NATURAL OIL-BASED POLYOLS WITH INHERENT SURFACE-ACTIVE PROPERTIES FOR FOAMING POLYURETHANES Russian patent published in 2011 - IPC C08G18/10 C08G18/36 C08G18/63 C08G18/66 C08G101/00 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing an elastic polyurethane via reaction of a mixture of (a) at least one organic polyisocyanate with (b) a composition of polyols containing (b1) up to 99 wt % of at least one polyol compound having nominal initial functionality of 2-8 and hydroxyl number from 15 to 800 mg KOH/g, and (b2) 1-100 wt % of at least one natural oil-based polyol with hydroxyl number less than 300 mg KO/g, and viscosity at 25°C less than 6000 mPa•s, (c) optionally in the presence of one or more catalysts to obtain polyurethane, (d) in the presence of a blowing agent and (e) optional additives or auxiliary agents which are essentially known for obtaining foamed polyurethanes, where the overall reaction mixture essentially does not contain silicone-based surfactants, and the elastic foamed polyurethane has ball drop resilience of 45% or higher according to ASTM 3574.03. Described also is elastic polyurethane containing the reaction product of said reaction mixture.

EFFECT: obtaining elastic polyurethane having good properties, which is obtained using polyols from renewable sources, having inherent surface-active properties and which further help to solve the task of reducing the level of volatile organic compounds (VOC) in foam plastic.

22 cl, 7 ex, 4 tbl