Method for insitu coloring crosslinked cellulosic materials

Details Method for insitu coloring crosslinked cellulosic materials Method for insitu coloring crosslinked cellulosic materials

1985-10-18

1986-10-07

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Ureas, thioureas, pseudoureas, or pseudothioureas

8181, 8185, 8186, C09B 6700

Patent

active

046157085

ABSTRACT:
Cellulosic materials, such as cotton fabrics, can be colored insitu by first treating the fabric with N-phenyldiethanolamine and a crosslinking agent for cellulose, such as dimethylol dihydroxyethyleneurea. After the fabric has been cured it is then colored by treating with sufficient concentrations of nitrous acid to form the colored nitroso derivative of the tertiary aromatic amine. The colors obtained are shades of green and yellow which are determined by: concentration of the N-phenyldiethanolamine; type of crosslinking agent; strength of the nitrous acid, and reaction times.

REFERENCES:
patent: 3788804 (1974-01-01), Harper et al.
patent: 3807946 (1974-04-01), Harper et al.
patent: 3824074 (1974-07-01), Bugaut et al.
patent: 3853459 (1974-12-01), Blanchard et al.
patent: 4023926 (1977-05-01), Bugaut et al.
Morrison and Boyd, Organic Chemistry, 1959, pp. 542-543, 562-565, Allyn and Bacon, Inc.

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