Verfahren zur Herstellung von Hydroxyaethern durch Reaktion von Epoxyverbindungen mit Phenolen in Gegenwart eines Katalysators

摘要

Curable phenyl hydroxy-ethers containing at least one unit of formula are prepared by reacting a polyepoxide with a phenol in presence of AR3, wherein A is P, As, Sb or Bi, one R is hydrocarbyl and the others are H or hydrocarbyl. In examples, resins are obtained by reacting (i) bisphenol A with its diglycidyl ether in presence of Bu3N, Ph3P or trilaurylphosphine, (ii) bisphenol A with its diglycidyl ether and with tetrabromo-bisphenol A in presence of Ph3P; the products may be cured with dicyandiamide. Other curing agents are listed in the Specification.ALSO:Curable phenyl hydroxy-ethers containing at least one unit of formula are prepared by reacting an epoxide with a phenol in presence of AR3, wherein A is P, As, Sb or Bi, one R is hydrocarbyl and the others are H or hydrocarbyl.