Patent ID: 7820768

Claim:
A process for the preparation of storage-stable polyamidoimide resins, comprising reacting free isocyanate, isoimide, allophanate, biuret, uretdione, carboxylic anhydride or blocked isocyanate groups of the polyamidoimide resins which are reactive toward moisture, with one or more compounds of the following formula (I) H—X—R 1 (I) in the absence of moisture, wherein: X is NR 2 , and R 1 is a straight-chain or branched alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms or an aralkyl group or an aryl group; and, R 2 is a straight-chain or branched alkyl group having 1 to 6 carbon atoms, an aralkyl group or an aryl group; or R 1 and R 2 together form a cycloalkyl radical having 4 or 5 methylene groups, and wherein the cycloalkyl radical optionally has a methylene group replaced by oxygen or an NR 3 group, and R 3 being a straight-chain or branched alkyl group having 1 to 3 carbon atoms, and the reaction can be carried out in a temperature independent manner and optionally in the presence of an organometallic or tertiary amine catalyst.