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US 10,882,215 B2Granted
Processes for producing polymer powders
AssigneeArkema Inc.
InventorsAngelo Pedicini, Bruce Clay, Benoit Brule
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.
Claims18
A method comprising
- heating polyetherketoneketone (hereinafter “PEKK”) pellets to a temperature of between 160° C. and 300° C., for a time sufficient to produce semicrystalline PEKK pellets having a crystallinity of at least 10%;
- grinding the semicrystalline PEKK pellets to produce a PEKK powder having a median particle diameter of between about 10 microns and about 150 microns;
- and
- heating the PEKK powder to a temperature of about 275° C. to about 290° C., to produce a heat-treated PEKK powder.
1 more element
Dependencies are inferred from the claim text.