DE568040C - Process to increase the wetting ability of bast fiber slivers on the wet spinning machine - Google Patents

Description

Process for increasing the wetting ability of bast fiber sliver on the wet spinning machine according to patent 526 372 Patent 526 372 protects a process for wet spinning bast fiber sliver in which the roving is exposed to an aqueous solution of alkali salts of mineral oil sulfonic acid, aromatic sulfo fatty acids or other high molecular weight sulfonic acids at the usual temperature is subjected to the cyclic series.

It has now been found that aqueous solutions of free high molecular weight sulfonic acids can also be used successfully as wetting agents in wet spinning. The solutions of the mineral oil sulfonic acids, the aromatic sulfofatty acids, the hydroanthrazene sulfonic acids or the naphthalene sulfonic acids alkylated in the nucleus and similar sulfonic acids with high molecular weight and high wetting and emulsifying power act more strongly and more quickly on crude fiber than the salts of these sulfonic acids. By adding a very small amount of such sulfonic acids to the wetting water, the yarn is obtained significantly more even, cleaner and lighter. The most advantageous concentration of such solutions is within the limits of 0.05 to 0.3 N. B. wetted on the bobbins, and spinning continues without passing through the solution.

Those remaining on the raw yarn obtained by this process Pectins, fats, waxes and other additions are used. subsequent bellies easily attacked and removed by alkalis. All subsequent processes the yarn processing can then be carried out faster than before. You get one finished goods of particularly high purity and whiteness. Such commodity is also significant easier to color.

Claims (1)

PATENT CLAIM: Process for increasing the wetting ability of bast fiber slivers on the wet spinning machine according to patent 526: 37--. characterized in that one at In place of the salt solutions, the solutions of their acids are used.