JPS559635A - Production of saponified product of ethylene-vinyl acetate compolymer - Google Patents

Production of saponified product of ethylene-vinyl acetate compolymer

Info

Publication number
JPS559635A
JPS559635A JP8197078A JP8197078A JPS559635A JP S559635 A JPS559635 A JP S559635A JP 8197078 A JP8197078 A JP 8197078A JP 8197078 A JP8197078 A JP 8197078A JP S559635 A JPS559635 A JP S559635A
Authority
JP
Japan
Prior art keywords
vinyl acetate
ethylene
copolymer
saponification
production
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
JP8197078A
Other languages
Japanese (ja)
Inventor
Mitsutaka Saito
Shinichi Sato
Nobuo Morishita
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.)
Tosoh Corp
Original Assignee
Toyo Soda Manufacturing 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 Toyo Soda Manufacturing Co Ltd filed Critical Toyo Soda Manufacturing Co Ltd
Priority to JP8197078A priority Critical patent/JPS559635A/en
Publication of JPS559635A publication Critical patent/JPS559635A/en
Pending legal-status Critical Current

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  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE: The saponification of an ethylene-vinyl acetate compolymer is effected in a lower alcohol medium containing a specific aromatic hydrocarbon in the presence of an alkali catalyst, thus effecting uniform saponification even inside the polymer and producing title high-transparency product.
CONSTITUTION: To an ethylene-vinyl acetate copolymer of less than 70 wt% vinyl acetate content and 0.1W500 g/min MI are added a lower alcohol containing 5W50 wt% of a 6W9C aromatic hydrocarbon as benzene or toluene in an amount of 0.5W 10 times the amount of the copolymer and the saponification is effected in the presence of 1W40 wt%, based on the copolymer, of an alkaline catalyst at 40W100° C so that the original shape of the copolymer is kept.
COPYRIGHT: (C)1980,JPO&Japio
JP8197078A 1978-07-07 1978-07-07 Production of saponified product of ethylene-vinyl acetate compolymer Pending JPS559635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8197078A JPS559635A (en) 1978-07-07 1978-07-07 Production of saponified product of ethylene-vinyl acetate compolymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8197078A JPS559635A (en) 1978-07-07 1978-07-07 Production of saponified product of ethylene-vinyl acetate compolymer

Publications (1)

Publication Number Publication Date
JPS559635A true JPS559635A (en) 1980-01-23

Family

ID=13761345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8197078A Pending JPS559635A (en) 1978-07-07 1978-07-07 Production of saponified product of ethylene-vinyl acetate compolymer

Country Status (1)

Country Link
JP (1) JPS559635A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145928A2 (en) * 1983-11-07 1985-06-26 Takeda Chemical Industries, Ltd. Resin from saponified ethylene-vinyl acetate copolymers, production and use thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386347A (en) * 1945-02-13 1945-10-09 Du Pont Interpolymers of ethylene with vinyl esters and products therefrom
US3386978A (en) * 1964-03-30 1968-06-04 Monsanto Res Corp Preparation of hydrolyzed ethylene/vinyl acetate copolymer
US3510463A (en) * 1967-11-20 1970-05-05 Du Pont Suspension alcoholysis of pelleted ethylene/vinyl ester copolymers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386347A (en) * 1945-02-13 1945-10-09 Du Pont Interpolymers of ethylene with vinyl esters and products therefrom
US3386978A (en) * 1964-03-30 1968-06-04 Monsanto Res Corp Preparation of hydrolyzed ethylene/vinyl acetate copolymer
US3510463A (en) * 1967-11-20 1970-05-05 Du Pont Suspension alcoholysis of pelleted ethylene/vinyl ester copolymers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145928A2 (en) * 1983-11-07 1985-06-26 Takeda Chemical Industries, Ltd. Resin from saponified ethylene-vinyl acetate copolymers, production and use thereof

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