CA2168630A1 - Method for Producing an Aromatic Polycarbonate - Google Patents

Method for Producing an Aromatic Polycarbonate

Info

Publication number
CA2168630A1
CA2168630A1 CA2168630A CA2168630A CA2168630A1 CA 2168630 A1 CA2168630 A1 CA 2168630A1 CA 2168630 A CA2168630 A CA 2168630A CA 2168630 A CA2168630 A CA 2168630A CA 2168630 A1 CA2168630 A1 CA 2168630A1
Authority
CA
Canada
Prior art keywords
wire
polymerizing material
aromatic
producing
dihydroxy compound
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.)
Granted
Application number
CA2168630A
Other languages
French (fr)
Other versions
CA2168630C (en
Inventor
Kyosuke Komiya
Yoshifumi Kawakami
Hiroshige Okamoto
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.)
Asahi Kasei Corp
Original Assignee
Asahi Kasei Kogyo KK
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 Asahi Kasei Kogyo KK filed Critical Asahi Kasei Kogyo KK
Priority to CA002168630A priority Critical patent/CA2168630C/en
Publication of CA2168630A1 publication Critical patent/CA2168630A1/en
Application granted granted Critical
Publication of CA2168630C publication Critical patent/CA2168630C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C08G64/04—Aromatic polycarbonates

Abstract

A method for producing an aromatic polycarbonate comprises feeding to a feeding zone (having a foraminous plate) at least one polymerizing material selected from the group consisting of a) a molten monomer mixture of an aromatic dihydroxy compound and a diaryl carbonate, and b) a molten prepolymer obtained by a process comprising reacting an aromatic dihydroxy compound with a diaryl carbonate, and allowing the polymerizing material to pass downwardly through the foraminous plate and fall along and in contact with a wire through a wire-wetting fall polymerization reaction zone, thereby effecting polymerization of the polymerizing material during the wire-wetting fall thereof. Colorless and high quality aromatic polycarbonates are thus stably produced at a high polymerization rate for a prolonged period of time, using an apparatus which has excellent sealing properties under high vacuum and maintenance of which is easy.
CA002168630A 1996-02-01 1996-02-01 Method for producing an aromatic polycarbonate Expired - Lifetime CA2168630C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002168630A CA2168630C (en) 1996-02-01 1996-02-01 Method for producing an aromatic polycarbonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002168630A CA2168630C (en) 1996-02-01 1996-02-01 Method for producing an aromatic polycarbonate

Publications (2)

Publication Number Publication Date
CA2168630A1 true CA2168630A1 (en) 1997-08-02
CA2168630C CA2168630C (en) 1998-10-06

Family

ID=4157480

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002168630A Expired - Lifetime CA2168630C (en) 1996-02-01 1996-02-01 Method for producing an aromatic polycarbonate

Country Status (1)

Country Link
CA (1) CA2168630C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002051606A1 (en) * 2000-12-27 2002-07-04 Bayer Aktiengesellschaft Device for carrying out material exchange processes
US7959133B2 (en) 2003-11-06 2011-06-14 Zhaoyan Liu Grid falling film devolatilizer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002051606A1 (en) * 2000-12-27 2002-07-04 Bayer Aktiengesellschaft Device for carrying out material exchange processes
US6761797B2 (en) 2000-12-27 2004-07-13 Bayer Aktiengesellschaft Apparatus for carrying out mass transfer processes
US7959133B2 (en) 2003-11-06 2011-06-14 Zhaoyan Liu Grid falling film devolatilizer

Also Published As

Publication number Publication date
CA2168630C (en) 1998-10-06

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Effective date: 20160201