Coating processes – Particles – flakes – or granules coated or encapsulated – Inorganic base
Reexamination Certificate
2006-07-11
2006-07-11
Moore, Margaret G. (Department: 1712)
Coating processes
Particles, flakes, or granules coated or encapsulated
Inorganic base
C106S490000, C423S335000, C423S338000
Reexamination Certificate
active
07074457
ABSTRACT:
A hydrophobic precipitated silica is prepared by a process comprising:a) preparing a mixture of an organopolysiloxane derivative and a precipitated silica;b) conditioning the mixture obtained at a temperature ranging from 10 to 150° C. for a period ranging from 0.5 to 72 h, andc) conducting oxidative heat treatment under fluid conditions at a temperature more than 300° C. with an oxidizing gas.
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Meier Karl
Obladen Helga
Panz Christian
Schmoll Ralf
Stoffels Ralf
Degussa - AG
Moore Margaret G.
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