DE2537890C2 - Verfahren zur Herstellung von Diacetoxybutan - Google Patents
Verfahren zur Herstellung von DiacetoxybutanInfo
- Publication number
- DE2537890C2 DE2537890C2 DE2537890A DE2537890A DE2537890C2 DE 2537890 C2 DE2537890 C2 DE 2537890C2 DE 2537890 A DE2537890 A DE 2537890A DE 2537890 A DE2537890 A DE 2537890A DE 2537890 C2 DE2537890 C2 DE 2537890C2
- Authority
- DE
- Germany
- Prior art keywords
- zone
- temperature
- diacetoxybutene
- reactor
- reaction
- 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
Links
- 238000000034 method Methods 0.000 title claims description 13
- 238000002360 preparation method Methods 0.000 title claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 49
- MWWXARALRVYLAE-UHFFFAOYSA-N 2-acetyloxybut-3-enyl acetate Chemical compound CC(=O)OCC(C=C)OC(C)=O MWWXARALRVYLAE-UHFFFAOYSA-N 0.000 claims description 34
- 239000003054 catalyst Substances 0.000 claims description 34
- 238000005984 hydrogenation reaction Methods 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 26
- 229910052739 hydrogen Inorganic materials 0.000 claims description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 18
- 239000007795 chemical reaction product Substances 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 51
- 239000007789 gas Substances 0.000 description 26
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 23
- 239000000047 product Substances 0.000 description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- 238000000926 separation method Methods 0.000 description 11
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 10
- 238000009835 boiling Methods 0.000 description 10
- 230000007062 hydrolysis Effects 0.000 description 10
- 238000006460 hydrolysis reaction Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 229910052763 palladium Inorganic materials 0.000 description 9
- 239000007858 starting material Substances 0.000 description 9
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- XUKSWKGOQKREON-UHFFFAOYSA-N 1,4-diacetoxybutane Chemical compound CC(=O)OCCCCOC(C)=O XUKSWKGOQKREON-UHFFFAOYSA-N 0.000 description 5
- 238000006137 acetoxylation reaction Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 5
- 239000004927 clay Substances 0.000 description 5
- 238000004821 distillation Methods 0.000 description 5
- 239000012263 liquid product Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000007086 side reaction Methods 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000003729 cation exchange resin Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 3
- VIRPYONDKXQHHU-UHFFFAOYSA-N 4-acetyloxybut-3-enyl acetate Chemical compound CC(=O)OCCC=COC(C)=O VIRPYONDKXQHHU-UHFFFAOYSA-N 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- -1 methane Natural products 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 238000007327 hydrogenolysis reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 239000008262 pumice Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- KUDQSWWPCLAILS-UHFFFAOYSA-N 2-acetyloxybut-1-enyl acetate Chemical compound CC(=O)OC(CC)=COC(C)=O KUDQSWWPCLAILS-UHFFFAOYSA-N 0.000 description 1
- UZFMOKQJFYMBGY-UHFFFAOYSA-N 4-hydroxy-TEMPO Chemical compound CC1(C)CC(O)CC(C)(C)N1[O] UZFMOKQJFYMBGY-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000007868 Raney catalyst Substances 0.000 description 1
- 229910000564 Raney nickel Inorganic materials 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- BMRWNKZVCUKKSR-UHFFFAOYSA-N butane-1,2-diol Chemical compound CCC(O)CO BMRWNKZVCUKKSR-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229940023913 cation exchange resins Drugs 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- KPTMSNPLDZKSST-UHFFFAOYSA-N glyceryl diacetate or diacetin Chemical compound CC(=O)OC(CC)COC(C)=O KPTMSNPLDZKSST-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000003541 multi-stage reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011973 solid acid Substances 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 238000000629 steam reforming Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
- C07C31/20—Dihydroxylic alcohols
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
- C07C69/12—Acetic acid esters
- C07C69/16—Acetic acid esters of dihydroxylic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49100778A JPS5919931B2 (ja) | 1974-09-02 | 1974-09-02 | ジアセトキシブテンの水素化方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2537890A1 DE2537890A1 (de) | 1976-03-11 |
| DE2537890C2 true DE2537890C2 (de) | 1985-12-19 |
Family
ID=14282918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2537890A Expired DE2537890C2 (de) | 1974-09-02 | 1975-08-26 | Verfahren zur Herstellung von Diacetoxybutan |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4010197A (enExample) |
| JP (1) | JPS5919931B2 (enExample) |
| CA (1) | CA1047049A (enExample) |
| DE (1) | DE2537890C2 (enExample) |
| FR (1) | FR2288730A1 (enExample) |
| GB (1) | GB1519828A (enExample) |
| IT (1) | IT1041627B (enExample) |
| NL (1) | NL183182C (enExample) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129515A (enExample) * | 1974-03-28 | 1975-10-13 | ||
| DE2723961C2 (de) * | 1976-06-02 | 1986-08-21 | Mitsubishi Chemical Industries Ltd., Tokio/Tokyo | Verfahren zur Herstellung von 1,4-Glykoldiacetaten |
| US4413140A (en) * | 1977-04-26 | 1983-11-01 | Phillips Petroleum Company | Liquid extraction of diacetoxybutane with halogenated paraffins |
| JPS5432409A (en) * | 1977-08-03 | 1979-03-09 | Mitsubishi Chem Ind Ltd | Preparation of ciol and cyclic ether |
| DE2847068A1 (de) * | 1978-10-28 | 1980-05-08 | Basf Ag | Verfahren zur herstellung von butendioldiacetaten und von butandiol |
| GB8310797D0 (en) * | 1983-04-21 | 1983-05-25 | British Petroleum Co Plc | Vapour phase hydrogenation of esters |
| JPS6135636U (ja) * | 1984-08-08 | 1986-03-05 | 日本軽金属株式会社 | 発熱保温容器 |
| US5204460A (en) * | 1988-11-29 | 1993-04-20 | Takasago International Corporation | Ruthenium catalyzed process for preparing 4-acetoxyazetidinones |
| JP2666151B2 (ja) * | 1988-12-14 | 1997-10-22 | 東燃株式会社 | １，４−ブタンジオールの製造法 |
| DE4009029A1 (de) * | 1990-03-21 | 1991-09-26 | Basf Ag | Verfahren zur herstellung von 1,4-butandiol |
| US5196602A (en) * | 1991-12-30 | 1993-03-23 | The Standard Oil Company | Two-stage maleic anhydride hydrogenation process for 1,4-butanediol synthesis |
| JP3175360B2 (ja) * | 1992-12-10 | 2001-06-11 | 三菱化学株式会社 | １，４−ブタンジオールの精製方法 |
| US6555720B1 (en) | 2000-04-28 | 2003-04-29 | Mitsubishi Chemical Corporation | Method and system for producing 1,4-butanediol |
| DE102008053315A1 (de) | 2008-10-27 | 2010-04-29 | Kiefer, Hans, Dr. | Verbessertes Verfahren zur Herstellung von Tetrahydrofuran (THF) |
| GB201318175D0 (en) | 2013-10-14 | 2013-11-27 | Johnson Matthey Davy Technologies Ltd | Process |
| CN115636725B (zh) * | 2021-07-20 | 2023-12-19 | 万华化学集团股份有限公司 | 一种丁二醇的制备方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1170222A (en) * | 1968-06-10 | 1969-11-12 | Shell Int Research | Process for the preparation of Tetrahydrofuran and/or Homologues thereof |
| DE1793452B2 (de) * | 1968-09-19 | 1976-11-18 | Basf Ag, 6700 Ludwigshafen | Verfahren zur verbesserung der waermeabfuehrung bei katalytischen hydrierungen |
| DE2105220A1 (de) * | 1970-02-06 | 1971-11-25 | Toyo Soda Manufacturing Co., Ltd., Tsuno, Yamaguchi (Japan) | Verfahren zur Herstellung von 1,4-Diacetoxybutan |
| DE2217452C3 (de) * | 1971-04-17 | 1978-03-16 | Mitsubishi Chemical Industries, Ltd., Tokio | Verfahren zur Herstellung von 1,4-Diacyloxybuten-(2) |
| US3872163A (en) * | 1972-01-19 | 1975-03-18 | Kuraray Co | Method of preparing 1,4-diacyloxy-2-butenes |
| JPS5249447B2 (enExample) * | 1972-09-11 | 1977-12-17 | ||
| US3917720A (en) * | 1973-05-30 | 1975-11-04 | Gen Electric | Continuous process for the production of a diol from a diol ester |
| JPS50129515A (enExample) * | 1974-03-28 | 1975-10-13 |
-
1974
- 1974-09-02 JP JP49100778A patent/JPS5919931B2/ja not_active Expired
-
1975
- 1975-08-25 US US05/607,482 patent/US4010197A/en not_active Expired - Lifetime
- 1975-08-26 DE DE2537890A patent/DE2537890C2/de not_active Expired
- 1975-08-29 IT IT69161/75A patent/IT1041627B/it active
- 1975-08-29 GB GB35629/75A patent/GB1519828A/en not_active Expired
- 1975-08-29 CA CA234,638A patent/CA1047049A/en not_active Expired
- 1975-08-29 NL NLAANVRAGE7510214,A patent/NL183182C/xx not_active IP Right Cessation
- 1975-09-01 FR FR7526782A patent/FR2288730A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| NL7510214A (nl) | 1976-03-04 |
| NL183182B (nl) | 1988-03-16 |
| IT1041627B (it) | 1980-01-10 |
| CA1047049A (en) | 1979-01-23 |
| FR2288730A1 (fr) | 1976-05-21 |
| JPS5919931B2 (ja) | 1984-05-09 |
| US4010197A (en) | 1977-03-01 |
| FR2288730B1 (enExample) | 1978-03-17 |
| GB1519828A (en) | 1978-08-02 |
| NL183182C (nl) | 1988-08-16 |
| DE2537890A1 (de) | 1976-03-11 |
| JPS5129426A (en) | 1976-03-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: MITSUBISHI KASEI CORP., TOKIO/TOKYO, JP |
|
| 8328 | Change in the person/name/address of the agent |
Free format text: DANNENBERG, G., DIPL.-ING., 6000 FRANKFURT WEINHOLD, P., DIPL.-CHEM. DR., 8000 MUENCHEN GUDEL, D., DR.PHIL., PAT.-ANWAELTE, 6000 FRANKFURT |