| 摘要 |
PURPOSE:To obtain a pressure- or heat-sensitive recording paper having excellent resistance to light and water by using a specific fluoran derivative as an electron donative chromogenic substance for the pressure- or heat-sensitive recording paper. CONSTITUTION:One or two or more of fluoran derivatives of the formula (where R<1> is a C1-C8 alkyl, a C3-C10 alkoxyalkyl, a C2-C8 alkenyl, cycloalkyl, aralkyl, or phenyl, R<2> is a C1-C8 alkyl, a C3-C10 alkoxy, a C2-C8 alkenyl or aralkyl, R<1> and R<2> may form -(CH2)p- group in combination, and R<3> is phenyl, phenylalkyl, or cycloalkyl) are used, together with other chromogenic substances as needed, to manufacture a pressure- or heat-sensitive recording paper by an usual method. |
