C
SECTION C — CHEMISTRY AND METALLURGY
  
CHEMISTRY
 C09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; MISCELLANEOUS COMPOSITIONS; MISCELLANEOUS APPLICATIONS OF MATERIALS
 C09B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES
 C09B

Note(s)

In this sub-class, a compound is always classified in the last appropriate place.

 C09B 1/00 - 
C09B 13/00
Anthracene dyes
 C09B 1/00
Dyes with an anthracene nucleus not condensed with any other ring
 C09B 1/02
·  Hydroxy-anthraquinones; Ethers and esters thereof
 C09B 1/04
·  ·  Preparation by synthesis of the nucleus
 C09B 1/06
·  ·  Preparation from starting materials already containing the anthracene nucleus
 C09B 1/08
·  ·  ·  Dyes containing only OH groups
 C09B 1/10
·  ·  ·  Dyes containing halogen
 C09B 1/12
·  ·  ·  Dyes containing sulphonic acid groups
 C09B 1/14
·  ·  ·  Dyes containing ether groups
 C09B 1/16
·  Amino-anthraquinones
 C09B 1/18
·  ·  Preparation by synthesis of the nucleus
 C09B 1/20
·  ·  Preparation from starting materials already containing the anthracene nucleus
 C09B 1/22
·  ·  ·  Dyes with unsubstituted amino groups
 C09B 1/24
·  ·  ·  ·  sulphonated
 C09B 1/26
·  ·  ·  Dyes with amino groups substituted by hydrocarbon radicals
 C09B 1/28
·  ·  ·  ·  substituted by alkyl, aralkyl, or cyclo-alkyl groups
 C09B 1/30
·  ·  ·  ·  ·  sulphonated
 C09B 1/32
·  ·  ·  ·  substituted by aryl groups (anthrimides C09B 1/48)
 C09B 1/34
·  ·  ·  ·  ·  sulphonated
 C09B 1/36
·  ·  ·  Dyes with acylated amino groups
 C09B 1/38
·  ·  ·  ·  urea and thiourea derivatives
 C09B 1/40
·  ·  ·  ·  the acyl groups being residues of an aliphatic or araliphatic carboxylic acid
 C09B 1/42
·  ·  ·  ·  the acyl groups being residues of an aromatic carboxylic acid
 C09B 1/44
·  ·  ·  ·  the acyl groups being residues of a heterocyclic carboxylic acid
 C09B 1/46
·  ·  ·  ·  the acyl groups being residues of cyanuric acid or an analogous heterocyclic compound
 C09B 1/48
·  ·  ·  Anthrimides
 C09B 1/50
·  Amino-hydroxy-anthraquinones; Ethers and esters thereof
 C09B 1/52
·  ·  sulphonated
 C09B 1/54
·  ·  etherified
 C09B 1/56
·  Mercapto-anthraquinones
 C09B 3/00
Dyes with anthracene nucleus condensed with one or more carbocyclic rings
 C09B 3/02
·  Benzathrones
 C09B 3/04
·  ·  Preparation by synthesis of the nucleus
 C09B 3/06
·  ·  Preparation from starting materials already containing the benzanthrone nucleus
 C09B 3/08
·  ·  ·  by halogenation
 C09B 3/10
·  ·  ·  Amino derivatives
 C09B 3/12
·  ·  Dibenzanthronyls
 C09B 3/14
·  Perylene derivatives
 C09B 3/16
·  ·  Preparation by synthesis of the nucleus
 C09B 3/18
·  ·  Preparation from starting materials already containing the perylene nucleus
 C09B 3/20
·  ·  ·  by halogenation
 C09B 3/22
·  Dibenzanthrones; Isodibenzanthrones
 C09B 3/24
·  ·  Preparation by synthesis of the nucleus
 C09B 3/26
·  ·  ·  from dibenzanthronyls
 C09B 3/28
·  ·  ·  from perylene derivatives
 C09B 3/30
·  ·  Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus
 C09B 3/32
·  ·  ·  by halogenation
 C09B 3/34
·  ·  ·  by oxidation
 C09B 3/36
·  ·  ·  by etherification of hydroxy compounds
 C09B 3/38
·  ·  ·  by introduction of hydrocarbon or acyl residues into amino groups
 C09B 3/40
·  Pyranthrones
 C09B 3/42
·  ·  Preparation by synthesis of the nucleus
 C09B 3/44
·  ·  Preparation from starting materials already containing the pyranthrone nucleus
 C09B 3/46
·  ·  ·  by halogenation
 C09B 3/48
·  ·  ·  Amino derivatives
 C09B 3/50
·  Dibenzopyrenequinones
 C09B 3/52
·  ·  Preparation by synthesis of the nucleus
 C09B 3/54
·  ·  Preparation from starting materials already containing the dibenzopyrenequinone nucleus
 C09B 3/56
·  ·  ·  Amino derivatives
 C09B 3/58
·  Benzanthraquinones
 C09B 3/60
·  Anthanthrones
 C09B 3/62
·  ·  Preparation by synthesis of the nucleus
 C09B 3/64
·  ·  Preparation from starting materials already containing the anthanthrone nucleus
 C09B 3/66
·  ·  ·  by halogenation
 C09B 3/68
·  ·  ·  Amino derivatives
 C09B 3/70
·  Benzo-, naphtho-, and anthra-dianthrones
 C09B 3/72
·  ·  Preparation by synthesis of the nucleus
 C09B 3/74
·  ·  Preparation from starting materials already containing the benzo-, naphtho-, or anthra-dianthrone nucleus
 C09B 3/76
·  ·  ·  by halogenation
 C09B 3/78
·  Other dyes in which the anthracene nucleus is condensed with one or more carbocyclic rings
 C09B 3/80
·  ·  Preparation by synthesis of the nucleus
 C09B 3/82
·  ·  Preparation from starting materials already containing the condensed anthracene nucleus
 C09B 5/00
Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
 C09B 5/02
·  the heterocyclic ring being condensed in peri position
 C09B 5/04
·  ·  Pyrazolanthrones
 C09B 5/06
·  ·  ·  Benzanthronyl-pyrazolanthrone condensation products
 C09B 5/08
·  ·  ·  Dipyrazolanthrones
 C09B 5/10
·  ·  Isothiazolanthrones; Isoxazolanthrones; Isoselenazolanthrones
 C09B 5/12
·  ·  Thiophenanthrones
 C09B 5/14
·  ·  Benz-azabenzanthrones (anthrapyridones)
 C09B 5/16
·  ·  Benz-diazabenzanthrones, e.g. anthrapyrimidones
 C09B 5/18
·  ·  Coeroxene; Coerthiene; Coeramidene; Derivatives thereof
 C09B 5/20
·  ·  Flavanthrones
 C09B 5/22
·  ·  ·  Preparation from starting materials already containing the flavanthrone nucleus
 C09B 5/24
·  the heterocyclic ring(s) being condensed with an anthraquinone nucleus in 1-2 and/or 2-3 position
 C09B 5/26
·  ·  Carbazoles of the anthracene series
 C09B 5/28
·  ·  ·  Anthrimide carbazoles
 C09B 5/30
·  ·  1.2 azoles of the anthracene series
 C09B 5/32
·  ·  1.3 azoles of the anthracene series
 C09B 5/34
·  ·  Anthraquinone acridones and thioxanthones
 C09B 5/36
·  ·  ·  Amino acridones
 C09B 5/38
·  ·  ·  Compounds containing acridone and carbazole rings
 C09B 5/40
·  ·  ·  Condensation products of benzanthronyl-amino-anthraquinones
 C09B 5/42
·  ·  Pyridino anthraquinones
 C09B 5/44
·  ·  Azines of the anthracene series
 C09B 5/46
·  ·  ·  Para-diazines
 C09B 5/48
·  ·  ·  ·  Bis-anthraquinonediazines (indanthrone)
 C09B 5/50
·  ·  ·  ·  ·  Preparation by alkaline melting of 2-amino-anthraquinones
 C09B 5/52
·  ·  ·  ·  ·  Preparation by condensation of 1.2-halogeno-amino-anthraquinones
 C09B 5/54
·  ·  ·  ·  ·  Preparation from 2-amino-anthrahydroquinones
 C09B 5/56
·  ·  ·  ·  ·  Preparation from starting materials already containing the indanthrene nucleus
 C09B 5/58
·  ·  ·  ·  ·  ·  by halogenation
 C09B 5/60
·  ·  ·  Thiazines; Oxazines
 C09B 5/62
·  Cyclic imides and amidines of peri-dicarboxylic acids of the anthracene, benzanthrene, and perylene series
 C09B 7/00
Indigoid dyes
 C09B 7/02
·  Bis-indole indigos
 C09B 7/04
·  ·  Halogenation thereof
 C09B 7/06
·  Indone-thionaphthene indigos
 C09B 7/08
·  Other indole-indigos
 C09B 7/10
·  Bis-thionaphthene indigos
 C09B 7/12
·  Other thionaphthene indigos
 C09B 9/00
Esters and ester-salts of leuco compounds of vat dyestuffs
 C09B 9/02
·  of anthracene dyes
 C09B 9/04
·  of indigoid dyes
 C09B 11/00
Diaryl- and triarylmethane dyes
 C09B 11/02
·  derived from diarylmethanes
 C09B 11/04
·  derived from triarylmethanes
 C09B 11/06
·  ·  Hydroxy derivatives of triarylmethanes in which at least one OH group is bound to an aryl nucleus
 C09B 11/08
·  ·  ·  Phthaleins
 C09B 11/10
·  ·  Amino derivatives of triarylmethanes
 C09B 11/12
·  ·  ·  without any OH group bound to an aryl nucleus
 C09B 11/14
·  ·  ·  ·  Preparation from aromatic aldehydes, aromatic carboxylic acids or derivatives thereof, and aromatic amines
 C09B 11/16
·  ·  ·  ·  Preparation from diarylketones or diarylcarbinols
 C09B 11/18
·  ·  ·  ·  Preparation by oxidation
 C09B 11/20
·  ·  ·  ·  Preparation from other triarylmethane derivatives
 C09B 11/22
·  ·  ·  containing OH groups bound to an aryl nucleus
 C09B 11/24
·  ·  ·  Phthaleins containing amino groups
 C09B 11/26
·  ·  Triarylmethane dyes in which at least one of the aromatic nuclei is heterocyclic
 C09B 11/28
·  Pyronines
 C09B 13/00
Oxyketone dyes
 C09B 13/02
·  of the naphthalene series (e.g. naphthazarin)
 C09B 13/04
·  of the pyrene series
 C09B 13/06
·  of the acetophenone series
 C09B 15/00 - 
C09B 21/00
Acridine, azine, oxazine, and thiazine dyes
 C09B 15/00
Acridine dyes
 C09B 17/00
Azine dyes
 C09B 17/02
·  of the benzene series
 C09B 17/04
·  of the naphthalene series
 C09B 17/06
·  Fluorindine and its derivatives
 C09B 19/00
Oxazine dyes
 C09B 19/02
·  Bisoxazines prepared from aminoquinones
 C09B 21/00
Thiazine dyes
 C09B 23/00 - 
C09B 25/00
Quinoline and polymethine dyes
 C09B 23/00
Methine or polymethine dyes (cyanines, etc.)
 C09B 23/02
·  the polymethine chain containing an odd number of CH groups
 C09B 23/04
·  ·  one CH group (cyanines, isocyanines, pseudocyanines)
 C09B 23/06
·  ·  three CH groups (carbocyanines)
 C09B 23/08
·  ·  more than three CH groups (polycarbocyanines)
 C09B 23/10
·  the polymethine chain containing an even number of CH groups; Merocyanines
 C09B 23/12
·  the polymethine chain being branched
 C09B 23/14
·  Styryl dyes
 C09B 23/16
·  the polymethine chain containing hetero atoms
 C09B 25/00
Quinophthalones
 C09B 27/00 - 
C09B 45/00
Azo dyes
 C09B 27/00
Preparations in which the azo group is formed in any way other than by diazotising and coupling
 C09B 27/02
·  Stilbene dyes
 C09B 27/04
·  Hydrazone dyes; Tartrazines
 C09B 29/00
Monoazo dyes prepared by diazotising and coupling
 C09B 29/02
·  from diazotised o-amino-hydroxy compounds
 C09B 29/04
·  from diazotised o-amino-carboxylic acids
 C09B 29/06
·  from coupling components containing amino as the only directing group
 C09B 29/08
·  ·  amino-benzenes
 C09B 29/10
·  from coupling components containing hydroxyl as the only directing group
 C09B 29/12
·  ·  of the benzene series
 C09B 29/14
·  ·  ·  Hydroxy-carboxylic acids
 C09B 29/16
·  ·  hydroxy-naphthlene sulphonic acids
 C09B 29/18
·  ·  ortho-hydroxy carbonamides
 C09B 29/20
·  ·  ·  of the naphthalene series
 C09B 29/22
·  ·  ·  of heterocyclic compounds
 C09B 29/24
·  from coupling components containing both hydroxyl and amino directing groups
 C09B 29/26
·  ·  Amino-phenols
 C09B 29/28
·  ·  Amino-naphthols
 C09B 29/30
·  ·  ·  Amino-naphtholsulphonic acid
 C09B 29/32
·  from coupling components containing a reactive methylene group
 C09B 29/34
·  from other coupling components
 C09B 29/36
·  ·  from heterocyclic compounds
 C09B 29/38
·  ·  ·  pyrazolones
 C09B 31/00
Disazo and polyazo dyes of the type A—B—C, A—B—C—D, etc., prepared by diazotising and coupling
 C09B 31/02
·  Disazo dyes
 C09B 31/04
·  ·  from a coupling component "C" containing a directive amino group
 C09B 31/06
·  ·  from a coupling component "C" containing a directive hydroxyl group
 C09B 31/08
·  ·  from a coupling component "C" containing directive hydroxyl and amino groups
 C09B 31/10
·  ·  from a coupling component "C" containing reactive methylene groups
 C09B 31/12
·  ·  from other coupling components "C"
 C09B 31/14
·  ·  ·  heterocyclic components
 C09B 31/16
·  Trisazo dyes
 C09B 31/18
·  ·  from a coupling component "D" containing a directive amino group
 C09B 31/20
·  ·  from a coupling component "D" containing a directive hydroxyl group
 C09B 31/22
·  ·  from a coupling component "D" containing directive hydroxyl and amino groups
 C09B 31/24
·  ·  from a coupling component "D" containing reactive methylene groups
 C09B 31/26
·  ·  from other coupling components "D"
 C09B 31/28
·  ·  ·  heterocyclic compounds
 C09B 31/30
·  Other polyazo dyes
 C09B 33/00
Disazo and polyazo dyes of the types A—K—B, A—B—K—C, etc., prepared by diazotising and coupling
 C09B 33/02
·  Disazo dyes
 C09B 33/04
·  ·  in which the coupling component is a dihydroxy or polyhydroxy compound
 C09B 33/06
·  ·  in which the coupling component is a diamine or polyamine
 C09B 33/08
·  ·  in which the coupling component is a hydroxy-amino compound
 C09B 33/10
·  ·  ·  in which the coupling component is an amino-naphthol
 C09B 33/12
·  ·  in which the coupling component is a heterocyclic compound
 C09B 33/14
·  ·  in which the coupling component is an arylamide of an o-hydroxycarboxylic acid or of a -keto-carboxylic acid
 C09B 33/16
·  ·  from other coupling components
 C09B 33/18
·  Trisazo or higher polyazo dyes of the types A—B—K—C,A—B—C—K—D and A—B—K—C—D
 C09B 33/20
·  Trisazo and higher polyazo dyes of the types
 C09B 35/00
Disazo and polyazo dyes of the type A—D—B prepared by diazotising and coupling
 C09B 35/02
·  Disazo dyes
 C09B 35/04
·  ·  the tetrazo component being a benzene derivative
 C09B 35/06
·  ·  the tetrazo component being a naphthalene derivative
 C09B 35/08
·  ·  the tetrazo component being a derivative of biphenyl
 C09B 35/10
·  ·  ·  from two coupling components of the same type
 C09B 35/12
·  ·  ·  ·  from amines
 C09B 35/14
·  ·  ·  ·  from hydroxy compounds
 C09B 35/16
·  ·  ·  ·  from hydroxy-amines
 C09B 35/18
·  ·  ·  ·  from heterocyclic compounds
 C09B 35/20
·  ·  ·  from two coupling compounds of different types
 C09B 35/22
·  ·  the tetrazo component being a derivative of a diaryl ether
 C09B 35/24
·  ·  the tetrazo component being a derivative of a diaryl amine
 C09B 35/26
·  ·  the tetrazo component being a derivative of a diaryl urea
 C09B 35/28
·  ·  the tetrazo component containing two aryl nuclei linked together by a COHN group
 C09B 35/30
·  ·  ·  from two identical coupling components
 C09B 35/32
·  ·  ·  from two different coupling components
 C09B 35/34
·  ·  the tetrazo component being heterocyclic
 C09B 35/36
·  Trisazo and higher polyazo dyes of the type
 C09B 35/38
·  Trisazo dyes ot the types
 C09B 35/40
·  ·  the component K being a dihydroxy or polyhydroxy compound
 C09B 35/42
·  ·  the component K being a diamine or polyamine
 C09B 35/44
·  ·  the component K being a hydroxy-amine
 C09B 35/46
·  ·  ·  the component K being an amino-naphthol
 C09B 35/48
·  ·  the component K being heterocyclic
 C09B 35/50
·  Higher polyazo dyes of the type or
 C09B 37/00
Azo dyes prepared by coupling the diazotised amine with itself
 C09B 39/00
Other azo dyes prepared by diazotising and coupling
 C09B 41/00
Special methods of performing the coupling reaction
 C09B 43/00
Preparation of azo dyes from other azo compounds
 C09B 43/02
·  by sulphonation
 C09B 43/04
·  by nitration
 C09B 43/06
·  by oxidation
 C09B 43/08
·  by reduction
 C09B 43/10
·  ·  with formation of a new azo or an azoxy bridge
 C09B 43/12
·  by acylation of amino groups
 C09B 43/14
·  ·  with phosgene or thiophosgene
 C09B 43/16
·  ·  linking amino-azo compounds with other amino compounds by a heterocyclic residue, e.g. a cyanuric acid residue
 C09B 43/18
·  by acylation of hydroxyl groups
 C09B 45/00
Complex metal compounds of azo dyes
 C09B 45/02
·  Preparation from o.o1-dihydroxy, o-hydroxy-o1-alkoxy or o-hydroxy o1-carboxy azo compounds
 C09B 45/04
·  ·  Azo compounds in general
 C09B 45/06
·  ·  ·  Chromium compounds
 C09B 45/08
·  ·  ·  Copper compounds
 C09B 45/10
·  ·  ·  Cobalt compounds
 C09B 45/12
·  ·  ·  other metal compounds
 C09B 45/14
·  ·  Monoazo compounds
 C09B 45/16
·  ·  ·  containing chromium
 C09B 45/18
·  ·  ·  containing copper
 C09B 45/20
·  ·  ·  containing cobalt
 C09B 45/22
·  ·  ·  containing other metals
 C09B 45/24
·  ·  Disazo and polyazo compounds
 C09B 45/26
·  ·  ·  containing chromium
 C09B 45/28
·  ·  ·  containing copper
 C09B 45/30
·  ·  ·  containing cobalt
 C09B 45/32
·  ·  ·  containing other metals
 C09B 45/34
·  Preparation from o-monohydroxy azo compounds having in the o1-position an atom or group other than OH, OR or COOH
 C09B 45/36
·  ·  by oxidation of hydrogen in o1 position
 C09B 45/38
·  Preparation from compounds with OH and COOH adjacent in the same ring or in peri position
 C09B 45/40
·  ·  Chromium compounds
 C09B 45/42
·  ·  Copper compounds
 C09B 45/44
·  ·  Cobalt compounds
 C09B 45/46
·  ·  Other metal compounds
 C09B 45/48
·  Preparation from other complex metal compounds of azo dyes
 C09B 47/00
Porphyrins; Phorphyrazines
 C09B 47/02
·  Tetrazaporphyrins
 C09B 47/04
·  ·  Phthalocyanines
 C09B 47/06
·  ·  ·  Preparation from carboxylic acids or their amides
 C09B 47/08
·  ·  ·  Preparation from other phthalocyanine compounds
 C09B 47/10
·  ·  ·  ·  by halogenation
 C09B 48/00
Quinacridones
 C09B 49/00
Sulphur dyes
 C09B 49/02
·  from nitro compounds of the benzene, naphthalene and anthracene series
 C09B 49/04
·  from amino compounds of the benzene, naphthalene and anthracene series
 C09B 49/06
·  from azines, oxazines, thiazines, and thiazoles
 C09B 49/08
·  from urea derivatives
 C09B 49/10
·  from diphenylamines, indamines, and indophenols
 C09B 49/12
·  from other compounds
 C09B 51/00 - 
C09B 62/00
Other organic dyes
 C09B 51/00
Nitro and nitroso dyes
 C09B 53/00
Quinone imides
 C09B 53/02
·  Indamines; Indophenols
 C09B 55/00
Azomethine dyes
 C09B 57/00
Other synthetic dyes of known constitution
 C09B 59/00
Artificial dyes of unknown constitution
 C09B 61/00
Dyes of natural origin prepared from natural sources
 C09B 62/00
Reactive dyes, i.e. dyes which form covalent bonds with the substrate
 C09B 62/02
·  with the reactive group directly attached to a heterocyclic ring
 C09B 62/04
·  ·  to a triazine ring
 C09B 62/06
·  ·  ·  Anthracene dyes
 C09B 62/08
·  ·  ·  Azo dyes
 C09B 62/10
·  ·  ·  Porphyrins; Porphyrazins
 C09B 62/12
·  ·  to a pyridazine ring
 C09B 62/14
·  ·  ·  Anthracene dyes
 C09B 62/16
·  ·  ·  Azo dyes
 C09B 62/18
·  ·  ·  Porphyrins; Porphyrazins
 C09B 62/20
·  ·  to a pyrimidine ring
 C09B 62/22
·  ·  ·  Anthracene dyes
 C09B 62/24
·  ·  ·  Azo dyes
 C09B 62/26
·  ·  ·  Porphyrins; Porphyrazins
 C09B 62/28
·  ·  to a pyrazine ring
 C09B 62/30
·  ·  ·  Anthracene dyes
 C09B 62/32
·  ·  ·  Azo dyes
 C09B 62/34
·  ·  ·  Porphyrins; Porphyrazins
 C09B 62/36
·  ·  to some other heterocyclic ring
 C09B 62/38
·  ·  ·  Anthracene dyes
 C09B 62/40
·  ·  ·  Azo dyes
 C09B 62/42
·  ·  ·  Porphyrins; Porphyrazins
 C09B 62/44
·  with the reactive group not directly attached to a heterocyclic ring
 C09B 62/46
·  ·  the reactive group being a halogen atom
 C09B 62/48
·  ·  ·  Anthracene dyes
 C09B 62/50
·  ·  ·  Azo dyes
 C09B 62/52
·  ·  ·  Porphyrins; Porphyrazins
 C09B 62/54
·  ·  the reactive group being an epoxy group
 C09B 62/56
·  ·  ·  Anthracene dyes
 C09B 62/58
·  ·  ·  Azo dyes
 C09B 62/60
·  ·  ·  Porphyrins; Porphyrazins
 C09B 62/62
·  ·  the reactive group being an ethylenimino or ethylenimido group
 C09B 62/64
·  ·  ·  Anthracene dyes
 C09B 62/66
·  ·  ·  Azo dyes
 C09B 62/68
·  ·  ·  Porphyrins; Porphyrazins
 C09B 62/70
·  ·  the reactive group being a C==C group, or an esterified or non-esterified hydroxyalkyl group (C09B 62/46 takes precedence)
 C09B 62/72
·  ·  ·  Anthracene dyes
 C09B 62/74
·  ·  ·  Azo dyes
 C09B 62/76
·  ·  ·  Porphyrins; Porhyrazins
 C09B 62/78
·  ·  with other reactive groups
 C09B 62/80
·  ·  ·  Anthracene dyes
 C09B 62/82
·  ·  ·  Azo dyes
 C09B 62/84
·  ·  ·  Porphyrins; Porphyrazins
 C09B 63/00 - 
C09B 67/00
Lakes; Mordants; Dyestuff preparations
 C09B 63/00
Lakes
 C09B 65/00
Compositions containing mordants (preparation of the mordant compound C01, C07)
 C09B 67/00
Influencing the physical, e.g. the dyeing or printing, properties of dyestuffs without chemical reaction, e.g. by treating with solvents; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films