Appeal No. 2001-0831
Application No. 08/765,079
The claims on appeal relate to a powder coating composition
obtained by reacting a polyisocyanate with three distinct
alcoholic compounds.
Claim 14 is illustrative of the subject matter encompassed
by the appealed claims, and reads as follows:
14. A powder coating composition comprising a powdered
solid ethylenically unsaturated material having a melting
point from 60o to 120 oC and an average particle size from 10
to 250 µm which can melt and reflow prior to curing obtained
by reacting in bulk in a molten state a polyisocyanate with
an at least stoichiometric amount of an alcoholic component
comprising: monohydric alcohol component with an ethylenic
unsaturation derived from acrylic acid or methacrylic acid;
saturated monohydric alcohol and a monomeric polyol, said
monomeric polyol being present in an amount not more than
50% of the stoichiometric amount of hydroxyl groups required
to react with the isocyanate groups of the polyisocyanate.
All of the appealed claims stand rejected for obviousness
under 35 U.S.C. § 103 based upon a combination of the following
two prior art references:
Meixner et al. (Meixner) 5,068,305 Nov. 26, 1991
Takayama et al. (Takayama) 5,382,619 Jan. 17, 1995
Based upon the record before us, we agree with the appellant
that the examiner has failed to establish a prima facie case of
obviousness against any of the claims at issue. Accordingly, we
shall reverse the examiner’s rejection.
In our opinion, there is no doubt that the powder coating
composition taught by Meixner satisfies all of the limitations
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