POLYMER NANOCOMPOSITES AND PREPARATION METHODS THEREOF Russian patent published in 2010 - IPC C08K3/34 B82B3/00 

FIELD: chemistry.

SUBSTANCE: methods are described for preparing polymer nanocomposites using organic solvents or mixtures of solvents. At least one isobutylene-based elastomer is brought into contact with at least one sheet filler, at least one solvent and vulcanising substance. The obtained composition has oxygen penetration rate at 40°C of approximately 150 mm·cm³/[m²·day] or less. In the second version at least one isobutylene-based elastomer is brought into contact with a solution containing at least one sheet filler to obtain a composition. In the third version a solution (a) is brought into contact with a solution (b), and at least one solvent and at least one hydrocarbon are removed from the product. Solution (a) contains at least one hydrocarbon and at least one sheet filler, and solution (b) contains at least one solvent and at least one isobutylene-based elastomer. The nanocomposition obtained using any of the versions is free from functionalising amines.

EFFECT: provision for optimum elasticity of polymer nanocomposites, as well as higher efficiency and/or simplicity of the design when the reactor system is combined with subsequent treatment processes.

27 cl, 2 tbl, 6 dwg, 25 ex