On the Treatment of Rayons with Synthetic Resins by means of an Improved Method.：Especially, on the Treatment of Rayon Crepe Fabrics

The study of an entirely new method of applying synthetic resins to rayons in 3 forms (i.e. in staples, yarns and fabrics) had been started by the author, and abstracts were reported from time to time in the Bell, Inst.Chem. Res. KyotoUniversity during 1949-1952. The author in the present paper deals with the pre-treatment of the material to be processed, especially with that of rayon crepe fabrics, the fiber of the twisted yarns of the fabrics being usually very difficult to be penetrated by the pre-condensate of the resin under the dipping condition now in practice. The pre-treatment accompanied by a good cure was found to be very effective to produce a singular effect of the author's own method, which was characterized by an elastic and soft handle with a high crease recovery, and a shrinkage on wetting that was quite reversible on drying