Patent ID: 11858173
Assignee: ARKEMA INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method for heat treating a powder of a semi-crystalline or crystallizable polymer comprising polyaryletherketone (PAEK), the method comprising:
heating untreated powder of said semi-crystalline or crystallizable polymer comprising PAEK contained within an interior region of a vessel to a temperature that is less than the melting temperature of a highest melting crystalline form of the polymer; and
simultaneously for at least a first period of time during the heating step, moving the vessel to cause the untreated powder of said semi-crystalline or crystallizable polymer comprising PAEK within the vessel to move with respect to the vessel,
optionally heating and moving the vessel for a second period of time,
to produce a heat-treated powder comprising PAEK.