초록 ▼

Raw starch is slurried in an aqueous solution containing up to and above saturation levels of an ammonium sulfate, ammonium monobasic or dibasic phosphate, sodium sulfate or mixtures thereof. The slurry is then cooked at temperatures above about 150°C. The resulting starch cook is then extruded usin

Raw starch is slurried in an aqueous solution containing up to and above saturation levels of an ammonium sulfate, ammonium monobasic or dibasic phosphate, sodium sulfate or mixtures thereof. The slurry is then cooked at temperatures above about 150°C. The resulting starch cook is then extruded using conventional methods into a coagulating salt bath thereby producing a starch fiber. When the starch is cooked in the presence of a salt prior to spinning in the coagulation bath, dilution of the salt in the coagulation bath is minimized, thus reducing the evaporation load.

대표청구항 ▼

In a method for the production of starch fibers wherein a stabilized colloidal dispersion of starch is extruded into a moving coagulating salt bath containing a salt selected from the group consisting of ammonium sulfate, ammonium sulfamate, mono-basic ammonium phosphate, di-basic ammonium phosphate

In a method for the production of starch fibers wherein a stabilized colloidal dispersion of starch is extruded into a moving coagulating salt bath containing a salt selected from the group consisting of ammonium sulfate, ammonium sulfamate, mono-basic ammonium phosphate, di-basic ammonium phosphate, sodium sulfate and mixtures thereof, the improvement which comprises adding 1 to 130% by weight of a salt selected from the group consisting of ammonium sulfate, ammonium sulfamate, ammonium monobasic or dibasic phosphate, sodium sulfate and mixtures thereof, to an aqueous starch slurry; and cooking the starch slurry to form the colloidal dispersion of starch.