JPS5738818A - Production of polyester - Google Patents

Production of polyester

Info

Publication number
JPS5738818A
JPS5738818A JP11347780A JP11347780A JPS5738818A JP S5738818 A JPS5738818 A JP S5738818A JP 11347780 A JP11347780 A JP 11347780A JP 11347780 A JP11347780 A JP 11347780A JP S5738818 A JPS5738818 A JP S5738818A
Authority
JP
Japan
Prior art keywords
component
glycol
polyhydric alcohol
dicarboxylic acid
polyester
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
JP11347780A
Other languages
Japanese (ja)
Inventor
Kenji Terajima
Hitoshi Takayama
Hideo Komatsu
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP11347780A priority Critical patent/JPS5738818A/en
Publication of JPS5738818A publication Critical patent/JPS5738818A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To produce a polyester having excellent transparency and consistency in mechanical properties, by esterifying a dicarboxylic acid with a glycol in the presence of an organo-titanium compound and a specified polyhydric alcohol and, thereafter, polycondensing the resulting ester.
CONSTITUTION: A dicarboxylic acid component (A) containing at least 50mol% terephthalic acid is esterified with a glycol (B) containing at least 70mol% 1,4- butanediol in the presence of an organotitanium compound (C) as an esterifying catalyst containing 0.001W0.03wt% Ti based on polymer formed, e.g., tetraalkyl titanate, and at least 0.5mol time (with respect to Ti of component C) and up to 0.3mol% (based on component A) of polyhydric alcohol (D) of the formula, wherein R is a hydrocarbyl or methylol, at a temperature which is gradually raised from about 150°C to 220W230°C. After the esterification, the reaction system is gradually evacuated to below 1mmHg and the reaction mixture is polycondensed at 230W 260°C.
COPYRIGHT: (C)1982,JPO&Japio
JP11347780A 1980-08-20 1980-08-20 Production of polyester Pending JPS5738818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11347780A JPS5738818A (en) 1980-08-20 1980-08-20 Production of polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11347780A JPS5738818A (en) 1980-08-20 1980-08-20 Production of polyester

Publications (1)

Publication Number Publication Date
JPS5738818A true JPS5738818A (en) 1982-03-03

Family

ID=14613256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11347780A Pending JPS5738818A (en) 1980-08-20 1980-08-20 Production of polyester

Country Status (1)

Country Link
JP (1) JPS5738818A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5083496A (en) * 1973-11-12 1975-07-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5083496A (en) * 1973-11-12 1975-07-05

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