Method for stabilizing brightened modacrylic fibers

Details Method for stabilizing brightened modacrylic fibers Method for stabilizing brightened modacrylic fibers

1977-09-06

1978-11-21

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 90, 8163, 8171, 8177R, 25230121, 25230125, 25230127, 260 457P, 260 458N, 260 458NT, D06P 138

Patent

active

041264126

ABSTRACT:
The method of preventing color-degrading interactions between certain optical brighteners and filaments made from a modacrylic polymer containing as a copolymer a halogenated ethylenically unsaturated monomer, the optical brightener preferably having the formula: ##STR1## where X and Y are basic groups selected from the group consisting of --NH.sub.2, --H(CH.sub.3).sub.2, and --N.sup.+ (CH.sub.3).sub.3 Z, where Z is selected from the group consisting of chloride, sulphate and bromide anions, n is 0 to 3, and R is an alkyl group containing 1 to 4 carbon atoms, wherein an aqueous liquid is applied to the filaments, the liquid containing 0.01 to 0.5 weight percent of a compound having the formula: ##STR2## wherein R is a member selected from the group consisting of an alkyl radical having 1 to 11 carbon atoms, a phenyl radical and an alkyl phenyl radical containing no more than eight carbon atoms.

REFERENCES:
patent: 3784511 (1974-01-01), Kirby
Venkataraman's "The Chemistry of Synthetic Dyes," vol. V, (Academic Press, 1971), pp. 549, 556, and 611-616, and 669.

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