Process for making flame retardant material

Details Process for making flame retardant material Process for making flame retardant material

1974-07-22

1976-05-04

Husack, Ralph

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

252 81, 423300, 423302, 427384, 427394, 427395, 427396, 428270, 428272, 428310, 428480, 428921, C09K 328

Patent

active

039550290

ABSTRACT:
The new product, a Cl.sub.3 P=N--N=PCl.sub.3 + NH.sub.3 reaction product, has been found to be an excellent flameretardant for material made from cellulose such as cotton, paper and sponge; polyester, wool and blends thereof. Conveniently the material can be treated with an aqueous solution containing a sufficient amount of the product 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 product 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: 3012908 (1961-12-01), Bilger
patent: 3193571 (1965-07-01), Bilger
patent: 3685974 (1972-08-01), Silvestri
patent: 3754982 (1973-08-01), Chapin
patent: 3799738 (1974-03-01), Wagner
becke-Goehring et al., Z. Anorg. Allgem. Chemie, Vol. 333 (1964), p. 128.

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