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 disclosure provides embodiments of a tetrapolymer composition. In embodiments, the tetrapolymer composition may have the formula E/P/X/CO, which may include from 25 wt. % to 90 wt. % of ethylene (E), from 0.1 wt. % to 5.0 wt. % of propylene (P), from 5 wt. % to 40 wt. % of alkyl acrylate (X), and from 3 wt. % to 30 wt. % of carbon monoxide (CO). X may be selected from the group consisting of vinyl acetate or n-butyl acrylate. The tetrapolymer composition may have a melt index, I2, from 10 to 1,000 g/10 min when measured according to ASTM 1238 at 2.16 kg and 190 C. Additionally, the present disclosure provides embodiments of a polymer formulation comprising the tetrapolymer composition and polyvinyl chloride.

The present disclosure provides embodiments of a tetrapolymer composition. In embodiments, the tetrapolymer composition may have the formula E/P/X/CO, which may include from 25 wt. % to 90 wt. % of ethylene (E), from 0.1 wt. % to 5.0 wt. % of propylene (P), from 5 wt. % to 40 wt. % of alkyl acrylate (X), and from 3 wt. % to 30 wt. % of carbon monoxide (CO). X may be selected from the group consisting of vinyl acetate or n-butyl acrylate. The tetrapolymer composition may have a melt index, I2, from 10 to 1,000 g/10 min when measured according to ASTM 1238 at 2.16 kg and 190 C. Additionally, the present disclosure provides embodiments of a polymer formulation comprising the tetrapolymer composition and polyvinyl chloride.

The present disclosure provides embodiments of a tetrapolymer composition. In embodiments, the tetrapolymer composition may have the formula E/P/X/CO, which may include from 25 wt. % to 90 wt. % of ethylene (E), from 0.1 wt. % to 5.0 wt. % of propylene (P), from 5 wt. % to 40 wt. % of alkyl acrylate (X), and from 3 wt. % to 30 wt. % of carbon monoxide (CO). X may be selected from the group consisting of vinyl acetate or n-butyl acrylate. The tetrapolymer composition may have a melt index, I2, from 10 to 1,000 g/10 min when measured according to ASTM 1238 at 2.16 kg and 190 C. Additionally, the present disclosure provides embodiments of a polymer formulation comprising the tetrapolymer composition and polyvinyl chloride.

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.