JPS5594911A - Preparation of polyvinyl acetal - Google Patents

Preparation of polyvinyl acetal

Info

Publication number
JPS5594911A
JPS5594911A JP259879A JP259879A JPS5594911A JP S5594911 A JPS5594911 A JP S5594911A JP 259879 A JP259879 A JP 259879A JP 259879 A JP259879 A JP 259879A JP S5594911 A JPS5594911 A JP S5594911A
Authority
JP
Japan
Prior art keywords
polyvinyl acetal
resin
carboxyl group
suspended
subjected
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
JP259879A
Other languages
Japanese (ja)
Inventor
Hiroshi Ogawara
Shigeru Nomura
Masato Azuma
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP259879A priority Critical patent/JPS5594911A/en
Publication of JPS5594911A publication Critical patent/JPS5594911A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To obtain a title resin useful as an intermediate coating of safety glass by a method wherein polyvinyl acetal resin having carboxyl group in molecular chain is suspended in an alkaline aqueous medium and subjected to neutralization treatment to improve moldability.
CONSTITUTION: Polyvinyl acetal resin having carboxyl group in molecular chain is suspended in an alkaline aqueous medium and subjected to neutralization treatment to prepare polyvinyl acetal. Herein, as polyvinyl acetal resin, polyvinyl butyral resin is preferably used and its acetal degree is preferably about 55W70mol% and its polymerization degree is preferably about 800W2600. A carboxyl group content of polyvinyl acetal is preferably 0.3W15mol%.
COPYRIGHT: (C)1980,JPO&Japio
JP259879A 1979-01-11 1979-01-11 Preparation of polyvinyl acetal Pending JPS5594911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP259879A JPS5594911A (en) 1979-01-11 1979-01-11 Preparation of polyvinyl acetal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP259879A JPS5594911A (en) 1979-01-11 1979-01-11 Preparation of polyvinyl acetal

Publications (1)

Publication Number Publication Date
JPS5594911A true JPS5594911A (en) 1980-07-18

Family

ID=11533815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP259879A Pending JPS5594911A (en) 1979-01-11 1979-01-11 Preparation of polyvinyl acetal

Country Status (1)

Country Link
JP (1) JPS5594911A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012241043A (en) * 2011-05-16 2012-12-10 Sekisui Chem Co Ltd Modified polyvinyl acetal resin, and composite resin composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012241043A (en) * 2011-05-16 2012-12-10 Sekisui Chem Co Ltd Modified polyvinyl acetal resin, and composite resin composition

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