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US 6,660,284 B2Granted
Anthraquinone compounds, manufacturing process, use as pigments and cosmetic composition
AssigneeL'oreal
InventorsThierry Bordier, Michel Philippe
Life of this patent
Estimating the term…
Abstract
The present invention relates to novel compounds corresponding to formula (I) below: The invention also relates to the process for manufacturing them, to their use as pigments and to a cosmetic composition comprising them.
Claims22
A compound having the formula (I):
- in which:
- m and n, which may be identical or different, are between 1 and 20;
- X and Z each represent NH or O;
- p is 0 or 1;
- Y represents a carbon atom or a sulphur atom;
- R1, R′1, R5, R′5, R6, R′6, R7, R′7, R8, R′8, R9, R′9, R10 and R′10, which may be identical or different, each represent a hydrogen atom, a halogen atom, a linear or branched, saturated or unsaturated C1-8 hydrocarbon-based group, a hydroxyl group,
- and R2, R3, R4, R′4 and R11, which may be identical or different, each represent a hydrogen atom, a linear or branched, saturated or unsaturated, optionally hydroxylated, C1-8 hydrocarbon-based group.
4 more elements
A compound having the formula (II):
- in which:
- n is from 1 to 12;
- R1 represents a hydrogen atom, a halogen atom, a linear or branched, saturated or unsaturated C1-C8 hydrocarbon-based group, a hydroxyl group or a group —NR2R3;
- R2, R3 and R4 each represent a hydrogen atom or a linear or branched, saturated or unsaturated C1-C8 hydrocarbon-based group;
- and
- R5 and R6 each represent a hydrogen atom, a halogen atom, a linear or branched, saturated or unsaturated C1-C8 hydrocarbon-based group or a hydroxyl group.
3 more elements
A manufacturing process comprising reacting an anthraquinone derivative of general formula (IV):
- in which:
- n is between 1 and 20;
- Z represents NH or O;
- R1, R5, R6, R7, R8, R9 and R10, which may be identical or different, each represent a hydrogen atom, a halogen atom, a linear or branched, saturated or unsaturated C1-8 hydrocarbon-based group, a hydroxyl group,
- and R2, R3, R4 and R11, which may be identical or different, each represent a hydrogen atom, a linear or branched, saturated or unsaturated, optionally hydroxylated C1-8 hydrocarbon-based group;
- with phosgene or a phosgene derivative at a temperature from 0 to about 160° C. for about 30 minutes to about 20 hours in the presence of a solvent and optionally a base.
3 more elements
Dependencies are inferred from the claim text.