Process for the preparation of isophoronediamine
    11.
    发明授权
    Process for the preparation of isophoronediamine 失效
    异佛尔酮二胺的制备方法

    公开(公告)号:US5504254A

    公开(公告)日:1996-04-02

    申请号:US361383

    申请日:1994-12-22

    摘要: A process is disclosed for the continuous preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine (isophoronediamine) in high yield and high purity from 3-cyano-3,5,5-trimethylcyclohexanone (isophoronenitrile) by aminating hydrogenation with hydrogen and ammonia in the presence of a fixed bed catalyst. The aminating hydrogenation is carried out by allowing a mixture of isophoronenitrile, ammonia and a C.sub.1 -C.sub.3 -alcohol, in the presence of hydrogen, to trickle over a trickle bed reactor provided with a Co and/or Ru fixed bed catalyst, at 3 to 8 MPa and at a temperature of 40.degree. to 150.degree. C., preferably 90 to 130.degree. C., and working up the reaction mixture by distillation. Preferably, a high-boiling by-product fraction, containing a bicyclic amidine, is added to the mixture to be hydrogenated, thereby appreciably increasing the yield.

    摘要翻译: 公开了通过用氢气加氢氢化从3-氰基-3,5,5-三甲基环己酮(异佛尔酮腈)连续制备高产率和高纯度的3-氨基甲基-3,5,5-三甲基环己胺(异佛尔酮二胺)的方法, 氨在固定床催化剂存在下进行。 胺化氢化通过在氢气存在下使异佛尔酮腈,氨和C1-C3-醇的混合物在3〜3℃滴加到具有Co和/或Ru固定床催化剂的滴流床反应器上进行, 8MPa,温度为40〜150℃,优选为90〜130℃,通过蒸馏处理反应混合物。 优选地,将含有双环脒的高沸点副产物级分加入待氢化的混合物中,从而明显地提高了产率。

    Process for the simultaneous production of 1,2- and 1,3-propanediol
    12.
    发明授权
    Process for the simultaneous production of 1,2- and 1,3-propanediol 失效
    同时生产1,2-和1,3-丙二醇的方法

    公开(公告)号:US5426249A

    公开(公告)日:1995-06-20

    申请号:US151389

    申请日:1993-11-12

    摘要: A process is described for the simultaneous production of 1,2- and 1,3-propanediol from glycerol. The process involves the reaction stages (a) dehydration of glycerol by feeding a gaseous glycerol-water mixture with 10 to 40 wt % glycerol at 250.degree. to 340.degree. C. over a solid catalyst with an H.sub.0 value (Hammett acidity function) of less than 2, preferably between -3 and -8.2, (b) hydration of the acrolein contained in the reaction mixture of stage (a), and (c) catalytic hydrogenation of the reaction mixture, containing 3-hydroxypropionaldehyde and hydroxyacetone, of stage (b). Two valuable products, namely 1,2- and 1,3-propanediol, can be obtained simultaneously and in high total yield from glycerol in a simple process.

    摘要翻译: 描述了从甘油同时生产1,2-和1,3-丙二醇的方法。 该方法包括反应阶段(a)通过在250℃至340℃下通过在H 2值(哈米特酸度函数)较小的固体催化剂上加入含有10至40重量%甘油的气态甘油 - 水混合物来脱水甘油 (b)使步骤(a)的反应混合物中所含的丙烯醛水合,(c)含有3-羟基丙醛和羟基丙酮的反应混合物的催化氢化 b)。 两个有价值的产物,即1,2-和1,3-丙二醇,可以在一个简单的过程中同时获得,并以高的总收率由甘油获得。

    Process for the preparation of 1,3-propanediol
    15.
    发明授权
    Process for the preparation of 1,3-propanediol 失效
    1,3-丙二醇制备方法

    公开(公告)号:US5364987A

    公开(公告)日:1994-11-15

    申请号:US86040

    申请日:1993-07-06

    摘要: 1,3-propanediol (PD) is obtained by hydration of acrolein to 3-hydroxypropionaldehyde (HPA) with subsequent catalytic hydrogenation; 3,3'-oxybis-1-propanol (OD) occurs as a yield-reducing by-product. Disclosed is a process which increases the 1,3-propanediol yield. The OD which is separated by distillation during treatment of the reaction mixture containing PD and OD is treated in aqueous solution at from 100 to 300.degree. C. with an acid solid catalyst, in particular an acid zeolite, and the reaction mixture from which the solid catalyst has been removed is returned into the treatment stage of the reaction mixture containing PD and OD.

    摘要翻译: 通过将丙烯醛水合成3-羟基丙醛(HPA)并随后进行催化氢化获得1,3-丙二醇(PD) 3,3'-氧基双-1-丙醇(OD)作为产率降低副产物发生。 公开了增加1,3-丙二醇产率的方法。 在含有PD和OD的反应混合物的处理期间通过蒸馏分离的OD在100-300℃的水溶液中用酸固体催化剂,特别是酸性沸石和固体的反应混合物处理 已经除去的催化剂返回到含有PD和OD的反应混合物的处理阶段。

    Process for the prepartion of 3-hydroxyalkanals
    16.
    发明授权
    Process for the prepartion of 3-hydroxyalkanals 失效
    3-羟基卡那酸的制备方法

    公开(公告)号:US5284979A

    公开(公告)日:1994-02-08

    申请号:US980955

    申请日:1992-11-24

    CPC分类号: C07C29/141 C07C45/64

    摘要: A process is disclosed for the preparation of 3-hydroxyalkanals having 3 to 12 carbon atoms, in particular 3 or 4 carbon atoms, by hydration of the underlying 2-alkenals with water in a homogeneous phase in the presence of an acid catalyst. The previously known hydration using mineral acids or carboxylic acids as catalyst results in low volume/time yields and/or low selectivities. These disadvantages can be avoided by using in the present invention, as catalyst, a dissolved acid-base buffer which results in a pH of from 2 to 5 in the reaction mixture; the acid component and corresponding base of which are present in a total quantity of from 0.5 to 40% by weight in the reaction mixture. The preferred buffers composed of a lower monobasic carboxylic acid and a tertiary amine can easily be recycled.

    摘要翻译: 公开了制备具有3-12个碳原子,特别是3或4个碳原子的3-羟基卡那醇的方法,通过在酸催化剂存在下,使水相在均相上与下面的2-烯烃水合。 使用无机酸或羧酸作为催化剂的先前已知的水合导致低体积/时间产率和/或低选择性。 通过在本发明中使用在反应混合物中导致pH为2至5的溶解的酸碱缓冲液作为催化剂,可以避免这些缺点。 酸组分和其相应的碱在反应混合物中的总量为0.5-40重量%。 由较低一元羧酸和叔胺组成的优选缓冲液可以容易地再循环。

    Process for preparing 3-hydroxyalkanals
    18.
    发明授权
    Process for preparing 3-hydroxyalkanals 失效
    3-羟基卡那啶的制备方法

    公开(公告)号:US5962745A

    公开(公告)日:1999-10-05

    申请号:US22011

    申请日:1998-02-11

    摘要: A process for preparing 3-hydroxyalkanals having 3 to 12 carbon atoms by hydration of 2-alkenals with homogeneous catalysis, by using as catalyst a compound corresponding to the formula ##STR1## wherein: z denotes H, C.sub.1 - to C.sub.6 -alkyl, --CH.sub.2 --CH(CH.sub.3) --Y' or --(CH.sub.2).sub.o --Y'R denotes H, C.sub.1 - to C.sub.6 -alkyl, benzyl, phenyl, .omega.-hydroxy --C.sub.1 - to C.sub.6 -alkyl, --CH.sub.2 --CH(CH.sub.3)--Y' or --(CH.sub.2).sub.o --Y'Y and Y' are identical or different and denote --COOH, --P(O) (OH).sub.2, --OH, pyridyl, or --P(O) (CH.sub.2 OH)OH, wherein the acid functional group may be present partly in the form of its alkali metal salt, alkaline-earth salt or ammonium saltn denotes 1, 2, 3, 4, 5 or 6 where Y is --COOH, --P(O) (OH).sub.2, pyridyl or --P(O) (CH.sub.2 OH) OH; 2 or 3 where Y is --OHo denotes 1, 2, 3, 4, 5 or 6 where Y' is --COOH, --P(O) (OH).sub.2, pyridyl or --P(O) (CH.sub.2 OH)OH; 0, 2 or 3 where Y' is --OH.

    摘要翻译: 通过使用相应于下式的化合物作为催化剂,通过使用具有均相催化作用的2-烯烃水合制备具有3至12个碳原子的3-羟基烷烃的方法其中:z表示H,C1-至C6烷基,-CH2-CH (CH 3)-Y'或 - (CH 2)o-Y'R表示H,C 1至C 6烷基,苄基,苯基,ω-羟基-C 1至C 6 - 烷基,-CH 2 -CH(CH 3) '或 - (CH 2)o Y'Y和Y'相同或不同,表示-COOH,-P(O)(OH)2,-OH,吡啶基或-P(O)(CH 2 OH)OH,其中酸 官能团可以部分以其碱金属盐,碱土盐或铵盐的形式存在,n表示1,2,3,4,5或6,其中Y是-COOH,-P(O)(OH)2 ,吡啶基或-P(O)(CH 2 OH)OH; 2或3,其中Y是-OH o表示1,2,3,4,5或6,其中Y'是-COOH,-P(O)(OH)2,吡啶基或-P(O)(CH 2 OH)OH; 0,2或3,其中Y'是-OH。