JPS57190019A - Preparation of polyester - Google Patents

Preparation of polyester

Info

Publication number
JPS57190019A
JPS57190019A JP7466781A JP7466781A JPS57190019A JP S57190019 A JPS57190019 A JP S57190019A JP 7466781 A JP7466781 A JP 7466781A JP 7466781 A JP7466781 A JP 7466781A JP S57190019 A JPS57190019 A JP S57190019A
Authority
JP
Japan
Prior art keywords
polyester
ethylene glycol
composed mainly
gallium compound
terephthalic acid
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
JP7466781A
Other languages
Japanese (ja)
Inventor
Toshihiro Izumitani
Nobuhiro Teinaga
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.)
NIPPON ESTER KK
Nippon Ester Co Ltd
Original Assignee
NIPPON ESTER KK
Nippon Ester Co 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 NIPPON ESTER KK, Nippon Ester Co Ltd filed Critical NIPPON ESTER KK
Priority to JP7466781A priority Critical patent/JPS57190019A/en
Publication of JPS57190019A publication Critical patent/JPS57190019A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prepare a polyester free from insoluble matters and having high transparency, by adding an organic gallium compound as a catalyst for the polymerization of terephthalic acid and ethylene glycol, etc.
CONSTITUTION: The objective polyester is repared by esterifying (A) terephthalic acid or a difunctional carboxylic acid composed mainly thereof, or its ester- forming derivative with (B) ethylene glycol or a glycol component composed mainly thereof, and then subjecting the product to the polycondensation reaction in the presence of 0.1×10-4W10×10-4mol (based on 1mol of the acid composition constituting the polyester) of an organic gallium compound of formula R2GaX, RGaX2 or RGaO (R is lower alkyl or aryl; X is H, F, Cl, Br, OH, OR, etc.) (e.g. dimethylgallium hydride).
COPYRIGHT: (C)1982,JPO&Japio
JP7466781A 1981-05-18 1981-05-18 Preparation of polyester Pending JPS57190019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7466781A JPS57190019A (en) 1981-05-18 1981-05-18 Preparation of polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7466781A JPS57190019A (en) 1981-05-18 1981-05-18 Preparation of polyester

Publications (1)

Publication Number Publication Date
JPS57190019A true JPS57190019A (en) 1982-11-22

Family

ID=13553807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7466781A Pending JPS57190019A (en) 1981-05-18 1981-05-18 Preparation of polyester

Country Status (1)

Country Link
JP (1) JPS57190019A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997019974A1 (en) * 1995-11-30 1997-06-05 Eastman Chemical Company Polyesters modified with 1,4-cyclohexanedimethanol having high clarity prepared utilizing an antimony containing catalyst/stabilizer system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997019974A1 (en) * 1995-11-30 1997-06-05 Eastman Chemical Company Polyesters modified with 1,4-cyclohexanedimethanol having high clarity prepared utilizing an antimony containing catalyst/stabilizer system

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