公开(公告)号：DE3002601A1

公开(公告)日：1981-07-30

申请号：DE3002601

申请日：1980-01-25

Applicant: BASF AG

Inventor： MUELLER HERBERT DIPL CHEM DR ,  SCHOENLEBEN WILLIBALD DIPL CHE

IPC: C07C87/36 ,  C07C85/08

Abstract: Prodn. of 4-amino-1-cyclohexyl aminobutane (I) by hydrogenative catalytic alkylation of butane-1,4-diamine (II) with cyclohexanone (III) is carried out with a stoichiometric excess of (III) in the presence of an inorganic base (IV) below 100 (below 80) deg.C. Almost complete conversion of the costly (II) to (I) is possible. The catalyst is Raney Ni. The starting materials are as anhydrous as possible. The cyclohexanol formed in the reaction is converted to (III) and recycled .

公开(公告)号：DE2424373A1

公开(公告)日：1975-12-11

申请号：DE2424373

申请日：1974-05-20

Applicant: BASF AG

Inventor： DECKER MARTIN DIPL CHEM DR ,  SCHOENLEBEN WILLIBALD DIPL CHE ,  TOUSSAINT HERBERT DIPL CHEM DR ,  HOFFMANN HERWIG DIPL CHEM DR

IPC: C07C251/30 ,  C07C67/00 ,  C07C241/00 ,  C07D239/42 ,  C07C119/08

Abstract: Compounds of the general formula + CH3 R1O- HC- CH- CH= N ANGLE Cl ,¦¦ CH3 Cl R2 which may be used in place of malondialdehyde in synthesis reactions are obtained in a one-step reaction form dimethylformamide, phosgene and an alkyl vinyl ether.

公开(公告)号：DE2415663A1

公开(公告)日：1975-10-23

申请号：DE2415663

申请日：1974-04-01

Applicant: BASF AG

Inventor： WEITZ HANS-MARTIN DIPL CHEM DR ,  WINDERL SIEGFRIED DIPL CHEM DR ,  SCHOENLEBEN WILLIBALD DIPL CHE ,  HARTIG JUERGEN DIPL CHEM DR

IPC: C07D307/08

Abstract: Tetrahydrofurane is prepd. from a cpd. contg. butanediol-1:4 as structural element by subjecting 1 mol. butanediol-1:4-diacetate to the action of an acid catalyst in the presence of >=1 mol water. Tetrahydrofurane is an important solvent and inter. in this process, it is easily recovered as an azeotrope with water (94.3%/5.7%).

公开(公告)号：DE3215909A1

公开(公告)日：1983-11-03

申请号：DE3215909

申请日：1982-04-29

Applicant: BASF AG

Inventor： NISSEN DIETMAR DIPL CHEM DR ,  SCHOENLEBEN WILLIBALD DIPL CHE ,  MARX MATTHIAS DIPL CHEM DR ,  ILLERS KARL HEINZ DIPL PHYS DR ,  SIMAK PETR DIPL CHEM DR

IPC: B29C67/24 ,  C08G18/32 ,  C08G18/50 ,  C08G18/65 ,  C08G18/66 ,  C08G18/00 ,  C08G18/14

Abstract: 1. A process for the preparation of molded parts based on polyurea elastomers by reacting a) organic polyisocyanates, b) polyether polyamines, and c) alkyl-substituted aromatic diamines, wherein the polyether polyamines (b) used are polyoxyalkylene polyamines having a molecular weight of from 1 100 to 16 000 and the general structural formulae H2 N-(R**2 O)x -R**1 -NH2 H2 N-R**1 -(OR**2 )x -NH-(R**2 O)y -R**1 -NH2 see diagramm : EP0093334,P12,F1 and/or see diagramm : EP0093334,P12,F2 where R**1 and R**2 are identical or different optionally substituted alkylene radicals of 2 to 10 carbon atoms, the alkylene radicals R**2 of the alkoxy groups also being identical or different, T is a radical or a trifunctional initiator molecule for the alkylene oxide polymerization, which radical does not contain any reactive hydrogen atoms, and x, x', z, z', y and y' are identical or different integers greater than 0, and the alkyl-substituted aromatic diamines (c) used are meta-phenylene diamines of the formulae see diagramm : EP0093334,P12,F3 and/or see diagramm : EP0093334,P12,F4 where R**3 is a branched alkyl of up to 10 carbon atoms, in which the branching point is at the C1 -carbon atom, and R**4 and R**5 are identical or different alkyls of 1 to 3 carbon atoms, and/or diaminodiphenyl-methanes of the formula see diagramm : EP0093334,P13,F1 where R**6 , R**7 , R**8 and R**9 are identical or different and each denote methyl, ethyl, propyl, isopropyl, sec-butyl and tert-butyl, but at least one of the radicals is isopropyl or sec-butyl.

公开(公告)号：DE2727330A1

公开(公告)日：1979-01-04

申请号：DE2727330

申请日：1977-06-16

Applicant: BASF AG

Inventor： SCHOENLEBEN WILLIBALD DIPL CHE ,  HOFFMANN HERWIG DIPL CHEM DR ,  LENGSFELD WOLFGANG DIPL CHEM D ,  MUELLER HERBERT DIPL CHEM DR

IPC: C07C45/66 ,  C07C45/72 ,  C07C45/74 ,  C07C47/20

Abstract: Prepn. of 2-methyl-2-penten-1-al (I) is carried out by converting propionaldehyde (II) to 2-methyl-3-hydroxypentan-1-al and then to (I) in the presence of an aq. non-volatile alkali. The improvement comprises continuing the reaction until substantially all the (II) has disappeared, and then immediately dehydrating the resulting 2-phase reaction mixt. (I) is useful as an intermediate for pharmaceuticals, plasticisers, fibre raw materials and auxiliaries. The process gives 97-99% yields without intermediate sepn. of the organic phase (c.f. US 3432557). It is esp. suitable for continuous operation.