急问：美国陶氏化学Dowfax DF 104 消泡剂的主要成分是什么,是哪一类聚醚

环氧丙烷环氧乙烷嵌段聚醚
DOWFAX N-Series Surfactants are linear EO/PO block copolymers,particularly effective as defoam/antifoam agents and low foam surfactants.More specialized,DOWFAX DF-Series Surfactants are designed for high-performance foam control formulations.