公开(公告)号：CA2610936A1

公开(公告)日：2006-12-21

申请号：CA2610936

申请日：2006-06-12

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  SCHELLING HEINER ,  HASSE HANS ,  BLAGOV SERGEJ

IPC: C07C41/50 ,  C07C43/30

Abstract: The invention relates to a method for production of polyoxymethylene dialkyl ethers of formula H2m+1CmO(CH2O)nCmH2m+1, where n = 2 - 10, m independently = 1 or 2, in which a dialkyl ether selected from dimethyl ether, methyl ethyl ether or diethyl ether and trioxan are fed into a reactor and reacted in the presence of an acid catalyst, whereby the amount of water introduced into the reaction mixture with the dialkyl ether, trioxan and/or the catalyst is

公开(公告)号：PT1270544E

公开(公告)日：2005-05-31

申请号：PT02022029

申请日：1999-01-26

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  SCHWARZ HANS VOLKMAR ,  SCHARR VOLKER ,  PENZEL ULRICH ,  JACOBS JAN D ,  SEYFERT WILFRIED DR ,  SCHWEERS OLAF DR

IPC: C07B61/00 ,  C07C209/78 ,  C07C211/45 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14

Abstract: The production of methylene-di-phenylamine from aniline (A) and formaldehyde (F) with an acid catalyst (C) comprises placing (A) and possibly (C) in a reactor, feeding (F) and possibly (C) through a mixer into a circulation loop containing (A), possibly (C) and possibly (F), and heating to above 75 degrees C after adding at least 50% of the total (F). Independent claims are also included for: (a) mixtures containing methylene-di-phenylamine (MDA) obtained by this process; (b) a process for the production of polyisocyanates by phosgenation of these mixtures; (c) a process for the production of methylene-diphenylisocyanate (MDI) by phosgenation of MDA (obtained as above) at 50-150 degrees C and 0.5-10 bar, optionally in presence of inert solvent; (d) a process for the production of MDI comprising: (1) the semi-continuous process described above using a mol ratio of (A):(C) = (1:0.6)-(1:0.01) and a mol ratio of (A):(total F) = (1.7:1)-(7.2:1), in which the temperature of the circulating mixture is 20-75 degrees C and the mixture is heated for at least 0.2 hour at above 75 degrees C after adding at least 50% of the (F), (2) neutralization, (3) distillation of water and aniline, (4) phosgenation of the purified MDA as in (c) above, (5) removal of phosgene, hydrogen chloride and possibly solvent at below 150 degrees C under vacuum or inert gas, (6) removal of solvent at not above 1900 degrees C and (7) isolation of 2,2'-, 2,4'- and/or 4,4'-MDI and/or mixtures of at least two of these isomers by distillation at 2-50 mbar and 150-250 degrees C and/or by crystallization; and (e) polyisocyanates obtained by these processes.

公开(公告)号：MY118793A

公开(公告)日：2005-01-31

申请号：MYPI9802744

申请日：1998-06-18

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  SCHELLING HEINER ,  WATZENBERGER OTTO ,  PFAB PETER

IPC: B01D3/00 ,  C01B21/14

Abstract: A VERY PURE AQUEOUS SOLUTION OF FREE HYDROXYLAMINE IS PREPARED BY A PROCESS IN WHICH THE DILUTE, AQUEOUS HYDROXYLAMINE SOLUTION IS CONCENTRATED IN A COLUMN BY REMOVING HYDROXYLAMINE-CONTAINING VAPORS VIA A SIDE TAKE-OFF IN THE BOTTOM OF THE COLUMN, AND VERY PURE HYDROXYLAMINE IS OBTAINED BY CONDENSING THE VAPORS. THE NOVEL PROCESS CAN BE CARRIED OUT SIMPLY, IN A GENTLE MANNER AND ON A LARGE SCALE AND GIVES ELECTRONIC GRADE HYDROXYLAMINE.

公开(公告)号：PT934922E

公开(公告)日：2004-08-31

申请号：PT98124266

申请日：1998-12-18

Applicant: BASF AG

Inventor： HASSE HANS ,  STROFER ECKHARD ,  PENZEL ULRICH ,  CAESAR FRIEDRICH ,  SCHORR VOLKER ,  GMEREK KARL-HEINT

IPC: C07C209/78 ,  C07C211/50

公开(公告)号：AU2003293840A1

公开(公告)日：2004-06-30

申请号：AU2003293840

申请日：2003-12-11

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  FIENE MARTIN ,  OLBERT GERHARD ,  WALSDORFF CHRISTIAN ,  HARTH KLAUS

IPC: B01J8/00 ,  B01J8/06 ,  C01B7/04

Abstract: Preparation of chlorine involves passing hydrogen chloride and gas stream comprising molecular oxygen in a reactor (1) having parallel catalyst tubes (2) charged with fixed-bed catalyst and at least one deflector plate (6) perpendicular to the reactor. The plates leave passages on opposite sides of the reactor free next to its interior wall. A liquid heat transfer medium circulates between tubes.

公开(公告)号：AU2003277868A1

公开(公告)日：2004-04-23

申请号：AU2003277868

申请日：2003-09-18

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  SCHOLL STEPHAN ,  SOHN MARTIN ,  WOLFERT ANDREAS ,  PALLASCH HANS-JURGEN ,  BREDEHOFT JAN PETER

IPC: B01D1/06 ,  C07C263/10 ,  C07C263/20 ,  C07C265/14 ,  B01D3/00

Abstract: Isocyanates are prepared by reacting primary amines with phosgene in a reactor by a process in which a reaction discharge is present in the form of a suspension which contains the isocyanate to be prepared, as a liquid, and carbamyl chlorides as a solid, and the suspension is worked up in a film evaporator, and this process is carried out in a production plant.

公开(公告)号：AU2003267407A1

公开(公告)日：2004-04-23

申请号：AU2003267407

申请日：2003-09-25

Applicant: BASF AG

Inventor： HARTH KLAUS ,  KUHRS CHRISTIAN ,  WALSDORFF CHRISTIAN ,  FIENE MARTIN ,  STROFER ECKHARD

IPC: B01J23/52 ,  B01J23/66 ,  C01B7/04

Abstract: The invention relates to a catalyst for the catalytic oxidation of hydrogen chloride, comprising on a support a) from 0.001 to 30% by weight of gold, b) from 0 to 3% by weight of one or more alkaline earth metals, c) from 0 to 3% by weight of one or more alkali metals, d) from 0 to 10% by weight of one or more rare earth metals, e) from 0 to 10% by weight of one or more further metals selected from the group consisting of ruthenium, palladium, platinum, osmium, iridium, silver, copper and rhenium, in each case based on the total weight of the catalyst.

公开(公告)号：AU2003232760A1

公开(公告)日：2003-12-02

申请号：AU2003232760

申请日：2003-05-13

Applicant: BASF AG

Inventor： FRIESE KATRIN ,  RAULS MATTHIAS ,  FREYHOF REINHARD ,  FRIESE THORSTEN ,  ARMBRUSTER HARALD ,  ZEINER HARTMUT ,  EGBERS GITTA ,  STROFER ECKHARD ,  HECK LUDWIG ,  HILDENBRAND PETER

IPC: C07D323/06

Abstract: Production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: distillation of the crude trioxane; crystallization of the trioxane and; separation from the mother liquor followed by melting and distillation of other byproducts. A process for the production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: (a) distillation of the crude trioxane; (b) crystallization of the trioxane and; (c) separation from the mother liquor followed by; (d) melting and; (e) distillation of other byproducts.

公开(公告)号：PT1053222E

公开(公告)日：2003-09-30

申请号：PT99906202

申请日：1999-01-26

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  JACOBS JAN ,  SEYFERT WILFRIED ,  SCHWARZ HANS VOLKMAR ,  SCHWEERS OLAF ,  SCHARR VOLKER ,  PENZEL ULRICH

IPC: C07B61/00 ,  C07C209/78 ,  C07C211/45 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14

Abstract: The production of methylene-di-phenylamine from aniline (A) and formaldehyde (F) with an acid catalyst (C) comprises placing (A) and possibly (C) in a reactor, feeding (F) and possibly (C) through a mixer into a circulation loop containing (A), possibly (C) and possibly (F), and heating to above 75 degrees C after adding at least 50% of the total (F). Independent claims are also included for: (a) mixtures containing methylene-di-phenylamine (MDA) obtained by this process; (b) a process for the production of polyisocyanates by phosgenation of these mixtures; (c) a process for the production of methylene-diphenylisocyanate (MDI) by phosgenation of MDA (obtained as above) at 50-150 degrees C and 0.5-10 bar, optionally in presence of inert solvent; (d) a process for the production of MDI comprising: (1) the semi-continuous process described above using a mol ratio of (A):(C) = (1:0.6)-(1:0.01) and a mol ratio of (A):(total F) = (1.7:1)-(7.2:1), in which the temperature of the circulating mixture is 20-75 degrees C and the mixture is heated for at least 0.2 hour at above 75 degrees C after adding at least 50% of the (F), (2) neutralization, (3) distillation of water and aniline, (4) phosgenation of the purified MDA as in (c) above, (5) removal of phosgene, hydrogen chloride and possibly solvent at below 150 degrees C under vacuum or inert gas, (6) removal of solvent at not above 1900 degrees C and (7) isolation of 2,2'-, 2,4'- and/or 4,4'-MDI and/or mixtures of at least two of these isomers by distillation at 2-50 mbar and 150-250 degrees C and/or by crystallization; and (e) polyisocyanates obtained by these processes.

公开(公告)号：AU2006259100B2

公开(公告)日：2011-04-07

申请号：AU2006259100

申请日：2006-06-12

Applicant: BASF AG

Inventor： BLAGOV SERGEJ ,  HASSE HANS ,  STROFER ECKHARD

IPC: C08G2/08 ,  C07C41/56

Abstract: Processes for preparing tri- and tetraoxymethylene glycol dimethyl ether (POMDMEn=3,4) include feeding a reaction mixture of an aqueous formaldehyde solution and methanol into a reactive evaporator and separating into a first low boiler fraction and a first high boiler fraction, recycling the first high boiler fraction into the reactor, feeding the first low boiler fraction into a first distillation column and separating into a second low boiler fraction and a second high boiler fraction, recycling the second high boiler fraction into the reactive evaporator, feeding the second low boiler fraction into a second distillation column and separating into a third low boiler fraction and a third high boiler fraction, feeding the third high boiler fraction into a phase separation apparatus and separating into an aqueous phase and an organic phase, and feeding the organic phase into a third distillation column and separating into a low and high boiler fractions.