Appeal No. 94-3726
Application 07/978,531
phthalic acid derivatives and epoxidized soybean oil, to an
elevated temperature of between 30 to 100BC. to provide a
mixture characterized by an increased viscosity sufficient to
form a stable dispersion upon cooling (column 2, lines 10-19,
and claim 7). Typical cooling, as taught for the first
embodiment, is to -20 to 40BC. to provide a mixture having a
viscosity of between 2,000 and 30,000 centipoise (see column
2, lines 4-9, and claim 1). Suitable resins useful in the
plastisol include poly(vinylchloride) (column 3, lines 48-63).
The solid biocide is added to a liquid carrier and mixed at
high speed, then heated with the plastisol to form a hot
dispersion, with subsequent cooling to produce a stable
dispersion with a viscosity of 8500 centipoise (see Example 2
in column 6).
Anderson also discloses two embodiments of forming a
storage stable liquid dispersion of a biocide, with the second
embodiment comprising the steps of heating a mixture of a
biocide, a carrier and a heat swellable polymer to a
temperature of about 50 to 120BC. to cause the polymer to
swell, with subsequent cooling to a temperature of -20 to
40BC. to provide a storage stable mixture having a viscosity
13
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