<p>A method for the manufacture of bisphenols comprises introducing a combined feed stream comprising a feed stream and a recycle stream into a reactor system comprising at least one reactor containing a catalytic proportion of an acid catalyst and wherein the combined feed stream comprises a carbonyl compound and a stoichiometric excess of phenol; removing from the reactor system a reactor effluent; splitting the reactor effluent into a crystallization feed stream and an effluent recycle stream; extracting from said crystallization feed stream a bisphenol adduct, remainder comprising a mother liquor stream; dehydrating said mother liquor stream and said effluent recycle stream in a dehydrator wherein excess water and carbonyl compound are removed; and recycling the dehydrated mother liquor and the dehydrated effluent recycle stream back to the combined feed stream to effect improved production of p,p-bisphenol, along with increased reactor selectivity and reduced promoter quantities.</p>
申请公布号
WO2004058673(A1)
申请公布日期
2004.07.15
申请号
WO2003US40436
申请日期
2003.12.17
申请人
GENERAL ELECTRIC COMPANY;OYEVAAR, MARTIN, HERKE;PEEMANS, RUDY, FRANCOIS, ALAIN, JOS;SCHLARMANN, EDUARD, HENDRICUS