Abstract: The invention relates to a method for the combined processing of at least two polymer melts selected from the group consisting of (M1), (M2) and (M3), wherein (M1) is a polymer melt comprising a terephthalate polyester (A1), (M2) is a polymer melt comprising a copolyester (A2) on the basis of terephthalic acid, at least one aliphatic, ?-dicarboxylic acid and at least one aliphatic 1,?-diol, and (M3) is a polymer melt 0 comprising a copolyester (A3) on the basis of terephthalic acid, at least one polytetramethylene glycol and at least one aliphatic 1,?-diol. The method comprises the alternating processing of the at least two polymer melts into at least one product selected from the group consisting of pellets (P1), fibers (P2), expanded particles (P3), preforms (P4) and articles (P5).

Abstract: The present invention relates to a method for the combined production of at least two target products selected from the group consisting of (T1), (T2) and (T3), wherein (T1) is a terephthalate polyester, (T2) is a copolyester on the basis of terephthalic acid, at least one aliphatic 1,?-dicarboxylic acid and at least one aliphatic 1,?-diol, and (T3) is a copolyester on the basis of terephthalic acid, polytetramethylene glycoland at least one aliphatic 1,?-diol.

Abstract: The present invention relates to a method of forming a polyarylene ether sulfone polymer by converting a reaction mixture (RG) comprising a dihalogen component (A1), a dihydroxy component (B1) and potassium carbonate (C1) having a volume-average particle size of <25 ?m. The present invention further relates to the polyarylene ether sulfone polymers obtainable by said method, to products obtainable from said polyarylene ether sulfone polymer and to membranes formed from said polyarylene ether sulfone polymer.

Abstract: The present invention relates to a method of forming a polyarylene ether sulfone polymer by converting a reaction mixture (RG) comprising a dihalogen component (A1), a dihydroxy component (B1) and potassium carbonate (C1) having a volume-average particle size of <25 ?m. The present invention further relates to the polyarylene ether sulfone polymers obtainable by said method, to products obtainable from said polyarylene ether sulfone polymer and to membranes formed from said polyarylene ether sulfone polymer.

Abstract: The invention relates to a method for preparing polyarylethersulfone-polyalkylene oxide block copolymers (PPC) comprising the polycondensation of a reaction mixture (RG) comprising the components: (A1) at least one aromatic dihalogen compound, (B1) at least one aromatic dihydroxyl compound, (B2) at least one polyalkylene oxide having at least two hydroxyl groups, (C) at least one aprotic polar solvent and (D) at least one metal carbonate, where the reaction mixture (RG) does not comprise any substance which forms an azeotrope with water.

Abstract: Block copolymer comprising polyarylene ether blocks and polyalkylene oxide blocks, wherein said block copolymer comprises at least two polyalkylene oxide blocks that are endcapped with different endcapping groups.

Abstract: The present invention relates to a method of forming a polyarylene ether sulfone polymer by converting a reaction mixture (RG) comprising a dihalogen component (A1), a dihydroxy component (B1) and potassium carbonate (C1) having a volume-average particle size of <25 ?m. The present invention further relates to the polyarylene ether sulfone polymers obtainable by said method, to products obtainable from said polyarylene ether sulfone polymer and to membranes formed from said polyarylene ether sulfone polymer.

Abstract: The present invention relates to a process for drying particulate polymers, comprising the steps of: a) providing a particulate polymer comprising from 60 wt % to 90 wt % of at least one solvent based on the total weight of particulate polymer and solvent, b) mechanically predrying the particulate polymer to a content of the at least one solvent of from 20 wt % to 50 wt % based on the total weight of particulate polymer and solvent, wherein the mechanical predrying in step b) is carried out with a roller press, and c) end-drying the particulate polymer to a content of the at least one solvent of from 0 wt % to 15 wt % based on the total weight of particulate polymer and solvent, wherein the particulate polymer is a polymer comprising repeating units of formulae I, II and/or III The present invention further relates to a process for working up particulate polymers.

Abstract: Process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of i) dividing the polyarylene ether solution into droplets, ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which (A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0° C. to Tc, where the critical temperature Tc in [° C.] can be determined by the numerical equation Tc=(77?c)/0.58 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and (C) has component (1) in concentrations of 5% by weight to cc, where the critical concentration cc in [% by weight] can be determined by the numerical equation cc=77?0.58*T in which T is the temperature in the precipitation bath in [° C.], where the percentages by weight are each based on the sum of the percentages by weight of component (1) and of component (2) in the precipitation bath.

Abstract: The invention relates to a method for preparing polyarylethersulfone-polyalkylene oxide block copolymers (PPC) comprising the polycondensation of a reaction mixture (RG) comprising the components: (A1) at least one aromatic dihalogen compound, (B1) at least one aromatic dihydroxyl compound, (B2) at least one polyalkylene oxide having at least two hydroxyl groups, (C) at least one aprotic polar solvent and (D) at least one metal carbonate, where the reaction mixture (RG) does not comprise any substance which forms an azeotrope with water.

Abstract: The invention relates to a process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of i) dividing the polyarylene ether solution in a division apparatus which is made to vibrate with a frequency of 10 to 1400 Hz to obtain droplets, ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which (A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0° C. to Tc, where the critical temperature Tc in [° C.] can be determined by the numerical equation Tc=(77?c)/0.58 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and (C) has component (1) in concentrations of 5% by weight to cc, where the critical concentration cc in [% by weight] can be determined by the numerical equation cc=77?0.58*T in which T is the temperature in the precipitation bath in [° C.

Abstract: Process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of i) dividing the polyarylene ether solution into droplets, ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which (A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0° C. to Tc, where the critical temperature Tc in [° C.] can be determined by the numerical equation Tc=(99?c)/0.61 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and (C) has component (1) in concentrations of 5% by weight to cc, where the critical concentration cc in [% by weight] can be determined by the numerical equation cc=99?0.61*T in which T is the temperature in the precipitation bath in [° C.], where the percentages by weight are each based on the sum of the percentages by weight of component (1) and of component (2) in the precipitation bath.

Abstract: The present invention relates to a process for the production of a polyaryl ether sulfone polymer (P), comprising the following steps: (I) provision of a solution (PL) which comprises the polyaryl ether sulfone polymer (P) and comprises an aprotic polar solvent (L), (II) separation of the solution (PL) into droplets, (III) transfer of the droplets into a precipitation bath (F) which comprises water, with the result that the polyaryl ether sulfone polymer (P) is obtained in the form of particles, and (IV) isolation of the polyaryl ether sulfone polymer (P) where the temperature of the solution (PL) in step (II) is in the range from 50 to <80° C.

Abstract: The invention relates to a method for preparing polyarylethersulfone-polyalkylene oxide block copolymers (PPC) comprising the polycondensation of a reaction mixture (RG) comprising the components: (A1) at least one aromatic dihalogen compound, (B1) at least one aromatic dihydroxyl compound, (B2) at least one polyalkylene oxide having at least two hydroxyl groups, (C) at least one aprotic polar solvent and (D) at least one metal carbonate, where the reaction mixture (RG) does not comprise any substance which forms an azeotrope with water.

Abstract: The present invention relates to a process for drying particulate polymers, comprising the steps of: a) providing a particulate polymer comprising from 60 wt % to 90 wt % of at least one solvent based on the total weight of particulate polymer and solvent, b) mechanically predrying the particulate polymer to a content of the at least one solvent of from 20 wt % to 50 wt % based on the total weight of particulate polymer and solvent, wherein the mechanical predrying in step b) is carried out with a roller press, and c) end-drying the particulate polymer to a content of the at least one solvent of from 0 wt % to 15 wt % based on the total weight of particulate polymer and solvent, wherein the particulate polymer is a polymer comprising repeating units of formulae I, II and/or III The present invention further relates to a process for working up particulate polymers.

Abstract: The present invention relates to a process for the production of low-halogen-content polybiphenyl sulfone polymers, to the resultant polybiphenyl sulfone polymers, to polybiphenyl sulfone polymers having less than 400 ppm content of polymer-bonded halogen, to thermoplastic molding compositions comprising these polybiphenyl sulfone polymers, and to their use for the production of moldings, of fibers, of films, of membranes, or of foams.

Abstract: The present invention relates to a method of forming a polyarylene ether sulfone polymer by converting a reaction mixture (RG) comprising a dihalogen component (A1), a dihydroxy component (B1) and potassium carbonate (C1) having a volume-average particle size of <25 ?m. The present invention further relates to the polyarylene ether sulfone polymers obtainable by said method, to products obtainable from said polyarylene ether sulfone polymer and to membranes formed from said polyarylene ether sulfone polymer.

Abstract: Process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of i) dividing the polyarylene ether solution into droplets, ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which (A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0° C. to Tc, where the critical temperature Tc in [° C.] can be determined by the numerical equation Tc=(99?c)/0.61 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and (C) has component (1) in concentrations of 5% by weight to cc, where the critical concentration cc in [% by weight] can be determined by the numerical equation cc=99?0.

Abstract: Process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of i) dividing the polyarylene ether solution into droplets, ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which (A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0° C. to Tc, where the critical temperature Tc in [° C.] can be determined by the numerical equation Tc=(77?c)/0.58 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and (C) has component (1) in concentrations of 5% by weight to cc, where the critical concentration cc in [% by weight] can be determined by the numerical equation cc=77?0.58*T in which T is the temperature in the precipitation bath in [° C.], where the percentages by weight are each based on the sum of the percentages by weight of component (1) and of component (2) in the precipitation bath.

Abstract: The present invention relates to a process for the production of low-chlorine-content polybiphenyl sulfone polymers, to the polybiphenyl sulfone polymers obtainable in this way, to polybiphenyl sulfone polymers with less than 800 ppm content of organically bonded chlorine, to thermoplastic molding compositions and moldings, fibers, films, membranes, or foams comprising the polybiphenyl sulfone polymers mentioned, and also to their use for the production of moldings, of fibers, of films, of membranes, or of foams.