Isocyanater, der er blokerende ved hjælp af hydroxyaromatiske forbindelser

摘要

Blocked isocyanate is claimed which is obtd. by condensing an isocyanate with a hydroxylated aromatic deriv. having carboxyl and/or nitrile functional gps. and has a fusion pt. of at least 30 degrees C. The prepn. of the above prod. and the prodn. of a powder coating by heating a compsn. at 100-250 degrees C are also claimed.