METHOD OF IMPARTING WATER REPELLENCY TO A GYPSUM-BASED PRODUCT FORMED FROM A PLASTER-BASED COMPOSITION

摘要

The invention relates to a method of imparting water repellency to a gypsum-based product formed from a plaster-based composition, which comprises adding to the said composition at least one compound comprising a polysiloxane and at least one compound comprising a pregelled starch. The invention likewise relates to a hydrophobicized, plaster-based composition comprising a polysiloxane and at least one compound comprising a pregelled starch, and also to its uses.