中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

73 records (took 0.024 seconds)

    1.
    发明专利
    未知

    公开(公告)号：ES2082663T3

    公开(公告)日：1996-03-16

    申请号：ES94103957

    申请日：1994-03-15

    Applicant: BASF AG

    Inventor： BOTT KASPAR DR ,  BAUER GERHARD DR ,  HAEBERLE KARL DR

    IPC: C07C271/64 ,  C08F20/60 ,  C09D133/24 ,  C09J133/24 ,  C07C271/18

    Abstract: Copolymerisable oxime ethers of the general formula in which A is a divalent connecting link, R and R independently of one another are a C1- to C10-alkyl radical, a C1- to C10-alkoxy radical, a C5- to C10-cycloalkyl radical or a C5- to C10-aryl radical, which can also contain 1 - 3 non-adjacent nitrogen, oxygen or sulphur atoms as hetero atoms in the carbon chain or the carbon ring and can be substituted by one to three C1- to C4-alkyl or alkoxy groups, R or R can be a hydrogen atom or R and R together form a bridge of 3 to 14 carbon atoms, some of the carbon atoms also being able to be part of an aromatic ring, Z is an n-valent organic radical which contains a copolymerisable ethylenically unsaturated group, and n is an integer from 1 to 3.

    4.
    发明专利
    未知

    公开(公告)号：DE4037079A1

    公开(公告)日：1992-05-27

    申请号：DE4037079

    申请日：1990-11-22

    Applicant: BASF AG

    Inventor： BARWICH JUERGEN DR ,  REHMER GERD DR ,  BOTT KASPAR DR

    IPC: C07C231/06 ,  C07C235/20 ,  C07C235/78 ,  C07C235/84 ,  C08F20/60 ,  C08F220/60 ,  C08F246/00 ,  C09J7/02 ,  C09J133/24

    Abstract: Unsaturated phenone derivatives of the general formula I I where R1 is C1-C4-alkyl, cyclopropyl, cyclopentyl, cyclohexyl, indanonyl, tetralonyl, phenyl or phenyl in which some or all of the hydrogen atoms have been replaced by a C1-C4-alkyl, C1-C4-alkoxy or C1-C4-thioalkyl group, or together with R2 or R6 forms an ethylene or propylene bridge, R2 to R6 are each hydrogen, C1-C4-alkyl, C1-C4-alkoxy or C1-C4-thioalkyl, and R3, R4 and R5 may each additionally be hydroxyl, R2 or R6 may additionally together with R1 form an ethylene or propylene bridge and one or more, but not more than three, of the radicals R2 to R6 are a group of the general formula II II or III III where K is C1-C10-alkylene which may contain 1 or 2 oxygen or sulfur atoms, Y is straight-chain or branched C1-C10-alkylene or is C1-C10-alkylene which is substituted by carboxyl, a carboxylate anion, an alkyl C1-C4-carboxylate group or hydroxyl, X is -NH- or -(N-Alkyl)- of 1 to 4 carbon atoms and Z is hydrogen or C1-C4-alkyl.

    5.
    发明专利
    未知

    公开(公告)号：DE3865596D1

    公开(公告)日：1991-11-21

    申请号：DE3865596

    申请日：1988-08-16

    Applicant: BASF AG

    Inventor： BOTT KASPAR DR ,  HARTMANN HORST ,  GUTH JOSEF

    IPC: C07C67/08 ,  C07C69/54

    Abstract: In the prodn. of carboxylate esters (I) by reacting carboxylic acids (II) with low boiling alcohols (III), the novel features are that the reaction mixt. is passed to a first distn. column and (I), water and unreacted (III) are discharged at the top of this column and passed to a second distn. column, from which : a) (III) or an azeotropic mixt. of (III) and water or (III) and (I) is discharged at the top and recycled to the esterification reaction; b) a liquid side stream is discharged and sepd. into water and (I) in a phase sepn. vessel and (I) is recycled to the distn. column below the point at which the side stream is discharged; and c) (I) is discharged as bottom prod.. Pref. (II) are 3-7 C unsatd. carboxylic acids, 2-5 C halo-carboxylic acids (opt. contaminated with the corresp. unhalogenated acids) or 2-5 C mercapto-carboxylic acids.

    7.
    发明专利
    未知

    公开(公告)号：DE3830019A1

    公开(公告)日：1990-03-15

    申请号：DE3830019

    申请日：1988-09-03

    Applicant: BASF AG

    Inventor： BOTT KASPAR DR ,  HOFFMANN HERWIG DR ,  SCHEIDMEIR WALTER DR

    IPC: B01J23/04 ,  B01J31/02 ,  C07B61/00 ,  C07C29/34 ,  C07C29/44 ,  C07C33/20 ,  C07C33/34

    Abstract: Process for the preparation of 3-aryl-isobutanols of the general formula I … … in which… R and R are hydrogen or an alkyl or cycloalkyl radical with up to 8 C atoms, preferably an alkyl radical with 1 to 4 C atoms,… which is characterised in that arylcarbinols of the general formula II … … are reacted with n-propanol in the presence of catalytic amounts of an alkali metal hydroxide or alkali metal oxide at 250 to 350 DEG C in a closed reaction vessel. … The process is particularly important for preparing 3-aryl-isobutanols of the formula I in which R is an alkyl radical with 1 to 4 C atoms and R is hydrogen. The p-methyl-, p-isopropyl- and p-tert.-butylphenylisobutanols obtained in this way in very high selectivity are valuable precursors for the fragrances jasmorange, cyclamenaldehyde and Lysmeral (Lilial ) which are in high demand.

Patent Agency Ranking