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 com-prises vaporizing dimethyl 2-acetoxyethanephosphonate and dissociating it without catalysis at temperatures of from 400 to 700.degree.C into dimethyl vinylphosphonate and acetic acid.