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US 4,377,390 AGranted
Acetoacetic arylide azo dyestuffs for synthetic materials, especially polyester
AssigneeBayer Aktiengesellschaft
InventorsKarl H. Schundehutte, Henning Reel, Winfried Kruckenberg
Life of this patent
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Abstract
Dyestuffs of the formula ##STR1## wherein R denotes hydrogen or alkyl, X denotes R, Cl or Br, m and p denotes 0 or 1, n denotes 2 to 4, A denotes oxygen or --NR-- and B denotes C.sub.1 -C.sub.8 -alkyl, alkenyl, cycloalkyl, aralkyl or aryl, are especially suitable for the dyeing of polyester-materials; they give deep yellow dyeings with good light fastness properties.
Claims1
A process for dyeing and printing synthetic fibre materials comprising employing therefor azo disperse dyestuffs of the formula (I) ##STR16## wherein R denotes hydrogen or C.sub.1 -C.sub.4 -alkyl,
- X denotes R, Cl or Br,
- m denotes the number 0 or 1,
- n denotes a number from 2 to 4,
- p denotes the number 0 or 1,
- A denotes oxygen or --NR-- and
- B denotes optionally substituted C.sub.1 -C.sub.8 -alkyl, alkenyl, cycloalkyl, aralkyl or aryl.
3 more elements
Dependencies are inferred from the claim text.