Trisiloxane ethoxylates

The commercial formulation of M2D —C3—0— (EO) - Me is marketed as a trisiloxane ethoxylate product with a maximum of 20% alkoxide by-products.1 The synthetic reaction is always performed with an excess... 

The wetting exhibited by some trisiloxane surfactants is so extensive and rapid that it has been referred to as superspreading [3]. Typically, a small drop (50 pL) of a diluted aqueous solution (0.1 % w/w) of such a trisiloxane spreads out on a hydrophobic surface such as a polypropylene sheet into a thin, wetting film approx. 80 mm in diameter within tens of seconds. This is about 20 times the area wetted by a 1 % w/w solution of a conventional organic surfactant such as a nonylphenol ethoxylate. 

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