Appeal No. 1997-4104
Application 08/383,238
gloss paints find particular utility as exterior paints for
airport buildings such as airport terminals, airplane hangars,
airport gates, and air freight buildings; bus terminals;
railroad stations and terminals; railroad crossing signals;
railroad block signals; railroad switches; bridges;
residential and industrial roofing; street light and traffic
light support structures. See the specification at page 6,
second full paragraph.
Appellants explain in their specification at page 1 that
present prior art commercial polyvinylidene fluoride-
containing paints provide coatings with a 60E gloss of 30
(ASTM Designation D523-89) using a standard pigmented base
formula, such as a blue base formula, after coating
development. Appellants further acknowledge that a PVDF paint
or coating which includes a flatting agent such as fumed
silica is currently available which effects a reduced gloss,
but disavantageously provides reduced weatherability
properties. Apparently, in further referring to such prior
art PVDF resins, appellants report that such resins “for use
in maintenance-free paints” have a melt viscosity of from
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007