OBTAINING AND APPLYING NEW THERMOPLASTIC POLYURETHANE ELASTOMERS ON BASIS OF SIMPLE POLYEFIRCARBONATPOLIOLS Russian patent published in 2018 - IPC C08G18/10 C08G18/12 C08G18/44 C08G18/66 C08G18/32 

FIELD: technological processes.

SUBSTANCE: method includes interrelation of at least one organic diisocyanate A), at least one polyol B) with average molecular weight M_n≥500 and ≤5000 g/mol, one or more agents of chain elongation C) with molecular weight ≥ of 60 and 490 ≤g/mol and, if necessary, the catalyst E). The interrelation of components is carried out in a single step in a reaction extruder or in a tape method with a mixing head. The molar ratio between the isocyanate groups A) and the sum of the groups capable of reacting with the isocyanate of groups in B) and C) is ≥0.9:1 and ≤1.2:1. Component B) contains at least one simple polyester carbon polyol that is received by attaching carbon dioxide and alkylene oxides to H-functional substances-initiators. The content of carbonate groups of simple polyester carbon polyol is ≥3 and ≤35 wt %. The number-average molecular weight of the polyester carbon polyol is ≥500 and ≤10000 g/mol and the average functionality for OH is 1.85 to ≤2.5.

EFFECT: received thermoplastic polyurethane elastomers have good mechanical properties, in particular high tensile strength, low abrasion and superior thermal resistance.

13 cl, 2 tbl, 1 ex