Abstract: The invention concerns a method for producing a population of particles of a polymer, wherein the polymer is polyvinylidene difluoride (=PVDF) or a copolymer comprising polyvinylidene difluoride, wherein the polymer is dissolved in an organic solvent, wherein molecules of the solvent comprise or consist of 3 to 22 carbon atoms, one or more oxygen atom(s) as heteroatom(s) and at most one carbocyclic or heterocyclic residue comprising carbon atoms which carbocyclic or heterocyclic residue is an aromatic residue, wherein the carbon atoms in the carbocyclic or heterocyclic residue are carbon atoms taken from said 3 to 22 carbon atoms, wherein the one or more oxygen atom(s) is/are part of at least one carboxylic acid ester group or carbonyl group, wherein the carbon atom in the carboxylic acid ester group and the carbonyl group is one of said 3 to 22 carbon atoms or/and at least one ether group and at most three hydroxyl groups, wherein in case of presence of at least one hydroxyl group the number of ether groups

Abstract: The invention concerns a method for producing a population of particles of a polymer, wherein the polymer is poly-butylene terephthalate (=PBT) or polyethylene terephthalate (=PET) or a copolymer comprising polybutylene terephthalate and/or polyethylene terephthalate, wherein the polymer is dissolved in an organic solvent which solvent is selected such that it completely solubilizes the polymer only at a temperature of the solvent above 100° C., wherein the method comprises heating the solvent and the solid polymer immersed in the solvent at least to a first temperature, at which first temperature the polymer completely dissolves, cooling the solution until a second temperature is reached at which second temperature clouding of the solution starts, further cooling the solution at a rate in a range of 0.05 ° C./min to 5° C./min or keeping the solution at the second temperature or at a temperature up to 3° C.

Abstract: The invention concerns a method for producing a population of particles of a polymer, wherein the polymer is polyvinylidene difluoride (=PVDF) or a copolymer comprising polyvinylidene difluoride, wherein the polymer is dissolved in an organic solvent, wherein molecules of the solvent comprise or consist of 3 to 22 carbon atoms, one or more oxygen atom(s) as heteroatom(s) and at most one carbocyclic or heterocyclic residue comprising carbon atoms which carbocyclic or heterocyclic residue is an aromatic residue, wherein the carbon atoms in the carbocyclic or heterocyclic residue are carbon atoms taken from said 3 to 22 carbon atoms, wherein the one or more oxygen atom(s) is/are part of at least one carboxylic acid ester group or carbonyl group, wherein the carbon atom in the carboxylic acid ester group and the carbonyl group is one of said 3 to 22 carbon atoms or/and at least one ether group and at most three hydroxyl groups, wherein in case of presence of at least one hydroxyl group the number of ether groups

Abstract: The invention concerns a method for producing a population of particles of a polymer, wherein the polymer is poly-butylene terephthalate (=PBT) or polyethylene terephthalate (=PET) or a copolymer comprising polybutylene terephthalate and/or polyethylene terephthalate, wherein the polymer is dissolved in an organic solvent which solvent is selected such that it completely solubilizes the polymer only at a temperature of the solvent above 100° C., wherein the method comprises heating the solvent and the solid polymer immersed in the solvent at least to a first temperature, at which first temperature the polymer completely dissolves, cooling the solution until a second temperature is reached at which second temperature clouding of the solution starts, further cooling the solution at a rate in a range of 0.05 ° C./min to 5° C./min or keeping the solution at the second temperature or at a temperature up to 3° C.