US PATENT SUBCLASS 570 / 247
.~.~.~ Catalyst or reaction directing agent utilized

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
101  DF  .~ HALOGEN CONTAINING {21}
246  DF  .~.~ Preparing by addition of elemental halogen, interhalogen compound, or hydrogen halide to carbon to carbon unsaturation {2}
247.~.~.~ Catalyst or reaction directing agent utilized {1}
248  DF  .~.~.~.~> Hydrogen halide reactant {2}

DEFINITION

Classification: 570/247

Catalyst or reaction directing agent utilized:

(under subclass 246) Process including a catalyst which promotes the reaction or an agent which causes the addition to take place in a particular way to favor the production of one possible product over another.