JPS5421496A - Preparation of polyester having high polymerization degree - Google Patents

Preparation of polyester having high polymerization degree

Info

Publication number
JPS5421496A
JPS5421496A JP8563477A JP8563477A JPS5421496A JP S5421496 A JPS5421496 A JP S5421496A JP 8563477 A JP8563477 A JP 8563477A JP 8563477 A JP8563477 A JP 8563477A JP S5421496 A JPS5421496 A JP S5421496A
Authority
JP
Japan
Prior art keywords
polyester
polymerization degree
preparation
high polymerization
prepare
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
JP8563477A
Other languages
Japanese (ja)
Inventor
Shizuo Azuma
Noritsugu Saiki
Shoji Kawase
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 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 Ltd filed Critical Teijin Ltd
Priority to JP8563477A priority Critical patent/JPS5421496A/en
Priority to US05/923,585 priority patent/US4196279A/en
Priority to GB7830172A priority patent/GB2002010B/en
Priority to DE19782831779 priority patent/DE2831779A1/en
Publication of JPS5421496A publication Critical patent/JPS5421496A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To prepare a polyester having a reduced amount of terminal carboxyl groups and a high polymerization degree, by adding specific organoboron compound to the polymerization system.
COPYRIGHT: (C)1979,JPO&Japio
JP8563477A 1977-07-19 1977-07-19 Preparation of polyester having high polymerization degree Pending JPS5421496A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8563477A JPS5421496A (en) 1977-07-19 1977-07-19 Preparation of polyester having high polymerization degree
US05/923,585 US4196279A (en) 1977-07-19 1978-07-11 Process for producing polyesters having a high degree of polymerization
GB7830172A GB2002010B (en) 1977-07-19 1978-07-18 Process for producing polyesters having a high degree of polymerization
DE19782831779 DE2831779A1 (en) 1977-07-19 1978-07-19 PROCESS FOR MANUFACTURING PRACTICAL LINEAR POLYESTER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8563477A JPS5421496A (en) 1977-07-19 1977-07-19 Preparation of polyester having high polymerization degree

Publications (1)

Publication Number Publication Date
JPS5421496A true JPS5421496A (en) 1979-02-17

Family

ID=13864256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8563477A Pending JPS5421496A (en) 1977-07-19 1977-07-19 Preparation of polyester having high polymerization degree

Country Status (1)

Country Link
JP (1) JPS5421496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158452A (en) * 1978-02-28 1979-12-14 Du Pont Composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158452A (en) * 1978-02-28 1979-12-14 Du Pont Composition
JPS5547058B2 (en) * 1978-02-28 1980-11-27

Similar Documents

Publication Publication Date Title
JPS53113032A (en) Immune depresants
JPS5391189A (en) Preparation of d-n-carbamoyl-alpha-amino acids
JPS5225772A (en) Preparation of molecular compound of allantoin and ornithine
JPS5259690A (en) Preparation of water absorbing resin
JPS5421496A (en) Preparation of polyester having high polymerization degree
JPS5350397A (en) Preparation of 4-hydroxycyclopent-2-ene-1-one
JPS5359744A (en) Stablized halogen-containing resin composition
JPS5423132A (en) Analgesic composition
JPS5422326A (en) 3-trimethylsilymethyl-3-butenoic acid and its preparation
JPS5386009A (en) Preparation
JPS5419948A (en) Chalcone compounds
JPS5285283A (en) Preparation of acrylamide polymers
JPS5439492A (en) Preparation of polyester
JPS5419947A (en) Chalcone derivatives
JPS51145594A (en) Preparation of polyester
JPS5382893A (en) Polymer capable of forming complex compound with lewis acid or with organo
JPS52102280A (en) 5,7,8-trimethyltocotrienol-nicotinic acid esters and preparation there of
JPS5297938A (en) Antibiotics dmb and preparation thereof
JPS5312998A (en) Preparation of sulfur-containing polymers
JPS5346937A (en) Preparation of n-p-aminobenzoyl-n,-p-aminourea
JPS51118054A (en) Quantity of electricity detector
JPS53109463A (en) A/d conversion system
JPS5231082A (en) Preparation of 2- piperazinophenylpropionic acid
JPS5343797A (en) Preparation of polyester
JPS537686A (en) 6-oxo-2-piperzinylacetic acid and its preparation