GB1074398A - The phosgenation of aromatic dials - Google Patents
The phosgenation of aromatic dialsInfo
- Publication number
- GB1074398A GB1074398A GB1415365A GB1415365A GB1074398A GB 1074398 A GB1074398 A GB 1074398A GB 1415365 A GB1415365 A GB 1415365A GB 1415365 A GB1415365 A GB 1415365A GB 1074398 A GB1074398 A GB 1074398A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diol
- phosgenation
- aromatic
- monochloroformates
- monochloroformate
- 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
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
- C08G64/26—General preparatory processes using halocarbonates
-
- 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
-
- 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
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)
Abstract
A diol monochloroformate is made by the phosgenation of an aromatic diol, the hydroxyl groups of which are bonded to aromatic carbon atoms the phosgene being mixed with an aqueous alkaline solution of the diol in a proportion to provide substantially complete precipitation of the monochloroformate of the diol. The products are employed in the production of polycarbonate resins. Representative of dihydroxy aromatic compounds employed as starting materials in examples are p,p1-isopropylidenebisphenol and its 2,21-dichloro- and 2,21,5,51-tetrabromo derivatives and 4,41 - dihydroxybenzophenone.ALSO:Polycarbonate resins are obtained by dispersing one or more monochloroformates, obtained by phosgenation of aromtic dihydroxy compounds (see Division C2) in a solevnt, admixing the solution with aqueous alkali and a condensation catalyst and thereafter subjecting the mixture to condensation polymerization. Many examples are furnished in which such monochloroformates as those of bisphenol A and its 2,21 - dichloro - and 2,21,5,51 - tetrabromo derivatives are converted to polycarbonates in the presence of organic solvents and benzyl trimethylammonium chloride.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR13331A FR1432080A (en) | 1965-04-15 | 1965-04-15 | Process for the phosgenation of aromatic diols, more particularly for the preparation of polycarbonate resins |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1074398A true GB1074398A (en) | 1967-07-05 |
Family
ID=8576488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1415365A Expired GB1074398A (en) | 1965-04-15 | 1965-04-02 | The phosgenation of aromatic dials |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1432080A (en) |
GB (1) | GB1074398A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4237259A (en) * | 1978-12-06 | 1980-12-02 | General Electric Company | Organic materials having meta, para-isopropylidene diphenoxy units and method |
US4268647A (en) * | 1978-12-06 | 1981-05-19 | General Electric Company | Organic materials having meta, para-isopropylidene diphenoxy units and method |
US5097009A (en) * | 1990-09-24 | 1992-03-17 | General Electric Company | Method for making cyclic oligomeric aromatic polycarbonates from monochloroformate |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4601858A (en) * | 1985-06-13 | 1986-07-22 | General Electric Company | Method for preparing bischloroformate compositions |
US4994595A (en) * | 1986-11-04 | 1991-02-19 | General Electric Company | Preparation of spirobiindane bisphenol bischloroformate compositions |
-
1965
- 1965-04-02 GB GB1415365A patent/GB1074398A/en not_active Expired
- 1965-04-15 FR FR13331A patent/FR1432080A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4237259A (en) * | 1978-12-06 | 1980-12-02 | General Electric Company | Organic materials having meta, para-isopropylidene diphenoxy units and method |
US4268647A (en) * | 1978-12-06 | 1981-05-19 | General Electric Company | Organic materials having meta, para-isopropylidene diphenoxy units and method |
US5097009A (en) * | 1990-09-24 | 1992-03-17 | General Electric Company | Method for making cyclic oligomeric aromatic polycarbonates from monochloroformate |
EP0477557A2 (en) * | 1990-09-24 | 1992-04-01 | General Electric Company | Method for making cyclic oligomeric aromatic polycarbonates |
EP0477557A3 (en) * | 1990-09-24 | 1992-10-14 | General Electric Company | Method for making cyclic oligomeric aromatic polycarbonates |
Also Published As
Publication number | Publication date |
---|---|
FR1432080A (en) | 1966-03-18 |
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