Dyestuff-containing microscopic capsule suspension for record materials, containing in microscopic capsules a lactone family dyestuff represented by the general formula (1):
wherein a, b, c and d are each a carbon atom oreither one or two atoms of said a, b, c and d are nitrogen atoms and the remaining are carbon atoms, said a, b, c and d may have one or two substituent groups, adjacent a-b, b-c orc-d bond may form another ring, X and Y represent individually a benzene, naphthalene or aromatic heterocyclic ring which may include one or more substituent groups, and X and Y may be the same or different and may be coupled together to form a ring; and a metal ion sequestering agent in the capsules or a liquid medium in which the capsules is suspended.
用于记录材料的含
染料微胶囊悬浮液,在微胶囊中含有由通式(1)表示的内酯族
染料:其中 a、b、c 和 d 各为一个碳原子,所述 a、b、c 和 d 中的一个或两个原子为氮原子,其余为碳原子,所述 a、b、c 和 d 可具有一个或两个取代基,相邻的 a-b、b-c 或 c-d 键可形成另一个环,X 和 Y 分别代表苯环、
萘环或芳香杂环,其中可包括一个或多个取代基,X 和 Y 可相同或不同,并可耦合在一起形成一个环;以及胶囊或悬浮胶囊的液体介质中的
金属离子
螯合剂。