Silver salts of long chain carboxylic acids are prepared from long chain carboxylic acids by sequential addition of at least two different alkali metal hydroxides, one of which is lithium hydroxide, followed by converting the mixture of alkali metal carboxylates to silver carboxylates. Photothermographic materials prepared from such silver carboxylates display improved D
min
aging with little if any affect on other sensitometric properties.
INFRARED FLUORESCENT COMPOSITION HAVING POLYVINYL ACETAL BINDER
申请人:Widzinski Thomas J.
公开号:US20130087740A1
公开(公告)日:2013-04-11
A composition is disclosed that includes a dye that fluoresces in the infrared region of the electromagnetic spectrum and a polyvinyl acetal binder. The weight ratio of the dye relative to the combined weight of the dye and binder is in a range of 0.001 to 0.025.
INK HAVING POLYVINYL ACETAL BINDER
申请人:Widzinski Thomas J.
公开号:US20130087741A1
公开(公告)日:2013-04-11
An ink is disclosed that includes a solvent, a dye that fluoresces in the infrared region of the electromagnetic spectrum and a polyvinyl acetal binder. The weight ratio of the dye relative to the combined weight of the dye and binder is in a range of 0.001 to 0.025.
ARTICLE PRINTED WITH INFRARED DYE
申请人:Widzinski Thomas J.
公开号:US20130089713A1
公开(公告)日:2013-04-11
A printed article is disclosed including a substrate and printed data that is not visible to the unaided eye. The printed data includes a dye that fluoresces in the infrared region of the electromagnetic spectrum and a polyvinyl acetal binder. The weight ratio of the dye relative to the combined weight of the dye and binder is in a range of 0.001 to 0.025.