The invention relates to the chemical modification of the sphingoid parts of glycosphingolipids. It has been possible by a series of reactions to introduce an amino group in the position of the carbon double bond in the sphingoid part after elimination of the long-chain aldehyde. Glycosphingolipids of the formula (2) and (3), where X and Y is a group capable of coupling, are suitable for coupling ...

An improved method for dewatering thin slurries of very fine clay or clay-like materials to yield high solids content filter cake, for example, 40% solids and greater, by the use of flocculating agent combinations involving polyethylene oxidetype flocculating agents and polyacrylamide-type flocculating agents. The method generally involves admixing the combination of flocculating agents with the s...