METHOD FOR SIMULTANEOUSLY PREPARING IRON OXIDE RED PIGMENT AND AROMATIC AMINE

• Main Authors: DUAN, Weidong, WEI, Yu, ZHANG, Guofu
• Format: Patent
• Language: English; French; German
• Published: 22.02.2023
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The present disclosure provides a method for simultaneously preparing an iron oxide red pigment and an aromatic amine. In the method, an aromatic nitro compound and ferrous iron are first used to prepare an iron oxide red seed crystal under the action of a catalyst, and then iron powder is used to r...