2-\phenol（2,4′-HPSP）, a developer for thermo-sensitive record （paper）, was prepared from phenol and H2SO4 with pseudocumene as solvent. The effects of catalyst type, （catalyst） （amount） and reaction time on t...2-\phenol（2,4′-HPSP）, a developer for thermo-sensitive record （paper）, was prepared from phenol and H2SO4 with pseudocumene as solvent. The effects of catalyst type, （catalyst） （amount） and reaction time on the yield of 2,4′-HPSP were investigated. Under the optimum conditions, the content of 2,4′-HPSP was 37.52% in the product and the total yield was 95.9%(based on H2SO4). The crude product was purified successively with 2%methanol in o-dichlorobenzene and 30%methanol in water. The purity of the final （2,4′-）HPSP was 95.52%, and the total yield was 26.4%. The solvents used in the （purification） process could be recycled.展开更多
文摘2-\phenol（2,4′-HPSP）, a developer for thermo-sensitive record （paper）, was prepared from phenol and H2SO4 with pseudocumene as solvent. The effects of catalyst type, （catalyst） （amount） and reaction time on the yield of 2,4′-HPSP were investigated. Under the optimum conditions, the content of 2,4′-HPSP was 37.52% in the product and the total yield was 95.9%(based on H2SO4). The crude product was purified successively with 2%methanol in o-dichlorobenzene and 30%methanol in water. The purity of the final （2,4′-）HPSP was 95.52%, and the total yield was 26.4%. The solvents used in the （purification） process could be recycled.
