AR016018A1 - Metodo para preparar diarilcarbonatos con selectividad mejorada - Google Patents
Metodo para preparar diarilcarbonatos con selectividad mejoradaInfo
- Publication number
- AR016018A1 AR016018A1 ARP990100182A ARP990100182A AR016018A1 AR 016018 A1 AR016018 A1 AR 016018A1 AR P990100182 A ARP990100182 A AR P990100182A AR P990100182 A ARP990100182 A AR P990100182A AR 016018 A1 AR016018 A1 AR 016018A1
- Authority
- AR
- Argentina
- Prior art keywords
- polyaniline
- polycarbonates
- preparing
- bromide
- diarilcarbonates
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/96—Esters of carbonic or haloformic acids
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)
Abstract
Se preparan diarilcarbonatos tales como el carbonato de difenilo mediante la reaccion de compuestos hidroxiaromático tales como fenol y oxígeno ymonoxido de carbono en presencia de una composicion catalizadora constituida por un metal del Grupo VIIIBtal como paladio o un compuesto del mismo, una fuentede bromuro tal como bromuro de amonio cuaternario o hexaalquilguanidinio y una polianilina en forma parcialmente oxidada y parcialmente reducida. Lapolianilina es suplementada con haluro en formade una mezcla con un polímero aglutinante que contiene grupos éter o éster y una sal formadora decomplejos. Los carbonatos de diarilo son valiosos intermediarios para la preparacion de policarbonatos por transesterificacion con bisfenoles en la fusion.Este método de preparacion de policarbonatos ofrece ventajas ambientales con respecto a los métodos que emplean el fosfeno, un gas toxico, como reactivoe hidrocarburos alifáticos clorados ambientalmente nocivos, tales como el cloruro de metileno, como solventes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN175CA1998 | 1998-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AR016018A1 true AR016018A1 (es) | 2001-05-30 |
Family
ID=11081344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP990100182A AR016018A1 (es) | 1998-02-03 | 1999-01-18 | Metodo para preparar diarilcarbonatos con selectividad mejorada |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH11279114A (es) |
| KR (1) | KR19990072367A (es) |
| CN (1) | CN1161320C (es) |
| AR (1) | AR016018A1 (es) |
| BR (1) | BR9900615A (es) |
| ZA (1) | ZA99367B (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010535833A (ja) * | 2007-08-14 | 2010-11-25 | シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー | アルキレングリコールの調製方法 |
| TWI427061B (zh) * | 2010-12-28 | 2014-02-21 | Preparation of Diaryl Carbonate | |
| WO2021043743A1 (en) | 2019-09-05 | 2021-03-11 | Shell Internationale Research Maatschappij B.V. | Process and system for the production of ethylene carbonate and/or ethylene glycol |
-
1999
- 1999-01-18 AR ARP990100182A patent/AR016018A1/es unknown
- 1999-01-19 ZA ZA9900367A patent/ZA99367B/xx unknown
- 1999-01-27 JP JP11017856A patent/JPH11279114A/ja active Pending
- 1999-02-01 CN CNB991017285A patent/CN1161320C/zh not_active Expired - Fee Related
- 1999-02-02 KR KR1019990003345A patent/KR19990072367A/ko not_active Application Discontinuation
- 1999-02-02 BR BR9900615-4A patent/BR9900615A/pt not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11279114A (ja) | 1999-10-12 |
| KR19990072367A (ko) | 1999-09-27 |
| ZA99367B (en) | 1999-07-19 |
| CN1227218A (zh) | 1999-09-01 |
| CN1161320C (zh) | 2004-08-11 |
| BR9900615A (pt) | 2000-04-11 |
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