Appeal No. 1996-2113
Application No. 08/192,220
According to appellants, the invention is directed to the
discovery that select amounts of a first reactive ingredient
and a second reactive ingredient, when combined in a
chemically-reactive environment, produce a reaction product
that is effective for reducing the rate at which insoluble
sulfur converts to a migratable form of sulfur (Brief, page 3,
citing the specification, page 3, ll. 7-21). The first
reactive ingredient is itself a reaction product of an
aliphatic ketone and a primary aromatic amine while the second
reactive ingredient is an acid anhydride (id.). Illustrative
claim 1 is reproduced below:
1. In a formulation which includes insoluble sulfur, the
improvement which comprises an effective amount of a reaction
product in the formulation, wherein the reaction product is
produced by combining:
(A) a first reactive ingredient, itself produced by
reactively combining an aliphatic ketone with a primary
aromatic amine, and
(B) a second reactive ingredient, which is an acid
anhydride, wherein the reaction product is present in the
formulation in an amount that is effective for reducing the
rate at which insoluble sulfur converts to a migratable form
of sulfur.
2
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