Thermal recording medium
专利汇可以提供Thermal recording medium专利检索，专利查询，专利分析的服务。并且PURPOSE:To obtain a satisfactory color-forming sensitivity and a suitability for a high-speed recording and to inhibit sublimating properties to the utmost by incorporating a 4,4'-bisalkoxy biphenyl compound having a specific melting point as a color-forming accelerator. CONSTITUTION:In thermal recording paper mainly composed of a leuco dye and an organic acid reacting with the leuco dye to produce a color, 4,4'- bisalkoxy biphenyl compound shown by a formula (where R represents 3-6 C alkyl group having at least one secondary carbon atom or tertiary carbon atom) is contained as a color-forming accelerator. The 4,4'-bisalkoxy biphenyl compound can be easily obtained by dehydrating corresponding alcohol and 4,4'-biphenol or by an ether synthesizing method in which a corresponding halide, such as chloride and bromide, is caused to react with the sodium salt or potassium salt of the 4,4'-biphenol. The aforesaid 4,4'-bisalkoxy biphenyl compound has a melting point ranging 60-180 deg.C, therefore having slow sublimating properties and a color-forming accelerating effect superior to such a material as fatty acid amide.，下面是Thermal recording medium专利的具体信息内容。
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