JPS6474201A - Manufacture of acetalized ethylene/vinyl alcohol copolymer - Google Patents

Manufacture of acetalized ethylene/vinyl alcohol copolymer

Info

Publication number
JPS6474201A
JPS6474201A JP22884287A JP22884287A JPS6474201A JP S6474201 A JPS6474201 A JP S6474201A JP 22884287 A JP22884287 A JP 22884287A JP 22884287 A JP22884287 A JP 22884287A JP S6474201 A JPS6474201 A JP S6474201A
Authority
JP
Japan
Prior art keywords
vinyl alcohol
ethylene
alcohol copolymer
acetalized
acetalization
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
JP22884287A
Other languages
Japanese (ja)
Inventor
Kiyoshi Yonezu
Akemasa Aoyama
Makio Tokoo
Takuji Okaya
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.)
Kuraray Co Ltd
Original Assignee
Kuraray 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 Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP22884287A priority Critical patent/JPS6474201A/en
Publication of JPS6474201A publication Critical patent/JPS6474201A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To produce the title acetalized copolymer which is improved in thermoformability and can be melt-molded, by dissolving homogeneously an ethylene/vinyl alcohol copolymer in a solvent to a prescribed concentration or below, and adding an aldehyde thereto to cause acetalization. CONSTITUTION:An ethylene/vinyl alcohol copolymer (hereinafter abbreviated to EVOH) having an ethylene content of 20-60mol.% is homogeneously dissolved in a solvent (e.g., an alcohol/water mixed solvent so that the concentration may be 40wt.% or below. then, an aldehyde (e.g., formalin) is added to the solution, and acetalization is carried out to give acetalized EVOH wherein the degree of acetalization is 1-15mol.%. This EVOH can be melt-molded to produce easily films, sheets, bottles, and the like which are suitable, for example, for packaging of foods.
JP22884287A 1987-09-11 1987-09-11 Manufacture of acetalized ethylene/vinyl alcohol copolymer Pending JPS6474201A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22884287A JPS6474201A (en) 1987-09-11 1987-09-11 Manufacture of acetalized ethylene/vinyl alcohol copolymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22884287A JPS6474201A (en) 1987-09-11 1987-09-11 Manufacture of acetalized ethylene/vinyl alcohol copolymer

Publications (1)

Publication Number Publication Date
JPS6474201A true JPS6474201A (en) 1989-03-20

Family

ID=16882718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22884287A Pending JPS6474201A (en) 1987-09-11 1987-09-11 Manufacture of acetalized ethylene/vinyl alcohol copolymer

Country Status (1)

Country Link
JP (1) JPS6474201A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003051989A1 (en) * 2001-12-17 2003-06-26 Ivan Vasilev Georgiev Polymer composition and a method for producing packing materials with controllable decomposition
CN105579525A (en) * 2013-10-02 2016-05-11 株式会社可乐丽 Resin composition, resin molded body, and multi-layer structure
US20220184930A1 (en) * 2019-03-28 2022-06-16 Kuraray Co., Ltd. Modified vinyl acetal resin for interlayer film of laminated glass
WO2022220086A1 (en) 2021-04-12 2022-10-20 株式会社クラレ Method for producing product of acetalization of ethylene/vinyl alcohol copolymer
JPWO2022220085A1 (en) * 2021-04-12 2022-10-20

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003051989A1 (en) * 2001-12-17 2003-06-26 Ivan Vasilev Georgiev Polymer composition and a method for producing packing materials with controllable decomposition
CN105579525A (en) * 2013-10-02 2016-05-11 株式会社可乐丽 Resin composition, resin molded body, and multi-layer structure
CN105579525B (en) * 2013-10-02 2018-05-04 株式会社可乐丽 Resin combination, resin-formed body and multilayer structure making
US20220184930A1 (en) * 2019-03-28 2022-06-16 Kuraray Co., Ltd. Modified vinyl acetal resin for interlayer film of laminated glass
WO2022220086A1 (en) 2021-04-12 2022-10-20 株式会社クラレ Method for producing product of acetalization of ethylene/vinyl alcohol copolymer
JPWO2022220085A1 (en) * 2021-04-12 2022-10-20
WO2022220085A1 (en) * 2021-04-12 2022-10-20 株式会社クラレ Product of acetalization of ethylene/vinyl alcohol copolymer and composition containing said acetalization product
KR20230170681A (en) 2021-04-12 2023-12-19 주식회사 쿠라레 Method for producing acetalized product of ethylene vinyl alcohol copolymer

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