The closed cell foam cell, cellular or multimodal, sheet of polystyrene foam, extruded polystyrene foam panel and foam expansu00ecvel

摘要

The closed cell foam cell, cellular or multimodal, sheet of polystyrene foam, extruded polystyrene foam panel and foam expansu00ecvel. The present invention relates to the expansion agents that comprise the full of chloro - fluorocarbons and / or hydrofluorocarbons useful in compositions espumu00e1veis.They are also described the methods for the formation of a foam that comprises the expansion agents described above.