Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1973-05-23
1977-05-17
Higel, Floyd D.
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8 86, 8194, 8 85B, 162162, 260153, 260158, 260162, 260167, 260173, 260175, 260182, 260183, 260184, 260187, D21D 300, D21H 146, D21H 380
Patent
active
040239241
ABSTRACT:
Concentrated, liquid preparations of metal-free direct azo dyes which contain in each instance 1 part by weight of dye, 1 to 8 parts by weight of water, and 0.5 to 5 or preferably 0.5 to 2 parts by weight of an amide are useful for dyeing paper in the stock and for dyeing paper sheet.
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patent: 3701624 (1970-08-01), Franklin
Kern, American Dyestuff Reporter, vol. of May 15, 1961, pp. 45-52.
Neilson, Du Pont Magazine, May-June, 1971, pp. 21-23.
Zimmerman et al., American Dyestuff Reporter, vol. of Jan. 26, 1948, pp. 47-51 and 58.
Frei Alfred
Schoefberger Georg
Schweizer August
Higel Floyd D.
Kassenoff Melvyn M.
Sandoz Ltd.
Sharkin Gerald D.
Vila Richard E.
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