkali metal Inorganic materials 0.000 claims description 12
- 239000012429 reaction media Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 239000006185 dispersion Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 11
- -1 alkali metal salt Chemical class 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- TVYVQNHYIHAJTD-UHFFFAOYSA-N 2-propan-2-ylnaphthalene Chemical compound C1=CC=CC2=CC(C(C)C)=CC=C21 TVYVQNHYIHAJTD-UHFFFAOYSA-N 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Natural products CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 9
- 239000011780 sodium chloride Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- VSCWAEJMTAWNJL-UHFFFAOYSA-K Aluminium chloride Chemical group Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- WTEOIRVLGSZEPR-UHFFFAOYSA-N Boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 claims description 6
- 238000004508 fractional distillation Methods 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- 238000005342 ion exchange Methods 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K Iron(III) chloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- JOXIMZWYDAKGHI-UHFFFAOYSA-N P-Toluenesulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 3
- PRZVLRIEWLOMRS-UHFFFAOYSA-M [O-]O.C1=CC=CC2=CC(C(C)C)=CC=C21 Chemical compound [O-]O.C1=CC=CC2=CC(C(C)C)=CC=C21 PRZVLRIEWLOMRS-UHFFFAOYSA-M 0.000 claims description 3
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 3
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical group [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 230000020477 pH reduction Effects 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000001376 precipitating Effects 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 claims 1
- 230000005591 charge neutralization Effects 0.000 claims 1
- 125000001309 chloro group Chemical group Cl* 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 230000001264 neutralization Effects 0.000 claims 1
- 238000006386 neutralization reaction Methods 0.000 claims 1
- 239000011541 reaction mixture Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- 238000010521 absorption reaction Methods 0.000 description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000005755 formation reaction Methods 0.000 description 10
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 8
- 229910001882 dioxygen Inorganic materials 0.000 description 7
- QBEZHXMLBPSPCU-UHFFFAOYSA-M [O-]O.C1=CC=C2C(C(C)C)=CC=CC2=C1 Chemical compound [O-]O.C1=CC=C2C(C(C)C)=CC=CC2=C1 QBEZHXMLBPSPCU-UHFFFAOYSA-M 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M NaHCO3 Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-M hydroperoxide group Chemical group [O-]O MHAJPDPJQMAIIY-UHFFFAOYSA-M 0.000 description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N Stearic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 230000001965 increased Effects 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000007086 side reaction Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-Naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000001187 sodium carbonate Substances 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000005712 crystallization Effects 0.000 description 2
- 238000010908 decantation Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N iso-propanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000012258 stirred mixture Substances 0.000 description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- FDHDUXOBMHHFFJ-UHFFFAOYSA-N 1-pentylnaphthalene Chemical group C1=CC=C2C(CCCCC)=CC=CC2=C1 FDHDUXOBMHHFFJ-UHFFFAOYSA-N 0.000 description 1
- NAMYKGVDVNBCFQ-UHFFFAOYSA-N 2-Bromopropane Chemical compound CC(C)Br NAMYKGVDVNBCFQ-UHFFFAOYSA-N 0.000 description 1
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- FOCAUTSVDIKZOP-UHFFFAOYSA-N Chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- PWATWSYOIIXYMA-UHFFFAOYSA-N Pentylbenzene Chemical compound CCCCCC1=CC=CC=C1 PWATWSYOIIXYMA-UHFFFAOYSA-N 0.000 description 1
- 229960004319 Trichloroacetic Acid Drugs 0.000 description 1
- YNJBWRMUSHSURL-UHFFFAOYSA-N Trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 1
- GBABOYUKABKIAF-GHYRFKGUSA-N Vinorelbine Chemical compound C1N(CC=2C3=CC=CC=C3NC=22)CC(CC)=C[C@H]1C[C@]2(C(=O)OC)C1=CC([C@]23[C@H]([C@]([C@H](OC(C)=O)[C@]4(CC)C=CCN([C@H]34)CC2)(O)C(=O)OC)N2C)=C2C=C1OC GBABOYUKABKIAF-GHYRFKGUSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 229910000318 alkali metal phosphate Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229940106681 chloroacetic acid Drugs 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- MOTZDAYCYVMXPC-UHFFFAOYSA-M dodecyl sulfate Chemical class CCCCCCCCCCCCOS([O-])(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-M 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001747 exhibiting Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical class O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- HFNQLYDPNAZRCH-UHFFFAOYSA-K hydrogen carbonate;carbonate Chemical compound OC([O-])=O.[O-]C([O-])=O HFNQLYDPNAZRCH-UHFFFAOYSA-K 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 230000003472 neutralizing Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N o-xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229940075930 picrate Drugs 0.000 description 1
- OXNIZHLAWKMVMX-UHFFFAOYSA-M picrate anion Chemical compound [O-]C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O OXNIZHLAWKMVMX-UHFFFAOYSA-M 0.000 description 1
- 239000001184 potassium carbonate Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000012260 resinous material Substances 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 230000001340 slower Effects 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000000725 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
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/08—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by decomposition of hydroperoxides, e.g. cumene hydroperoxide
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/72—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by liquid-liquid treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/86—Purification; separation; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C407/00—Preparation of peroxy compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
BE491627A true BE491627A (ru) |
Family
ID=136053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE491627D BE491627A (ru) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE491627A (ru) |
-
0
- BE BE491627D patent/BE491627A/fr unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2478627A1 (fr) | Procede de production et de recuperation d'acide terephtalique | |
JPH09176065A (ja) | ベンジルアルコールの連続製造方法 | |
EP0121466B1 (fr) | Procédé de décomposition d'un complexe d'acide orthobenzoyl-benzoique, de fluorure d'hydrogène et de trifluorure de bore | |
BE491627A (ru) | ||
JP7186313B2 (ja) | リンゴ酸の製造 | |
CH615899A5 (ru) | ||
FR2842194A1 (fr) | Procede de preparation d'un nitrophenol | |
EP4021856A1 (fr) | Élimination du formaldehyde dans les eaux usées par un traitement d'oxydation | |
BE496062A (ru) | ||
EP0296990B1 (fr) | Procédé de fabrication de polybutadiène hydroxylé | |
JPS6345666B2 (ru) | ||
JP3225605B2 (ja) | フェノール及びメチルエチルケトンの製造方法 | |
CH285772A (fr) | Procédé de préparation du bêta-naphtol. | |
BE498029A (ru) | ||
US4410743A (en) | Process for the preparation of 2,3-dimethylbutane-2,3-diol | |
JPS6270333A (ja) | 2,6−ジヒドロキシナフタレンの製造方法 | |
BE486910A (ru) | ||
BE535797A (ru) | ||
BE635117A (ru) | ||
BE633934A (ru) | ||
CH652996A5 (en) | Separation of selenium from a urethane solution for the preparation of a stack of photocells (photobattery) | |
CH96870A (fr) | Procédé de récupération, en partant d'un mélange de gaz se composant d'hydrocarbures et renfermant des corps non saturés, des oléfines contenant plus de deux atomes de carbone, sous forme de sulfates acides. | |
BE462229A (ru) | ||
BE583999A (ru) | ||
CH417562A (fr) | Procédé de préparation d'un acide dibasique |