JPS5497698A - Preparation of polycarbonate - Google Patents

Preparation of polycarbonate

Info

Publication number
JPS5497698A
JPS5497698A JP374878A JP374878A JPS5497698A JP S5497698 A JPS5497698 A JP S5497698A JP 374878 A JP374878 A JP 374878A JP 374878 A JP374878 A JP 374878A JP S5497698 A JPS5497698 A JP S5497698A
Authority
JP
Japan
Prior art keywords
polycarbonate
emulsion
weight
parts
sodium chloride
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.)
Pending
Application number
JP374878A
Other languages
Japanese (ja)
Inventor
Koji Hashimoto
Masayoshi Miyauchi
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.)
Teijin Ltd
Original Assignee
Teijin Chemicals Ltd
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 Teijin Chemicals Ltd filed Critical Teijin Chemicals Ltd
Priority to JP374878A priority Critical patent/JPS5497698A/en
Publication of JPS5497698A publication Critical patent/JPS5497698A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To prepare a polycarbonate which is free from waterdrops and impurities and can be easily purified, by adding specific amount of sodium chloride to the emulsion solution of the polymer.
CONSTITUTION: An emulsion of a polycarbonate is prepared by reacting a dioxy compound, e.g. bis(4-hydroxyphenyl)methane, etc., with phosgene in an inert organic solvent, e.g. methylene chloride, etc., in the presence of an alkali metal hydroxide. Sodium chloride(preferably 1W15 parts by weight on the basis of 100 parts by weight of the dioxy compound) is added to the emulsion and the organic layer containing the polycarbonate is separated.
COPYRIGHT: (C)1979,JPO&Japio
JP374878A 1978-01-19 1978-01-19 Preparation of polycarbonate Pending JPS5497698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP374878A JPS5497698A (en) 1978-01-19 1978-01-19 Preparation of polycarbonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP374878A JPS5497698A (en) 1978-01-19 1978-01-19 Preparation of polycarbonate

Publications (1)

Publication Number Publication Date
JPS5497698A true JPS5497698A (en) 1979-08-01

Family

ID=11565809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP374878A Pending JPS5497698A (en) 1978-01-19 1978-01-19 Preparation of polycarbonate

Country Status (1)

Country Link
JP (1) JPS5497698A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5653132A (en) * 1979-09-20 1981-05-12 Bayer Ag Manufacture of aromatic polycarbonate by interfacial reaction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5653132A (en) * 1979-09-20 1981-05-12 Bayer Ag Manufacture of aromatic polycarbonate by interfacial reaction

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