A poly (amido-amine) was synthesized by reaction of piperazine with methylene-bis-acry-lamide in aqueous solution. Factors influencing degree of polymerization are discussed. The poly (amido-amine) so obtained is tough

milky solid with high crystallinity. It is soluble in water

formic acid

acetic acid and phenol

but insoluble in alcohols

acetone

chloroform

ethylene dichloride and even dimethylformamide

dimethylsulfoxide. By refluxing in methanol

it reacts with butyl bromide and partially quaternized.