New polyol compound having isocyanate functionality of greater than 2 and a monomer e.g. a cycloaliphatic compound useful in a hardening composition for coating the substrate e.g. metal substrates of automobile and aeronautical fields

摘要

Polyol compound (A) having isocyanate functionality of greater than 2 and a monomer (X) e.g. a cycloaliphatic, aromatic or heterocyclic compound or a particle of a cross linked polymer with a functional group, is new. Polyol compound (A) having isocyanate functionality of greater than 2 and a monomer (X) e.g. a cycloaliphatic, aromatic or heterocyclic compound or a particle of a cross linked polymer with a functional group of formula B1(H) n or B2(H) n1, when B1 is a secondary nitrogen then (X) is the cycloaliphatic compound having at least two rings, where the X:[X+(poly)isocyanate] weight ratio is 50%, is new. H : unstable hydrogen; B1 : O, S or N (where N is prim., or sec., N), C(=O)-O or -C(=O)-N, O=P(O) 2, O=P(O)OR1, O=P(O) 3 or O=P(O) 2OR1; R1 : alkyl or aralkyl (where the alkyl is optionally branched or optionally interrupted with a heteroatom); n : 1-2; n1 : 1-3; B2 : SiR2R3R4; and R2-R4 : O, alkyl having group reacted with (poly)isocyanate or aralkyl, aryl, O-alkyl or O-aralkyl. Independent claims are included for: (1) the preparation of the compound; (2) a hardening composition comprising the compound; and (3) a method of coating on a substrate comprising reacting the composition with a compound containing the precursor to release hydroxyl functional groups and applying the obtained mixture on the substrate.