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US 10,377,846 B2Granted
Processes for increasing density of polymer flakes and powders
AssigneeArkema Inc.
InventorsTimothy A. Spahr, Angelo Pedicini
Life of this patent
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Abstract
The present disclosure is directed to improved poly(arylene ether ketone) powders for use in laser sintering, powder coating, compression molding, or transfer molding.
Claims17
A method comprising:
- comminuting a compacted sheet, the compacted sheet formed by compacting a first poly(arylene ether ketone) (PAEK) powder or a first mixture of PAEK powders, then subjecting said compacted sheet to comminution to form a second PAEK powder or second mixture of PAEK powders;
- wherein the second PAEK powder or second mixture of PAEK powders has a median particle diameter of between about 10 microns and about 2000 microns and a bulk density that is at least 9% greater, as compared to an uncompacted PAEK powder or mixture of PAEK powders having a median particle diameter of between about 10 microns and about 2000 microns.
Dependencies are inferred from the claim text.