Process for the manufacture of polycondensation products contain

Details Process for the manufacture of polycondensation products contain Process for the manufacture of polycondensation products contain

1975-05-13

1976-12-28

Levy, Donald

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Cellulose fibers

427381, 427382, 428277, D06M 1328, D06M 1562

Patent

active

039999416

ABSTRACT:
The subject of the invention is a process for the manufacture of polycondensation products from hydroxymethylphosphonium compounds, characterized in that at least one anhydrous tetrakis-(hydroxymethyl)-phosphonium salt or tetrakis-(hydroxymethyl)-phosphonium hydroxide is condensed with itself in an anhydrous medium, optionally using an acid catalyst and optionally in the presence of at least one inert organic solvent, at 100.degree. to 150.degree. C, preferably 120.degree. to 150.degree. C, the condensation being continued until 0.5 to 1.5 mols of water have been eliminated per 1 mol of phosphonium compound employed, free hydroxyl groups are, if appropriate, at least partially etherified with at least one alkanol with 1 to 4 carbon atoms, and that the salt of the polycondensation products are, where relevant, converted into the corresponding hydroxides.
The polycondensation products are used for the flameproofing of organic fibre material, especially textiles. Appropriately, the procedure followed is that an aqueous preparation is applied to these materials which contains at least 1) a polycondensation product of the indicated type and 2) a polyfunctional compound, and that the material thus treated are dried and subjected to a heat treatment.

REFERENCES:
patent: 3221057 (1965-11-01), Gordon et al.
patent: 3236676 (1966-02-01), Coates et al.

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