Pyridine and pyrimidine substituted triazine UV absorbers
AssigneeArchroma (Switzerland) GmbH
InventorsHosuk Ryu, Hans-Jorg Peter, Gilles Sperissen, Martin Weber
Life of this patent
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Abstract
A compound of formula wherein V, W, X and Y represent N or CH, at least one of V, W, X and Y being N and at least two of V, W, X and Y being CH; R1, R2 and R3 are each independently of the other hydrogen, C1-C8 alkyl, C1-C8 alkoxy, nitro, cyano, trifluoromethyl, halogen or hydroxy; and the compound provides good lightfastness properties to textile fibre materials, in particular PES fibre materials.
Claims20
A compound of formula
- wherein V, X and Y represent N or CH, one or two of V, X and Y being N and the remainder of V, X and Y being CH;
- W is CH;
- and
- R1, R2 and R3 are each independently of the other hydrogen, C1-C8 alkyl, C1-C8 alkoxy, nitro, cyano, trifluoromethyl, halogen or hydroxy;
- with the proviso that the compounds of formulae
- are excluded.
A photochemically stabilized textile fiber material comprising undyed, dyed or printed textile fiber material and at least one compound of formula
- wherein
- V, X and Y represent N or CH, one or two of V, X and Y being N and the remainder of V, X and Y being CH;
- W is CH;
- and
- R1, R2 and R3 are each independently of the other hydrogen, C1-C8 alkyl, C1-C8 alkoxy, nitro, cyano, trifluoromethyl, halogen or hydroxy;
- with the proviso that the compounds of formulae
- are excluded.
A process for the photochemical stabilization of textile fiber material, comprising treating an undyed, dyed or printed textile fiber material with a liquor comprising at least one compound of formula
- wherein
- V, X and Y represent N or CH, one or two of V, X and Y being N and the remainder of V, X and Y being CH;
- W is CH;
- and
- R1, R2 and R3 are each independently of the other hydrogen, C1-C8 alkyl, C1-C8 alkoxy, nitro, cyano, trifluoromethyl, halogen or hydroxy;
- with the proviso that the compounds of formulae
- are excluded.
A process for the preparation of a compound of formula (1), comprising
- (I) preparing 2-aryl-4H-1,3-benzoxazin-4-one (4) by acid-catalysed ring closure reaction of salicylamide derivative (2) with carboxylic acid (3)
- and
- (II) reacting the 2-aryl-4H-1,3-benzoxazin-4-one (4) with amidine (5) to provide the compound of formula (1)
- wherein
- V, X and Y represent N or CH, one or two of V, X and Y being N and the remainder of V, X and Y being CH;
- W is CH;
- and
- R1, R2 and R3 are each independently of the other hydrogen, C1-C8 alkyl, C1-C8 alkoxy, nitro, cyano, trifluoromethyl, halogen or hydroxy;
- with the proviso that the compounds of formulae
- are excluded.
Dependencies are inferred from the claim text.