Process for purification and isolation of diaminophenylindane

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

1983-02-11

1984-06-12

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564437, C07C 8526

Patent

active

044543476

ABSTRACT:
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 a polyimide resin.

REFERENCES:
patent: 2048781 (1936-07-01), Craig
patent: 4096123 (1978-06-01), Molloy

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