| abstract |
Dry hydrophobic starch derivatives which are dispersible in water below 100*C to form a stable colloidal suspension, are prepared by subjecting a granular water-insoluble hydrophobic starch derivative having a degree of substitution of 0.1 to 1.0 and a moisture content of 4 to 15 percent to mechanical shear and compression at superatmospheric pressure and 100* to 250*C, forcing the mass through a restrictive opening with a sudden release of the pressure to expand the mass to a porous composition of fragmented granules, and comminuting an porous composition. |