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US 6,890,454 B2Granted
Optical brighteners compositions their production and their use
AssigneeClariant Finance (BVI) Limited
InventorsJohn Martin Farrar, Andrew Clive Jackson, Alec Stewart Tindal
Life of this patent
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Abstract
The invention relates to an optical brightener mixture (W) comprising optical brighteners (A) of formula (Ia), and (B) of formula (Ib) and optionally (C) of formula (Ic) as defined herein, their concentrated aqueous solutions (S), their production and their use.
Claims36
An optical brightener (C) of formula (Ic):
- wherein
- R signifies hydrogen or methyl,
- R1 signifies hydrogen, unsubstituted C1-6-alkyl, C1-6-alkyl substituted with carbamoyl or carboxy, C2-6-alkyl substituted with hydroxy or methoxy, hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl)
- R2 signifies C1-6-alkyl substituted with carbamoyl or carboxy,
- or
- R1 and R2 together with the nitrogen to which they are linked form a carboxypyrrolidine ring,
- R3 signifies hydrogen, unsubstituted C1-6-alkyl, C2-6-alkyl substituted with hydroxy or methoxy, or hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl),
- R4 signifies hydrogen, unsubstituted C1-8-alkyl, C2-6-alkyl , substituted with hydroxy or methoxy, or hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl),
- or
- R3 and R4 together with the nitrogen to which they are linked form a morpholine ring, and
- M signifies an equivalent of a cation.
8 more elements
An optical brightener mixture (W) comprising an optical brightener (A) of formula
- wherein
- R signifies hydrogen or methyl,
- R1 signifies hydrogen, unsubstituted C1-6-alkyl, C1-6-alkyl substituted with carbamoyl or carboxy, C2-6-alkyl substituted with hydroxy or methoxy, hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl)
- R2 signifies C1-6-alkyl substituted with carbamoyl or carboxy,
- or
- R1 and R2 together with the nitrogen to which they are linked form a carboxypyrrolidine ring,
- and
- M signifies an equivalent of a cation,
- and an optical brightener (B) of formula
- wherein
- R signifies hydrogen or methyl,
- R3 signifies hydrogen, unsubstituted C1-6-alkyl, C2-6-alkyl substituted with hydroxy or methoxy, or hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl),
- R4 signifies hydrogen, unsubstituted C1-6-alkyl, C2-6-alkyl substituted with hydroxy or methoxy, or hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl),
- or
- R3 and R4 together with the nitrogen to which they are linked form a morpholine ring,
- and
- M signifies an equivalent of a cation.
14 more elements
A process for the production of a mixture (W) comprising the steps of mixing an optical brightener (A) of formula
- wherein
- R signifies hydrogen or methyl,
- R1 signifies hydrogen, unsubstituted C1-8-alkyl, C1-6-alkyl substituted with carbamoyl or carboxy, C2-6-alkyl substituted with hydroxy or methoxy, hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl)
- R2 signifies C1-6-alkyl substituted with carbamoyl or carboxy,
- or
- R1 and R2 together with the nitrogen to which they are linked form a carboxypyrrolidine ring,
- and
- M signifies an equivalent of a cation,
- and an optical brightener (B) of formula, optionally in the presence of water
- wherein
- R signifies hydrogen or methyl,
- R3 signifies hydrogen, unsubstituted C1-6-alkyl, C2-6-alkyl substituted with hydroxy or methoxy, or hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl),
- R4 signifies hydrogen, unsubstituted C1-6-alkyl, C2-6-alkyl substituted with hydroxy or methoxy, or hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl),
- or
- R3 and R4 together with the nitrogen to which they are linked form a morpholine ring,
- and
- M signifies an equivalent of a cation.
14 more elements
A process for the production of a mixture (W) comprising the step of reacting a compound of formula
- wherein
- R is hydrogen or methyl
- Hal is halogen
- and
- M′ is an alkali metal cation,
- is reacted with a mixture of amines of formulae
- and
- wherein
- R1 signifies hydrogen, unsubstituted C1-6-alkyl, C1-6-alkyl substituted with carbamoyl or carboxy, C2-6-alkyl substituted with hydroxy or methoxy, hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl)
- R2 signifies C1-6-alkyl substituted with carbamoyl or carboxy,
- or
- R1 and R2 together with the nitrogen to which they are linked form a carboxypyrrolidine ring,
- R3 is hydrogen, unsubstituted C1-6-alkyl, C2-6-alkyl substituted with hydroxy or methoxy, or hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl),
- R4 signifies hydrogen, unsubstituted C1-8-alkyl, C2-8-alkyl substituted with hydroxy or methoxy, or hydroxy- or methoxy-(C2-3-alkoxy)-(C2-3-alkyl),
- or
- R3 and R4 together with the nitrogen to which they are linked form a morpholine ring,
- to form a mixture of a compound (A) of formula (Ia)
- a compound (B) of formula (Ib)
- and a compound (C) of the formula (Ic).
- wherein M is an equivalent of a cation.
17 more elements
Dependencies are inferred from the claim text.