Polyurethane composition comprising hydroxyaldimines

摘要

Composition (A) comprises at least one aldimine compound (I) and at least one polyisocyanate (P). Composition (A) comprises at least one aldimine compound of formula ((HX-E-N=CH) n-Y1) (I) and at least one polyisocyanate (P). n : 2-4; X : O, S, N-R10 or N-R11; either E : divalent 3-20C hydrocarbyl; or E+R11 : trivalent 3-20C hydrocarbyl, where E optionally contains heteroatoms in the form of ethereal oxygen or tertiary amine nitrogen; Y1 : n-valent 6-30C organic radical, which optionally contains N and/or O atoms in the form of tertiary amino groups, ether, ester, carbonate, amide, comprising urethane or urea groups; and R10 : monovalent 1-20C hydrocarbyl optionally containing at least one carboxylic acid ester, nitrile, nitro, phosphonic, sulfonic acid or sulfonic acid ester group. Independent claims are included for: (1) an addition product obtained from the reaction of (I) with a polyisocyanate (P); (2) an aldimine compound of formula ((HX-E-N=CH-C(R1)(R2)) n-Y3) (III); (3) bonding a substrate (S1) with a substrate (S2) comprising: application of the composition to a substrate (S1), and contacting the applied composition to a substrate (S2) within the open time of the composition; or application of the composition to substrates (S1) and (S2) and contacting the applied composition with each other within the open time of the composition; and (4) a cured composition obtained by exposing (A) to moisture. Either R1, R2 : monovalent 1-12C hydrocarbyl; or R1R2 : divalent 4-12C hydrocarbyl with one part being optionally substituted 5-8C, preferably 6C carbocyclic ring; and Y3 : n-valent 1-24C organic radical optionally containing N and/or O in the form of tertiary amino groups, ether, ester, carbonate, amide exhibits, urethane or urea groups.