A light-stable colored composition which includes a colorant and a radiation transorber. The colorant, in the presence of the radiation transorber, is adapted, upon exposure of the transorber to specific, narrow bandwidth radiation, to be mutable. The radiation transorber also imparts light-stability to the colorant so that the colorant does not fade when exposed to sunlight or artificial light.

Dye preparations comprising, based on the weight of the preparation, from 0.1 to 30% by weight of one or more dyes selected from the class of the anthraquinones or quinophthalones which are free of ionic groups, from 0.1 to 20% by weight of a dispersant based on an arylsulfonic acid-formaldehyde condensation product, from 10 to 90% by weight of a mono- or polyhydric alcohol and optionally water, are useful as inks in the inkjet process and also for sublimation transfer printing.

A colorant mixture of C.I. Acid Red 289 and C.I. Reactive Red 23 and optionally a shading colorant is used for magenta recording fluids.

A colorant formulation is described for mass-coloring high-melting polyesters. It comprises colorant and support for the colorant. The colorant formulation has a recrystallization exotherm of 8 to 55 joule/g between 210.degree. C. and 150.degree. C.

Disclosed are colorant compounds of the formula ##STR00001## wherein R is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and wherein R can be joined to the phenyl moiety to form a ring, each R', independently of the others, is a halogen atom, an alkyl group, an alkoxy group, a nitrile group, a nitro group, an amide group, or a sulfonamide group, z is an integer of 0, 1, 2, 3, or 4, n is an integer representing the number of carbon atoms in each repeat alkylene oxide un...

Colorant compositions, and intermediate chemical compositions of colorant compositions are made from 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-substituted compounds.

A non-melted, non-powder concentrated colorant material consists essentially of a flux that is not over 30% by weight of an alkali metal borate, a binder that is an alkali metal silicate and 35-60% V.sub.2 O.sub.5. The flux, binder and colorant oxide constitute at least 90% of the composition. A method of producing a black glass-ceramic material comprises forming the colorant material into particles and adding the particles to a precursor glass for the glass-ceramic while the glass is passing th...

Disclosed are colorant compounds of the formulae ##STR00001## wherein R.sub.1, R.sub.2, R.sub.3, M, A, E, G, J, m, n, and p are as defined herein.

Compounds of the formula ##STR00001## wherein M is either (1) a metal ion having a positive charge of +p wherein p is an integer which is at least 2, said metal ion being capable of forming a compound with at least two chromogen moieties, or (2) a metal-containing moiety capable of forming a compound with at least two chromogen moieties, z is an integer representing the number of chromogen moieties associated with the metal and is at least 2, and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.su...

A food grade colorant which is substantially free of 4 methyl imidazole 4 MeI is obtained by digesting a roasted malted cereal in water by use of at least one protease and at least one carbohydrase enzyme. The aqueous extract is separated from remaining solids and retained for use as the colorant. It may be concentrated or dried to a free flowing powder. The colorant obtained from roasted black malted barley typically has a 4 MeI content of less than 50 mg/Kg and a color greater than 14,000 EBC ...