US PATENT SUBCLASS 534 / 573
.~ Azo


Current as of: June, 1999
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534 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) {8}
573.~ Azo {51}
574  DF  .~.~> Quaternary azo group containing
575  DF  .~.~> Specified crystalline form
576  DF  .~.~> With preservative or stabilizer
577  DF  .~.~> Liquid crystal (e.g., pleochroic, etc.)
578  DF  .~.~> Formation of azo group by oxidative coupling
579  DF  .~.~> Formation of azo group by simultaneous diazotization and coupling
580  DF  .~.~> Formation of azo group from diazoamino group
581  DF  .~.~> Formation of azo group by coupling diazonium compound with coupling component in presence of an additional organic compound
582  DF  .~.~> Formation of azo group by coupling diazonium compound with coupling component at a specified pH range
583  DF  .~.~> Formation of azo group by coupling diazonium compound with coupling component in presence of ammonia, a Group IIA light metal hydroxide or a Group IA or IIA light metal phosphate
584  DF  .~.~> Formation of azo group by coupling diazonium compound with coupling component in other than stoichiometric proportions
585  DF  .~.~> Formation of azo group by reduction of nitro group
586  DF  .~.~> Formation of azo group from group having nitrogen single bonded to nitrogen
587  DF  .~.~> Formation of azo group directly from nitrogen containing compound by process other than diazotization and coupling
588  DF  .~.~> Process utilizing azo compound as reactant {13}
603  DF  .~.~> Quaternary ammonium or hydrazinium attached indirectly to an azo group by nonionic bonding {4}
616  DF  .~.~> Nitrogen oxide, other than as nitro or nitroso, containing
617  DF  .~.~> Fiber- or substrate-reactive azo compound {5}
645  DF  .~.~> Plural sulfonyl groups bonded directly to same amino nitrogen (e.g., sulfonylaminosulfonyl, etc.)
646  DF  .~.~> Sulfonyl and carbonyl bonded directly to the same amino nitrogen (e.g., sulfonylaminocarbonyl, etc.)
647  DF  .~.~> Plural amino nitrogens bonded directly to the same sulfonyl (e.g., aminosulfonylamino, etc.)
648  DF  .~.~> Alkyl, having at least eight carbons specified, or plural alkyl chains, each having at least five carbons specified, bonded directly to a ring, which ring is attached directly or indirectly to an acyclic carbon chain, which chain is bonded directly to a urea or carboxamide nitrogen that is between the chain and an additional ring
649  DF  .~.~> Alkyl chain having at least eight carbons specified bonded directly to a ring
650  DF  .~.~> Sulfonyl or -C(=X)-, wherein X is chalcogen, between a ring and an alkyl chain having at least eight carbons specified {1}
652  DF  .~.~> Formazan containing (i.e., HNH-N=CH-N=NH, wherein substitution may be made for hydrogen only)
653  DF  .~.~> Polycyclo carbocyclic ring system having at least three cyclos {3}
659  DF  .~.~> Bicyclo carbocyclic ring system consisting of a six-membered ring and a five-membered ring (e.g., indane, etc.
660  DF  .~.~> Hydroxy and carbonyl of -C00- bonded directly to a monocyclic benzene ring (H or hydroxy may be replaced by a substituted or unsubstituted ammonium ion or a metal) {5}
676  DF  .~.~> Plural -HNH groups or -OH and -HNH bonded directly to a monocyclic benzene ring (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or metal) {2}
682  DF  .~.~> Plural hydroxy groups or esters thereof bonded directly to a monocyclic benzene ring (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or metal) {1}
689  DF  .~.~> Stilbene containing {2}
692  DF  .~.~> Heavy metal or aluminum containing {7}
726  DF  .~.~> Boron or silicon containing
727  DF  .~.~> Phosphorus attached indirectly to an azo group by nonionic bonding
728  DF  .~.~> Amine salt
729  DF  .~.~> Chain containing at least fifteen alkylene oxide groups
730  DF  .~.~> Sulfonic acid ester group containing {1}
732  DF  .~.~> Nitrogen, other than as azo, and chalcogen or -C(=X)X- bonded directly to a -C(=X)- group, wherein the X's may be the same or diverse chalcogens (e.g., carbamic, allophanic, etc.) {1}
734  DF  .~.~> Halogen bonded directly to sulfur or to a -C(=X)- group, wherein X is chalcogen
735  DF  .~.~> Containing acyclic -XCN or -NCX, wherein X is chalcogen (e.g., thiocyanato, isocyanato, etc.)
736  DF  .~.~> Thiosulfuric acid group containing (-S-(0=)S(=0)-OH, wherein H of the -OH may be replaced by the ammonium ion or Group IA or IIA light metal)
737  DF  .~.~> Cyano and carbon bonded directly to acyclic nitrogen
738  DF  .~.~> Acyclic chain which contains -CH=N- (substitution may be made for hydrogen only)
739  DF  .~.~> Azo bonded directly to an acylic carbon which is bonded directly to two acyclic carbons, each of which is double or triple bonded to an atom {6}
751  DF  .~.~> Hetero ring containing {5}
805  DF  .~.~> Exactly five or exactly six azo groups attached indirectly to each other by nonionic bonding
806  DF  .~.~> Exactly four azo groups attached indirectly to each other by nonionic bonding {2}
809  DF  .~.~> Exactly three azo groups attached indirectly to each other by nonionic bonding {3}
816  DF  .~.~> Exactly two azo groups attached indirectly to each other by nonionic bonding {7}
838  DF  .~.~> Exactly one azo group containing or azo attached indirectly to an additional azo group by ionic bonding {3}
887  DF  .~.~> Purification or recovery


DEFINITION

Classification: 534/573

(under subclass 1) Compounds under Class 532, ... in which an acyclic -N=N- group is bonded directly to carbons of two discrete organic radicals.

(1) Note. Compounds which contain a -N=N- group bonded directly to the same carbon or to two carbons of the same radical thereby forming a heterocyclic ring are classified in the appropriate heterocyclic class.