초록 ▼

The invention refers to a process for obtaining a melt of destruction starch containing a finite amount of electrolytes comprising: A. providing a starch material containing free electrolytes and/or bound phosphate salts, B. removing partially or wholly the free electrolytes and/or the metallic cati

The invention refers to a process for obtaining a melt of destruction starch containing a finite amount of electrolytes comprising: A. providing a starch material containing free electrolytes and/or bound phosphate salts, B. removing partially or wholly the free electrolytes and/or the metallic cations from the phosphate groups of the starch, C. optionally replacing a part or all of the free H+-ions of the free phosphate groups with metallic monovalent and/or polyvalent cations, D. conditioning the obtained starch material to a water content of 10 to 25% by weight calculated on the basis of starch and water, E. heating said starch/water composition at elevated pressure to a temperature sufficient to essentially destructure the starch while maintaining said water content until a melt of destructurized starch is formed. The invention further refers to the process of F. cooling said melt (as obtained under E.) optionally after forming the melt into a shaped article, to a temperature below the glass transition temperature of said composition to form a solid shaped article.

대표청구항 ▼

A process for obtaining a melt of destructurized starch containing a finite amount of electrolytes comprising: A. providing a unwashed natural starch containing free electrolytes and/or bound phosphate salts, B. removing partially or wholly the free electrolytes and/or the metallic cations from the

A process for obtaining a melt of destructurized starch containing a finite amount of electrolytes comprising: A. providing a unwashed natural starch containing free electrolytes and/or bound phosphate salts, B. removing partially or wholly the free electrolytes and/or the metallic cations from the phosphate groups of the starch, C. optionally replacing a part or all of the free H+-ions of the phosphate groups with metallic monovalent and/or polyvalent cations, D. conditioning the obtained starch material to a water content of 10 -25% by weight calculated on the basis of starch and water, and E. heating said starch/water composition at an elevated pressure to a temperature sufficient to essentially destructure the starch while maintaining said water content until a melt of destructurized starch is formed.