• 专利标题:   Preparation of dihydroxy dicyclohexylpropane involves reacting bisphenol A, dihydric alcohol, epoxy chloropropane in presence of catalyst prepared using pseudo-boehmite.
  • 专利号:   CN112390931-A
  • 发明人:   ZHAO Z
  • 专利权人:   BENYUAN FINE CHEM ENVIRONMENTAL PROTECTI
  • 国际专利分类:   C08G059/06, C08K003/00, C08K003/04, C08K003/22, C08K003/28, C08K003/32
  • 专利详细信息:   CN112390931-A 23 Feb 2021 C08G-059/06 202137 Pages: 8 Chinese
  • 申请详细信息:   CN112390931-A CN11233327 06 Nov 2020
  • 优先权号:   CN11233327

▎ 摘  要

NOVELTY - Preparation of dihydroxy dicyclohexylpropane involves preparing catalyst using 30-80 wt.% pseudo-boehmite, 10-40 wt.% aluminum hydroxide, 1-5 wt.% alkali metal, 1-5 wt.% phosphoric acid, 1-3 wt.% noble metal and 0.5-1.5 wt.% graphene, adding 10-100 wt.% bisphenol A into a metering pump, pressurizing, mixing with high pressure hydrogen metered by a flow control instrument, mixing, adding 10-100 wt.% dihydric alcohol and 1-100 wt.% epoxy chloropropane in a closed tube, preheating to 80 degrees C, adding 1-100 wt.% prepared catalyst and 1-100 wt.% curing agent, heating while stirring, and keeping the reaction system at 100-200 degrees C and hydrogen pressure at 3-5 MPa. USE - Preparation of dihydroxy dicyclohexylpropane. ADVANTAGE - The method produces dihydroxy dicyclohexylpropane having excellent weather resistance, corona resistance, leakage resistance, high dielectric strength, chemical resistance, UV resistance, and is manufactured economically with high yield.