Phosphorus-containing imide resins

Details Phosphorus-containing imide resins Phosphorus-containing imide resins

1981-07-30

1983-07-26

Brust, Joseph Paul

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548415, C07D20726, C07D20934

Patent

active

043955576

ABSTRACT:
Bis- and tris-imides derived from tris(m-aminophenyl) phosphine oxides by reaction with maleic anhydride or its derivatives, and addition polymers of such imides, including a variant in which a mono-imide is condensed with a dianhydride and the product is treated with a further quantity of maleic anhydride. Such monomers or their oligomers may be used to impregnate fibers and fabrics which when cured, are flame resistant. Also an improved method of producing tris(m-aminophenyl) phosphine oxides from the nitro analogues by reduction with hydrazine hydrate using palladized charcoal or Raney nickel as the catalyst.

REFERENCES:
patent: 4166168 (1979-08-01), D'Alelio
patent: 4168360 (1979-09-01), D'Alelio
patent: 4168366 (1979-09-01), D'Alelio
patent: 4168367 (1979-09-01), D'Alelio
patent: 4276344 (1981-06-01), Frosch
patent: 4316843 (1982-02-01), Waitkus et al.
patent: 4316844 (1982-02-01), Waitkus et al.
patent: 4316845 (1982-02-01), D'Alelio et al.
patent: 4321198 (1982-03-01), D'Alelio et al.

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