公开(公告)号：DE19642770A1

公开(公告)日：1998-04-23

申请号：DE19642770

申请日：1996-10-16

Applicant: BASF AG

Inventor： FISCHER MARTIN DR ,  KAIBEL GERD DR ,  STAMMER ACHIM DR ,  FLICK KLEMENS DR ,  QUAISER STEFAN DR ,  HARDER WOLFGANG DR ,  MASSONNE KLEMENS DR

IPC: B01J8/04 ,  B01J19/24 ,  B01J19/26 ,  C01B15/029 ,  C01B15/01

Abstract: The present invention relates to a process for the manufacture of hydrogen peroxide solutions with a hydrogen peroxide content of at least 2.5 wt % by continual reaction of hydrogen and oxygen in an aqueous or alcoholic reaction medium on catalyst shaped bodies containing palladium.

公开(公告)号：DE19653093A1

公开(公告)日：1998-06-25

申请号：DE19653093

申请日：1996-12-20

Applicant: BASF AG

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

IPC: C07B61/00 ,  C07C29/141 ,  C07C29/80 ,  C07C31/22 ,  C07C45/75 ,  C07C47/19 ,  C07C31/18 ,  C07C29/14 ,  C07C29/34

Abstract: The invention relates to a method for producing polymethylol compounds of formula (I), in which R represents a further methylol group or an alkyl group with between 1 and 22 C atoms or an aryl or alkyl aryl group with between 6 and 22 C atoms, by condensating aldehydes with between 2 and 24 C atoms with formaldehyde, using tertiary amines as catalysts, with a view to obtaining compounds of formula (II), in which R has the meaning assigned to it above. The invention further relates to a process for hydrogenating polymethylol compounds by condensation in stages. For this, a) in a first (reaction) stage, the aldehydes with 2 or more C atoms are reacted with 2 to 8 times the molar quantity of formaldehyde in the presence of a tertiary amine as catalyst; b) in a second (separation) stage, either the reaction mixture is separated into a distillation residue containing primarily the compounds of formula (II) and a destillation flow containing primarily the compounds of unreacted or partly reacted starting materials which is fed back to the first stage, or the reaction mixture of the first stage is separated into an aqueous and an organic phase by means of a phase separation device and the organic phase fed back to the first stage, and c) in a third (post-reaction distillation) stage, the distillation residue of the second stage or the aqueous phase obtained by phase separation during the second stage is subjected to a catalytic and/or heat treatment, the compound of formula (III) which has not been fully methylolized is transformed into the corresponding compound of formula (II) and into the corresponding methylene compound of formula (IV), in which R' represents hydrogen or has the meaning assigned above to R, the reaction mixture obtained in this way is distilled, and the distillation overhead product, which contains a compound of formula (IV) and unreacted formaldehyde, is fed back to the first stage. Thereafter, the still bottom of this distillation process, which essentially contains the compound of formula (II), is hydrogenated in the known manner so as to obtain the corresponding end product of formula (I).

公开(公告)号：MY120911A

公开(公告)日：2005-12-30

申请号：MYPI9604513

申请日：1996-10-30

Applicant: BASF AG

Inventor： STAMMER ACHIM DR ,  KRATZ DETLEF DR ,  BRUDERMULLER MARTIN DR ,  WITZEL TOM DR

IPC: C07C29/38 ,  C07C27/02 ,  C07C29/09 ,  C07C29/128 ,  C07C31/22 ,  C07C35/08 ,  C07C67/02 ,  C07C67/08 ,  C07C67/44 ,  C07C69/06

Abstract: A PROCESS FOR THE PREPARATION OF POLYALCOHOLS COMPRISES THE STAGES: (A) REACTION OF AN ALKANAL OR KETONE WITH FORMALDEHYDE IN AQUEOUS SOLUTION IN THE PRESENCE OF A TERTIARY AMINE TO GIVE A POLYALCOHOL PRODUCT MIXTURE CONTAINING FORMATES, (B) REMOVAL OF WATER, EXCESS TERTIARY AMINE, EXCESS FORMALDEHYDE, (C) HEATING OF REMAINING MIXTURE FROM (B) WITH REMOVAL OF FURTHER FORMAL-DEHYDE AND TERTIARY AMINE WITH FORMATION OF THE FORMATES OF THE POLY-ALCOHOL, (D) TRANSFER OF TERTIARY AMINE REMOVED FROM STAGE (B) AND/OR FROM STAGE (C), AND MEDIUM BOILERS, TO SYNTHESIS STAGE (A) AND/OR TO THE SUBSEQUENT TRANSESTERIFICATION STAGE (E), (E) TRANSESTERIFICATION OF THE RESULTING FORMATE OF THE POLYALCOHOL FROM STAGE (C) WITH AN ALCOHOL OF THE FORMULA ROH IN THE PRESENCE OF A TRANSESTE-RIFICATION CATALYST TO GIVE A POLYALCOHOL AND A FORMATE OF THE FORMULA WHERE R IS A HYDROCARBON RADICAL, PREFERABLY ALKYL OF 1-6, PARTICULARLY PREFERABLY 1-2, CARBON ATOMS, AND (F) ISOLATION OF THE POLYALCOHOLS.

公开(公告)号：MY128780A

公开(公告)日：2007-02-28

申请号：MYPI20005705

申请日：2000-12-05

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS DR ,  KRATZ DETLEF DR ,  STAMMER ACHIM DR ,  SCHULZ GERHARD DR

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

Abstract: FORMALDEHYDE IS REMOVED BY DISTILLATION FROM REACTION SOLUTIONS CONTAINING A METHYLOLATED ALKANAL WHICH WAS OBTAINED FROM THE REACTION OF FORMALDEHYDE WITH AN ALKANAL WHICH HAS AT LEAST ONE ACIDIC HYDROGEN ATOM α TO THE CARBONYL FUNCTION OR FROM THE REACTION OF A 2-ALKYLACROLEIN OR ACROLEIN WITH WATER AND FORMALDEHYDE, BY A PROCESS IN WHICH THIS REACTION WAS CARRIED OUT IN THE PRESENCE OF CATALYTIC AMOUNTS OF AN ORGANIC AMINE. THE PROCESS PERMITS THE IMPROVED REMOVAL OF FORMALDEHYDE FROM THE REACTION MIXTURE AND FURTHERMORE FACILITATES THE HYDROGENATION OF THE ALKANAS THUS OBTAINED TO GIVE POLYOLS.

公开(公告)号：DE19635703A1

公开(公告)日：1998-03-05

申请号：DE19635703

申请日：1996-09-03

Applicant: BASF AG

Inventor： RUEHL THOMAS DR ,  HENKELMANN JOCHEM DR ,  STAMMER ACHIM DR ,  STUTZ SUSANNE DR

IPC: B01J27/24 ,  C07C29/42 ,  C07C33/044 ,  C07C33/042 ,  C07C29/38

Abstract: The invention concerns a process for preparing alkyne diols or mixtures of alkyne diols with alkyne monools by reacting acetylene with more than equimolar amounts of ketones and/or aldehydes in the presence of an alkaline compound, the alkaline compound being used in a molar amount which is less than half the molar amount of the ketone and/or aldehyde to be reacted, in the presence of ammonia and/or at least one reactive primary amine.

公开(公告)号：DE19542036A1

公开(公告)日：1997-05-15

申请号：DE19542036

申请日：1995-11-10

Applicant: BASF AG

Inventor： KRATZ DETLEF DR ,  STAMMER ACHIM DR ,  WITZEL TOM DR ,  BRUDERMUELLER MARTIN DR

IPC: C07C27/02 ,  C07C29/09 ,  C07C29/128 ,  C07C29/38 ,  C07C31/22 ,  C07C35/08 ,  C07C67/02 ,  C07C67/08 ,  C07C67/44 ,  C07C69/06 ,  C07C31/18 ,  C07C29/74 ,  C07C69/04

Abstract: The invention relates to a process for the preparation of polyalcohols comprising the following stages: (a) reaction of an alcanal or ketone with formaldehyde in an aqueous solution in the presence of a tertiary amine; (b) separation of water, excess tertiary amine, excess formaldehyde; (c) heating of the remaining mixture of (b) separating further formaldehyde and tertiary amine and formation of polyalcohol formates; (d) conveying of tertiary amine separated from stage (b) and/ or stage (c) into the synthesis stage (a) and/or into the following transesterification stage (e); (e) transesterification of the polyalcohol formates obtained from stage (c) with an alcohol of the formula ROH in the presence of a transesterification catalyst to form polyalcohols and formates of the formula (I), R being a hydrocarbon radical, preferably an alkyl radical with 1-6, in particular preferably 1-2 C-atoms; (f) retrieval of polyalcohols.

公开(公告)号：MY138442A

公开(公告)日：2009-06-30

申请号：MYPI20053647

申请日：2005-08-04

Applicant: BASF AG

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

Abstract: THE PRESENT INVENTION RELATES TO A PROCESS FOR DISTILLATIVELY REMOVING PURE TRIOXANE FROM A FEEDSTREAM (I) COMPRISING TRIOXANE IN A PROPORTION OF AT LEAST 50% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE FEEDSTREAM (I), AND ADDITIONALLY FORMALDEHYDE AND WATER, WHICH COMPRISES FEEDING THE FEEDSTREAM I AND A FURTHER AQUEOUS STREAM (II) WHICH DOES NOT CONTAIN ANY COMPONENTS EXTRANEOUS TO THE FEEDSTREAM TO A DIVIDING WALL COLUMN (TWK1) HAVING A DIVIDING WALL TW WHICH IS ARRANGED SUBSTANTIALLY PERPENDICULARLY AND DIVIDES THE COLUMN INTERIOR INTO A FEED REGION (A1), A WITHDRAWAL REACTION (B1), AN UPPER COMBINED COLUMN REGION (C1) AND A LOWER COMBINED COLUMN REGION (D1), AND DRAWING OFF FROM THE FIRST DIVIDING WALL COLUMN (TWK1) A BOTTOM STREAM (III) COMPRISING PURE TRIOXANE AND A SIDESTREAM (IV) AT THE WITHDRAWAL REGION (B1), COMPRISING PURE WATER.FIG. 1

公开(公告)号：MY137873A

公开(公告)日：2009-03-31

申请号：MYPI20045310

申请日：2004-12-22

Applicant: BASF AG

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

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：ES2249217T3

公开(公告)日：2006-04-01

申请号：ES00116188

申请日：2000-08-02

Applicant: BASF AG

Inventor： KAIBEL GERD DR ,  STROEZEL MANFRED ,  STAMMER ACHIM DR

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

Abstract: Procedimiento para el intercambio de calor y/o de materia entre un líquido y un gas en una columna, en la que el líquido y el gas se conducen por un relleno estructurado que presenta al menos una capa (1) de relleno con un primer extremo (2) inferior y un segundo extremo (3) superior con una geometría interna que varía a través de su altura y las cantidades de líquido y de gas se ajustan de tal manera que en una primera zona (6) especialmente inferior de la capa (1) de relleno se configura de manera encauzada una capa de burbujas con una fase gaseosa principalmente dispersa, y al mismo tiempo en una segunda zona (7) especialmente superior de la capa (1) de relleno se configura de forma encauzada un flujo en película del líquido con una fase gaseosa principalmente continua.