US PATENT SUBCLASS 564 / 331
.~.~.~.~.~ Preparing by reacting carbonyl containing compound with amino nitrogen containing compound

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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  DF  .~.~.~.~ Diamino diphenyl methanes (i.e., two phenyls, each having amino nitrogen bonded directly thereto, bonded directly to the carbon) {3}
331.~.~.~.~.~ Preparing by reacting carbonyl containing compound with amino nitrogen containing compound {2}
332  DF  .~.~.~.~.~.~> Solid catalyst utilized
333  DF  .~.~.~.~.~.~> Hydrochloric acid utilized

DEFINITION

Classification: 564/331

(under subclass 330) Processes wherein an amino nitrogen containing compound is condensed with an aldehyde or ketone, as for example, the condensation of formaldehyde or acetone with aniline.

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