摘要 |
<p>Record material of the type in which the color forming reaction is between an electron donating chromogenic material and an electron accepting color developer uses one or more metal/oximes as the color developer. Preferred oximes are monoximes, especially salicylaldoxime and its ring substituted derivatives, and dioximes such as dimethylglyoxime and mioxime and the preferred metal is zinc. Metal oximate salts can be used especially the salicylaldoximate, diphenylglyoximate and benzaldoximates of zinc.</p> |