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US 7,247,174 B2Granted
Amphoteric fluorescent whitening agents
AssigneeCiba Specialty Chemicals Corporation
InventorsGoetz Scheffler, Peter Rohringer, Ian John Fletcher
Life of this patent
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Abstract
The present invention provides novel bis-triazinylaminostilbene amphoteric fluorescent whitening agents, comprising both individual components and mixtures thereof, a process for their preparation, intermediates useful for their prepartion and use of the fluorescent whitening agents for the fluorescents whitening of paper.
Claims5
A fluorescent whitening agent, which comprises a mixture of compounds of the formulae:
- in which
- A* represents a group of the formula
- wherein
- A represents —X—Y—NR3R4 and
- C is —NR1R2 and
- B* represents a group of the formula
- whereby the groups A* and B* are not identical,
- wherein
- D represents —NR5R6 and
- E represents —X1—Y1—NR7R8, whereby
- X and X1 each, independently of each other, represent —O— or —NH—,
- Y and Y1 each, independently of each other, represent a straight-chain C2-C8alkylene or branched C3-C8alkylene chain, which may be interrupted by one or two nitrogen, oxygen or sulphur atoms or represent a 5- or 6-membered cycloaliphatic ring,
- R1, R2, R5 and R6 each independently of each other, represent hydrogen, C1-C8alkyl, C2-C4hydroxyalkyl, C1-C4alkoxyC1-C4alkyl, phenyl, which is unsubstituted or substituted by halogen, C1-C4alkoxy, C1-C4alkyl or sulphonamido, or
- R1 and R2 and/or R5 and R6, together with the nitrogen atom to which they are attached, complete a morpholino- piperidino- or pyrrolidino-ring,
- R3, R4, R7 and R8, each independently of each other, represent hydrogen, C1-C4alkyl, C2-C4hydroxyalkyl or
- R3 and R4 and/or R7 and R8, together with the nitrogen atom to which they are attached, complete a morpholino-, piperidino- or pyrrolidino-ring and
- M represents hydrogen, an alkaline or alkaline earth metal, ammonium or alkylammonium.
14 more elements
A compound of the formula
- in which
- R9 and R10, each independently of each other, represent hydrogen or C2-C4hydroxyalkyl and Y and Y1 each, independently of each other, represent a straight-chain C2-C8alkylene or branched C3-C8alkylene chain, which may be interrupted by one or two nitrogen, oxygen or sulphur atoms or represent a 5- or 6-membered cycloaliphatic ring,
- R1, R2, R5 and R6 each independently of each other, represent hydrogen, C1-C8alkyl, C2-C4hydroxyalkyl, C1-C4alkoxyC1-C4alkyl, phenyl, which is unsubstituted or substituted by halogen, C1-C4alkoxy, C1-C4alkyl or sulphonamido, or
- R1 and R2 and/or R5 and R6, together with the nitrogen atom to which they are attached, complete a morpholino- piperidino- or pyrrolidino-ring,
- R3 and R4 each independently of each other, represent hydrogen, C1-C4alkyl, C2-C4hydroxyalkyl or
- R3 and R4, together with the nitrogen atom to which they are attached, complete a morpholino-, piperidino- or pyrrolidino-ring and
- M represents hydrogen, an alkaline or alkaline earth metal, ammonium or alkylammonium
- with the proviso that when
- Y and Y1 both represent —CH2CH2CH2—, R1 and R5 are both phenyl and R2 and R6 are both hydrogen,
- R3, R4, R9 and R10 are not all —CH2CH2OH.
7 more elements
Dependencies are inferred from the claim text.