AROMATIC SULFONE POLYMER COMPOSITION COMPRISING TETRAFLUOROETHYLENE POLYMER PARTICLES

摘要

The invention relates to an aromatic sulfone polymer composition comprising : - at least one aromatic sulfone polymer [polymer (P)]; - from 0.02 to less than 10 wt %, based on the total weight of the composition, of a tetrafluoroethylene (TFE) polymer [polymer (F)] under the form of nanoparticles, wherein said nanoparticles have an average primary particle size of less than 100 nm. The compositions of the invention advantageously display an unexpected combination of excellent mechanical properties, excellent chemical resistance, excellent optical properties (transparency and/or colorability) and low flammability. Still an object of the invention is a process for manufacturing aromatic sulfone polymer compositions. According to a preferred embodiment, said process comprises a co-coagulating step of an aromatic sulfone polymer solution with TFE nanoparticles. Still objects of the invention are the articles comprising the composition as above specified.