Zirconium flame-resist treatment

Details Zirconium flame-resist treatment Zirconium flame-resist treatment

1976-07-09

1979-07-03

Smith, John D.

Coating processes

With post-treatment of coating or coating material

Liquid extraction of coating constituent or cleaning coating

8 17, 8128R, 252 81, 423464, 106 1826, 106 1828, 427353, 427354, 427389, 427390D, 427394, 427430R, 428921, D06M 1350

Patent

active

041600517

ABSTRACT:
The flame resistance of wool and other polyamide fibres is enhanced by depositing in the fibres a complexed zirconium compound formed with an organic chelating agent or a halide. From 0.5 to 5% of Zr (as ZrO.sub.2) is preferred and the zirconium should be in the form of an anionic complex and applied at a pH in the range 0.5 to 4. The complex can be applied by impregnation or exhaustion techniques or may be formed in situ in the fibres. Dyes including acid, premetallized and reactive dyes can be applied at the same time as the zirconium complex. Particularly preferred complexes include fluorozirconates, chlorozirconates and oxalic and citric acid complexes. Fluorocarbon and other oil- or water-repellent finishes are compatible with the zirconium complex.

REFERENCES:
patent: 2424262 (1947-07-01), Wainer
Blumenthal, Rayon and Synthetic Textiles, "Dyeing and Finishing," pp. 87-89, 10-1948.

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