POLYVINYL ALCOHOL POWDER AND METHOD FOR PRODUCING SAME

The present invention is characterized by being a polyvinyl alcohol powder having an average particle diameter of 100 to 2000 µm as measured by optical microscopic observation at a humidity of 65%RH and a temperature of 25°C, having a bulk specific gravity (g/ml) of a portion ranging from 500 to 100...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	TANAKA, KAZUYUKI, FUNAKOSHI, JUNJI, HORIGUCHI, JUNPEI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The present invention is characterized by being a polyvinyl alcohol powder having an average particle diameter of 100 to 2000 µm as measured by optical microscopic observation at a humidity of 65%RH and a temperature of 25°C, having a bulk specific gravity (g/ml) of a portion ranging from 500 to 1000 µm in particle diameter of more than 0.60 and less than 0.80, and having a content of the portion ranging from 500 to 1000 µm in particle diameter of 35 to 70% by mass. Accordingly, a polyvinyl alcohol powder is provided, that is good in anti-scattering property, superior in solubility in preparing an aqueous solution from the powder, and capable of reducing transport costs due to its large specific gravity.