POLYOLEFIN DISPERSION TECHNOLOGY USED FOR RESIN COATED SAND

PROBLEM TO BE SOLVED: To provide a polymer-coated particulate material which has both good wear resistance and good appearance, and is homogeneously coated with a polymer material, and to provide a method for forming the same.SOLUTION: The polymer-coated particulate material is formed by the steps o...

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Hauptverfasser:	CHEREAU LOIC F, DAMEN JULIEN H J M, THOMAS ALLGEUER
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a polymer-coated particulate material which has both good wear resistance and good appearance, and is homogeneously coated with a polymer material, and to provide a method for forming the same.SOLUTION: The polymer-coated particulate material is formed by the steps of: preparing an aqueous dispersion obtained by melting and mixing a mixture which contains a dispersion medium that contains a thermoplastic polymer, water and an organic solvent as needed, and a polar dispersion stabilizing polymer that is different from the thermoplastic polymer; then pre-heating a granular material that becomes a base material; mixing and agitating the granular material and the aqueous dispersion; evaporating and removing a portion of the dispersion medium; and further cooling the resultant mixture. The method for forming the same is also disclosed.