Dyed paper

Details Dyed paper Dyed paper

1978-07-25

1980-07-15

Griffin, Ronald W.

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

542433, 542449, D21H 146

Patent

active

042126444

ABSTRACT:
Paper dyed with compounds of the general formula I ##STR1## where R.sup.1 is unsubstituted or substituted alkyl, T is hydrogen or alkyl, A.sup..theta. is an anion, n is 1, 2 or 3 and X is an aminoaryl radical which may or may not possess further substituents, and where the benzene nucleus a may be substituted by alkyl, hydroxy, alkoxy, chlorine, bromine, amino, alkylamino, dialkylamino, alkanoylamino or nitro. The compounds of the formula I dye paper in brilliant yellow shades. They are also suitable for dyeing materials containing anionic groups.

REFERENCES:
patent: 104006 (1870-06-01), Fitzgerald
patent: 2085163 (1937-06-01), Lubs et al.
patent: 3243298 (1966-03-01), Libeer et al.
patent: 3574200 (1971-04-01), Brack
patent: 3931156 (1976-01-01), Libeer et al.
The Paper Industry, Sep., 1954, pp. 589-592. _

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