Appeal No. 97-3050 2
Application No. 08/646,646
composition, said method consisting essentially of:
(a) preparing a filler/oil masterbatch comprising:
(I) adding an unreactive silicone oil and untreated agglomerated filler
particles to a mixer:
(ii) adding a filler treating agent selected from the group consisting of
organosilanes, polymeric organosilanes and silazanes to said unreactive silicone oil/filler
mixture; and
(iii) mixing the treating agent and silicone oil/filler mixture at mixing
conditions sufficient to break down the aggregated filler particles to an average size of
less than 300 in a time period of less than about 24 hours to form a filler/oil masterbatch;
and
(b) adding said filler/oil masterbatch to a reactive silicone oil.
THE REFERENCES OF RECORD
As evidence of obviousness, the examiner relies upon the following
references.
THE REJECTIONS
OPINION
prima facie In re Oetiker
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Last modified: November 3, 2007