Flame retardant cellulosic materials

Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond

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428272, 428290, 428393, 428537, 428541, 428543, 428921, 252 81, 252 86, 2605136, 260456A, 260458R, 427390D, 106 15FR, C09D 518, B32B 3300

Patent

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041073738

ABSTRACT:
Cellulosic materials such as paper, wood, cotton, rayon and the like are rendered flame retardant by the intimate association therewith of an effective flame retardant amount of a reaction product of aqueous solution of sulfamic acid and an alkylene oxide e.g., ethylene oxide. Amounts of said reaction product of at least, and preferably in excess of, 0.5 percent by weight are generally effective to render the cellulosic material flame retardant. Preferably the reaction product is rendered neutral before or after application to the cellulosic material in order that the material be rendered noncorrosive and nonirritating in nature.

REFERENCES:
patent: 2142115 (1939-01-01), Cupery
patent: 2422730 (1947-06-01), Hoffman
patent: 2757102 (1956-07-01), Wooding et al.
patent: 2935471 (1960-05-01), Aarons et al.
patent: 3896250 (1975-07-01), Miller

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