US PATENT SUBCLASS 558 / 311
.~.~.~ Reactant is a carboxylic acid, or an amide, anhydride, ester, halide, or salt thereof

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
303  DF  .~ Nitriles (i.e., compounds having cyano bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {21}
308  DF  .~.~ Processes for forming the cyano group {7}
311.~.~.~ Reactant is a carboxylic acid, or an amide, anhydride, ester, halide, or salt thereof {2}
312  DF  .~.~.~.~> Utilizing a formamide, heavy metal salt, aluminum halide, organosilicon compound, organophosphorus compound, or a compound containing nitrogen and sulfur
313  DF  .~.~.~.~> Liquid phase reaction

DEFINITION

Classification: 558/311

(under subclass 308) Processes wherein a carboxylic acid, or an amide, anhydride, ester, halide, or salt thereof is utilized as a reactant.

(1) Note. An example of a process provided for herein is: The production of adiponitrile by vapor phase reaction of adipic acid and ammonia in the presence of a dehydration agent.