Appeal No. 2001-0008
Application 09/298,572
13.) Mizumura utilizes a minimum temperature of 180EC for
curing. (See col. 8, l. 30-34.)
The Japanese patent discloses a process for
preparation of acrylic resins which are suitable for use in
powder coating compositions. The Japanese patent utilizes
standard epoxy
compounds such as triglycidyl isocyanurate as hardeners. (Page
7.) No indication of curing temperature is given other than
in the examples wherein the compositions are cured at 180EC.
(See pages 9-15.)
Cotting is directed to formulating polyglycidyl
compounds which may be used in powder coating compositions to
replace triglycidyl isocyanurate without essential changes in
the other components of the compositions or production of the
finishes. (Col. 10, l. 36-45.) Cotting states that the powder
coating compositions are cured at a temperature of not less
than 100EC and preferably at a temperature of 150-250EC.
(Col. 11, l. 43-45.)
According to the Examiner:
It would have been obvious to employ the
diglycidyl hexahydroterephthalate disclosed
8
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