Study on the mannich reaction of carboxyl #alpha#-H of acrylic acid and its application in the synthesis of tanning agent

摘要

The Mannich reaction of carboxyl #alpha#-H of acylic acid homopolymer has been studied and characterized by the H-NMR and C-NMR and IR. According to the Mannich reaction, a selective filling retanning agent -SAT has been synthesized and used in the retanning of the pigskin garment leather. The results show that th carboxyl #alpha#-H of acrylic acid homopolymer is active enough to carry on Mannich reaction inproper conditions. SAT makes leather plump, hair pores shrink, and it can do help to overcome the shortage of pastel shades and has excellent selective filling property.