Semicarbazides and the use thereof for stabilizing polyamide fibre materials and the dyeings produced thereon
AssigneeCiba-Geigy Corporation
InventorsJurgen Kaschig, Gerhard Reinert, Georges Metzer
Life of this patent
Estimating the term…
Abstract
Novel semicarbazides of the formula ##STR1## wherein R.sub.1 and R.sub.2, each independently of the other, are hydrogen, C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl, C.sub.1 -C.sub.5 alkoxy or phenyl, or R.sub.1 and R.sub.2, together with the linking nitrogen atom, form a morpholine or piperazine radical, p is 0 or 1, and Q depends on the value of p as described herein. The novel compounds, which are water-soluble in aqueous application systems, have fibre affinity and are suitable for the photochemical and thermal stabilization of polyamide fibre materials and the dyeings produced thereon.
Claims5
A semicarbazide of general formula ##STR30## wherein R.sub.1 and R.sub.2, each independently of the other, are C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl, C.sub.1 -C.sub.5 alkoxy or phenyl,
- p is 0 or 1,
- when p=1, Q is a radical of formula ##STR31## wherein R.sub.3 is hydrogen, C.sub.1 -C.sub.5 alkyl or halogen,
- m is 0,1,2 or 3,
- q=1
- or, when p=0,
- Q is a radical of formula ##STR32## wherein R.sub.4 is hydrogen, C.sub.1 -C.sub.5 alkyl, halogen or a radical of formula ##STR33## wherein R.sub.5 is hydrogen, C.sub.1 -C.sub.5 alkyl or halogen, M is hydrogen or alkali, and
- A is --NH--, --O-- or --SO.sub.2 --, and q and r are 0 or 1, but are not simultaneously 0.
Dependencies are inferred from the claim text.