Uses of co-crystals
OwnerIain OSWALD, Amit DELORIinventors
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Abstract
The present invention discloses new uses of coloured co-crystals and associated salts formed by co-crystallization reactions in the dye, ink and paint industries. The present invention also provides novel co-crystals for use in, for example, the dye, ink and/or paint industries.
Claims18
(canceled)
A hair dye, ink and/or paint composition comprising a coloured co-crystal formed from a first and a second coformer.
3-14. (canceled)
A coloured co-crystal for use as a hair dye formed from p-phenylenediamine (PPD) or a derivative thereof in combination with an alcohol or ketone.
A coloured co-crystal for use as a hair dye formed from PPD, or a derivative cocrystallized with fumaric (FA), succinic (SA), glycolic, malonic, glutaric, thiodiglycolic (TDGA), adipic (AA), suberic (SubA) and azelaic (AzeA), sebacic (SebA), 1,3-phenylenediacetic, (1,3-PDAA), 1,4-phenylenediacetic, (1,4-PDAA) or trimesic (TMA) acids.
Dependencies are inferred from the claim text.