US PATENT SUBCLASS 560 / 338
.~.~.~ Processes for forming the isocyanate group


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {17}
330  DF  .~ Isocyanate esters (i.e., compounds containing the isocyanate group, -N=C=O, bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {7}
336  DF  .~.~ Processes {6}
338.~.~.~ Processes for forming the isocyanate group {9}
339  DF  .~.~.~.~> Cyanate reactant (i.e., reactant contains -OCN group)
340  DF  .~.~.~.~> Hetero ring containing reactant
341  DF  .~.~.~.~> Carbon monoxide utilized {1}
343  DF  .~.~.~.~> Azide reactant (i.e., reactant contains the azide group)
344  DF  .~.~.~.~> Reactant containing -NH-C(=O)-NH- group (wherein substitution may be made for hydrogen only)
345  DF  .~.~.~.~> Carbamate reactant (i.e., reactant contains -O-C(=O)-NH- group (wherein substitution may be made for hydrogen only)
346  DF  .~.~.~.~> Reactant containing nitrogen double or triple bonded to carbon (e.g., nitriles, isonitriles, cyanogen halides, etc.)
347  DF  .~.~.~.~> Carbonyl dihalide reactant (e.g., phosgene, etc.)
348  DF  .~.~.~.~> Carbamyl halide reactant (i.e., reactant contains halo-C(=O)-NH- group, wherein substitutuion may be made for hydrogen only)


DEFINITION

Classification: 560/338

(under subclass 336) Processes which involve the formation of the isocyanate group, -N=C=O.