Title:
SILVER CARBOXYLATE NANOPARTICLE COMPOSITIONS WITH PHOSPHORIC ACID ESTER SURFACE MODIFIERS
Document Type and Number:
WIPO Patent Application WO2001059519
Kind Code:
A3
Abstract:
There is disclosed an oxidation-reduction imaging forming composition comprising an aqueous based dispersion of (i) nanoparticulate silver carboxylate particles having on the surface of the particles a surface modifier which is a phosphoric acid ester and (ii) an organic reducing agent. In particular, the surface modifiers can be mixtures of mono- and di-esters of orthophosphoric acid and hydroxyl-terminated, oxyethylated long-chain alcohols or oxyethylated alkyl phenols or derivatives thereof. Also disclosed are various compositions including the dispersions including oxidation-reduction imaging forming compositions, thermographic elements and photothermographic compositions and elements. The preferred carboxylate is a silver salt of a long chain fatty acid such as silver behenate. A media milling method and a controlled precipitation method of making the dispersions are also disclosed.
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Inventors:
LELENTAL MARK
DICKINSON DAVID A
WAKLEY JAMES L
OREM MICHAEL W
GHYZEL PETER J
DICKINSON DAVID A
WAKLEY JAMES L
OREM MICHAEL W
GHYZEL PETER J
Application Number:
PCT/US2001/003896
Publication Date:
March 14, 2002
Filing Date:
February 07, 2001
Export Citation:
Assignee:
EASTMAN KODAK CO (US)
International Classes:
G03C1/498; B41M5/323; (IPC1-7): G03C1/498
Foreign References:
| EP1094362A1 | 2001-04-25 | |||
| US3699114A | 1972-10-17 | |||
| US3887597A | 1975-06-03 |
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