Abstract
In the previous work, it has been found that the heat resistance of the rayon cord is improved by the finishing with many amphoteric surfactants of aminocarbonic acid derivative type but water pick up is insufficient.
But, in this work, by the modification of monoaminopropionic acid type surfactant, the water pick up of which was relatively high, the finishing agents with suitable properties, such as N-stearyl-N-(1-methyl-2-hydroxyethyl)-aminopropionic acid and N-stearyl-aminodipropionic acid, have been obtained.
