Interfacial method of preparing ester-substituted diaryl carbonates

Interfacial method of preparing ester-substituted diaryl carbonates

  • CN 1,556,785 A
  • Filed: 06/28/2002
  • Published: 12/22/2004
  • Est. Priority Date: 07/24/2001
  • Status: Active Application
First Claim
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1. method for preparing the diaryl carbonate that ester replaces, described method is included in the two-phase system of organic solvent and water, phenol photoreactive gas and phase-transfer catalyst that ester is replaced contact for some time, the pH value that keeps water in whole contact process is for about at least 9.3, and the consumption of described phosgene is that the phenol about 0.95 of every mole of described ester replacement is to about 1.20 moles.

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