公开(公告)号：DE59604922D1

公开(公告)日：2000-05-11

申请号：DE59604922

申请日：1996-11-11

Applicant: BASF AG

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

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

Abstract: PCT No. PCT/EP96/04922 Sec. 371 Date Oct. 5, 1998 Sec. 102(e) Date Oct. 5, 1998 PCT Filed Nov. 11, 1996 PCT Pub. No. WO97/17313 PCT Pub. Date May 15, 1997A 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 form a formates containing polyalcohol product mixture, (b) removal of water, excess tertiary amine, excess formaldehyde (c) heating of remaining mixture from (b) with removal of further formaldehyde and tertiary amine with formation of the formates of the polyalcohol, (d) transfer of tertiary amine removed from stage (b) and/or from stage (c), to synthesis stage (a) and/or to the subsequent transesterification stage (e), (e) transesterification of the resulting formates of the polyalcohol from stage (c) with an alcohol of the formula ROH in the presence of a transesterification catalyst to give polyalcohols and formates 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：DE19817794A1

公开(公告)日：1999-10-28

申请号：DE19817794

申请日：1998-04-21

Applicant: BASF AG

Inventor： FISCHER MARTIN ,  STAMMER ACHIM ,  QUAISER STEFAN

IPC: C01B15/01 ,  C01B15/013 ,  C01B15/029 ,  H01L21/306

Abstract: High purity aqueous hydrogen peroxide solutions, used for electronic substrate treatment and having an extremely low total organic carbon content, are new. High purity aqueous hydrogen peroxide solutions, used for treating substrates of electronic components, have a total organic carbon content of \}100 ppb. Independent claims are also included for the following: (i) production of high purity aqueous hydrogen peroxide solutions by one of the following methods performed in water and in the absence of organic compounds and their source materials: catalytic reaction of hydrogen and oxygen, electrochemical reduction of oxygen or electrolysis of acidic ammonium sulfate solutions; and (ii) high purity aqueous hydrogen peroxide solutions produced by the above process.

公开(公告)号：CA2328952A1

公开(公告)日：1999-10-28

申请号：CA2328952

申请日：1999-04-19

Applicant: BASF AG

Inventor： FISCHER MARTIN ,  STAMMER ACHIM ,  QUAISER STEFAN

IPC: C01B15/01 ,  C01B15/013 ,  C01B15/029 ,  H01L21/306

Abstract: The invention relates to highly pure aqueous hydrogen peroxide solutions for the electronics industry and to a method for producing such solutions which are essentially free from organic compounds. The invention is characterized in that, in each case in water, hydrogen and oxygen are catalytically reacted, oxygen is electrochemically reduced or acid ammonium sulfate solutions are electrolyzed. The reactions are carried out in the absence of organic compounds and materials releasing such compounds.

公开(公告)号：CA2395396C

公开(公告)日：2009-02-03

申请号：CA2395396

申请日：2000-12-28

Applicant: BASF AG

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

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

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

公开(公告)号：MX2008001005A

公开(公告)日：2008-03-25

申请号：MX2008001005

申请日：2006-08-04

Applicant: BASF AG

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

IPC: C07D323/06

Abstract: La invencion se relaciona con un proceso integrado para prepara trioxano de formaldehido en el que una corriente A1 que comprende agua y formaldehido y una corriente B2 de reciclado que consiste substancialmente de agua y formaldehido se alimentan a un reactor de sintesis de trioxano en el que el formaldehido se convierte en trioxano para obtener una corriente A2 de producto que comprende trioxano, agua y formaldehido; la corriente A2 se alimenta a una primera columna de destilacion y se destila a una presion en la escala de 0.1 a 2.5 bar para obtener una corriente B1 enriquecida en trioxano, y la corriente B2 que consiste substancialmente de agua y formaldehido; la corriente B1 y la corriente D1 de reciclado que comprende trioxano, agua y formaldehido se alimentan a una segunda columna de destilacion y se destilan a una presion en la escala de 0.2 a 17.5 bar para obtener una corriente C2 de producto que consiste substancialmente detrioxano, y una corriente C1 que comprende trioxano, agua y formaldehido; la corriente C1 se alimenta a una tercera columna de destilacion y se destila a una presion en la escala de 0.1 a 2.5 bar para obtener la corriente D1 de reciclado que comprende trioxano, agua y formaldehido, y una corriente D2 que consiste substancialmente de agua y formaldehido. (Figura 1).

公开(公告)号：MX2008001002A

公开(公告)日：2008-03-25

申请号：MX2008001002

申请日：2006-08-01

Applicant: BASF AG

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

IPC: C07D323/06

Abstract: La invencion se relaciona con un proceso integrado para preparar trioxano a partir de formaldehido en el que, en un primer paso, una corriente A1 que comprende agua y formaldehido y una corriente B2 de reciclado que consiste substancialmente de agua y formaldehido se alimentan a un reactor de sintesis de trioxano en el que el formaldehido se convierte en trioxano para obtener una corriente A2 de producto que comprende trioxano, agua y formaldehido. La corriente A2 y la corriente D1 de reciclado que comprende trioxano, agua y formaldehido se alimentan a una primera columna de destilacion y se destilan a una presion en la escala de 0.1 a 2.5 bar para obtener una corriente B1 enriquecida en trioxano, y la corriente B2 que consiste substancialmente de agua y formaldehido. La corriente B1 se alimenta a una segunda columna de destilacion y se destila a una presion en la escala de 0.2 a 17.-5 bar para obtener una corriente C2 de producto que consiste substancialmente de trioxano, y una corriente C1 que comprende trioxano, agua y formaldehido. La corriente C1 se alimenta a una tercer acolumna de destilacion y se destila a una presion en la escala de 1 a 10 bar para obtener la corriente D1 de reciclado que comprende trioxano, agua y formaldehido, y una corriente D2 que consiste substancialmente de agua.

公开(公告)号：DE502005001905D1

公开(公告)日：2007-12-20

申请号：DE502005001905

申请日：2005-05-17

Applicant: BASF AG

Inventor： SCHWITTAY CLAUDIUS ,  STOECKELMANN ELMAR ,  HEINEMANN JOHANNES ,  ZOELLNER KNUT ,  STAMMER ACHIM

IPC: C08G2/10 ,  C08G2/08 ,  C08J11/02 ,  C08L59/00

Abstract: A process for removing residual monomers from polyoxymethylene homo- or copolymers, comprising the following process steps: a) the residual monomers are removed in gaseous form as vapors from the polymer in a devolatilization apparatus, b) the residual monomer vapors are removed through a vapor pipe, c) the residual monomers are condensed from the vapors in a condensation apparatus at from 1.09 to 102.4 bar and from 102 to 230° C., the temperature not falling below 102° C. at any point of the condensation apparatus, and those surfaces of the condensation apparatus which come into contact with the vapors being coated with a liquid film of condensed residual monomers.

公开(公告)号：DE102005051974A1

公开(公告)日：2007-05-03

申请号：DE102005051974

申请日：2005-10-31

Applicant: BASF AG

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

IPC: C07D323/06 ,  C07D317/12

Abstract: Preparation of trioxane and at least a comonomer for the preparation of (co)polymer on trioxane basis, comprises (a) converting formaldehyde and at least a co-monomer educt to trioxane and co-monomer in an aqueous solution to obtain a reaction mixture; (b) distilling the reaction mixture in a first distillation step at a first pressure to obtain stream (B1) and a stream (B2); and (c) distilling the stream (B1) in a second distillation step to obtain stream (C1) containing trioxane, co-monomer and water, and a product stream (C2) containing co-monomer and trioxane. Preparation of trioxane and at least a co-monomer for the preparation of (co)polymer on trioxane basis, comprises: (a) converting formaldehyde and at least a co-monomer educt to trioxane and co-monomer in an aqueous solution to obtain a reaction mixture containing trioxane, co-monomer, formaldehyde, water and optionally co-monomer educt, by synthesis step; (b) distilling the reaction mixture in a first distillation step at a first pressure to obtain stream (B1) enriched with trioxane and comonomer, and a stream (B2) containing water, formaldehyde and optionally comonomer-educt; and (c) distilling the stream (B1) in a second distillation step at a pressure above the pressure of the first distillation step to obtain stream (C1) containing trioxane, co-monomer and water, and a product stream (C2) containing co-monomer and trioxane.

公开(公告)号：BRPI0417859A

公开(公告)日：2007-04-27

申请号：BRPI0417859

申请日：2004-12-21

Applicant: BASF AG

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

IPC: B01D3/36 ,  B01D3/14 ,  C07D323/06

Abstract: A process for removing trioxane from a mixture I of formaldehyde, trioxane and water, by a) distilling the mixture I in a first distillation stage at a pressure of from 0.1 to 2 bar to obtain a stream II which comprises formaldehyde and a stream III which comprises predominantly trioxane and additionally water and formaldehyde, b) mixing the stream III with a recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde to obtain a stream IIIa which comprises predominantly trioxane and additionally water and formaldehyde, c) distilling the stream IIIa, if appropriate after removing low boilers from the stream III or IIIa in a further distillation stage, in a second distillation stage at a pressure of from 0.2 to 10 bar, the pressure in the second distillation stage being at least 0.1 bar higher than the pressure in the first distillation stage, to obtain a stream IV of trioxane and a stream V which comprises predominantly trioxane and additionally water and formaldehyde, d) distilling the stream V in a third distillation stage at a pressure of from 0.1 to 4 bar to obtain a stream VI which comprises predominantly water and additionally formaldehyde, and the recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde, e) if appropriate, distilling the stream VI in a fourth distillation stage to obtain a stream VIII which comprises predominantly water, and a stream IX which comprises predominantly formaldehyde.

公开(公告)号：AT356107T

公开(公告)日：2007-03-15

申请号：AT00991643

申请日：2000-12-27

Applicant: BASF AG

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

IPC: C07B61/00 ,  C07C29/14 ,  C07C31/22 ,  C07C45/75 ,  C07C45/82 ,  C07C45/83 ,  C07C45/86 ,  C07C47/058 ,  C07C47/19 ,  C07C45/80

Abstract: Formaldehyde is removed by distillation from reaction solutions containing a methlolated alkanal which was obtained from the reaction of formaldehyde with an alkanal which has at least one acidic hydrogen atom alpha 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 organic amine. The process permits the improved removal of formaldehyde from the reaction mixture and furthermore facilitates the hydrogenation of the alkanals thus obtained to give polyols.