Appeal No. 96-0607
Application No. 08/134,778
According to appellants, the invention relates to a
corrosion resistant latex composition comprising an emulsion
in water of a core/shell polymer prepared by free radical
emulsion polymerization techniques wherein one of the monomers
used in the production of the polymer comprises a salt of 2-
acrylamido-2-methylpropane sulfonic acid and wherein the free 2
radical polymerization is conducted in the presence of a
diphenyl sulfonate surfactant (brief, page 2). Appellants’
latex composition is useful as a “waterborne coating binder”
in paints (specification, pages 2-3).
Appellants state that claims 14, 16, 30, and 32 “have
issues which support separate patentability” (brief, page 2).
We presume that appellants mean that claims 8-13, 15, 24-29
and 31 are considered to be one group while claims 14, 16, 30
and 32 are considered as the second group, with the claims of
each group standing or falling together. Appellants present
specific, substantive reasons for the separate patentability
2The monomer “2-acrylamido-2-methylpropane sulfonic acid”
is hereafter referred to by its acronym “AMPS”. See the
specification, page 2, last paragraph.
2
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