DE3103136A1 - Neue bicyclische ethercarbonate, verfahren zu ihrer herstellung und ihre verwendung - Google Patents
Neue bicyclische ethercarbonate, verfahren zu ihrer herstellung und ihre verwendungInfo
- Publication number
- DE3103136A1 DE3103136A1 DE19813103136 DE3103136A DE3103136A1 DE 3103136 A1 DE3103136 A1 DE 3103136A1 DE 19813103136 DE19813103136 DE 19813103136 DE 3103136 A DE3103136 A DE 3103136A DE 3103136 A1 DE3103136 A1 DE 3103136A1
- Authority
- DE
- Germany
- Prior art keywords
- formula
- range
- ethyl
- carbonic 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- Withdrawn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
- -1 bicyclic ether carbonates Chemical class 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 18
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 15
- 239000004417 polycarbonate Substances 0.000 claims abstract description 15
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 12
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims abstract description 10
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims abstract description 5
- 239000003054 catalyst Substances 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 16
- 238000005809 transesterification reaction Methods 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 150000007514 bases Chemical class 0.000 claims description 7
- 150000004651 carbonic acid esters Chemical class 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 6
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000002243 precursor Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 125000002619 bicyclic group Chemical group 0.000 claims description 2
- 150000007942 carboxylates Chemical class 0.000 claims description 2
- 238000007334 copolymerization reaction Methods 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 150000002894 organic compounds Chemical class 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 229910052716 thallium Inorganic materials 0.000 claims description 2
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- BHQBKNSATKPQEZ-UHFFFAOYSA-N carboxy hydrogen carbonate;2-ethyl-2-(hydroxymethyl)propane-1,3-diol Chemical compound OC(=O)OC(O)=O.CCC(CO)(CO)CO.CCC(CO)(CO)CO BHQBKNSATKPQEZ-UHFFFAOYSA-N 0.000 description 3
- AOGYCOYQMAVAFD-UHFFFAOYSA-N chlorocarbonic acid Chemical class OC(Cl)=O AOGYCOYQMAVAFD-UHFFFAOYSA-N 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- AYVFLTWVBDDRGB-UHFFFAOYSA-N (3-hydroxy-2,2-dimethylpropyl) hydrogen carbonate Chemical compound OCC(C)(C)COC(O)=O AYVFLTWVBDDRGB-UHFFFAOYSA-N 0.000 description 2
- WMYINDVYGQKYMI-UHFFFAOYSA-N 2-[2,2-bis(hydroxymethyl)butoxymethyl]-2-ethylpropane-1,3-diol Chemical compound CCC(CO)(CO)COCC(CC)(CO)CO WMYINDVYGQKYMI-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- ZFTFAPZRGNKQPU-UHFFFAOYSA-N dicarbonic acid Chemical class OC(=O)OC(O)=O ZFTFAPZRGNKQPU-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- PYBNTRWJKQJDRE-UHFFFAOYSA-L dodecanoate;tin(2+) Chemical compound [Sn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O PYBNTRWJKQJDRE-UHFFFAOYSA-L 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- YCWSUKQGVSGXJO-NTUHNPAUSA-N nifuroxazide Chemical group C1=CC(O)=CC=C1C(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 YCWSUKQGVSGXJO-NTUHNPAUSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- KKSAZXGYGLKVSV-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO KKSAZXGYGLKVSV-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- PNOXNTGLSKTMQO-UHFFFAOYSA-L diacetyloxytin Chemical compound CC(=O)O[Sn]OC(C)=O PNOXNTGLSKTMQO-UHFFFAOYSA-L 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- MJEMIOXXNCZZFK-UHFFFAOYSA-N ethylone Chemical compound CCNC(C)C(=O)C1=CC=C2OCOC2=C1 MJEMIOXXNCZZFK-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000005677 organic carbonates Chemical class 0.000 description 1
- AHWALFGBDFAJAI-UHFFFAOYSA-N phenyl carbonochloridate Chemical compound ClC(=O)OC1=CC=CC=C1 AHWALFGBDFAJAI-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- IUTCEZPPWBHGIX-UHFFFAOYSA-N tin(2+) Chemical compound [Sn+2] IUTCEZPPWBHGIX-UHFFFAOYSA-N 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
- C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
- C07D493/10—Spiro-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D319/04—1,3-Dioxanes; Hydrogenated 1,3-dioxanes
- C07D319/06—1,3-Dioxanes; Hydrogenated 1,3-dioxanes not condensed with other rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/02—Aliphatic polycarbonates
- C08G64/0208—Aliphatic polycarbonates saturated
- C08G64/0216—Aliphatic polycarbonates saturated containing a chain-terminating or -crosslinking agent
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyesters Or Polycarbonates (AREA)
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813103136 DE3103136A1 (de) | 1981-01-30 | 1981-01-30 | Neue bicyclische ethercarbonate, verfahren zu ihrer herstellung und ihre verwendung |
| AT82100285T ATE9583T1 (de) | 1981-01-30 | 1982-01-16 | Neue cyclische kohlensaeurederivate, ein verfahren zu ihrer herstellung und ihre verwendung als copolymerisationskomponenten bei der herstellung von polycarbonaten. |
| DE8282100285T DE3260794D1 (en) | 1981-01-30 | 1982-01-16 | Cyclic carbonic acid derivatives, process for their preparation and their use as copolymerisation constituents for the preparation of polycarbonates |
| EP82100285A EP0057360B1 (de) | 1981-01-30 | 1982-01-16 | Neue cyclische Kohlensäurederivate, ein Verfahren zu ihrer Herstellung und ihre Verwendung als Copolymerisationskomponenten bei der Herstellung von Polycarbonaten |
| US06/340,943 US4440937A (en) | 1981-01-30 | 1982-01-20 | Cyclic carbonic acid derivatives |
| JP57010267A JPS57144282A (en) | 1981-01-30 | 1982-01-27 | Novel cyclic carbonic acid derivative, manufacture and copolymer component for polycarbonate manufacture |
| ES509183A ES8308869A1 (es) | 1981-01-30 | 1982-01-29 | Procedimiento para la obtencion de derivados ciclicos de acido carbonico. |
| US06/555,754 US4501905A (en) | 1981-01-30 | 1983-11-28 | Cyclic carbonic acid derivatives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813103136 DE3103136A1 (de) | 1981-01-30 | 1981-01-30 | Neue bicyclische ethercarbonate, verfahren zu ihrer herstellung und ihre verwendung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3103136A1 true DE3103136A1 (de) | 1982-08-26 |
Family
ID=6123669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19813103136 Withdrawn DE3103136A1 (de) | 1981-01-30 | 1981-01-30 | Neue bicyclische ethercarbonate, verfahren zu ihrer herstellung und ihre verwendung |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS57144282A (enrdf_load_stackoverflow) |
| DE (1) | DE3103136A1 (enrdf_load_stackoverflow) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3523399A1 (de) * | 1985-06-29 | 1987-01-08 | Bayer Ag | Verfahren zur herstellung von duromeren aliphatischen polycarbonaten |
| DE3838752A1 (de) * | 1988-11-16 | 1990-05-17 | Bayer Ag | Verfahren zur herstellung von cyclischen kohlensaeureestern |
| US5556927A (en) | 1994-06-16 | 1996-09-17 | Daicel Chemical Industries, Ltd. | Carbonate group-modified epoxy resin, a process for the preparation thereof, and a heat-curable resin composition |
| JPH11269166A (ja) * | 1998-03-19 | 1999-10-05 | Daicel Chem Ind Ltd | 環状炭酸エステルの製造方法 |
| DE102005009166A1 (de) * | 2005-02-25 | 2006-08-31 | Basf Ag | Hochfunktionelle, hoch- oder hyperverzweigte Polycarbonate sowie deren Herstellung und Verwendung |
| US9546147B2 (en) | 2011-05-14 | 2017-01-17 | Rajni Hatti-Kaul | Method for producing cyclic carbonates |
| JP7594368B2 (ja) * | 2020-05-11 | 2024-12-04 | 旭化成株式会社 | スピロ構造を有する二官能性環状カーボナートの製造方法及びポリヒドロキシウレタンの製造方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3251857A (en) * | 1963-09-26 | 1966-05-17 | Union Carbide Corp | Heterocyclic spiro carbonates |
-
1981
- 1981-01-30 DE DE19813103136 patent/DE3103136A1/de not_active Withdrawn
-
1982
- 1982-01-27 JP JP57010267A patent/JPS57144282A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57144282A (en) | 1982-09-06 |
| JPH0256356B2 (enrdf_load_stackoverflow) | 1990-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0057360B1 (de) | Neue cyclische Kohlensäurederivate, ein Verfahren zu ihrer Herstellung und ihre Verwendung als Copolymerisationskomponenten bei der Herstellung von Polycarbonaten | |
| DE60205725T2 (de) | Glykolid herstellungsverfahren, und glykolsaüre zusammenstellung | |
| DE69612471T2 (de) | Durch eine Organozinnverbindung katalysierte Transesterification | |
| DE1034623B (de) | Verfahren zur Herstellung von Vinylaetherestern gesaettigter Monocarbonsaeuren | |
| DE19940622C1 (de) | Verfahren zur Herstellung von Di(meth)acrylsäureestern | |
| DE2744641B2 (de) | Verfahren zur Herstellung von Estern der Methacrylsäure | |
| DE10341952B4 (de) | Zwischenprodukt bestehend aus einer Mischung von organischen Carbonaten und Carbamaten und ein Verfahren zu seiner Herstellung | |
| DE2438432B2 (de) | Stabile loesungen von p-isopropenylphenol und verfahren zu deren herstellung | |
| DE3103136A1 (de) | Neue bicyclische ethercarbonate, verfahren zu ihrer herstellung und ihre verwendung | |
| DE1253274B (de) | Verfahren zur Herstellung von aliphatischen Azo-Verbindungen | |
| DE60214629T3 (de) | Verfahren zur Zersetzung von Michael-Addukten | |
| DE2842271C2 (de) | Esterdiolalkoxylate | |
| DE2804227A1 (de) | Verfahren zur herstellung von polyhalogendiphenylcarbonaten | |
| DE10341953B4 (de) | Verfahren zur Herstellung von organischen Carbonaten | |
| EP0000478B1 (de) | Verfahren zur Herstellung von Acyloinen | |
| EP0250773A1 (de) | Neue Chlorkohlensäureester | |
| DE824635C (de) | Verfahren zur Herstellung von N-Carboanhydriden | |
| DE1153351C2 (de) | Verfahren zur Darstellung von Nitroacetalen | |
| DE2133414A1 (de) | Verfahren zur Herstellung alkylidensubstituierter Norbornene | |
| DD249909A5 (de) | Verfahren zur herstellung von carbocyclischen acetidin-3-saeuren und deren salzen | |
| DE3103135A1 (de) | Neue cyclische carbonate des di- und triethylenglykols, verfahren zu deren herstellung und deren verwendung | |
| AT341225B (de) | Verfahren zur herstellung von polykarbonaten | |
| EP0031044A2 (de) | Verfahren zur Herstellung von Alkaliformylessigsäureester | |
| DE2708677B2 (de) | Verfahren zur Herstellung von Alkoxycarbonylperfluoralkylperfluorvinyläthern | |
| DE1934366C3 (de) | Verfahren zur Herstellung von Pivalolacton |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8130 | Withdrawal |