Polyketone powder for laser sintering
AssigneeJabil Inc.
InventorsThomas Fry, John G. Eue, Steven Kubiak, Zachary Peterson, Nicholas John Dippel, Mathew Artin Torosian
Life of this patent
Estimating the term…
Abstract
A semicrystalline poly ketone powder useful for additive manufacturing may be made by dissolving a polyketone having differential scanning calorimetry (DSC) monomodal melt peak, at a temperature above 50° C. to below the melt temperature of the polyketone, precipitating the dissolved polyketone by cooling, addition of a nonsolvent or combination thereof. The method may be used to form polyketones having a DSC melt peak with an enthalpy greater than the starting polyketone.
Claims28
A composition comprising a semicrystalline aliphatic polyketone powder that has a melt peak having a melt peak enthalpy of at least 50 joules/gram as determined by differential scanning calorimetry (DSC) using a heating rate of 10° C./min.
(canceled)
(canceled)
A method for forming an aliphatic polyketone powder useful for making an additive manufactured article comprising;
- (i) dissolving an initial aliphatic polyketone having an onset melt temperature in a solvent above 50° C. to below the onset melt temperature of the initial aliphatic polyketone to form a solution comprised of a dissolved aliphatic polyketone,
- (ii) precipitating the dissolved aliphatic polyketone by cooling the solution, adding a non-solvent to the solution or combination thereof to form the semicrystalline aliphatic polyketone powder, and
- (iii) separating the semicrystalline aliphatic polyketone powder from the solvent.
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
Dependencies are inferred from the claim text.