Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1972-08-31
1976-01-13
Thomas, Jr., James O.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260 2P, 260552R, 252 81, 428276, C07C12724
Patent
active
039325024
ABSTRACT:
The subject of the invention is a process for the manufacture of water-soluble condensation products of hydroxymethylphosphonium compounds and thiourea or biuret, characterised in that (a) one mol of a tetrakis-(hydroxymethyl)-phosphonium compound is condensed with (b) 0.02 to 0.5 mol, preferably 0.1 to 0.3 mol, of optionally methylolated thiourea or biuret at 40.degree. to 120.degree.C, optionally in the presence of formaldehyde or a formaldehyde-releasing agent and optionally in the presence of an inert organic solvent, the condensation is optionally thereafter continued at temperatures of 100.degree. to 150.degree.C and, if appropriate, free hydroxyl groups are etherified at least partially with at least one alkanol with 1 to 4 carbon atoms and, if appropriate, the salts of the condensation products are converted into the corresponding hydroxides. In addition to the preferred molar ratio range of 1:0.1 to 0.3, the range of 0.2 to 0.5 is also advantageous.
The condensation products are used for flameproofing organic fibre material, especially textiles.
Maeder Arthur
Nachbur Hermann
Almaula Prabodh I.
Breitenstein G.
Ciba-Geigy Corporation
Kolodny Joseph G.
McC. Roberts Edward
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