| 摘要 |
<p>HEAT-SENSITIVE COATING COMPOSITION WITH 4-AROMATIC AND HYDROXY SUBSTITUTED PIPERIDINE DERIVATIVE AND CYCLIC POLYKETO COMPOUND A heat-sensitive coating composition acquiring a stable color contrasting with the background color in selected regions that are heated to an elevated temperature. The coating composition comprises (1) a piperidine derivative substituted in the 4 position with an aromatic group and a hydroxyl group, (2) a cyclic polyketo compound reactive with the piperidine derivative to form a dye, and (3) polymeric binder means for binding the reactants to a substrate.</p> |
