Flameproofing dispersions containing phosphoric acid derivatives

As a flameproofing composition for regenerated cellulose, a fine dispersion of a flameproofing agent in water, said flameproofing agent being a compound of the formula, ##STR62## in which each R, independently, is a radical --OR.sub.1 (a) or ##STR63## or two moieties R bound to the same phosphorus atom form a radical (c), ##STR64## and each of the other two moieties R, independently, is a radical (a) or (b), or the other two moieties R bound to the same phosphorus atom form a second radical (c), independent from the first radical (c);

• each of X.sub.1, X.sub.2, Y and Z, independently, is oxygen or sulphur;
• n is zero or 1;
• A is a radical (a) or ##STR65## each R.sub.1, independently, is methyl;
• ethyl or propenyl, each unsubstituted or substituted by 1 to 3 halo substituents or by a (C.sub.1-6) alkoxy group;
• (C.sub.3-12) alkyl or (C.sub.4-12) alkenyl, each unsubstituted or substituted by 1 to 4 halo substituents;
• (C.sub.5-8) cycloalkyl or (C.sub.5-8) cycloalkyl (C.sub.1-4) alkyl containing a total of 7 to 9 carbon atoms, each unsubstituted or substituted by 1 or 2 halo substituents;
• phenyl, unsubstituted or substituted by 1 to 5 halo substituents or by 1 to 3 substituents selected from (C.sub.1-3) alkyl and (C.sub.1-3) alkoxy;
• or phenyl (C.sub.1-4) alkyl, unsubstituted or substituted aromatically by 1 to 5 halo substituents or by 1 to 3 substituents selected from (C.sub.1-3) alkyl and (C.sub.1-3) alkoxy;
• each R.sub.2, independently, is (C.sub.1-4) alkyl;
• cyclohexyl;
• benzyl;
• or phenyl, unsubstituted or substituted by 1 or 2 chloro substituents of which only one can occupy or ortho-position, by a bromo substituent in the para-position, or by 1 or 2 substituents selected from (C.sub.1-3) alkyl and (C.sub.1-3) alkoxy, the aggregate of the carbon atoms thereof not exceeding 3;
• each R.sub.3, independently, is (C.sub.1-4) alkyl or hydrogen;
• or any R.sub.2 and R.sub.3, independently, together with the nitrogen atom to which they are bound, form a 5- or 6-membered, saturated heterocyclic ring which may contain as a ring member an oxygen or sulphur atom, or a second nitrogen atom to which is bound a (C.sub.1-4) alkyl group;
• each R.sub.4 and R.sub.5, independently, is hydrogen;
• (C.sub.1-4) alkyl;
• CH.sub.2 Cl;
• CH.sub.2 Br or phenyl;
• or any R.sub.4 and R.sub.5, independently, together with the carbon atom to which they are bound, form a cyclohexylidene, cyclohexenylidene or 3,4-dibromocyclohexylidene ring;
• each R.sub.6 and R.sub.8, independently, is hydrogen or (C.sub.1-4) alkyl;
• each R.sub.7, independently, is hydrogen or methyl, R.sub.9 is methyl;
• ethyl, unsubstituted or substituted by a halo substituent;
• propyl, unsubstituted or substituted by 1 or 2 halo substituents;
• (C.sub.4-12) alkyl, unsubstituted or substituted by 1 to 3 halo substituents;
• cyclohexyl;
• benzyl;
• or phenyl, unsubstituted or substituted by 1 or 2 substituents selected from (C.sub.1-3) alkyl and (C.sub.1-3) alkoxy, the aggregate of the carbon atoms thereof not exceeding 3, by 1 or 2 chloro substituents, by 1 or 2 chloro substituents and by 1 or 2 substituents selected from (C.sub.1-3) alkyl and (C.sub.1-3) alkoxy, the aggregate of the carbon atoms thereof not exceeding 3, by a bromo substituent in the para-position or by a bromo substituent in the para-position and by 1 or 2 substituents selected from (C.sub.1-3) alkyl and (C.sub.1-3) alkoxy, the aggregate of the carbon atoms thereof not exceeding 3;
• R.sub.10 is hydrogen;
• methyl;
• ethyl, unsubstituted or substituted by a halo substituent;
• propyl, unsubstituted or substituted by 1 or 2 halo substituents;
• (C.sub.4-12) alkyl, unsubstituted or substituted by 1 to 3 halo substituents;
• cyclohexyl;
• benzyl or phenyl;
• or R.sub.9 and R.sub.10, together with the nitrogen atom to which they are bound, form a 5- or 6-membered, saturated heterocyclic ring which may contain as a ring member an oxygen or sulphur atom, or a second nitrogen atom, to which is bound a (C.sub.1-4) alkyl group,
• with the provisos that:
• (i) when one or more of X.sub.1, X.sub.2 and Y is oxygen, then Z can only be oxygen,
• (ii) when X.sub.1 and Y are both oxygen, then only up to 2 of the moieties R can be a radical (a),
• (iii) when there are more than 2 radicals (a) in the molecule, only up to 2 of them can be methoxy,
• (iv) when Z is oxygen and n is zero, only one radical (c) can be present in the molecule,
• (v) when X.sub.1 or Y is oxygen, then R.sub.2 in any radical (b) attached to that same phosphorus atom as the oxygen atom is other than alkyl,
• (vi) when two radicals (b) are attached to a phosphorus atom and X.sub.1 or Y attached to that same phosphorus atom is sulphur, then both of the moieties R.sub.2 in these radicals (b) are (C.sub.1-4) alkyl,
• (vii) when n is 1, or when n is zero and R.sub.2 in any radical (b) is (C.sub.1-4) alkyl, any R.sub.3, or R.sub.3 in that same radical (b), respectively, is other than hydrogen,
• (viii) at least one of R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 in any radical (c) is other than hydrogen,
• (ix) when each of R.sub.4 and R.sub.5, independently, in any radical (c) is CH.sub.2 Cl or CH.sub.2 Br or both R.sub.4 and R.sub.5, together with the carbon atom to which they are bound form one of the rings indicated above, each of R.sub.6, R.sub.7 and R.sub.8 in the same radical (c) is hydrogen,
• and (x) when each of X.sub.1 and Y is oxygen, each of R.sub.4 and R.sub.5, independently, in any radical (c) is CH.sub.2 Cl or CH.sub.2 Br or both R.sub.4 and R.sub.5, together with the carbon atom to which they are bound, form one of the rings indicated above.