METHOD OF INCREASING VISCOSITY WHEN BREAKING POLYISOCYANURATE-CONTAINING REACTION PRODUCTS Russian patent published in 2020 - IPC C08G18/48 C08G18/66 C08G18/76 C08G18/32 C08G18/22 C08G18/09 

FIELD: chemistry.

SUBSTANCE: invention relates to polyisocyanate-containing materials having a glass transition temperature of more than 100 °C. Disclosed is a reactive curable composition for producing polyisocyanate-containing products having a glass transition temperature of more than 100 °C, obtained by combination and mixing with isocyanate index of at least 100, at least 40 wt. % aromatic polyisocyanates; 1-30 wt. % polytetrahydrofuran, having average molecular weight 1000–5000 g/mol, as an impact enhancing agent; at least 20 wt. % low molecular weight polyols having a number-average weight of <1000 g/mol, based on the total weight of the curable composition; trimerization catalytic composition containing lithium halide, where aromaticity is at least 25 wt. % in terms of total weight of curable composition. Disclosed also is a method of making said composition, a method of producing polyisocyanurate-containing materials and corresponding materials.

EFFECT: technical result is disclosed composition enables to obtain structural composite materials with improved plasticity while maintaining other process and operational properties.

20 cl, 1 dwg, 2 tbl, 4 ex