Abstract
Reactions of octadecyl ethylene urea and water-repellent effect of derivatives of octadecyl isocyanate were studied.
Octadecyl ethylene urea reacted with nucleophilic agents openning the ethylene imino ring at lower temperature, while at higher temperature it reacted as octadecyl isocyanate which was formed by the decomposition of octadecyl ethylene urea. It was supposed that the reactions of the above two types with cellulose would proceed, when cellulose treated with octadecyl ethylene urea was cured.
As octadecyl isocyanate derivatives, N-octadecyl phenyl urethane, sodium bisulfite adduct, octadecyl urea, dioctadecyl urea and octadecyl isocyanate trimer were prepared. It was found that these derivatives reacted with cellulose at higher temperature as octadecyl isocyanate which was formed by the thermal decomposition, and accordingly viscose rayon fabrics treated by the derivatives had water-repellent property. But the water-repellency was not so remarkable.
