JPS5670002A - Preparation of polyvinyl acetal - Google Patents
Preparation of polyvinyl acetalInfo
- Publication number
- JPS5670002A JPS5670002A JP14562479A JP14562479A JPS5670002A JP S5670002 A JPS5670002 A JP S5670002A JP 14562479 A JP14562479 A JP 14562479A JP 14562479 A JP14562479 A JP 14562479A JP S5670002 A JPS5670002 A JP S5670002A
- Authority
- JP
- Japan
- Prior art keywords
- polyvinyl alcohol
- polymer
- aldehyde
- interlayer
- glass plate
- 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.)
- Granted
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To prepare the titled polymer having remarkably improved autohesive property, and useful as an interlayer of glass plate, by acetalizing polyvinyl alcohol with an aldehyde, and after equilibrium is reached, adding a specific amount of a polyhydric alcohol to the reaction mixture.
CONSTITUTION: Acetalization reaction of polyvinyl alcohol (A) is carried out by (1) adding concentrated hydrochloric acid to an aqueous solution of polyvinyl alcohol, and (2) adding an aldehyde (B), e.g. butyraldehyde, to the mixture. When the reaction system comes to nearly equilibrium state, ≥0.5pt.wt., based on 100pts.wt. of the component (A), of a polyhydric alcohol (C), e.g. trimethylene glycol, is added to the reaction mixture. After reacting for 1hr, the resin is neutralized and washed with water to obtain the objective polymer as white powder. The polymer is mixed with a plasticizer, milled with mill rolls, and pressed under heating and compression to obtain an interlayer of glass plate.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14562479A JPS6056167B2 (en) | 1979-11-09 | 1979-11-09 | Method for producing polyvinyl acetal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14562479A JPS6056167B2 (en) | 1979-11-09 | 1979-11-09 | Method for producing polyvinyl acetal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5670002A true JPS5670002A (en) | 1981-06-11 |
| JPS6056167B2 JPS6056167B2 (en) | 1985-12-09 |
Family
ID=15389308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14562479A Expired JPS6056167B2 (en) | 1979-11-09 | 1979-11-09 | Method for producing polyvinyl acetal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6056167B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010538132A (en) * | 2007-09-05 | 2010-12-09 | クラレイ ユーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Process for the production of polyvinyl acetal with low residual aldehyde content in wastewater |
| CN108299578A (en) * | 2018-01-26 | 2018-07-20 | 内蒙古双欣环保材料股份有限公司 | A kind of high acetalizing degree polyvinyl butyral resin and preparation method thereof |
-
1979
- 1979-11-09 JP JP14562479A patent/JPS6056167B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010538132A (en) * | 2007-09-05 | 2010-12-09 | クラレイ ユーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Process for the production of polyvinyl acetal with low residual aldehyde content in wastewater |
| CN108299578A (en) * | 2018-01-26 | 2018-07-20 | 内蒙古双欣环保材料股份有限公司 | A kind of high acetalizing degree polyvinyl butyral resin and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6056167B2 (en) | 1985-12-09 |
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