The invention relates to a phthalide compound of general formula (I), processes for its production, and recording materials utilizing the compound.
(wherein R1 and R3 independently represent an alkyl group, a cycloalkyl group or an aralkyl group ; R2 and R4 independently represent methyl or phenyl ; R5 and R6 independently represent an alkyl group, a cycloalkyl group, an aralkyl group or an aryl group ; R7 represents hydrogen, an alkyl group, an alkoxy group or a cyclo-alkoxy group ; R5 and R6 may, taken together with the adjacent nitrogen atom, form a heterocyclic group).
Recording materials utilizing the phthalide compound of the invention are suited for reading with any OCR equipped with a light source having an emission wavelength within the range of 570-780 nm.
本发明涉及通式(I)的
邻苯二甲酸酯化合物、其生产工艺以及利用该化合物的记录材料。
(其中 R1 和 R3 分别代表烷基、环烷基或芳烷基;R2 和 R4 分别代表甲基或苯基;R5 和 R6 分别代表烷基、环烷基、芳烷基或芳基;R7 代表氢、烷基、烷氧基或环烷氧基;R5 和 R6 可与邻近的氮原子一起形成杂环基)。
使用本发明
邻苯二甲酸盐化合物的记录材料适用于任何配备有发射波长在 570-780 纳米范围内的光源的光学识别器的读取。