C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/164.2, 8/25.
C09B 31/04 (2006.01) C09B 31/047 (2006.01) D06P 1/06 (2006.01) D06P 1/39 (2006.01)
Patent
CA 1045122
ABSTRACT OF THE DISCLOSURE Novel organic tetrazo compounds are set forth, which contain up to 3 sulphonic groups, and are useful as acid dyes for natural and synthetic polyamidic fibres, such as wool, silk, superpolyamides and superpolyurethanes. The compounds have the general formual Image ( I ) wherein: X = -H, -CH3, -OCH3, -Cl, -SO3M, or -NO2; Z = -H, or -CH3; Y = -H, or -SO3M; R = a lower alkyl having from 1 to 4 carbon atoms, or -CH2CH2-SO3M, when Y is hydrogen; and M = -H -Na, -K or -NH4. The SO3M group takes the position 6 or 7.
255394
Condo Antonino
Papa Sisto S.
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