IMPROVEMENT IN SHRINKPROOFING BY AMINE TREATMENT OF PHOSPHORYLATED WOOL

The amine treatment of phosphorylated wool (phosphorus trichloride fol lowed by basic hydrolysis) with either N-methylamine or tetraethylenep entamine gave a product which had marked shrink-resist properties, N-m ethylamine being the more effective reagent The shrink-resist properti es of the N-methylamine-treated wool was increased by Basolan polymer application with minimal fabric shrinkage being obtained with a 1.0% B asolan application; increased shrinkage occurring with decreasing leve ls of Basolan. From studies which used polystyrene resins with bound s ynthetic peptides as model substrates, the data obtained suggested tha t the secondary modification procedure possibly proceeded via base-med iated beta-elimination of the phosphorylated seryl (and threonyl) resi dues followed by amine addition to the resultant dehydroalanyl residue to give an amino side-chain amino acyl residue.