GB1409614A - Process for preparing aromatic carbonate polymers - Google Patents

Process for preparing aromatic carbonate polymers

Info

Publication number
GB1409614A
GB1409614A GB4480273A GB4480273A GB1409614A GB 1409614 A GB1409614 A GB 1409614A GB 4480273 A GB4480273 A GB 4480273A GB 4480273 A GB4480273 A GB 4480273A GB 1409614 A GB1409614 A GB 1409614A
Authority
GB
United Kingdom
Prior art keywords
preparing
carbonate precursor
aromatic carbonate
polycarbonate
preparing aromatic
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
GB4480273A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Priority to GB4480273A priority Critical patent/GB1409614A/en
Publication of GB1409614A publication Critical patent/GB1409614A/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
    • C08G64/22—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)

Abstract

1409614 Preparing polycarbonates GENERAL ELECTRIC CO 25 Sept 1973 44802/73 Heading C3R A process for preparing a polycarbonate comprises adding at least 70 weight per cent of the stoichiometric quantity of a carbonate precursor to a dihydric phenol in an aqueous medium, a catalyst, a molecular weight regulator and a solvent for the polycarbonate being present, while simultaneously adding to the reaction medium sufficient alkali or alkaline earth metal hydroxide to maintain a pH of 6 to 10, then adding sufficient of the hydroxide to mix the pH to at least 11 and maintaining a pH of at least 11 while reacting any remaining amount of the. carbonate precursor. Bisphenol A and phosgene are used in the examples with p-tertbutylphenol, triethylamine and methylene chloride.
GB4480273A 1973-09-25 1973-09-25 Process for preparing aromatic carbonate polymers Expired GB1409614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4480273A GB1409614A (en) 1973-09-25 1973-09-25 Process for preparing aromatic carbonate polymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4480273A GB1409614A (en) 1973-09-25 1973-09-25 Process for preparing aromatic carbonate polymers

Publications (1)

Publication Number Publication Date
GB1409614A true GB1409614A (en) 1975-10-08

Family

ID=10434817

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4480273A Expired GB1409614A (en) 1973-09-25 1973-09-25 Process for preparing aromatic carbonate polymers

Country Status (1)

Country Link
GB (1) GB1409614A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263432A1 (en) * 1986-10-10 1988-04-13 General Electric Company Method for preparing aromatic bischloroformate compositions and polycarbonates
US5235026A (en) * 1991-06-04 1993-08-10 Bayer Aktiengesellschaft Continuous production of polycarbonates
US5258484A (en) * 1991-06-27 1993-11-02 Bayer Aktiengesellschaft Process for the production of polycarbonate
US5275758A (en) * 1991-09-05 1994-01-04 Bayer Aktiengesellschaft Production of ultrafine suspensions of bisphenol, sodium hydroxide and water
US5376741A (en) * 1992-11-20 1994-12-27 Bayer Aktiengesellschaft Process for the preparation of polycarbonates
US5412060A (en) * 1991-08-20 1995-05-02 Bayer Aktiengesellschaft Process for the production of polycarbonate of constant viscosity
US5508375A (en) * 1992-12-10 1996-04-16 Bayer Aktiengesellschaft Process for the preparation of polycarbonates
WO2002057337A2 (en) * 2000-11-29 2002-07-25 General Electric Company Method for controlling the manufacture of polycarbonate and the polycarbonate formed thereby

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263432A1 (en) * 1986-10-10 1988-04-13 General Electric Company Method for preparing aromatic bischloroformate compositions and polycarbonates
US5235026A (en) * 1991-06-04 1993-08-10 Bayer Aktiengesellschaft Continuous production of polycarbonates
US5258484A (en) * 1991-06-27 1993-11-02 Bayer Aktiengesellschaft Process for the production of polycarbonate
US5412060A (en) * 1991-08-20 1995-05-02 Bayer Aktiengesellschaft Process for the production of polycarbonate of constant viscosity
US5275758A (en) * 1991-09-05 1994-01-04 Bayer Aktiengesellschaft Production of ultrafine suspensions of bisphenol, sodium hydroxide and water
US5376741A (en) * 1992-11-20 1994-12-27 Bayer Aktiengesellschaft Process for the preparation of polycarbonates
US5508375A (en) * 1992-12-10 1996-04-16 Bayer Aktiengesellschaft Process for the preparation of polycarbonates
WO2002057337A2 (en) * 2000-11-29 2002-07-25 General Electric Company Method for controlling the manufacture of polycarbonate and the polycarbonate formed thereby
WO2002057337A3 (en) * 2000-11-29 2003-01-23 Gen Electric Method for controlling the manufacture of polycarbonate and the polycarbonate formed thereby
US6646096B2 (en) 2000-11-29 2003-11-11 General Electric Company Method for controlling the manufacture of polycarbonate and the polycarbonate formed thereby

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee