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AssigneeEastman Kodak Company
InventorsAlan R. Pitt, Trevor J. Wear, Elizabeth A. Simister, Alice G. Moon
Estimating the term…
A hydrophobically capped oligomeric acrylamide or pyrrolidone is employed as a coating aid in coating compositions, especially such compositions useful in the manufacture of photographic products. Preferred coating aids are surfactants having the general formula in which R, R1 and R2 are each independently selected from aliphatic hydrocarbyl, aryl-(aliphatic hydrocarbyl) and (aliphatic hydrocarbyl)-aryl groups, which groups may be unsubstituted, partially fluorinated or fully fluorinated, L is a sulphur atom or a linking group that contains a sulphur atom attached to the T group and T is a hydrophilic oligomeric group obtainable by the oligomerisation of one or more vinyl monomers having an amido function.
A coating composition that comprises a liquid medium that contains a hydrophilic colloid and a surfactant, characterised in that the surfactant is a hydrophobically capped oligomeric acrylamide or pyrrolidone.
A photographic material comprising a support and at least one hydrophilic colloid layer and including at least one light-sensitive silver halide emulsion layer, wherein at least one hydrophilic colloid layer comprises a surfactant compound which is a hydrophobically capped oligomeric acrylamide or pyrrolidone.
A compound of the general formula
Dependencies are inferred from the claim text.