GB1110736A - Transesterification process for the production of high molecular weight thermoplasticpolycarbonates - Google Patents
Transesterification process for the production of high molecular weight thermoplasticpolycarbonatesInfo
- Publication number
- GB1110736A GB1110736A GB5156866A GB5156866A GB1110736A GB 1110736 A GB1110736 A GB 1110736A GB 5156866 A GB5156866 A GB 5156866A GB 5156866 A GB5156866 A GB 5156866A GB 1110736 A GB1110736 A GB 1110736A
- Authority
- GB
- United Kingdom
- Prior art keywords
- monohydric phenol
- carbonate
- organic dihydroxy
- mole
- effected
- 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
- 238000005809 transesterification reaction Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- MIHINWMALJZIBX-UHFFFAOYSA-N cyclohexa-2,4-dien-1-ol Chemical compound OC1CC=CC=C1 MIHINWMALJZIBX-UHFFFAOYSA-N 0.000 abstract 4
- 150000001875 compounds Chemical class 0.000 abstract 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 2
- -1 diaryl carbonate Chemical compound 0.000 abstract 2
- 238000010923 batch production Methods 0.000 abstract 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 150000002989 phenols Chemical class 0.000 abstract 1
- 229920000515 polycarbonate Polymers 0.000 abstract 1
- 239000004417 polycarbonate Substances 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
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
- C08G64/30—General preparatory processes using carbonates
- C08G64/307—General preparatory processes using carbonates 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)
Abstract
Polycarbonates are made by (a) reacting substantially equimolecular quantities of a diaryl carbonate and an organic dihydroxy compound at 150 DEG to 250 DEG C. in a closed system to produce a mixture of a monohydric phenol and a monomeric mixed carbonate containing the residues of one mole of the organic dihydroxy compound and one mole of the monohydric phenol component of the diaryl carbonate, (b) distilling off the monohydric phenol under reduced pressure and (c) polycondensing the monomeric mixed carbonate at 150 DEG to 350 DEG C., preferably under reduced pressure. Step (a) may be effected under reflux of the liberated monohydric phenol, or in an autoclave under pressure or continuously in a pressure tube. Transesterification catalysts may be used. Step (c) may be effected by a batch process, or first in a thin film evaporator and then in a screw evaporator, or in a cascade of three stirred reaction vessels in which the temperatures are respectively 210 DEG , 230 DEG and 260 DEG C., and the pressures are respectively 30, 10 and less than 2 mm. of Hg. Specified organic dihydroxy compounds are various alkanediols, 1:4 - dihydroxycyclohexane and various dihydric phenols. Examples describe reacting diphenyl carbonate and bisphenol A.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0048040 | 1965-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1110736A true GB1110736A (en) | 1968-04-24 |
Family
ID=7102000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5156866A Expired GB1110736A (en) | 1965-12-29 | 1966-11-17 | Transesterification process for the production of high molecular weight thermoplasticpolycarbonates |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE691898A (en) |
| DE (1) | DE1570640A1 (en) |
| FR (1) | FR1506059A (en) |
| GB (1) | GB1110736A (en) |
| NL (1) | NL6618278A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4948871A (en) * | 1987-09-28 | 1990-08-14 | Asahi Kasei Kogyo Kabushiki Kaisha | Method for producing a crystallized aromatic polycarbonate, and a crystallized aromatic polycarbonate obtained thereby |
| US5288838A (en) * | 1992-04-07 | 1994-02-22 | Council Of Scientific & Industrial Research | Preparation of polycarbonates with bioxyanion catalyst |
| EP0926181A2 (en) * | 1997-12-26 | 1999-06-30 | General Electric Company | Manufacturing method for polycarbonate |
-
1965
- 1965-12-29 DE DE19651570640 patent/DE1570640A1/en active Pending
-
1966
- 1966-11-17 GB GB5156866A patent/GB1110736A/en not_active Expired
- 1966-12-23 FR FR88765A patent/FR1506059A/en not_active Expired
- 1966-12-28 NL NL6618278A patent/NL6618278A/xx unknown
- 1966-12-28 BE BE691898D patent/BE691898A/xx unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4948871A (en) * | 1987-09-28 | 1990-08-14 | Asahi Kasei Kogyo Kabushiki Kaisha | Method for producing a crystallized aromatic polycarbonate, and a crystallized aromatic polycarbonate obtained thereby |
| US5288838A (en) * | 1992-04-07 | 1994-02-22 | Council Of Scientific & Industrial Research | Preparation of polycarbonates with bioxyanion catalyst |
| EP0926181A2 (en) * | 1997-12-26 | 1999-06-30 | General Electric Company | Manufacturing method for polycarbonate |
| EP0926181A3 (en) * | 1997-12-26 | 1999-07-28 | General Electric Company | Manufacturing method for polycarbonate |
| US6635710B2 (en) | 1997-12-26 | 2003-10-21 | General Electric Company | Manufacturing method for polycarbonate |
Also Published As
| Publication number | Publication date |
|---|---|
| BE691898A (en) | 1967-06-28 |
| DE1570640A1 (en) | 1970-01-22 |
| NL6618278A (en) | 1967-06-30 |
| FR1506059A (en) | 1967-12-15 |
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