Flame retardant product of the reaction of ammonia with phosphor

Details Flame retardant product of the reaction of ammonia with phosphor Flame retardant product of the reaction of ammonia with phosphor

1974-07-22

1976-12-28

Curtis, Allen B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

106 15FP, 252 81, 260551P, 427394, 428276, C07C12508, C07F 922, C09K 328

Patent

active

040001911

ABSTRACT:
Flame retardant protection has been demonstrated on cotton and on polyester-cotton materials by the product obtained from the reaction of cyanamide and PCl.sub.5 followed by reaction with anhydrous ammonia in excess of that required to react with the chlorine on the cyanamide and PCl.sub.5 intermediate product. Conveniently the material can be treated with an aqueous solution containing a sufficient amount of the new flame retardant compound and the material dried to make the material self extinguishing. Then the treated and dried material is cured at a sufficient temperature to bond the flame retardant to the material. Alternatively and usually preferably, the drying and curing can be accomplished as a single operation.

REFERENCES:
patent: 2782133 (1957-02-01), Vallette
patent: 3698854 (1972-10-01), Donaldson et al.
patent: 3776950 (1973-12-01), Mitsch
patent: 3882103 (1975-05-01), Beriger et al.
"Phosphorous-Nitrogen Compounds", Becke-Goehring et al., CA 72: 100655x (1970).
"Flame-Retardant, Phosphorous-Containing Condensation Products", Nachbur et al., CA 79: 20252t (1973).
"Imparting Flame Retardency to Cotton Knits", Moreau et al., CA 76: 128625u (1972).

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