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    • 2. 发明授权
    • Simultaneous preparation of caprolactam and hexamethylenediamine
    • 同时制备己内酰胺和己二胺
    • US5717090A
    • 1998-02-10
    • US565214
    • 1995-11-30
    • Peter BasslerHermann LuykenGunther AchhammerTom WitzelEberhard FuchsRolf FischerWerner Schnurr
    • Peter BasslerHermann LuykenGunther AchhammerTom WitzelEberhard FuchsRolf FischerWerner Schnurr
    • C07D201/08
    • C07D201/08
    • Caprolactam and hexamethylenediamine are prepared simultaneously starting from adiponitrile by a process in which (a) adiponitrile is partially hydrogenated to give a mixture containing essentially 6-aminocapronitrile, hexamethylenediamine, ammonia, adiponitrile and hexamethyleneimine, (b) the mixture obtained in (a) is subjected to a distillation to give ammonia as the top product and a bottom product I, (c) the bottom product I containing essentially 6-aminocapronitrile, hexamethylenediamine, adiponitrile, hexamethyleneimine, inert compound A and ammonia, the ammonia content being lower than that of the mixture used in stage (b), is subjected to a second distillation to give a mixture comprising the inert compound A and ammonia as the top product and a bottom product II, (d) the bottom product II is subjected, in a third column, to a distillation to give the inert compound A as the top product and a bottom product III, (e) the bottom product III is subjected, in a fourth column, to a distillation to give a top product KP1, containing essentially hexamethyleneimine and a bottom product IV, (f) the top product KP1 is subjected, in a fifth column, to a distillation to give a top product KP2, which contains essentially hexamethyleneimine, and (g) the bottom product IV containing essentially 6-aminocapronitrile and adiponitrile is subjected, in a sixth column, to a distillation to give 6-aminocapronitrile, and the 6-aminocapronitrile thus obtained is then cyclized to give caprolactam.
    • 己二醇和六亚甲基二胺由己二腈通过以下方法同时制备,其中(a)己二腈部分氢化得到基本上含有6-氨基己腈,六亚甲基二胺,氨,己二腈和六亚甲基亚胺的混合物,(b)将(a)中得到的混合物 进行蒸馏以产生氨作为顶部产物,底部产物I,(c)含有基本上为6-氨基己腈,六亚甲基二胺,己二腈,六亚甲基亚胺,惰性化合物A和氨的底部产物I,氨含量低于 将阶段(b)中使用的混合物进行第二次蒸馏,得到包含惰性化合物A和氨作为顶部产物的混合物和底部产物II,(d)底部产物II经受第三塔 进行蒸馏,得到惰性化合物A作为顶部产物和底部产物III,(e)底部产物III在第四列中经受 蒸馏得到基本上为六亚甲基亚胺和底部产物IV的顶部产物KP1,(f)顶部产物KP1在第五个塔中进行蒸馏,得到基本上含有六亚甲基亚胺的顶部产物KP2,和(g )将含有基本上6-氨基己腈和己二腈的底部产物IV在第六塔中进行蒸馏以得到6-氨基己腈,然后将所得的6-氨基己腈环化,得到己内酰胺。
    • 5. 发明授权
    • Preparation of caprolactam
    • 己内酰胺的制备
    • US5495016A
    • 1996-02-27
    • US358411
    • 1994-12-19
    • Gunther AchhammerEberhard Fuchs
    • Gunther AchhammerEberhard Fuchs
    • C07D201/08C07D223/10
    • C07D201/08Y02P20/584
    • Caprolactam is prepared by reacting a solution of 6-aminocapronitrile with water in the liquid phase at elevated temperatures by a process in which(a) an aqueous solution of 6-aminocapronitrile in the liquid phase is heated without the addition of a catalyst in a reactor A to give a mixture I consisting essentially of water, caprolactam and a high-boiling fraction (high boiler), then(b) the water is removed from the resulting mixture I to give a mixture II consisting essentially of caprolactam and the high boilers, then(c) the caprolactam and the high boilers from mixture II are separated from one another by distillation, and then either(d1) the high boilers from stage (c) are fed into the reactor A of stage (a) or(d2) the high boilers are heated similarly to stage (a) in a further reactor B and then worked up similarly to stages (b) and (c) to give further caprolactam, or(d3) the high boilers are heated under reduced pressure in the presence of a base in a reactor C and the reacted mixture is worked up by distillation to give caprolactam.
    • 己内酰胺通过以下方法制备:在高温下使6-氨基己腈与水在液相中反应,其中(a)将液相中的6-氨基己腈水溶液加热而不在反应器中加入催化剂 A得到基本上由水,己内酰胺和高沸点馏分(高锅炉)组成的混合物I,然后(b)从所得混合物I中除去水,得到基本上由己内酰胺和高锅炉组成的混合物II, 然后(c)通过蒸馏将己内酰胺和来自混合物II的高沸点物彼此分离,然后(d1)将来自阶段(c)的高沸点物(d)进料到步骤(a)或(d2)的反应器A中, 类似于在另一个反应器B中的阶段(a)类似地加热高锅炉,然后类似于阶段(b)和(c)进行加工以得到进一步的己内酰胺,或(d3)在存在下在减压下加热高锅炉 的反应器C和反应器中的碱 通过蒸馏处理混合物以得到己内酰胺。
    • 6. 发明授权
    • Method of manufacturing a hydrogenation catalyst
    • 制造氢化催化剂的方法
    • US6083468A
    • 2000-07-04
    • US155908
    • 1998-10-08
    • Daniel HeinekeGunther AchhammerHeinz-Walter SchneiderAlfred Thome
    • Daniel HeinekeGunther AchhammerHeinz-Walter SchneiderAlfred Thome
    • B01J23/42B01J37/20C01B21/14C01C1/00
    • B01J23/42C01B21/1418
    • A hydrogenation catalyst is prepared by reduction of platinum in an oxidation state of not less than two using a reducing agent in an aqueous medium in the presence of a carbon-containing support after partial poisoning, where use is made of a compound of the general formula I ##STR1## where X, Y and Z can be identical or different and are hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.10 -cycloalkyl, halogen, hydroxyl, C.sub.1 -C.sub.6 -alkoxy and --NR'R", where R, R' and R" can be identical or different and can be hydrogen, C.sub.1 -C.sub.18 -alkyl or C.sub.5 -C.sub.10 -cycloalkyl. Such a hydrogenation catalyst can be used for preparing hydroxylammonium salts and the process for preparing the above catalysts can also be used for regenerating hydrogenation catalysts based on platinum.
    • PCT No.PCT / EP97 / 01617 Sec。 371日期:1998年10月8日 102(e)日期1998年10月8日PCT 1997年4月1日PCT PCT。 出版物WO97 / 37758 日期:1997年10月16日氢化催化剂是通过在部分中毒后在含碳载体存在下,在水性介质中使用还原剂还原不少于2的铂的氢化催化剂,其中使用 其中X,Y和Z可以相同或不同,为氢,C 1 -C 18 - 烷基,C 5 -C 10 - 环烷基,卤素,羟基,C 1 -C 6 - 烷氧基和-NR'R“的通式I化合物, 其中R,R'和R“可以相同或不同,并且可以是氢,C 1 -C 18 - 烷基或C 5 -C 10 - 环烷基。 这种氢化催化剂可用于制备羟铵盐,并且制备上述催化剂的方法也可用于再生基于铂的氢化催化剂。
    • 7. 发明授权
    • Process for the continuous preparation of pure 5-formyl valeric acid
esters
    • 连续制备纯5-甲酰戊酸酯的方法
    • US6030505A
    • 2000-02-29
    • US11096
    • 1998-01-27
    • Gunther AchhammerMichael Roper
    • Gunther AchhammerMichael Roper
    • C07C67/54C07C69/716B01D3/34
    • C07C67/54
    • 5-Formylvaleric esters are prepared in a yield of not less than 90% by distillation of a formylvaleric ester mixture of 5-formylvaleric ester and either 3- or 4-formylvaleric ester or a mixture of 3- and 4-formylvaleric esters, where the ester radicals of the respective formylvaleric esters are identical, wherein the 3- or 4-formylvaleric ester or a mixture thereof is separated from the 5-formylvaleric ester in a distillation column at a pressure in the range from 2 to 100 mbar and a temperature of not above 150.degree. C. (measured as the temperature at the bottom of the column) and the esters used are the corresponding methyl or ethyl esters, where the purity of the 5-formylvaleric ester is not less than 98% and, as impurity, 4-formylvaleric ester is present in an amount of not more than 100 ppm.
    • PCT No.PCT / EP96 / 03290 Sec。 371日期:1998年1月27日 102(e)日期1998年1月27日PCT提交1996年7月26日PCT公布。 出版物WO97 / 06126 日本19975年2月20日 - 通过蒸馏5-甲酰戊酸酯和3-甲酰基戊酸酯或3-和4-甲酰基戊酸酯的混合物的甲酰戊酸酯混合物,以不低于90%的产率制备甲酰基戊酸酯, 甲酰基戊酸酯,其中各自甲酰基戊酸酯的酯基是相同的,其中在蒸馏塔中将3-或4-甲酰基戊酸酯或其混合物与5-甲酰基戊酸酯在2至100的压力下分离 mbar,温度不高于150℃(以塔底温度测量),所用酯为相应的甲基或乙酯,其中5-甲酰基戊酸酯的纯度不低于98% 作为杂质,4-甲酰基戊酸酯的含量不超过100ppm。