LIQUID ISOCYANATE COMPOSITION Russian patent published in 2015 - IPC C08G18/48 C08K3/34 C08L75/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining a liquid isocyanate composition, which is liquid at 50°C, for obtaining a polyurethane or polyurea material. The method includes the supply of, at least, one isocyanate component, clay nanoparticles and, at least, one polyol, which has terminal EO units. After that, in accordance with the claimed method the said isocyanate component and the said clay nanoparticles are combined. The said combination of the isocyanate component and clay nanoparticles is mixed for the time period in the range from 1 min to 10 h under high shear, involving shear rates higher than 1000 s^-1, with the simultaneous support of the said combination temperature in the range from 25°C to 80°C. Then the said polyol, possessing the terminal EO units, is added to the said combination of the isocyanate component and clay nanoparticles, in such an amount that the ratio NCO/OH is in the range from 1500 to 1.5. The obtained combination of the isocyanate component, clay nanoparticles and polyol, possessing the terminal EO units, is mixed for the time period in the range from 1 min to 10 h under high shear, involving shear rates higher than 1000 s^-1, with the simultaneous support of the said combination temperature in the range from 60°C to 100°C with obtaining the liquid isocyanate composition. The claimed method makes it possible to obtain a more stable dispersion of clay nanoparticles in isocyanate.

EFFECT: invention relates to the liquid isocyanate composition, obtained by the said method, and to its application in obtaining polyurethane or polyurea materials.

11 cl, 21 dwg, 3 tbl, 4 ex