申请人:Burleva Lilia P.
公开号:US20090081578A1
公开(公告)日:2009-03-26
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.