Low molecular weight products and their use as reversible or permanent low temperature crosslinkers in Diels-Alder reactions

摘要

Reaction product based on A) at least one isocyanate and / or amine with at least two functional groups per molecule of the general formula 1 ** Formula ** with the meaning n = 0, 1, X = NCO, NH2 , NHA, A = H, simultaneously or independently of each other, alkyl radical with 1 to 16 carbon atoms, cyclic hydrocarbon radical, aromatic hydrocarbon radical, this radical may also contain heteroatoms and / or functional groups and / or double bonds, R = aliphatic or cycloaliphatic hydrocarbon radical which may also contain heteroatoms and / or functional groups and / or double bonds, and B) at least one diene with a functional group of the general formula 2 ** Formula ** with the meaning Y = CH2OH, COOH, COOA, CH2NH2, CH2NHA, A, Z and R1 - R4 = simultaneously or independently of each other, alkyl radical with 1 to 16 carbon atoms, cyclic hydrocarbon radical, aromatic hydrocarbon radical, these radicals may also contain heteroatoms and / or group s functional and / or double bonds, where all functional groups X of A) are reacted with the equivalent amount of B).