On the Treatment of Rayons with Synthetic Resins by Means of an Improved Method (XIX) The Stepwise Study on the “Presiton Process" in the Tow Form on a Semi Industrial Scale (11) From 'Presiton S' to' Presiton SW'

Abstract

In continuation of the foregoing paper，the present one deals with the next step of treatments in the “Presiton Process" on a semi industrial scale for the present sample， ‘Presiton S'. which is to bring about a thin outer layer of the second resin on the surface of the sample，and also to set the reactive dye at the same time on the peeled and disc10sed surface of the cellulosic fiber. The meaning and the theory of preparing ‘Presiton SW' are herewith given in the introduction. And the optimum conditions of preparing a good ‘Presiton SW' with respect to the used resin and dye are determined. and given as in the followings; The reactive dye ; Procion Brill. Orange GS The dye concentration in the 1st bath; 1 % The dip time 15 minutes The resin COnc. in the 2nd bath ; 4 % Catalyser ;D.A.P.，5 %， o. w. of resin Cure temp. and time ; 130℃ x 5 min