Patent ID: 9708230
Date: 2017-07-18
CPC Classifications: C07C

Claim:
1. A process for producing biphenyl compounds, the process comprising: (a) contacting a hydroalkylation feed comprising C (b) providing at least a portion of the hydroalkylation reaction effluent to a first dehydrogenation zone, therein dehydrogenating at least a portion of the C (c) separating the first dehydrogenation reaction product into (i) a heavy dehydrogenation stream rich in the C (d) providing at least a portion of the light dehydrogenation stream to a second dehydrogenation zone separate from the first dehydrogenation zone; and (e) in the second dehydrogenation zone, dehydrogenating at least a portion of the unreacted C wherein: in step (a), the C the C the C in step (b), the C the recovered C the unreacted C in step (e), the additional recovered C wherein the dehydrogenating (e) takes place in the presence of less than about 5.0 wt % C