JPS56120707A - Preparation of particulate polyvinyl alcohol - Google Patents
Preparation of particulate polyvinyl alcoholInfo
- Publication number
- JPS56120707A JPS56120707A JP2555680A JP2555680A JPS56120707A JP S56120707 A JPS56120707 A JP S56120707A JP 2555680 A JP2555680 A JP 2555680A JP 2555680 A JP2555680 A JP 2555680A JP S56120707 A JPS56120707 A JP S56120707A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- nonsolvent
- alcohol
- particle diameter
- mixed solvent
- 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 make the particle diameter of PVA into a particle diameter with improved water dispersion, by dispersing a polyvinyl ester solution using a mixed solvent obtained by blending specific amounts of an alcohol and a given hydrocarbon as solvents into a liquid of a nonsolvent in particular state, followed by saponification.
CONSTITUTION: A polyvinyl ester is dissolved in a mixed solvent consisting of (A) 100pts.wt. alcohol or alcohol and methyl acetate and (B) 10W200pts.wt. 5W10C hydrocarbon (hexene, etc.). The prepared solution of the polyvinyl ester in the mixed solvent is dispersed into a nonsolvent liquid, e.g., liquid paraffin, etc. in a particle state and saponified. The nonsolvent liquid has to be almost immiscible with the solvent A and a liquid having a higher viscosity than that of the solvent B. In spite of the enlarged particle diameter, practically no nonsolvent liquid is contained in the particles.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2555680A JPS56120707A (en) | 1980-02-29 | 1980-02-29 | Preparation of particulate polyvinyl alcohol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2555680A JPS56120707A (en) | 1980-02-29 | 1980-02-29 | Preparation of particulate polyvinyl alcohol |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56120707A true JPS56120707A (en) | 1981-09-22 |
JPS6315921B2 JPS6315921B2 (en) | 1988-04-06 |
Family
ID=12169217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2555680A Granted JPS56120707A (en) | 1980-02-29 | 1980-02-29 | Preparation of particulate polyvinyl alcohol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56120707A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1231221A1 (en) * | 2001-02-08 | 2002-08-14 | Wacker Polymer Systems GmbH & Co. KG | Process for the preparation of polyvinyl alcohol |
WO2007004484A1 (en) | 2005-07-01 | 2007-01-11 | The Nippon Synthetic Chemical Industry Co., Ltd. | Pva particle for use in temporary embolization of blood vessel, process for production thereof, and temporary embolizing agent for blood vessel |
JP2007037989A (en) * | 2005-07-01 | 2007-02-15 | Nippon Synthetic Chem Ind Co Ltd:The | Pva particle for blood vessel-temporarily embolizing agent, method for producing the same, and blood vessel-temporarily embolizing agent |
WO2010150715A1 (en) | 2009-06-26 | 2010-12-29 | 日本合成化学工業株式会社 | Nonhuman animal model of myocardial infarction and method for constructing same |
WO2023171666A1 (en) * | 2022-03-07 | 2023-09-14 | 積水化学工業株式会社 | Modified polyvinyl alcohol resin |
-
1980
- 1980-02-29 JP JP2555680A patent/JPS56120707A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1231221A1 (en) * | 2001-02-08 | 2002-08-14 | Wacker Polymer Systems GmbH & Co. KG | Process for the preparation of polyvinyl alcohol |
WO2007004484A1 (en) | 2005-07-01 | 2007-01-11 | The Nippon Synthetic Chemical Industry Co., Ltd. | Pva particle for use in temporary embolization of blood vessel, process for production thereof, and temporary embolizing agent for blood vessel |
JP2007037989A (en) * | 2005-07-01 | 2007-02-15 | Nippon Synthetic Chem Ind Co Ltd:The | Pva particle for blood vessel-temporarily embolizing agent, method for producing the same, and blood vessel-temporarily embolizing agent |
EP1900381A4 (en) * | 2005-07-01 | 2012-01-11 | Nippon Synthetic Chem Ind | Pva particle for use in temporary embolization of blood vessel, process for production thereof, and temporary embolizing agent for blood vessel |
US8361454B2 (en) | 2005-07-01 | 2013-01-29 | The Nippon Synthetic Chemical Industry Co., Ltd. | PVA particle for temporary embolic material and production process thereof, and temporary embolic material |
WO2010150715A1 (en) | 2009-06-26 | 2010-12-29 | 日本合成化学工業株式会社 | Nonhuman animal model of myocardial infarction and method for constructing same |
WO2023171666A1 (en) * | 2022-03-07 | 2023-09-14 | 積水化学工業株式会社 | Modified polyvinyl alcohol resin |
Also Published As
Publication number | Publication date |
---|---|
JPS6315921B2 (en) | 1988-04-06 |
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