Preparation and application of 2,2′-diaminoethylene glycol diphenyl ether_Kain Industrial Additive

Background and overview[1-3] 2,2′-Diaminoethylene glycol diphenyl ether is a white crystalline powder with a melting point of 130-132°C. It is mainly used as the diazotization component for the synthesis of high-grade organic pigment yellow C.I.Pigment Yellow 180. Preparation[1-2] Report 1, A preparation method of 2,2’-diaminoethylene glycol diphenyl ether, the synthesis route is: Add 45g of 1,2-bis(2-nitrophenoxy)ethane, 1.3g of nickel catalyst, 1.8g of activated carbon, and 600ml…

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