申请人:Yamada Chemical Co., Ltd.
公开号:US04808567A1
公开(公告)日:1989-02-28
Disclosed herein are novel divinyl compounds represented by the formula (I): ##STR1## and a recording-material prepared by utilizing the divinyl compounds. The present divinyl compound is in itself almost colorless, extremely stable in the atmosphere and develops rapidly blakish color by a developer. The color image given by the present divinyl compound is excellect in light-resistance and moisture-resistance and the letters developed can be read by an optical letter-reading apparatus or a barcord reading apparatus.
本文揭示了一种新颖的二乙烯化合物,其化学式表示为(I):##STR1##以及利用这些二乙烯化合物制备的记录材料。这种二乙烯化合物本身几乎无色,在大气中极其稳定,并通过显影剂迅速变为深灰色。由这种二乙烯化合物产生的彩色图像在耐光性和耐湿性方面表现出色,并且可通过光学文字阅读设备或条形码阅读设备读取开发的文字。