Azo Patents (Class 534/573)
- Formation of quaternary ammonium or hydrazinium group (Class 534/589)
- Ring formation (Class 534/590)
- Formation of -C(=X)HNH group, wherein X is chalcogen (substitution may be made for hydrogen only) (Class 534/591)
- Formation of sulfonamide group (Class 534/592)
- Additional reactant containing phosphorus or sulfur (Class 534/593)
- Formation of -C(=X)X- ester group, wherein the X's may be the same or diverse chalcogens (Class 534/595)
- Etherification of hydroxy group (Class 534/596)
- Replacement of halogen by cyano group (Class 534/597)
- Replacement of halogen by amino nitrogen (Class 534/598)
- Hydrolysis (Class 534/599)
- Reduction of nitro or nitrogen oxide group (Class 534/600)
- Nitration (Class 534/601)
- Metallization of the azo reactant in presence of an additional organic compound (Class 534/602)
- Formazan containing (i.e., HNH-N=CH-N=NH, wherein substitution may be made for hydrogen only) (Class 534/618)
- Heavy metal or aluminum containing (Class 534/619)
- Halogen attached directly to a hetero ring or to an alicyclic ring by nonionic bonding (Class 534/630)
- Aziridine containing (including unsaturated) (Class 534/639)
- Alkylene, alkenyl, alkenylene, alkynyl or alkynylene attached directly or indirectly to a ring by nonionic bonding (Class 534/640)
- Heavy metal or aluminum containing (Class 534/661)
- Hetero ring containing (Class 534/664)
- At least three azo groups attached indirectly to each other by nonionic bonding (Class 534/666)
- Two azo groups attached indirectly to each other by nonionic bonding (Class 534/670)
- Sulfonic acid group containing (-(O=)S(=O)-OH, wherein H of -OH may be replaced by a substituted or unsubstituted ammonium ion or metal) (Class 534/674)
- Amine salt (Class 534/693)
- Arsenic containing (Class 534/694)
- Azo moiety and moiety which contains acyclic -CH=N- group bonded to the same metal (Class 534/695)
- Diverse azo moieties bonded to the same metal (Class 534/696)
- Azo bonded directly to an acyclic carbon which is bonded directly to two acyclic carbons, each of which is double or triple bonded to an atom (Class 534/700)
- Hetero ring containing (Class 534/701)
- Benzene ring containing (Class 534/713)
- Hetero ring or polycyclo ring system which contains a hetero ring as one of the cyclos bonded directly to an azo group (Class 534/740)
- Hetero ring attached indirectly to an azo group by nonionic bonding (Class 534/741)
- At least three azo groups attached indirectly to each other by nonionic bonding (Class 534/743)
- Two azo groups attached indirectly to each other by nonionic bonding (Class 534/744)
- Sulfonyl bonded directly to nitrogen (Class 534/749)
- Having -C(=X)-, wherein X is chalcogen, attached indirectly by nonionic bonding to the acyclic carbon to which the other two acyclic carbons are bonded (Class 534/750)
- Polycyclo ring system having a hetero atom shared by at least two rings or at least two hetero atoms which are not members of the same ring (Class 534/752)
- Azo bonded directly to the hetero ring or to a polycyclo ring system which contains the hetero ring as one of the cyclos (Class 534/753)
- At least three azo groups attached indirectly to each other by nonionic bonding (Class 534/796)
- Two azo groups attached indirectly to each other by nonionic bonding (Class 534/797)
- Plural carbocyclic rings bonded directly to the azo group (Class 534/798)
- Plural benzene rings bonded directly to the same urea or thiourea group and are between the azo groups (Class 534/817)
- Plural benzene rings bonded directly to the same carboxamide or sulfonamide group and are between the azo groups (Class 534/819)
- Plural benzene rings bonded directly to the same chalcogen or -C(=X)- group, wherein X is chalcogen, and are between the azo groups (Class 534/821)
- Plural benzene rings bonded directly to each other and are between the azo groups (Class 534/822)
- Hydroxy bonded directly to a bicyclo ring system which is between the azo groups (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal) (Class 534/827)
- Containing -C(=X)-, wherein X is chalcogen (e.g., carbonyl, etc.) (Class 534/829)
- Plural benzene rings bonded directly to each azo group (Class 534/831)