GB1074398A - The phosgenation of aromatic dials - Google Patents

The phosgenation of aromatic dials

Info

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
Application number
GB1415365A
Inventor
Robert William Miller
John Aloysius Schmitt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1074398A publication Critical patent/GB1074398A/en
Expired legal-status Critical Current

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.
GB1415365A 1965-04-15 1965-04-02 The phosgenation of aromatic dials Expired GB1074398A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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