In one instance a semicrystalline polyketone powder useful for additive manufacturing is comprised of a bimodal melt peak determined by an initial differential scanning calorimetry (DSC) scan at 20° C./min and a D.sub.90 particle size of at most 300 micrometers and average particle size of 1 micrometer to 150 micrometers equivalent spherical diameter. In another instance, A composition is comprised of a semicrystalline polyketone powder having a melt peak and a recrystallization peak, wherein the melt peak and recrystallization peak fail to overlap.

In one instance a semicrystalline polyketone powder useful for additive manufacturing is comprised of a bimodal melt peak determined by an initial differential scanning calorimetry (DSC) scan at 20° C./min and a D.sub.90 particle size of at most 300 micrometers and average particle size of 1 micrometer to 150 micrometers equivalent spherical diameter. In another instance, A composition is comprised of a semicrystalline polyketone powder having a melt peak and a recrystallization peak, wherein the melt peak and recrystallization peak fail to overlap.

The present invention relates to a polymer composition having improved processability by containing a polyalkylene carbonate resin and a film using the same.

The present invention relates to a polymer composition having improved processability by containing a polyalkylene carbonate resin and a film using the same.

Disclosed are thermoplastic vulcanizates comprising a plastic phase and a rubber phase and process for preparing such thermoplastic vulcanizates, wherein the plastic phase comprises an aliphatic polyketone and the rubber phase comprises EPDM.

Disclosed are thermoplastic vulcanizates comprising a plastic phase and a rubber phase and process for preparing such thermoplastic vulcanizates, wherein the plastic phase comprises an aliphatic polyketone and the rubber phase comprises EPDM.

This invention relates to a polymerization process for producing a polyketoester, or an olefin-polyketoester utilizing a hydroesterification catalyst and an olefin-CO copolymerization catalyst in a reaction medium. Polyketoester copolymers and olefin-polyketoester copolymers are also disclosed.

This invention relates to a polymerization process for producing a polyketoester, or an olefin-polyketoester utilizing a hydroesterification catalyst and an olefin-CO copolymerization catalyst in a reaction medium. Polyketoester copolymers and olefin-polyketoester copolymers are also disclosed.

The present invention relates to a polymer composition having improved processability by containing a polyalkylene carbonate resin and a film using the same.

The present invention relates to a polymer composition having improved processability by containing a polyalkylene carbonate resin and a film using the same.