Process for flameproofing organic fibrous material with phosphonic acid salts
AssigneeCiba-Geigy Corporation
InventorsHermann Nachbur, Peter Rohringer
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Abstract
A process for the non-permanent flameproofing of organic fibrous materials with monoammonium or monoalkali metal salts of an alkylphosphonic acid is claimed. Monoammonium methyl- and ethylphosphonate are also claimed. The claimed process is suitable for a very wide variety of fibrous materials. The flame-retardants used according to the invention have no corrosive action and have excellent compatability with most other textile finishing agents.
Claims9
A process for flameproofing organic fibrous material which comprises treating said material with an aqueous solution containing 25 to 500 g/l of a phosphonic acid salt of the formula ##STR2## in which R is methyl or ethyl and M.sup..sym. is an alkali metal cation or an ammonium cation, and drying it.
Dependencies are inferred from the claim text.