| abstract |
Usage: fluoride vinylidene is used as a monomer upon receipt of polymeric materials. Conditions for preparation: pyrolysis of 1,1-difluoro-1-chloroethane in the presence of water vapor at 800-900ะก and contact time 0.1-0.2 s. It uses water vapor, pre-superheated to 900-1100C, which is mixed with 1,1-difluoro-1-fluoroethane before entering the pyrolysis zone in a molar ratio of 1-2: 1. The conversion is approximately 100%, the selectivity is 98.4%, the yield is 98.3%. 1 tab. |