According to the invention there is provided a compound of Formula (I) in which: A is a C.sub.2-8 alkylene group; R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently selected from hydrogen, C.sub.1-4 alkyl, C.sub.2-4 dihydroxyalkyl in which the carbon atom attached to the nitrogen atom does not carry a hydroxyl group and no carbon atom is substituted by two hydroxyl groups, or R.sup.2 and R.sup.3 together form a C.sub.2-6 alkylene group which with the nitrogen atom to which R.sup.2 and R.sup.3 are attached forms a heterocyclic ring; X.sub.1, X.sub.2 and X.sub.3 are independently selected from hydrogen, hydroxyl, NR.sup.1-A-NR.sup.2R.sup.3R.sup.4+(Z.sup.m−).sub.1/m, for halogeno amino, C.sub.1-4 alkoxy or C.sub.2-8 alkanoyloxy; and (Z.sup.m−).sub.1/m is an anion of charge m; or a derivative in which the group NR.sup.1 is quaternarized.

The present disclosure provides a contact lens comprising a first colourant which is a blue-blocking colourant having an absorption maximum (λ.sub.max) in the range of from 415 nm to 455 nm and a second colourant, wherein the second colourant is a polymerizable dye having an absorption maximum (λ.sub.max) in the range of from 470 nm to 600 nm, and optionally also comprising a third colourant which is a colourant having an absorption maximum in the range of from greater than 600 nm to 800 nm. A method of making the lens is also provided.

A coloring compound comprises a triphenylmethane structure having specific substituents.

Provided is an infrared-reflecting black isoindolinone pigment having a novel skeleton, the black isoindolinone pigment having a high blackness (coloring power) and excellent durability such as heat resistance. The black isoindolinone pigment is represented by the following formula (1), wherein each X independently represents a chlorine atom, a bromine atom, or an alkyl group, and 8n+m0. ##STR00001##

Provided is an infrared-reflecting black isoindolinone pigment having a novel skeleton, the black isoindolinone pigment having a high blackness (coloring power) and excellent durability such as heat resistance. The black isoindolinone pigment is represented by the following formula (1), wherein each X independently represents a chlorine atom, a bromine atom, or an alkyl group, and 8n+m0. ##STR00001##

A container for personal health compositions with melatonin. The container has a polyester and a colorant composition with at least two dyes and a pigment. The container can filter out the wavelengths of visible light that contribute to the photodegradation of melatonin during storage in normal factory or home light conditions.

A container for personal health compositions with melatonin. The container has a polyester and a colorant composition with at least two dyes and a pigment. The container can filter out the wavelengths of visible light that contribute to the photodegradation of melatonin during storage in normal factory or home light conditions.

A thermal transfer recording sheet includes a base material and, on the base material, a yellow-dye layer containing a yellow dye, a magenta-dye layer containing a magenta dye, and a cyan-dye layer containing a cyan dye. The yellow dye and the cyan dye contain compounds having specific structures.

Provided is an infrared-reflecting black isoindolinone pigment having a novel skeleton, the black isoindolinone pigment having a high blackness (coloring power) and excellent durability such as heat resistance. The black isoindolinone pigment is represented by the following formula (1), wherein each X independently represents a chlorine atom, a bromine atom, or an alkyl group, and 8n+m0.

##STR00001##

Provided is an infrared-reflecting black isoindolinone pigment having a novel skeleton, the black isoindolinone pigment having a high blackness (coloring power) and excellent durability such as heat resistance. The black isoindolinone pigment is represented by the following formula (1), wherein each X independently represents a chlorine atom, a bromine atom, or an alkyl group, and 8n+m0.

##STR00001##