MAGNESIUM HYDROXIDE

PROBLEM TO BE SOLVED: To provide magnesium hydroxide which can be formulated with a thermoplastic polymer to impart sufficient flame retardancy thereto without causing a discoloration problem. SOLUTION: The magnesium hydroxide has a calcium content of 1/100 or smaller and a content of a metallic ele...

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Bibliographische Detailangaben
1. Verfasser:	TAKEMURA KAZUKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide magnesium hydroxide which can be formulated with a thermoplastic polymer to impart sufficient flame retardancy thereto without causing a discoloration problem. SOLUTION: The magnesium hydroxide has a calcium content of 1/100 or smaller and a content of a metallic element of group 14 in the periodic table of 0.2/100 to 20/100, the contents being expressed in terms of a numerical ratio of the related atoms to the magnesium atoms, a BET specific surface area of 100 m2/g or larger as measured by nitrogen adsorption. This is produced by dissolving a magnesium compound in water and hydrolyzing the compound in the presence of an element of group 14 in the periodic table. A flame-retardant polymer composition prepared by formulating a synthetic polymer with the magnesium hydroxide exhibits sufficient flame retardancy and does not discolor even when heated. COPYRIGHT: (C)2005,JPO&NCIPI