Process for preparing dimethyl vinylphosphonate from dimethyl 2-acetoxyethanephosphonate

摘要

The invention relates to a process for preparing dimethyl vinylphosphonate by thermal dissociation of dimethyl 2-acetoxyethanephosphonate in the gas phase, which comprises vaporizing dimethyl 2-acetoxyethanephosphonate and dissociating it without catalysis at a temperature of from 400 DEG to 700 DEG C. into dimethyl vinylphosphonate and acetic acid.