Dyeing process using a sequestrating agent

Details Dyeing process using a sequestrating agent Dyeing process using a sequestrating agent

1979-04-24

1980-11-04

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Phosphorus-containing

8685, D06P 110, D06P 1667

Patent

active

042317495

ABSTRACT:
Dyeing with a dyestuff containing a metal or from a bath in the presence of one or more metallic elements, especially alkaline-earth or heavy metals, is carried out in the presence of a sequestrating agent or sequestrant. According to the invention the sequestrant is a derivative of a phosphonic acid having no effect on the physical-chemical characteristics of the dyestuff which is used and is preferably a salt of a hydroxy-lower-alkane-phosphonic acid.

REFERENCES:
patent: 3303139 (1967-02-01), Blaser et al.
patent: 3366676 (1968-01-01), Dyer
patent: 3400149 (1968-09-01), Quimby et al.
patent: 3621081 (1971-11-01), Prentice
patent: 3645670 (1972-02-01), Kowalski
patent: 3734954 (1973-05-01), Maier
patent: 4020091 (1977-04-01), Budnick
patent: 4126412 (1978-11-01), Masson
Millson, H. E., Amer. Dyestuff Reporter, Jan. 30, 1956, pp. 66-81.

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