ES2137922T3 - Procedimiento para preparar oligomeros policarbonato de monocloroformiato de bisfenol y el producto. - Google Patents
Procedimiento para preparar oligomeros policarbonato de monocloroformiato de bisfenol y el producto.Info
- Publication number
- ES2137922T3 ES2137922T3 ES91106806T ES91106806T ES2137922T3 ES 2137922 T3 ES2137922 T3 ES 2137922T3 ES 91106806 T ES91106806 T ES 91106806T ES 91106806 T ES91106806 T ES 91106806T ES 2137922 T3 ES2137922 T3 ES 2137922T3
- Authority
- ES
- Spain
- Prior art keywords
- bisphenol
- mixture
- introduction
- oilomomers
- monocloroformiate
- 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 - Lifetime
Links
Classifications
-
- 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
- C08G64/20—General preparatory processes
- C08G64/22—General preparatory processes using carbonyl halides
- C08G64/24—General preparatory processes using carbonyl halides and phenols
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
SE SUMINISTRA UN PROCESO PARA HACER OLIGOMEROS POLICARBONADOS DE FORMATO MONOCLORO DE BISFENOL AL INTRODUCIR CONTINUAMENTE FOSGENO EN UNA MEZCLA DE BISFENOL BAJO CONDICIONES DE AGITACION INTERFACIAL. EL PH DE LA MEZCLA DE FOSGENACION CAE MAS ABAJO DE UN VALOR PREDETERMINADO, Y ASI EFECTUA LA INTRODUCCION DE UN HIDROXIDO ALCALINO ACUOSO CONSISTENTE CON LA UTILIZACION DE SISTEMAS DE CONTROL DE BASE PARTICULAR. DE ACUERDO CON EL USO DE TALES SISTEMAS DE CONTROL, SE PUEDE ESTABILIZAR EL PH DE LA MEZCLA, Y TERMINAR LA FOSGENACION Y LA INTRODUCCION DE BASE CUANDO EL PH DE LA MEZCLA SE HUNDE DE REPENTE HASTA 1 UNIDAD DE PH, O SE NOTA UN INCREMENTO REPENTINO EN EL NIVEL DE FLUJO DE UN HIDROXIDO DE METAL ALCALINO ACUOSO DESPUES DE UNA MESETA EN EL PROMEDIO DE INTRODUCCION DE BASE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51998090A | 1990-05-07 | 1990-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2137922T3 true ES2137922T3 (es) | 2000-01-01 |
Family
ID=24070683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES91106806T Expired - Lifetime ES2137922T3 (es) | 1990-05-07 | 1991-04-26 | Procedimiento para preparar oligomeros policarbonato de monocloroformiato de bisfenol y el producto. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0456053B1 (es) |
JP (1) | JPH0778119B2 (es) |
DE (1) | DE69131672T2 (es) |
ES (1) | ES2137922T3 (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10016544A1 (de) | 2000-04-03 | 2001-10-11 | Bayer Ag | C2-phenylsubstituierte Ketoenole |
WO2004076512A2 (en) * | 2003-02-21 | 2004-09-10 | General Electric Company | Transparent and high-heat polycarbonate-polysiloxane copolymers and transparent blends with polycarbonate and a process for preparing same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3193528A (en) * | 1959-10-12 | 1965-07-06 | Dow Chemical Co | Process of preparing monochloroformates and process of preparing polycarbonates therefrom |
IT998851B (it) * | 1972-10-30 | 1976-02-20 | Gen Electric | Procedimento per la preparazione di policarbonati aromatici |
US4810813A (en) * | 1986-09-08 | 1989-03-07 | General Electric Company | Method for making reaction products of phosgene and dihydric phenol with stable suspension of dihydric phenol, alkali metal hydroxide and water |
US4737573A (en) * | 1986-10-10 | 1988-04-12 | General Electric Company | Method for polymerizing aromatic bischloroformate composition to polycarbonate |
EP0274743A3 (en) * | 1987-01-16 | 1989-07-26 | General Electric Company | Bischloroformate preparation method with phosgene removal and monochloroformate conversion |
US4743676A (en) * | 1987-05-07 | 1988-05-10 | General Electric Company | Method for preparing polycarbonate of controlled molecular weight from aromatic bischloroformate |
-
1991
- 1991-04-19 JP JP3113640A patent/JPH0778119B2/ja not_active Expired - Lifetime
- 1991-04-26 DE DE1991631672 patent/DE69131672T2/de not_active Expired - Fee Related
- 1991-04-26 EP EP19910106806 patent/EP0456053B1/en not_active Expired - Lifetime
- 1991-04-26 ES ES91106806T patent/ES2137922T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0456053A3 (en) | 1992-06-10 |
DE69131672D1 (de) | 1999-11-11 |
EP0456053B1 (en) | 1999-10-06 |
DE69131672T2 (de) | 2000-05-25 |
EP0456053A2 (en) | 1991-11-13 |
JPH04270729A (ja) | 1992-09-28 |
JPH0778119B2 (ja) | 1995-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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