US PATENT SUBCLASS 570 / 251
.~.~.~ All reactants in vapor phase

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

Internet Version by PATENTEC © 1999      Terms of Use


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}
251.~.~.~ All reactants in vapor phase

DEFINITION

Classification: 570/251

All reactants in vapor phase:

(under subclass 246) Process wherein all reactants are in the vapor phase in the reaction zone.