COLOR DEVELOPING COMPOUND,申请号JP19820070293-传众专利搜索

COLOR DEVELOPING COMPOUND

申请公布号：JPS58188842(A)

申请号：JP19820070293

申请日期：1982.04.28

申请公布日期：1983.11.04

申请人：

SHINNITSUSOU KAKOU KK

发明人：YAHAGI MASAKICHI;IGAKI TETSUO;KINOSHITA MASAAKI;YANAGIDA MITSUHIRO;ENOTANI MASASHI

分类号：C07C69/88;B41M5/333;D06P1/651

主分类号：C07C69/88

摘要：NEW MATERIAL:Pentamethylene bis-p-hydroxybenzoate of formula. USE:A color developing agent useful for the heat-sensitive color developing recording material such as heat-sensitive recording paper, electro thermo-recording paper, etc. It exhibits color developing property at a lower temperature than bisphenol A, etc., and is a white crystalline substance having a melting point of 130-131.5 deg.C. It is used in combination with a colorless or colored color-developing dye which develops its color with an electron acceptor. PROCESS:The compound of formula can be prepared, e.g. by reacting 1,5-pentanediol or 1,5-dihalogenopentane with p-hydroxybenzoic acid, its salt, its hydrochloride or its ester optionally in a solvent such as toluene under heat refluxing in the presence of p-toluenesulfonic acid, triethylamine, etc.