Solid silicone defoamer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 9, 1990
Grant Date -
N/A
app pub date -
Aug 30, 1988
filing date -
Aug 31, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solid silicone defoaming agent which includes a mixture of silicone oil having a viscosity of at least 20 centistokes at 25 degrees Centigrade and microparticulate silica, a copolymer selected from the group consisting of polyoxyalkylene and polyoxyalkylene/polysiloxane copolymers, and a wax selected from the group consisting of a water-insoluble wax which is insoluble in water at room temperature and which has a melting point of at least 35 degrees Centigrade, and a water-soluble wax which dissolves and disperses in water at room temeprature and which has a melting point of at least 30 degrees Centigrade.
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