Process for preparation of concentrated anionic red dye solution

Details Process for preparation of concentrated anionic red dye solution Process for preparation of concentrated anionic red dye solution

1986-01-30

1987-03-31

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dye concentrate composition wherein an additional amount of...

8604, 8683, 8924, C09B 6700, C09B 2900

Patent

active

046540458

ABSTRACT:
The present invention is a process for the preparation of concentrated anionic red dye solutions which are storage stable. The process allows manufacture of a solution of a dye having the formula: ##STR1## wherein R.sub.1 is --SO.sub.2 N(CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.3).sub.2, --SO.sub.2 N(C.sub.6 H.sub.5)(CH.sub.2 CH.sub.3), --SO.sub.2 N(CH.sub.3)(C.sub.6 H.sub.11), or --CF.sub.3 ;

REFERENCES:
patent: 4087245 (1978-05-01), Kramer et al.
patent: 4198203 (1980-04-01), Groll et al.
patent: 4282000 (1981-08-01), Groll et al.

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