PL127149B1 - Method of obtaining hydrogen peroxide - Google Patents
Method of obtaining hydrogen peroxide Download PDFInfo
- Publication number
- PL127149B1 PL127149B1 PL1981232262A PL23226281A PL127149B1 PL 127149 B1 PL127149 B1 PL 127149B1 PL 1981232262 A PL1981232262 A PL 1981232262A PL 23226281 A PL23226281 A PL 23226281A PL 127149 B1 PL127149 B1 PL 127149B1
- Authority
- PL
- Poland
- Prior art keywords
- groups
- carbon atoms
- urea
- solvent
- alkyl
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 42
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims description 33
- 239000002904 solvent Substances 0.000 claims description 45
- 229910052757 nitrogen Inorganic materials 0.000 claims description 33
- 150000003672 ureas Chemical class 0.000 claims description 27
- 125000000217 alkyl group Chemical group 0.000 claims description 23
- 239000004202 carbamide Substances 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 21
- 230000003647 oxidation Effects 0.000 claims description 20
- 238000007254 oxidation reaction Methods 0.000 claims description 20
- 125000004432 carbon atom Chemical group C* 0.000 claims description 18
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims description 17
- 150000004056 anthraquinones Chemical class 0.000 claims description 17
- 125000003118 aryl group Chemical group 0.000 claims description 17
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 7
- 239000011877 solvent mixture Substances 0.000 claims description 6
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 5
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- JIXBPULJZBURNU-UHFFFAOYSA-N 1-methyl-1-phenyl-3,3-di(propan-2-yl)urea Chemical compound CC(C)N(C(C)C)C(=O)N(C)C1=CC=CC=C1 JIXBPULJZBURNU-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 125000005842 heteroatom Chemical group 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 125000001424 substituent group Chemical group 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 235000013877 carbamide Nutrition 0.000 description 31
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 26
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 20
- 239000012224 working solution Substances 0.000 description 14
- -1 hexyl acetate methylcyclohexyl acetate diisobutylcarbinol esters Chemical class 0.000 description 13
- 239000000203 mixture Substances 0.000 description 10
- YTZKOQUCBOVLHL-UHFFFAOYSA-N tert-butylbenzene Chemical compound CC(C)(C)C1=CC=CC=C1 YTZKOQUCBOVLHL-UHFFFAOYSA-N 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- QPUYECUOLPXSFR-UHFFFAOYSA-N 1-methylnaphthalene Chemical compound C1=CC=C2C(C)=CC=CC2=C1 QPUYECUOLPXSFR-UHFFFAOYSA-N 0.000 description 4
- 150000004996 alkyl benzenes Chemical class 0.000 description 4
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 4
- 239000012429 reaction media Substances 0.000 description 4
- PCFMUWBCZZUMRX-UHFFFAOYSA-N 9,10-Dihydroxyanthracene Chemical compound C1=CC=C2C(O)=C(C=CC=C3)C3=C(O)C2=C1 PCFMUWBCZZUMRX-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000006864 oxidative decomposition reaction Methods 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 125000004151 quinonyl group Chemical group 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- IEEBJIUHVRNCHY-UHFFFAOYSA-N 1,1-dibutyl-3-methyl-3-phenylurea Chemical compound CCCCN(CCCC)C(=O)N(C)C1=CC=CC=C1 IEEBJIUHVRNCHY-UHFFFAOYSA-N 0.000 description 2
- JORLUGVBYJSSAW-UHFFFAOYSA-N 2-ethyl-1,2,3,4-tetrahydroanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1CC(CC)CC2 JORLUGVBYJSSAW-UHFFFAOYSA-N 0.000 description 2
- SJEBAWHUJDUKQK-UHFFFAOYSA-N 2-ethylanthraquinone Chemical compound C1=CC=C2C(=O)C3=CC(CC)=CC=C3C(=O)C2=C1 SJEBAWHUJDUKQK-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methylaniline Chemical compound CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 description 2
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 125000000687 hydroquinonyl group Chemical group C1(O)=C(C=C(O)C=C1)* 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- TTZPPHVMXXHUBH-UHFFFAOYSA-N 1,1,3-trimethyl-3-phenylurea Chemical compound CN(C)C(=O)N(C)C1=CC=CC=C1 TTZPPHVMXXHUBH-UHFFFAOYSA-N 0.000 description 1
- SMHSXUILUNIYJZ-UHFFFAOYSA-N 1,1-diethyl-3-methyl-3-phenylurea Chemical compound CCN(CC)C(=O)N(C)C1=CC=CC=C1 SMHSXUILUNIYJZ-UHFFFAOYSA-N 0.000 description 1
- LRPCKERCLLMBQT-UHFFFAOYSA-N 1-methyl-1-phenyl-3,3-dipropylurea Chemical compound CCCN(CCC)C(=O)N(C)C1=CC=CC=C1 LRPCKERCLLMBQT-UHFFFAOYSA-N 0.000 description 1
- SQBHGDSDVWCPHN-UHFFFAOYSA-N 1-methyl-3-phenylurea Chemical compound CNC(=O)NC1=CC=CC=C1 SQBHGDSDVWCPHN-UHFFFAOYSA-N 0.000 description 1
- INPHIYULSHLAHR-UHFFFAOYSA-N 1-pentylanthracene-9,10-dione Chemical class O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2CCCCC INPHIYULSHLAHR-UHFFFAOYSA-N 0.000 description 1
- AXHVNJGQOJFMHT-UHFFFAOYSA-N 1-tert-butyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C(C)(C)C AXHVNJGQOJFMHT-UHFFFAOYSA-N 0.000 description 1
- YEVQZPWSVWZAOB-UHFFFAOYSA-N 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene Chemical class FC(F)(F)C1=CC=C(I)C(CBr)=C1 YEVQZPWSVWZAOB-UHFFFAOYSA-N 0.000 description 1
- GPLIMIJPIZGPIF-UHFFFAOYSA-N 2-hydroxy-1,4-benzoquinone Chemical compound OC1=CC(=O)C=CC1=O GPLIMIJPIZGPIF-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Chemical class 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- PNNCWTXUWKENPE-UHFFFAOYSA-N [N].NC(N)=O Chemical group [N].NC(N)=O PNNCWTXUWKENPE-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 150000001555 benzenes Chemical class 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
- 239000000969 carrier Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229940043279 diisopropylamine Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000374 eutectic mixture Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- ZCXOSDRICFIHTA-UHFFFAOYSA-N n-methylaniline;hydrochloride Chemical compound [Cl-].C[NH2+]C1=CC=CC=C1 ZCXOSDRICFIHTA-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical class [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ILWRPSCZWQJDMK-UHFFFAOYSA-N triethylazanium;chloride Chemical compound Cl.CCN(CC)CC ILWRPSCZWQJDMK-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/01—Hydrogen peroxide
- C01B15/022—Preparation from organic compounds
- C01B15/023—Preparation from organic compounds by the alkyl-anthraquinone process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3027253A DE3027253C2 (de) | 1980-07-18 | 1980-07-18 | Verfahren zur Herstellung von Wasserstoffperoxid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL232262A1 PL232262A1 (enEXAMPLES) | 1982-03-15 |
| PL127149B1 true PL127149B1 (en) | 1983-09-30 |
Family
ID=6107520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL1981232262A PL127149B1 (en) | 1980-07-18 | 1981-07-17 | Method of obtaining hydrogen peroxide |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4349526A (enEXAMPLES) |
| EP (1) | EP0044480B1 (enEXAMPLES) |
| JP (1) | JPS5756305A (enEXAMPLES) |
| AR (1) | AR226471A1 (enEXAMPLES) |
| AT (1) | ATE7011T1 (enEXAMPLES) |
| BR (1) | BR8104597A (enEXAMPLES) |
| CA (1) | CA1158418A (enEXAMPLES) |
| DD (1) | DD202856A5 (enEXAMPLES) |
| DE (2) | DE3027253C2 (enEXAMPLES) |
| ES (1) | ES503800A0 (enEXAMPLES) |
| IN (1) | IN154788B (enEXAMPLES) |
| PL (1) | PL127149B1 (enEXAMPLES) |
| TR (1) | TR20967A (enEXAMPLES) |
| ZA (1) | ZA814807B (enEXAMPLES) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473579A (en) * | 1982-01-26 | 1984-09-25 | American Cyanamid Company | Antiatherosclerotic tetrasubstituted ureas and thioureas |
| US4394369A (en) * | 1982-05-24 | 1983-07-19 | Fmc Corporation | Hydrogen peroxide process |
| US4782071A (en) * | 1986-11-03 | 1988-11-01 | Warner-Lambert Company | Tetrasubstituted urea cholinergic agents |
| SE459919C (sv) * | 1987-03-27 | 1991-03-25 | Eka Nobel Ab | Foerfarande foer framstaellning av vaeteperoxid genom reduktion och oxidation av en antrakinon |
| FR2614015B1 (fr) * | 1987-04-16 | 1989-07-13 | Atochem | Procede de production cyclique de peroxyde d'hydrogene |
| US5374339A (en) * | 1993-10-14 | 1994-12-20 | Guillet; James E. | Production of hydrogen peroxide |
| US5624543A (en) * | 1995-08-01 | 1997-04-29 | Peroxco Incorporated | Aqueous phase production of hydrogen peroxide and catalysts for use therein |
| US6802972B1 (en) | 1999-01-29 | 2004-10-12 | Mykrolis Corporation | Microporous hollow fiber membranes from perfluorinated thermoplastic polymers |
| DE60140939D1 (de) * | 2000-06-19 | 2010-02-11 | Akzo Nobel Nv | Nd darin verwendete zusammensetzung |
| CN102173391B (zh) * | 2011-01-15 | 2013-06-12 | 王继华 | Pa触媒在三组份溶剂组成的工作液下生产H2O2的方法 |
| SE540100C2 (en) * | 2016-12-29 | 2018-03-27 | Eb Nuberg Ab | Aromatic solvent for hydrogen peroxide production |
| EP3543208A1 (en) * | 2018-03-19 | 2019-09-25 | Solvay Sa | Process for manufacturing an aqueous hydrogen peroxide solution |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA565053A (en) * | 1958-10-21 | Kabisch Gerhard | Process for preparation of hydrogen peroxide | |
| DE888840C (de) * | 1949-11-05 | 1953-09-03 | Du Pont | Verfahren zur Herstellung von Wasserstoffperoxyd |
| US2655534A (en) * | 1951-10-25 | 1953-10-13 | Du Pont | Preparation of n-aromatic-n'-aliphatic hydrocarbon ureas |
| DE953790C (de) | 1953-07-01 | 1956-12-06 | Laporte Chemical | Verfahren zur Herstellung von Wasserstoffperoxyd |
| NL92622C (enEXAMPLES) | 1953-08-11 | 1900-01-01 | ||
| DE963150C (de) | 1954-10-21 | 1957-05-02 | Laporte Chemical | Verfahren zur Herstellung von Wasserstoffperoxyd |
| GB864884A (en) | 1956-11-24 | 1961-04-12 | Fmc Corp | Process for the preparation of hydrogen peroxide |
| US2975033A (en) * | 1956-11-24 | 1961-03-14 | Fmc Corp | Process for preparation of hydrogen peroxide |
| DE1261838B (de) | 1963-09-03 | 1968-02-29 | Degussa | Verfahren zur Herstellung von Wasserstoffperoxyd |
| DE1914739U (de) | 1965-03-06 | 1965-04-29 | Ewald Ridder | Schneidvorrichtung fuer bratwurst od. dgl. |
| DE2065155C3 (de) * | 1970-04-18 | 1975-03-27 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | N.N-Diäthyl-N'.N'-di-n-butylharnstoff und seine Verwendung |
| NL170124C (nl) * | 1970-04-18 | 1982-10-01 | Degussa | Werkwijze ter bereiding van waterstofperoxyde volgens het antrachinonprocede; werkwijze voor het bereiden van een viervoudig gesubstitueerd ureum. |
| DE2104432C3 (de) * | 1971-01-30 | 1973-11-22 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Verfahren zur Herstellung von Wasser stoflfperoxid nach dem Anthrachinonver fahren |
| NL171693C (nl) * | 1971-05-21 | 1983-05-02 | Degussa | Werkwijze voor het overbrengen van waterstofperoxyde uit een waterige oplossing in een dampvormig of vloeibaar mengsel met organische verbindingen. |
| US4046868A (en) * | 1973-09-26 | 1977-09-06 | E. I. Du Pont De Nemours And Company | Production of hydrogen peroxide |
| DE2532819C3 (de) * | 1975-07-23 | 1978-10-05 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Verfahren zur Herstellung von Wasserstoffperoxid |
-
1980
- 1980-07-18 DE DE3027253A patent/DE3027253C2/de not_active Expired
-
1981
- 1981-06-25 IN IN684/CAL/81A patent/IN154788B/en unknown
- 1981-07-02 TR TR20967A patent/TR20967A/xx unknown
- 1981-07-09 ES ES503800A patent/ES503800A0/es active Granted
- 1981-07-10 AT AT81105386T patent/ATE7011T1/de not_active IP Right Cessation
- 1981-07-10 EP EP81105386A patent/EP0044480B1/de not_active Expired
- 1981-07-10 DE DE8181105386T patent/DE3163071D1/de not_active Expired
- 1981-07-14 ZA ZA814807A patent/ZA814807B/xx unknown
- 1981-07-14 US US06/283,194 patent/US4349526A/en not_active Expired - Fee Related
- 1981-07-15 DD DD81231803A patent/DD202856A5/de unknown
- 1981-07-15 AR AR286105A patent/AR226471A1/es active
- 1981-07-16 CA CA000381918A patent/CA1158418A/en not_active Expired
- 1981-07-17 BR BR8104597A patent/BR8104597A/pt unknown
- 1981-07-17 PL PL1981232262A patent/PL127149B1/pl unknown
- 1981-07-17 JP JP56110955A patent/JPS5756305A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| PL232262A1 (enEXAMPLES) | 1982-03-15 |
| DD202856A5 (de) | 1983-10-05 |
| BR8104597A (pt) | 1982-04-06 |
| JPS5756305A (en) | 1982-04-03 |
| US4349526A (en) | 1982-09-14 |
| DE3163071D1 (en) | 1984-05-17 |
| ZA814807B (en) | 1982-07-28 |
| DE3027253A1 (de) | 1982-02-11 |
| ES8301451A1 (es) | 1982-12-01 |
| TR20967A (tr) | 1983-03-07 |
| EP0044480B1 (de) | 1984-04-11 |
| DE3027253C2 (de) | 1982-11-04 |
| AR226471A1 (es) | 1982-07-15 |
| EP0044480A1 (de) | 1982-01-27 |
| ATE7011T1 (de) | 1984-04-15 |
| ES503800A0 (es) | 1982-12-01 |
| IN154788B (enEXAMPLES) | 1984-12-15 |
| CA1158418A (en) | 1983-12-13 |
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