POLYISOCYANATE CONTAINING ALLOPHANATE AND SILANE GROUPS, USE THEREOF AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2015 - IPC C08G18/78 C08G18/32 C07F7/10 C07F7/18 

FIELD: chemistry.

SUBSTANCE: invention relates to chemistry of polyurethanes, which includes polyisocyanate and a method for production thereof. Described is a method of producing polyisocyanates containing allophanate and silane groups by converting A) at least one hydroxy urethane and/or hydroxy amide, having silane groups, obtained from a reaction of amino silanes with cyclic carbonates and/or lactones, and B) at least one polyatomic hydroxy group functional component with molecular weight in the range of 62 to 2000 g/mol with molar excess relative to NCO reactive groups of components A) and B); C) at least one diisocyanate containing an aliphatic, cycloaliphatic, fatty-aromatic and/or aromatic bonded isocyanate groups, and optionally subsequent removal of unreacted excess diisocyanate. Also described is a polyisocyanate containing allophanate and silane groups obtained using said method.

EFFECT: obtaining polyisocyanates containing silane groups which provide considerably faster drying even when combined with only bifunctional film-forming materials and simultaneously demonstrate excellent adhesion properties of modern silane-modified allophanate polyisocyanates.

13 cl, 1 tbl, 11 ex