Patent ID: 9227905
Filing Date: 2016-01-05
CPC Classification: C07C

Claim Text:
1. A process for the production of 4-chloroacetoacetyl chloride, comprising the steps of (a) feeding diketene and chlorine into a wiped film reactor and (b) reacting the diketene and chlorine to obtain 4-chloroacetoacetyl chloride, wherein in step (a) the diketene is fed into the reactor in the form of a mixture with an organic solvent, wherein the concentration of the diketene in the mixture is higher than 15% (w/w), wherein in step (a) the chlorine is fed into the reactor in the form of gaseous chlorine, wherein the chlorine is not diluted with an inert gas, and wherein the process is a continuous process, wherein the diketene is fed into the reactor at a rate of at least 10 kg/h.