US PATENT SUBCLASS 564 / 330
.~.~.~.~ Diamino diphenyl methanes (i.e., two phenyls, each having amino nitrogen bonded directly thereto, bonded directly to the carbon)


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
305  DF  .~.~ Benzene ring containing {24}
315  DF  .~.~.~ Two aryl rings or ring systems bonded directly to the same carbon {7}
330.~.~.~.~ Diamino diphenyl methanes (i.e., two phenyls, each having amino nitrogen bonded directly thereto, bonded directly to the carbon) {3}
331  DF  .~.~.~.~.~> Preparing by reacting carbonyl containing compound with amino nitrogen containing compound {2}
334  DF  .~.~.~.~.~> Purification or recovery
335  DF  .~.~.~.~.~> Halogen or sulfur attached directly or indirectly to the carbon by nonionic bonding


DEFINITION

Classification: 564/330

(under subclass 315) Compounds wherein two phenyl groups, each having an amino nitrogen directly attached, are directly bonded to the same carbon (i.e., diamino diphenyl methanes).

(1) Note. This subclass contains, for example: [figure] [figure]