Patent 7645360 was granted and assigned to Wacker Chemie AG on January, 2010 by the United States Patent and Trademark Office.
Defoamer compositions of high effectiveness containing at least one siloxane-based antifoam and polysiloxane copolymers obtained by coupling a polysiloxane bearing active-hydrogen-containing hydrophilic polymer moieties by means of a di- or polyisocyanate.