DE2447348C2 - Verfahren zur Herstellung von Diarylcarbonaten - Google Patents
Verfahren zur Herstellung von DiarylcarbonatenInfo
- Publication number
- DE2447348C2 DE2447348C2 DE2447348A DE2447348A DE2447348C2 DE 2447348 C2 DE2447348 C2 DE 2447348C2 DE 2447348 A DE2447348 A DE 2447348A DE 2447348 A DE2447348 A DE 2447348A DE 2447348 C2 DE2447348 C2 DE 2447348C2
- Authority
- DE
- Germany
- Prior art keywords
- phosgene
- reaction
- aromatic
- phenol
- catalyst
- 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
- -1 diaryl carbonates Chemical class 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 14
- 238000002360 preparation method Methods 0.000 title claims description 4
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 15
- 125000003118 aryl group Chemical group 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 9
- 230000003197 catalytic effect Effects 0.000 claims description 7
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 4
- 125000000524 functional group Chemical group 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 description 23
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 21
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 20
- 239000002585 base Substances 0.000 description 12
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 11
- 239000011541 reaction mixture Substances 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 8
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 5
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 150000003840 hydrochlorides Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- AHWALFGBDFAJAI-UHFFFAOYSA-N phenyl carbonochloridate Chemical class ClC(=O)OC1=CC=CC=C1 AHWALFGBDFAJAI-UHFFFAOYSA-N 0.000 description 3
- CRBJBYGJVIBWIY-UHFFFAOYSA-N 2-isopropylphenol Chemical compound CC(C)C1=CC=CC=C1O CRBJBYGJVIBWIY-UHFFFAOYSA-N 0.000 description 2
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-UHFFFAOYSA-N 0.000 description 2
- VLJSLTNSFSOYQR-UHFFFAOYSA-N 3-propan-2-ylphenol Chemical compound CC(C)C1=CC=CC(O)=C1 VLJSLTNSFSOYQR-UHFFFAOYSA-N 0.000 description 2
- YQUQWHNMBPIWGK-UHFFFAOYSA-N 4-isopropylphenol Chemical compound CC(C)C1=CC=C(O)C=C1 YQUQWHNMBPIWGK-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
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- DZBUGLKDJFMEHC-UHFFFAOYSA-N acridine Chemical compound C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 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
- 125000006615 aromatic heterocyclic group Chemical group 0.000 description 2
- 150000001565 benzotriazoles Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 2
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 2
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKIRBHVFJGXOIS-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC=C1C(C)C OKIRBHVFJGXOIS-UHFFFAOYSA-N 0.000 description 1
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- JBGNINOUZCHFPB-UHFFFAOYSA-N 2,4,6-trimethyl-1h-triazine Chemical compound CN1NC(C)=CC(C)=N1 JBGNINOUZCHFPB-UHFFFAOYSA-N 0.000 description 1
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 1
- WXNZTHHGJRFXKQ-UHFFFAOYSA-N 4-chlorophenol Chemical compound OC1=CC=C(Cl)C=C1 WXNZTHHGJRFXKQ-UHFFFAOYSA-N 0.000 description 1
- GCNTZFIIOFTKIY-UHFFFAOYSA-N 4-hydroxypyridine Chemical compound OC1=CC=NC=C1 GCNTZFIIOFTKIY-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical class Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- OKIZCWYLBDKLSU-UHFFFAOYSA-M N,N,N-Trimethylmethanaminium chloride Chemical compound [Cl-].C[N+](C)(C)C OKIZCWYLBDKLSU-UHFFFAOYSA-M 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- 238000003436 Schotten-Baumann reaction Methods 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 150000003868 ammonium compounds Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 150000001556 benzimidazoles Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940117389 dichlorobenzene Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000004675 formic acid derivatives Chemical class 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- NWVVVBRKAWDGAB-UHFFFAOYSA-N p-methoxyphenol Chemical compound COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 description 1
- 150000002987 phenanthrenes Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- OXNIZHLAWKMVMX-UHFFFAOYSA-N picric acid Chemical class OC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O OXNIZHLAWKMVMX-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003217 pyrazoles Chemical class 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/02—Preparation of esters of carbonic or haloformic acids from phosgene or haloformates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2447348A DE2447348C2 (de) | 1974-10-04 | 1974-10-04 | Verfahren zur Herstellung von Diarylcarbonaten |
| IL48213A IL48213A0 (en) | 1974-10-04 | 1975-09-30 | Process for the preparation of diaryl carbonates |
| US05/618,057 US4012406A (en) | 1974-10-04 | 1975-09-30 | Process for the preparation of diaryl carbonates |
| GB40122/75A GB1498713A (en) | 1974-10-04 | 1975-10-01 | Process for the preparation of diaryl carbonates |
| JP50118315A JPS5850977B2 (ja) | 1974-10-04 | 1975-10-02 | タンサンジアリ−ルノセイゾウホウホウ |
| LU73499A LU73499A1 (enExample) | 1974-10-04 | 1975-10-02 | |
| CA236,906A CA1042912A (en) | 1974-10-04 | 1975-10-02 | Process for the preparation of diaryl carbonates |
| IT51609/75A IT1047665B (it) | 1974-10-04 | 1975-10-02 | Procedimento per preparare diaril carbonati |
| BE160664A BE834167A (fr) | 1974-10-04 | 1975-10-03 | Procede de preparation de carbonates de diaryle |
| DK447375A DK447375A (da) | 1974-10-04 | 1975-10-03 | Fremgangsmade til fremstilling af diarylcarbonater |
| BR7506452*A BR7506452A (pt) | 1974-10-04 | 1975-10-03 | Processo para a preparacao de diarilcarbonatos |
| NL7511678A NL7511678A (nl) | 1974-10-04 | 1975-10-03 | Werkwijze voor het bereiden van diarylcarbonaten. |
| FR7530411A FR2286810A1 (fr) | 1974-10-04 | 1975-10-03 | Procede de preparation de carbonates de diaryle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2447348A DE2447348C2 (de) | 1974-10-04 | 1974-10-04 | Verfahren zur Herstellung von Diarylcarbonaten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2447348A1 DE2447348A1 (de) | 1976-04-15 |
| DE2447348C2 true DE2447348C2 (de) | 1983-11-10 |
Family
ID=5927512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2447348A Expired DE2447348C2 (de) | 1974-10-04 | 1974-10-04 | Verfahren zur Herstellung von Diarylcarbonaten |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4012406A (enExample) |
| JP (1) | JPS5850977B2 (enExample) |
| BE (1) | BE834167A (enExample) |
| BR (1) | BR7506452A (enExample) |
| CA (1) | CA1042912A (enExample) |
| DE (1) | DE2447348C2 (enExample) |
| DK (1) | DK447375A (enExample) |
| FR (1) | FR2286810A1 (enExample) |
| GB (1) | GB1498713A (enExample) |
| IL (1) | IL48213A0 (enExample) |
| IT (1) | IT1047665B (enExample) |
| LU (1) | LU73499A1 (enExample) |
| NL (1) | NL7511678A (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014095776A1 (de) | 2012-12-18 | 2014-06-26 | Bayer Materialscience Ag | Verfahren zur herstellung von diarylcarbonat |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4365055A (en) * | 1981-06-24 | 1982-12-21 | Ppg Industries, Inc. | Process for producing substantially linear carbonate polymer |
| US4697034A (en) * | 1985-11-15 | 1987-09-29 | General Electric Company | Process for making diaryl carbonates |
| JPS62197384U (enExample) * | 1987-04-23 | 1987-12-15 | ||
| US5183919A (en) * | 1989-12-18 | 1993-02-02 | The Dow Chemical Company | Process for the preparation of diaryl carbonates |
| US5136077A (en) * | 1989-12-18 | 1992-08-04 | The Dow Chemical Company | Process for the preparation of diaryl carbonates |
| US5167946A (en) * | 1990-12-27 | 1992-12-01 | The Dow Chemical Company | Diaryl carbonate process |
| US5380909A (en) * | 1991-06-24 | 1995-01-10 | The Dow Chemical Company | Captive carbonyl halide process for production of diaryl carbonates |
| US6175017B1 (en) | 1991-10-22 | 2001-01-16 | Bayer Aktiengesellschaft | Process for the production of aryl carbonates |
| US5731453A (en) * | 1996-03-12 | 1998-03-24 | Ube Industries, Ltd. | Process for producing a diaryl carbonate |
| US5922827A (en) * | 1996-09-27 | 1999-07-13 | Ube Industries, Ltd. | Process for producing a polycarbonate |
| US5834615A (en) * | 1996-09-27 | 1998-11-10 | Ube Industries, Ltd. | Process for producing diaryl carbonate |
| JPH115767A (ja) * | 1997-06-16 | 1999-01-12 | Mitsubishi Chem Corp | ジアリールカーボネートの精製方法 |
| JP4096375B2 (ja) * | 1997-06-16 | 2008-06-04 | 三菱化学株式会社 | ジアリールカーボネートの製造方法 |
| JP3818744B2 (ja) * | 1997-07-08 | 2006-09-06 | 三菱化学株式会社 | ジアリールカーボネートの精製方法 |
| JP4529885B2 (ja) * | 1999-12-28 | 2010-08-25 | 三菱化学株式会社 | 一酸化炭素の製造方法、ホスゲンの製造方法及び炭酸ジアリールの製造方法 |
| DE60042195D1 (de) * | 1999-12-28 | 2009-06-25 | Mitsubishi Chem Corp | Verfahren zum Herstellen von Diarylcarbonat |
| US7151189B2 (en) | 2003-06-19 | 2006-12-19 | General Electric Company | Method and apparatus for waste stream recovery |
| US9175135B2 (en) | 2010-03-30 | 2015-11-03 | Bayer Materialscience Ag | Process for preparing diaryl carbonates and polycarbonates |
| JP6352175B2 (ja) * | 2011-07-08 | 2018-07-04 | コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ | ジアリールカーボネートの製造方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837555A (en) * | 1956-09-20 | 1958-06-03 | Dow Chemical Co | Preparation of carbonate esters |
| US3170946A (en) * | 1961-08-17 | 1965-02-23 | Union Carbide Corp | Preparation of arylchloroformates |
| US3211776A (en) * | 1963-01-22 | 1965-10-12 | Du Pont | Catalytic process for preparing aromatic chloroformates |
| US3211775A (en) * | 1963-01-22 | 1965-10-12 | Du Pont | Catalytic process for preparing aromatic chloroformates |
| US3211774A (en) * | 1963-01-22 | 1965-10-12 | Du Pont | Process for preparing aromatic esters of chloroformic acid |
-
1974
- 1974-10-04 DE DE2447348A patent/DE2447348C2/de not_active Expired
-
1975
- 1975-09-30 IL IL48213A patent/IL48213A0/xx unknown
- 1975-09-30 US US05/618,057 patent/US4012406A/en not_active Expired - Lifetime
- 1975-10-01 GB GB40122/75A patent/GB1498713A/en not_active Expired
- 1975-10-02 LU LU73499A patent/LU73499A1/xx unknown
- 1975-10-02 CA CA236,906A patent/CA1042912A/en not_active Expired
- 1975-10-02 IT IT51609/75A patent/IT1047665B/it active
- 1975-10-02 JP JP50118315A patent/JPS5850977B2/ja not_active Expired
- 1975-10-03 DK DK447375A patent/DK447375A/da unknown
- 1975-10-03 BE BE160664A patent/BE834167A/xx unknown
- 1975-10-03 FR FR7530411A patent/FR2286810A1/fr active Granted
- 1975-10-03 BR BR7506452*A patent/BR7506452A/pt unknown
- 1975-10-03 NL NL7511678A patent/NL7511678A/xx unknown
Non-Patent Citations (1)
| Title |
|---|
| NICHTS-ERMITTELT |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014095776A1 (de) | 2012-12-18 | 2014-06-26 | Bayer Materialscience Ag | Verfahren zur herstellung von diarylcarbonat |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2447348A1 (de) | 1976-04-15 |
| US4012406A (en) | 1977-03-15 |
| LU73499A1 (enExample) | 1976-08-19 |
| BE834167A (fr) | 1976-04-05 |
| CA1042912A (en) | 1978-11-21 |
| NL7511678A (nl) | 1976-04-06 |
| JPS5850977B2 (ja) | 1983-11-14 |
| BR7506452A (pt) | 1976-08-10 |
| FR2286810B1 (enExample) | 1980-02-08 |
| FR2286810A1 (fr) | 1976-04-30 |
| DK447375A (da) | 1976-04-05 |
| IL48213A0 (en) | 1975-11-25 |
| JPS5163148A (en) | 1976-06-01 |
| GB1498713A (en) | 1978-01-25 |
| IT1047665B (it) | 1980-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2447348C2 (de) | Verfahren zur Herstellung von Diarylcarbonaten | |
| DE2837341A1 (de) | Verfahren zur herstellung von organischen mono- und polyisocyanaten durch thermische spaltung der hydrochloride trisubstituierter harnstoffe | |
| DE2408813A1 (de) | N-carbamoyloxypyridiniumsalze und verfahren zur herstellung derselben | |
| DE3241568A1 (de) | Verfahren zur herstellung von chlormethylchlorformiat | |
| DE2447349A1 (de) | Verfahren zur herstellung von aliphatischen polycarbonaten und aliphatischaromatischen copolycarbonaten | |
| EP0523619B1 (de) | Verfahren zur Herstellung von N-Cyanimidocarbonaten | |
| DE2601399C2 (de) | Cis-β-[Trimethylammonium]-acrylnitriltosylat, Verfahren zu dessen Herstellung und dessen Verwendung zur Herstellung von Cyclocytidintosylat | |
| CH639644A5 (de) | Verfahren zur herstellung von isocyanaten. | |
| DE69332923T2 (de) | Substituierte 2,3-Dicarboxypyridiniumnitrate | |
| DE3324845C1 (de) | Verfahren zur Herstellung von S,S-Diphenylsulfoximin | |
| DE3330192A1 (de) | 4-alkylimidazol-derivate, ihre herstellung und verwendung | |
| CH630367A5 (de) | Verfahren zur herstellung von 4-nitroimidazolen. | |
| DE2208924A1 (de) | Verfahren zur herstellung von 4-nitroimidazolen | |
| DE2742158B2 (de) | Verfahren zur Herstellung substituierter Harnstoffe | |
| DE3218976A1 (de) | Verfahren zur herstellung von phenylpyridazinverbindungen | |
| AT214425B (de) | Verfahren zur Herstellung von N-substituierten Malonimiden und deren Polymeren | |
| DE1261855B (de) | Verfahren zur Herstellung von reinem 2-N,N-Dimethylcarbamyl-3-methyl-pyrazolyl-(5)-N,N-dimethylcarbamat | |
| DE1940369A1 (de) | Neue heterocyclische Verbindungen | |
| DE2615586A1 (de) | Neues verfahren zur herstellung bestimmter pyrazolo(3,4-b)pyridinketone | |
| DE2264638C2 (de) | 5'-Acetyl-2,2'-cyclocytidin-Derivate | |
| DE3347526A1 (de) | Verfahren zur herstellung substituierter chinazolin-2.4(1h.3h)-dione | |
| DE3413709A1 (de) | Verfahren zur herstellung von 6-phenyl-4h-s-triazolo (4,3-a) (1,4) benzodiazepinen | |
| DE1216880B (de) | Verfahren zur Herstellung von substituierten Tetrazolen | |
| DE3035792A1 (de) | Verfahren zur herstellung von 2-oxodihydrobenzo (d) (1,3)-oxazinen und o-aminobenzylalkoholen | |
| DE2024983A1 (de) | Kristallisierte Hydrogensulfate quarternarer Ammoniumverbindungen und deren Verwendung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |