Process for forming a powder

The present disclosure provides a process. The process includes (i) melt blending, in an extruder, (a) a polyolefin phase and (b) an aqueous phase in the presence of (c) at least one dispersant selected from an acrylic dispersant, a poloxamer dispersant, and combinations thereof; (ii) producing an i...

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Bibliographische Detailangaben
Hauptverfasser:	Moglia, Robert, Tomczak, Thomas, Dermody, Daniel, Singh, Harpreet, Biswas, Sanjib, Sekharan, Manesh, McCulloch, Bryan, Gorin, Craig
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G 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 THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	The present disclosure provides a process. The process includes (i) melt blending, in an extruder, (a) a polyolefin phase and (b) an aqueous phase in the presence of (c) at least one dispersant selected from an acrylic dispersant, a poloxamer dispersant, and combinations thereof; (ii) producing an interfacial tension from 0.1 dynes/cm to 25 dynes/cm; (iii) forming a polyolefin aqueous dispersion having from 25 wt% to 90 wt% solids content of dispersion; and (iv) removing the water from the polyolefin aqueous dispersion to form a powder. The powder has a mean volume average particle size from 10 μm to 300 μm, a sphericity from 0.92 to 1.0, a particle size distribution from 1 to less than 2, and a particle density from 98% to 100%.