NOVEL STABLE AQUEOUS DISPERSIONS OF HIGH-PERFORMANCE THERMOPLASTIC POLYMER NANOPARTICLES AND THE USES OF SAME AS FILM-FORMING AGENTS

摘要

Stable aqueous dispersion of nanoparticles of high performance polymer or mixture of thermoplastic polymers, is claimed. Independent claims are included for: (1) a preparation of the dispersion comprising transferring polymer of a solution or dispersion in an organic solvent or organic solvent mixture towards an aqueous phase, such as the polymer, which sis soluble or dispersible in the organic solvent and organic solvent, which is miscible or immiscible in water; (2) a process of film formation of a support comprising filing of the dispersion on the support, and evaporating water; (3) sized fibers obtained by the process; (4) a sizing comprising nanoparticles of a polymer or mixture of high performance thermoplastic polymers; and (5) a composite material comprising sized fibers and a thermoplastic polymer matrix.