抄録
Viscose rayon which has been pretreated to imbibe various liquids is subjected to fibrous acetylation using perchloric acid as a catalyst. The catalytic action of perchloric acid is much greater than that of sulfoacetic acid. In both cases the influence of the imbibition and diluent liquid on the rate of the acetylation is similar. When methanol or ethanol is used as imbibition liquid the acelylation takes place smoothly with the perchloric acid catalyst. This may be attributed to the acceleration of displacement of imbibition liquid by the chemical reaction between alchol and acetic anhydride.
