公开(公告)号：JP2001162160A

公开(公告)日：2001-06-19

申请号：JP2000224857

申请日：2000-07-26

Applicant: BASF AG

Inventor： KAIBEL GERD DR ,  STROEZEL MANFRED ,  STAMMER ACHIM

IPC: B01J19/30 ,  B01J19/32 ,  B01J35/02 ,  F28C3/08

Abstract: PROBLEM TO BE SOLVED: To provide a packing structure capable of increasing the capacity and economical effect of the heat exchange and mass transfer. SOLUTION: At least one packing layer 1 having a first lower end 2 and a second upper end 3 is provided, and the packing layer has an internal geometrical pattern with the height between the lower and upper ends varied. Accordingly, a bubble layer having a gas phase with the dispersed state preferential is formed as desired by appropriately setting the flow velocity of the liquid and gas in the first, especially the lower, zone 6 of the layer 1, and a thin liquid laminar flow having a gas phase with the continuous state preferential is formed as required in the second, especially the upper, zone 7 of the layer 1 at the same time. A packing structure for the heat exchange and mass transfer between liquid and gas in a column provided with at least the one packing layer 1 is obtained in this way.

公开(公告)号：WO0147850A3

公开(公告)日：2002-06-06

申请号：PCT/EP0013328

申请日：2000-12-28

Applicant: BASF AG ,  DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  HAAKE MATHIAS ,  KOCH MICHAEL ,  SCHULZ GERHARD

Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  HAAKE MATHIAS ,  KOCH MICHAEL ,  SCHULZ GERHARD

IPC: C07B61/00 ,  C07C29/141 ,  C07C29/80 ,  C07C29/90 ,  C07C31/22

CPC classification number: C07C29/90 ,  C07C29/80 ,  Y02P20/582 ,  C07C31/20 ,  C07C31/22 ,  C07C31/245

Abstract: The invention relates to a method, whereby the colour number of polyhydric alcohols, in particular, trihydroxymethylpropane, can be significantly improved by hydrogenation. The method is characterized in that an alcohol is used in the hydrogenation, which has been previously purified by distillation. The conventional catalysts for hydrogenation are used as catalysts, preferably copper, nickel, palladium or ruthenium.

Abstract translation: 本发明涉及其中的多元醇，三羟甲基丙烷特别的颜色数，大大通过氢化改进的方法。 该方法的特征在于，醇在已经被通过蒸馏事先被精制加氢中使用。 使用的催化剂是在氢化反应中使用的常规催化剂，优选使用那些铜，镍，钯或钌的。

公开(公告)号：AT384710T

公开(公告)日：2008-02-15

申请号：AT05798084

申请日：2005-10-20

Applicant: BASF AG

Inventor： SIEGERT MARKUS ,  LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN

IPC: C07D323/06

Abstract: Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

公开(公告)号：CA2627080A1

公开(公告)日：2007-05-10

申请号：CA2627080

申请日：2006-10-27

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  SIEGERT MARKUS ,  LANG NEVEN ,  BOEHLING RALF ,  STAMMER ACHIM ,  OLDENBURG JAN

IPC: C08G2/10 ,  C07D317/12 ,  C07D319/00 ,  C07D323/06

Abstract: The invention relates to a process for producing trioxane and at least one comonomer for producing (co)polymers on a trioxane basis, in which, in a first step, formaldehyde and at least one comonomer starting material are reacted in aqueous solution to form trioxane and comonomer, wherein a reaction mixture A1 containing trioxane, comonomer, formaldehyde, water and if appropriate comonomer starting material is obtained. In a second step, the reaction mixture A1 is distilled in a first distillation stage at a first pressure, wherein a trioxane- and comonomer-enriched stream B1 and an essentially water- , formaldehyde- and if appropriate comonomer starting material-containing stream B2 are obtained. In a third step, the stream B1 is distilled in a second distillation stage at a pressure which is above the pressure of the first distillation stage, wherein a trioxane-, comonomer- and water-containing stream C1 and a product stream C2 essentially consisting of comonomer and trioxane are obtained.

公开(公告)号：DE102005037294A1

公开(公告)日：2007-02-15

申请号：DE102005037294

申请日：2005-08-08

Applicant: BASF AG

Inventor： LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  HASSE HANS ,  GRUETZNER THOMAS ,  BLAGOV SERGEJ

IPC: C07D323/06

Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A 2 comprising trioxane, water and formaldehyde. Stream A 2 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane, and the stream B 2 consisting substantially of water and formaldehyde. Stream B 1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C 2 consisting substantially of trioxane, and a stream C 1 comprising trioxane, water and formaldehyde. Stream C 1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D 1 comprising trioxane, water and formaldehyde, and a stream D 2 consisting substantially of water.

公开(公告)号：AU2004309046A1

公开(公告)日：2005-07-14

申请号：AU2004309046

申请日：2004-12-21

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  SIEGERT MARKUS ,  HASSE HANS ,  STAMMER ACHIM ,  LANG NEVEN ,  FRIESE THORSTEN

IPC: C07D323/06

Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.

公开(公告)号：MXPA02006358A

公开(公告)日：2002-11-29

申请号：MXPA02006358

申请日：2000-12-27

Applicant: BASF AG

Inventor： STAMMER ACHIM

IPC: C07B61/00 ,  C07C29/14 ,  C07C31/22 ,  C07C45/75 ,  C07C45/82 ,  C07C45/83 ,  C07C45/86 ,  C07C47/058 ,  C07C47/19

Abstract: La invencion se refiere a un metodo para la separacion por destilacion del formaldehido, desde mezclas de reaccion que contienen un alcanal hidroximetilado, dicha mezcla se obtiene de la reaccion del formaldehido con un alcanal, el cual comprende al menos un proton acido, en una posicion a la funcion le carbonilo, o la reaccion de una 2- alquilacroleina o la acroleina, con agua y formaldehido, por lo cual dicha reaccion se conduce en la presencia de cantidades cataliticas de una amina organica. La invencion se caracteriza ademas porque antes y/o durante la destilacion, se agrega una cantidad adecuada de agua. El metodo permite una separacion mejorada de formaldehido desde la mezcla de reaccion y, asimismo, permite una hidrogenacion mas facil de los alcanales obtenidos asi para suministrar los polioles.

公开(公告)号：MXPA02006295A

公开(公告)日：2002-11-29

申请号：MXPA02006295

申请日：2000-12-28

Applicant: BASF AG

Inventor： STAMMER ACHIM

IPC: C07B61/00 ,  C07C29/141 ,  C07C29/80 ,  C07C29/90 ,  C07C31/22

Abstract: La invencion describe un metodo, por el cual el numero de color de los alcoholes polihidricos, en particular, el trihidroximetilpropano, se pueden mejorar de 'una manera significativa por medio de la hidrogenacion. El metodo se caracteriza porque se usa un alcohol en la hidrogenacion, que se ha purificado previamente por destilacion. Los catalizadores convencionales para la hidrogenacion se usan como catalizadores, preferiblemente el cobre, el niquel, el paladio o el rutenio.

公开(公告)号：DE59708146D1

公开(公告)日：2002-10-10

申请号：DE59708146

申请日：1997-12-04

Applicant: BASF AG

Inventor： KRATZ DETLEF ,  STAMMER ACHIM ,  SCHULZ GERHARD ,  VOIT GUIDO

IPC: C07B61/00 ,  C07C29/141 ,  C07C29/80 ,  C07C31/22 ,  C07C45/75 ,  C07C47/19

Abstract: Methylolalkanal of the formula II(R=CH2OH, C1-C22-alkyl, aryl or C6-C22-aralkyl) is prepared spe-wise bya) reacting a C2-C24-aldehyde with formaldehyde in the presence of a tertiary amine,b) separating the reaction mixturei) into a bottom fraction comprising the compound of formula II and an incompletely methylolated compound of the formula IIIand a distillate stream comprising unconverted or partially converted starting materials, orii) into an aqueous phase and an organic phase, and recycling the distillate stream or the organic phase to a), andc) subjecting the bottom fraction or the aqueous phasei) to a catalytic or thermal reaction to convert the compound of formula III to the compound of formula II and to a corresponding methylene compound of formula IV(R'=H or R) andii) separating the reaction product into an overhead stream comprising the compound of formula IV and unconverted formaldehyde which is recycled to a), and a bottom fraction comprising the compound of formula II.

公开(公告)号：BR0016759A

公开(公告)日：2002-09-24

申请号：BR0016759

申请日：2000-12-21

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SCHULZ GERHARD

IPC: C07B61/00 ,  C07C29/80 ,  C07C31/22 ,  C07C29/141

Abstract: A process is disclosed for the purification, by distillation, of trimethylolpropane originating from the hydrogenation of 2,2-dimethylolbutanal, said process including the following steps:(a) reaction of n-butyraldehyde with formaldehyde in the presence of catalytic amounts of a tertiary amine, and hydrogenation of the resulting mixture to give a mixture containing trimethylolpropane;(b) separation of water, methanol, trialkylamine and/or trialkylammonium formate by distillation;(c) heating of the residue obtained in (b) under reduced pressure to a temperature at which TMP is volatile and compounds boiling above TMP are cleaved, in order to separate off, by distillation, TMP and compounds more volatile than TMP;(d) distillation of the distillate obtained in (c) in order to separate off the more volatile compounds and recover pure TMP; and(e) optional distillation of the TMP obtained in (d) in order to recover TMP with a low APHA color index.A process is also disclosed in which trialkylammonium formate is distilled under mild conditions from crude mixtures of polyhydric alcohols, predominantly trimethylolpropane.