Appeal No. 94-3359
Application 07/941,566
to an acyl derivative which prevents the hydroxyl groups from
entering side reactions during acetal formation (column 1, lines
47 through 56). The acyl moieties serve as protecting groups
which may be removed by alkaline alcoholysis (column 2,lines 18
through 21). The polymers prepared by the process are polyvinyl
alcohol polymers with random units of dihydroxy aromatic acetals
as substituents (column 2, lines 22 through 25).
Scullard discloses that polymers having pendant
resorcinol (1,3-dihydroxy benzene) groups attached thereto may be
used in photographic elements and photographic processes to
provide improved image qualities and which polymers are non-
diffusing (column 1, lines 43 through 53). By non-diffusing,
Scullard intends that for all practical purposes, the polymer
does not migrate or wander through the organic colloid layers
which comprise the photographic elements in which the polymers
are used (column 5, lines 4 through 10). The polymers containing
said pendant resorcinol groups may be incorporated into
multilayer photographic elements (column 1, lines 54 through 65).
The resorcinol-containing polymers may be incorporated into the
photographic elements by any well-known prior art technique and
in any concentration, depending on the intended use (column 4,
lines 25 through 31). The resorcinol-containing polymers may be
located in any layer of a photographic element (column 4, lines
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