SOLVENT FOR CHROMOGENIC DYE-PRECURSOR MATERIAL FOR PRESSURE-SENSITIVE RECORDING PAPER SHEET AND PRESSURE-SENSITIVE RECORDING PAPER SHEET PREPARED BY USING THE SOLVENT

摘要

ABSTRACT OF THE DISCLOSURE:Disclosed herein are a substantially odorlesssolvent for a chromogenic dye-precursor material for apressure-sensitive recording paper sheet, which comprisesfrom 0 to 20% by weight of m-isopropylbiphenyl, from 40 to75% by weight of p-isopropylbiphenyl and from 5 to 40% byweight of diisopropyldiphenyl, and a pressure-sensitiverecording paper sheet comprising a colour-development sheetcoated with microcapsules containing a dye solution whichis composed of the chromogenic dye-precursor material andthe substantially odorless solvent, and a colour-developersheet.