Poly phosphinoguanidine compounds

Details Poly phosphinoguanidine compounds Poly phosphinoguanidine compounds

1985-12-30

1988-04-19

Sutto, Anton H.

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

Organic compounds

Amino nitrogen containing

528399, 428325, C07F 944

Patent

active

047391154

ABSTRACT:
Highly fire resistant composites or laminates particularly applicable as structural components in aircraft, e.g. in the engine nacelle, as part of the acoustic panel-fire wall structure, and capable of withstanding a 2,000.degree. F. flame temperature, comprising incorporating an additive in the form of a polymeric phosphorylated amide, into a resin, e.g., a polyimide or an epoxy resin, such additive being soluble in the resin. The resulting resin containing the additive is then applied to or impregnated into a substrate such as glass fiber cloth or graphite fiber, to form a composite structure which is then cured. The resulting cured composite when subjected to high temperatures of the order of, e.g., a 2,000.degree. F. flame temperature, forms a resin char of reduced thermal conductivity which holds the fibers of the laminate together and maintains the structural stability and integrity of the laminate.

REFERENCES:
patent: 4006203 (1977-02-01), Chance et al.
patent: 4582932 (1986-04-01), Byrd et al.

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