Phosphonic acid salts, their production and their use for...

Details Phosphonic acid salts, their production and their use for... Phosphonic acid salts, their production and their use for...

C - Chemistry, Metallurgy

07

F

117/34, 260/543.

C07F 9/38 (2006.01) C07C 279/24 (2006.01) C08K 5/5317 (2006.01) D06M 13/447 (2006.01) D21H 21/34 (2006.01)

Patent

CA 1334675

Novel phosphonic acid salts produced from ethane- or methanephosphonic acid, dicyandiamide and/or guanidine and optionally ammonia and corresponding to the formula Image wherein n, p, q, t and y are each 1 or 2, are particularly suitable for fireproofing organic fibre materials. Synthetic and/or cellulose-containing fibre materials are treated with an aqueous solution of the phosphonic acid salts and are then dried preferably at 60 to 200°C. The applied phosphonic acid salts impair only negligibly the textile- mechanical properties of the treated fibre materials, especially of the cellulose-containing fibre materials dried at 120 to 150°C.

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