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Solvent for chromogenic dye-precursor material for pressure- sensitive recording paper sheet and pressure-sensitive recording paper sheet prepared by using the solvent
Solvent for chromogenic dye-precursor material for pressure- sensitive recording paper sheet and pressure-sensitive recording paper sheet prepared by using the solvent
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机译:用于压敏记录纸的显色染料前体材料的溶剂和使用该溶剂制备的压敏记录纸的溶剂
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摘要
Disclosed herein are a solvent for a chromogenic dye-precursor material for a pressure-sensitive recording paper sheet, comprising (1) 30 to 80% by weight of p-monoisopropylbiphenyl or a biphenyl mixture of not less than 80% by weight of p-monoisopropylbiphenyl, not more than 20% by weight of m-monoisopropylbiphenyl and not more than 10% by weight of diisopropylbiphenyl, and (2) 70 to 20% by weight of diisopropylnaphthalene or a naphthalene mixture of not less than 97% by weight of diisopropylnaphthalene, not more than 1% by weight of monoisopropylnaphthalene and not more than 2% by weight of triisopropylnaphthalene, and a pressure-sensitive recording paper sheet prepared by using the solvent.
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