Polyamides mass coloured with diketopyrrolopyrrole pigments
AssigneeCiba-Geigy Corporation
InventorsOlof Wallquist, Bernd Lamatsch
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Abstract
Mass-coloured synthetic polyamide containing, as pigment, at least one diketopyrrolopyrrole pigment of formula ##STR1## wherein A and B are each independently of the other a radical of formula ##STR2## wherein Q is a --CONH.sub.2 group, m is 1 or 2, R.sub.1 and R.sub.2 are each independently of the other hydrogen, Cl, Br, CH.sub.3 or C.sub.2 H.sub.5, R.sub.3 is hydrogen, CH.sub.3, C.sub.2 H.sub.5 or phenyl, X is a direct bond, --O--, --S--, --SO.sub.2 --, --CH.dbd.CH--, --CH.sub.2 -- or --C(CH.sub.3).sub.2 --, and Y is --O-- or --S--. Polyamides mass-coloured with the pigments useful in the practice of this invention have exceptional heat stability and excellent lightfastness.
Claims3
Mass-coloured synthetic polyamide containing, as pigment, at least one diketopyrrolopyrrole pigment of formula ##STR15## wherein A and B are each independently of the other a radical of formula ##STR16## wherein Q is a --CONH.sub.2 group,
- m is 1 or 2,
- R.sub.1 and R.sub.2 are each independently of the other hydrogen, Cl, Br, CH.sub.3 or C.sub.2 H.sub.5,
- R.sub.3 is hydrogen, CH.sub.3, C.sub.2 H.sub.5 or phenyl,
- X is a direct bond, --O--, --S--, --SO.sub.2 --, --CH.dbd.CH--, --CH.sub.2 -- or --C(CH.sub.3).sub.2 --, and
- Y is --O-- or --S--.
Dependencies are inferred from the claim text.