Triazinyl-flavonate brighteners

C - Chemistry – Metallurgy – 07 – D

Patent

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Details

C07D 403/14 (2006.01) D21H 21/30 (2006.01)

Patent

CA 2571436

The invention relates to compounds of formula (I) wherein R1, R2, R3 and R4 independently represent OR5 or NR6R7; R5, R6 and R7 independently represent hydrogen, substituted or unsubstituted alkyl, especially C1-C4 alkyl, or substituted or unsubstituted aryl, especially C6-C10 aryl; R6, R7 can also form an aliphatic or aromatic ring, together with the N atom to which they are bonded and optionally other heteroatoms; M represents hydrogen, an equivalent of a monovalent or bivalent metal ion, especially from the group of alkali metals or alkaline earth metals, or of an optionally organically substituted ammonium ion; and B1 represents a bivalent binding link.

L'invention concerne des composés de formule (I). Dans la formule (I), R1, R2, R3 et R4 représentent indépendamment les uns des autres OR5 ou NR6R7, R5, R6 et R7 représentant indépendamment les uns des autres hydrogène, alkyle substitué ou non substitué, notamment alkyle C1-C4, ou aryle substitué ou non substitué, notamment aryle C6-C10, et R6 et R7 pouvant en outre former, avec l'atome N auquel ils sont liés et éventuellement avec d'autres hétéroatomes, un anneau aliphatique ou aromatique ; M représente hydrogène ou un équivalent d'un ion métallique monovalent ou bivalent, notamment du groupe des métaux alcalins ou des métaux alcalinoterreux, ou d'un ion ammonium éventuellement substitué organiquement ; B1 représente un bras bivalent.

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