Triiodide-phosphoric acid stain and method for cellulose fiber e

Details Triiodide-phosphoric acid stain and method for cellulose fiber e Triiodide-phosphoric acid stain and method for cellulose fiber e

1989-12-22

1990-12-18

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

Inorganic dye

8633, 8919, 162162, 162176, 2524081, 436101, 436103, C09B 6700

Patent

active

049783645

ABSTRACT:
A triiodide-phosphoric acid stain when applied to either moist or dry fiber samples produces a range of colors indicative of the fiber species and the degree of refining of the fiber. The stain is made from an aqueous triiodide solution of about 0.6M in potassium iodide and about 0.1M in iodine and is mixed with an acid solution about 77 percent by weight of phosphoric acid in a ratio of about 1 to 100 v/v of triiodide to acid just prior to its application to the fiber samples to be stained.

REFERENCES:
patent: 3984341 (1976-10-01), Haschke et al.
patent: 4088597 (1978-05-01), Morlock et al.
patent: 4444756 (1984-04-01), Schlussler et al.
patent: 4487752 (1984-12-01), Shimizu et al.
patent: 4676931 (1987-06-01), Travis

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