Title:
PROCESS FOR THE PREPARATION OF AMIDOSTYRYLSTILBENE-DISULPHONIC ACID COMPOUNDS AND NOVEL AMIDOSTYRYLSTILBENE-DISULPHONIC ACID COMPOUNDS AND THEIR USE AS FLUORESCENT WHITENING AGENTS
Document Type and Number:
WIPO Patent Application WO2001092217
Kind Code:
A3
Abstract:
The present invention relates to a process for the preparation of amidostyrylstilbene-disulphonic acid derivatives represented by formula (1) in which X represents a group of formula (2), (3) or (4), whereby, in formula (2), R1 is hydrogen, C1-C4-alkyl which is unsubstituted or substituted by 1 to 3 halogen atoms, C1-C4-alkyl-C1-C4-alkoxy, phenyl which is unsubstituted or substituted by C1-C4-alkyl, nitro, halogen, SO3M or COOM, amino, mono- C1-C4-alkylamino or phenylamino, whereby the phenyl group is unsubstituted or substituted by C1-C4-alkyl, nitro, halogen, SO3M or COOM; in formula (3), R2 and R3 are hydrogen or together form a 6-membered unsaturated or saturated condensed ring, unbridged or bridged by 1 or 2 carbon atoms, the bond between these substituents being of single- or double-bond character; in formula (4), R4 represents hydrogen, C1-C4-alkyl, nitro, halogen, SO3M or COOM; in formula (1), Y represents phenyl which is unsubstituted or substituted by C1-C4-alkyl, nitro, halogen, SO3M or COOM or represents a heteroaromatic residue and, in any of the above formulae, M represents hydrogen, an alkaline- or alkaline earth-metal cation, or a cation formed from an amine, some of which are new, and use of the novel compounds as fluorescent whitening agents for synthetic or natural organic materials.
Inventors:
ELIU VICTOR PAUL (DE)
ROHRINGER PETER (CH)
HAUSER JULIA (DE)
ROHRINGER PETER (CH)
HAUSER JULIA (DE)
Application Number:
PCT/EP2001/005866
Publication Date:
May 16, 2002
Filing Date:
May 22, 2001
Export Citation:
Assignee:
CIBA SC HOLDING AG (CH)
ELIU VICTOR PAUL (DE)
ROHRINGER PETER (CH)
HAUSER JULIA (DE)
ELIU VICTOR PAUL (DE)
ROHRINGER PETER (CH)
HAUSER JULIA (DE)
International Classes:
C07C303/22; C07C303/32; C07C303/40; C07D209/94; C11D3/42; D06L3/12; D06L4/621; C07C309/51; C07C311/21; D21H21/30; (IPC1-7): C07C309/32; C07C311/21; C07D207/40; C07D209/48; C07D209/76; C11D3/34; C11D3/42
Domestic Patent References:
| WO2000009471A1 | 2000-02-24 |
Foreign References:
| DE828986C | 1952-01-21 |
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