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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11/00
Diaryl- or thriarylmethane dyes
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C09B11/04
derived from triarylmethanes; , i.e. central C-atom is substituted by amino, cyano, alkyl
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C09B11/06
Hydroxy derivatives of triarylmethanes in which at least one OH group is bound to an aryl nucleus; and their ethers or esters
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C09B11/08
Phthaleins;; Phenolphthaleins; Fluorescein
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