Photocurable polymer compositions

A polymer formulation (F) comprising, based on the total weight of the formulation (F):

• from 1 to 50 wt. %, based on the total weight of F, of at least one poly(aryl ethersulfone) (PAES) polymer (P) comprising at least one terminal group of formula (M1) or (M2):
• wherein
• R2 is H or CH3,
• X is a bond or (CH2)n with n ranging from 1 to 20, and
• wherein the number average molecular weight (Mn) of the polymer (P) is of more than 12,000 g/mol, as determined by gel permeation chromatography (GPC) using methylene chloride as a mobile phase and polystyrene standards,
• at least one polyfunctional acrylate,
• at least one solvent,
• optionally at least one photoinitiator, and
• optionally at least one blocker,
• wherein
• wherein the polyfunctional acrylate is according to formula (I):
• wherein
• R3 is H or an alkyl having 1 to 5 carbon atoms,
• R4 is according to formula (II):
• where n varies between 0 and 10;
• or
• wherein the polyfunctional acrylate is selected from the group consisting of trimethylolpropane propoxytriacrylate, pentaerythritol triacrylate (PETA), glyceryl propoxytriacrylate (GPTA), di(trimethylolpropane) tetraacrylate, glycerol propoxylate triacrylate, pentaerythritol tetraacrylate, 1,3,5-triacryloylhexahydro-1,3,5-triazine, trimethylolpropane trimethacrylate, tris[2-(acryloyloxy)ethyl]isocyanurate, and mixtures thereof.