Process for purification and isolation of diaminophenylindane

Details Process for purification and isolation of diaminophenylindane Process for purification and isolation of diaminophenylindane

C - Chemistry, Metallurgy

07

C

260/612.2

C07C 85/26 (1985.01) C07C 87/64 (1985.01)

Patent

CA 1199938

Process for Purification and Isolation of Diaminophenylindane Abstract of the disclosure Crystalline 5(6)-amino-1-(4'-aminophenyl)-1,3,3-trimethylindane is made by crystallizing the diamino reaction mass from a toluene/ heptane solution. The material has been previously purified through a combination of acetic acid washing and treatment with acidic clay. The diamino material, also known as DAPI, is a potential stabilizer, curing agent, and one of the monomers used to produce polyimide resins.

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