Polyimides prepared from azo-bisanhydrides of trimellitic anhydr

Details Polyimides prepared from azo-bisanhydrides of trimellitic anhydr Polyimides prepared from azo-bisanhydrides of trimellitic anhydr

1973-11-09

1976-11-02

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75N, 260 78TF, 260152, C08G 6340, C08G 7310

Patent

active

039896692

ABSTRACT:
A new azo-bisanhydride made by condensing 2 moles of 4-chloroformylphthalic anhydride (4-mono acid chloride of trimellitic anhydride), 1 mole of hydrazine, and 1 mole of a ketone (acetone) having the formula: ##SPC1##
Such compounds are useful as dyes and as monomers capable of copolymerizing thus introducing the azo chromophore group into the backbone of a polymer.

REFERENCES:
patent: 3182073 (1965-05-01), Loncrini
patent: 3440215 (1969-04-01), Holub
patent: 3453292 (1969-07-01), Izumi et al.
patent: 3526618 (1970-09-01), Horstmann et al.
patent: 3632608 (1972-01-01), Holub

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