Selective removal of catechol from 2-methallyloxyphenol
申请人:FMC Corporation
公开号:EP0086969A2
公开(公告)日:1983-08-31
A process is disclosed for selectively removing catechol from a mixture comprising catechol, 2-methallyloxyphenol, various salts, and by-products by treating the mixture with aqueous base, the aqueous phase being preferably saturated with respect to salts present; the catechol may then be recovered for recycle by acidifying the resulting aqueous phase and extracting the acidified aqueous phase with a suitable organic solvent.
Process for preparation of 2,3-dihydro-2,2-dimethyl-7-hydroxybenzofuran
申请人:FMC Corporation
公开号:EP0090679A1
公开(公告)日:1983-10-05
A process for preparing 2,3-dihydro-2,2-dimethyl-7-hy- droxybenzofuran in which 2-methallyloxyphenol is heated to a temperature in the range of 150°C to 250°C in the presence of a solvent and a Lewis acid catalyst under an autogenous pressure of 20 to 60 psig is disclosed and exemplified.
The present invention provides novel silicone compositions comprising phenol-modified branched and cyclic silicones which provide improved low temperature viscosity properties.