Non-bleeding indicator and dyes therefor

Details Non-bleeding indicator and dyes therefor Non-bleeding indicator and dyes therefor

1969-03-14

1977-06-14

McCamish, Marion E.

Compositions

Nonreactive analytical, testing, or indicating compositions

23230B, 23230R, 23253TP, 260148, 260200, G01N 3100, G01N 3300

Patent

active

040295982

ABSTRACT:
In indicators comprising a carrier such as cellulose saturated with one or more azo dyes having reactive groups capable of forming a chemical bond with the carrier material, the improvement wherein the indicator is made non-bleeding by using such dyes which, in addition to the reactive group, contain at least one additional sulfonic acid and/or carboxylic acid group, an example of such a dye being 4-anilino-3'-(2-hydroxysulfonyloxyethylsulfonyl)-azobenzene-6'-carboxylic acid.

REFERENCES:
patent: 2202652 (1965-08-01), Meininger
patent: 2806023 (1957-09-01), Wenker
patent: 2915373 (1959-12-01), Wenker
patent: 3510469 (1970-05-01), Sugiyama
patent: 3515716 (1970-06-01), Sugiyama
Bohnert, "The Journal of the Society of Dyers and Colourists," Jan. 1960, pp. 581-585.

Affiliated with

Also associated with

Rating

Non-bleeding indicator and dyes therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-bleeding indicator and dyes therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-bleeding indicator and dyes therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-8949