Patent classifications
C
CHEMISTRY; METALLURGY
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C09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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C09B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; , e.g. PIGMENTS; MORDANTS; LAKES
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62/00
Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves
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C09B62/02
with the reactive group directly attached to a heterocyclic ring
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C09B62/021
Specific dyes not provided for in groups C09B62/024 - C09B62/038
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C09B62/021

FLUORECENT REACTIVE DYES, PROCESS FOR THE PRODUCTION THEREOF AND THEIR USE
20180194943 · 2018-07-12 · ·

The present invention is directed to fluorescent reactive dyes of general formula (I)

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a process for the production thereof and their use.

REACTIVE HEVL-ABSORBING DYES
20250361400 · 2025-11-27 ·

The present invention is related to reactive dyes each of which comprises a dichlorotriazine, chlorotriazine or vinylsulphonyl group and is capable of absorbing HEVL. They are suitable for method for producing colored silicone hydrogel contact lenses each made of a silicone hydrogel material having hydroxyl groups. The present invention is also related to a colored silicone hydrogel contact lens comprising a colored circular region in which a reactive dye is applied and thereby covalently attached.