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    • 10. 发明授权
    • Manufacture of butanedicarboxylic acid esters
    • 丁二羧酸酯的制造
    • US4171451A
    • 1979-10-16
    • US883216
    • 1978-03-03
    • Rudolf KummerHeinz-Walter SchneiderRolf PlatzPeter MagnussenFranz-Josef Weiss
    • Rudolf KummerHeinz-Walter SchneiderRolf PlatzPeter MagnussenFranz-Josef Weiss
    • C07C69/44B01J31/00C07B61/00C07C67/38C07C69/34
    • C07C69/34C07C67/38
    • A process for the manufacture of butanedicarboxylic acid esters, wherein(a) an aqueous cobalt salt solution is treated, at from 50.degree. to 200.degree. C. and under a pressure of from 50 to 500 bars, with excess carbon monoxide and hydrogen in the presence of active charcoal laden with cobalt carbonyl,(b) the resulting aqueous solution of cobalt carbonyl hydride is extracted with butadiene or with a hydrocarbon mixture containing butadiene and the aqueous phase is separated off,(c) the butadiene, or butadiene-hydrocarbon mixture, containing cobalt carbonyl hydride, cobalt carbonyl and butenyl-cobalt tricarbonyl is reacted with carbon monoxide and an excess of an alkanol of 1 to 4 carbon atoms in the presence of from 0.5 to 2 moles, per mole of butadiene, of a tertiary nitrogen base having a pK.sub.a of from 3 to 11, at from 80.degree. to 150.degree. C. under a pressure of from 300 to 2,000 bars, and(d) the resulting reaction mixture is freed from the tertiary nitrogen base contained therein, except for from 0.1 to 0.3 mole per mole of pentenoic acid ester, and from excess hydrocarbons, the pentenoic acid ester remaining in the reaction mixture is reacted with carbon monoxide and an excess of an alkanol of 1 to 4 carbon atoms at from 140.degree. to 200.degree. C. and under pressures of from 100 to 400 bars in the presence of the amounts of cobalt carbonyl and tertiary nitrogen base contained in the reaction mixture, and excess alkanol and free nitrogen base are then distilled off, and(e) the reaction mixture which remains, and which contains cobalt catalyst, the butanedicarboxylic acid ester and by-products is treated with an oxidizing agent in an aqueous acid medium and the mixture is separated into an organic phase, from which the butanedicarboxylic acid ester is isolated by distillation, and into an aqueous phase containing cobalt salts.Butanedicarboxylic acid esters may be used for the manufacture of adipic acid and of nylons.
    • 一种制备丁烷二羧酸酯的方法,其中(A)在50至200℃和50至500巴的压力下处理苛性钴盐溶液,其中过量的一氧化碳和氢气在 (B)碳酸氢盐的结晶水溶液是用丁二烯或含有二丁烯和水相的烃混合物分离的,(C)丁二烯或二苯乙烯混合物 ,含有碳酸氢二乙酯,碳酸氢钾和二苯乙酮三溴化硼与一氧化碳反应,另有1至4个碳原子的碱金属在0.5至2摩尔浓度范围内反应,每次可以达到丁二烯,碱性氮 在300至2,000巴的压力下具有3至11,80至150℃的PKa,以及(D)结合反应混合物来自含有其的碱性氮碱,除F 或从0.1至0.3毫升的硝酸酯和超级碳氢化合物,反应混合物中的硝酸酯反应在一氧化碳和超过1至4个碳原子的碱性物质在140°至200°的条件下反应 在反应混合物中所含的羰基钴和叔氮碱的量存在下,在100-400巴的压力下,然后蒸出过量的链烷醇和游离氮碱,和(E)反应混合物 剩余的,其中含有钴催化剂,溴化苹果酸酯和副产物与氧化剂在酸性介质中进行处理,并且混合物分离成有机相,其中通过蒸馏分离所述溴化乙酸酯,和 进入含有钴酸盐的水相。