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    • 3. 发明申请
    • PROCESS FOR MANUFACTURE OF BISPHENOLS
    • 双酚的制备方法
    • WO2004058673A1
    • 2004-07-15
    • PCT/US2003/040436
    • 2003-12-17
    • GENERAL ELECTRIC COMPANYOYEVAAR, Martin, HerkePEEMANS, Rudy, Francois, Alain, JosSCHLARMANN, Eduard, Hendricus
    • OYEVAAR, Martin, HerkePEEMANS, Rudy, Francois, Alain, JosSCHLARMANN, Eduard, Hendricus
    • C07C37/20
    • C07C37/84C07C37/20C07C39/16
    • 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.
    • 制备双酚的方法包括将包含进料流和再循环料流的组合进料流引入包含至少一个含有催化剂比例的酸催化剂的反应器的反应器系统中,其中组合进料流包含羰基化合物和 化学计量过量的苯酚; 从反应器系统中除去反应器流出物; 将反应器流出物分解成结晶进料流和流出物再循环流; 从所述结晶进料流中提取双酚加合物,其余包含母液流; 在脱水器中脱水所述母液流和所述废水再循环流,其中除去过量的水和羰基化合物; 并将脱水的母液和脱水的废液再循环物流再循环回到组合的进料流中,以改善p,p双酚的生产,同时增加反应器的选择性和减少的助催化剂量。