MICROCELLULAR AND NONCELLULAR LIGHT-RESISTANT POLYURETHANE MATERIAL AND A METHOD OF PREPARING THE SAME Russian patent published in 2008 - IPC C08G18/22 C08G18/24 C08G18/79 C08G18/66 

FIELD: polymer materials.

SUBSTANCE: invention, in particular, relates to preparing microcellular and noncellular polyurethane material with density above 500 kg/m³, wherein reaction mixture of polyurethane precursors is brought into reaction resulting in polyurethane material, reaction mixture consisting of (i) isocyanate component containing at least one isocyanate compound with at least two NCO groups, which are not directly linked to aromatic group, (ii) components reacting with isocyanates, and (iii) lead-free catalysts containing at least one organobismuth(III) compound containing C₁₃-C₁₉-alkyl or alkenyl group or organotin(IV) compound containing C₁₃-C₁₉-alkyl or alkenyl group, or linear or branched C₁-C₁₉-alkyl or alkenyl group substituted by one or more OH groups. Catalyst may further contain organozinc carboxylate compound. Polyurethane obtained using above catalyst is also described. Material according to invention contains below 250 ppm, preferably below 100 ppm, volatile organic compounds.

EFFECT: reduced content of volatile organics in polyurethane material.

2 cl, 1 tbl