EXPANDABLE STYRENE POLYMERS AND FOAMS WITH DECREASED WATER ABSORPTION

摘要

The present invention relates to an expandable styrene polymer which cont ains athermane particles and is coated with a hydrophobizing means, wherein the hydrophobizing means contains 10 to 90% by weight of at least one triest er of at least one fatty acid with a multihydric alcohol as component A; 5 t o 70% by weight of at least one monoester of a fatty acid with a multihydric alcohol as component B; 5 to 80% by weight of at least one metal salt of a fatty acid as component C; 5 to 50% by weight of at least one silicate as co mponent D; and 0 to 30% by weight of at least one antistatic agent as compon ent E; and the sum of components A to E of the hydrophobizing means amounts to 100% by weight. The invention also relates to a method for the production of expandable styrene polymer by coating an expandable styrene polymer whic h contains athermane particles with this hydrophobizing means, a foam produc ed from this expandable styrene polymer, and the use of a hydrophobizing mea ns for coating expandable styrene polymers containing athermane particles.