Bis(maleimido) phenoxy phenylphosphine oxide

Details Bis(maleimido) phenoxy phenylphosphine oxide Bis(maleimido) phenoxy phenylphosphine oxide

1991-08-27

1992-03-31

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07F 902

Patent

active

051010372

ABSTRACT:
Bis(maleimido) phenoxy phenylphosphine oxide monomers are formed by reacting a bis(aminophenoxyphenyl) phosphine oxide, e.g., bis(3-aminophenoxy) triphenylphosphine oxide, with maleic anhydride forming the intermediate bismaleamic acid species which is cyclodehydrated to the desired bismaleimido compound. The improved properties include: (1) a low melting point (T.sub.m =90.degree. C.); (2) a wide processing temperature range (T.sub.cure =210.degree. C.); and (3) a high T.sub.g value of 400.degree. C.; and (4) a high char yield which suggests flame resistance.

REFERENCES:
patent: 4276344 (1981-06-01), Varma et al.
patent: 4973631 (1990-11-01), McGrath et al.
CA 111:39992k Synthesis of Polyimidazoles via Aromatic Nucleophilic Displacement, Connell et al., 1989, p. 9.
CA 93:8757t Thermostable Heterocyclic Polymers, Chernikhov et al., 1978, p. 18.

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