JPS56120707A - Preparation of particulate polyvinyl alcohol - Google Patents

Preparation of particulate polyvinyl alcohol

Info

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
Application number
JP2555680A
Other languages
Japanese (ja)
Other versions
JPS6315921B2 (en
Inventor
Tsukasa Oishi
Yoshio Ebina
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.)
Nippon Synthetic Chemical Industry Co Ltd
Original Assignee
Nippon Synthetic Chemical Industry 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 Nippon Synthetic Chemical Industry Co Ltd filed Critical Nippon Synthetic Chemical Industry Co Ltd
Priority to JP2555680A priority Critical patent/JPS56120707A/en
Publication of JPS56120707A publication Critical patent/JPS56120707A/en
Publication of JPS6315921B2 publication Critical patent/JPS6315921B2/ja
Granted legal-status Critical Current

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  • 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
JP2555680A 1980-02-29 1980-02-29 Preparation of particulate polyvinyl alcohol Granted JPS56120707A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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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