Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified backing or protective layer containing
Reexamination Certificate
2006-12-12
2006-12-12
Le, Hoa Van (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified backing or protective layer containing
C430S531000, C430S617000, C430S618000, C430S619000, C430S620000
Reexamination Certificate
active
07147998
ABSTRACT:
Thermally developable imaging materials have an outermost protective layer that is composed of one or more hydrophilic film-forming components. The predominant film-forming component is a negatively-charged latex polymer that has negatively-charged ionic groups other than carboxy groups. The latex polymer is present as latex particles that have been prepared in the presence of a nonionic stabilizer in an amount of at least 0.5% (by weight) that has an HLB value of 7 to 20. The nonionic stabilizer becomes associated with the latex polymer particles. Both thermographic and photothermographic materials can be prepared with such protective layers.
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Hammerschmidt Jon A.
Leon Jeffrey W.
Eastman Kodak Company
Le Hoa Van
Leichter Louis M.
Tucker J. Lanny
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