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    Halogenation of cyclopropyl-methyl ketone
    1.
    发明专利
    Halogenation of cyclopropyl-methyl ketone 未知

    公开(公告)号：DE19732292A1

    公开(公告)日：1999-01-28

    申请号：DE19732292

    申请日：1997-07-26

    Applicant: BASF AG

    Inventor： STAMM ARMIN DR ,  HENNINGSEN MICHAEL DR ,  FISCHER MARTIN DR ,  HENKELMANN JOCHEM DR

    IPC: C07C1/30 ,  C07C17/00 ,  C07C17/18 ,  C07F9/535 ,  C07C22/00 ,  C07C13/04

    Abstract: Halogenation of cyclopropyl-methyl ketone (CPMK) is effected with at least one dihalo-triorganophosphorane of formula (R)3P(X)2 (I) at 80-130 deg C, where (I) is prepared in situ from a triorgano-phosphane oxide or sulphide of formula R)3P=A (II) and a halogenating agent. The novelty is that (II) is used in a catalytic amount. R = optionally saturated 1-20C aliphatic hydrocarbyl; or phenyl or (1-4C)alkyl-phenyl (both optionally substituted by 1 or 2 of F, Cl and NO2); X = Cl, Br or I; A = O or S. Also claimed are: (i) the halogenated product obtained by the process; and (ii) the preparation of cyclopropyl-acetylene (CPA) by treating the halogenated product as in (i) with a strong base at -33 to +250 deg C.

    Halogenation of cyclopropyl methyl ketone
    2.
    发明专利
    Halogenation of cyclopropyl methyl ketone 未知

    公开(公告)号：DE19709401A1

    公开(公告)日：1998-09-10

    申请号：DE19709401

    申请日：1997-03-07

    Applicant: BASF AG

    Inventor： HENNINGSEN MICHAEL DR ,  STAMM ARMIN DR ,  FISCHER MARTIN DR ,  SIEGEL WOLFGANG DR

    IPC: C07C17/18 ,  C07C22/00 ,  C07C1/30 ,  C07C13/04 ,  C07F9/535

    Abstract: Process for halogenating cyclopropyl methyl ketone (I) comprises reacting (I) with a dihalophosphorane of formula R3PHal2 (II) at 80-200 deg C. R = 1-20C saturated or unsaturated aliphatic hydrocarbyl group or a phenyl or (1-4C alkyl)phenyl group optionally substituted by 1-2 of F, Cl and/or NO2; and Hal = Cl, Br or I. Also claimed are (i) a halogenation product obtained as above; and (ii) the production of cyclopropylacetylene (III) by treating the halogenation product with a strong base, especially KOH in a glycol ether, at -33 to 250 deg C.

    4.
    发明专利
    未知

    公开(公告)号：DE19705992A1

    公开(公告)日：1998-08-20

    申请号：DE19705992

    申请日：1997-02-17

    Applicant: BASF AG

    Inventor： UTECHT JENS DR ,  NIESSNER MANFRED DR ,  WEIGUNY SABINE DR ,  LORENCAK PRIMOZ DR ,  STAMM ARMIN DR

    IPC: C08G73/02 ,  C08F8/00 ,  D21H17/34 ,  D21H21/10 ,  D21H21/18 ,  D21H21/20 ,  C08F8/12 ,  C08F26/02

    Abstract: The invention relates to a method for producing polymers containing carbamate units, wherein polyethylene imines or polymers containing vinyl amine units of formula (III) in which R = H or C1-C6-alkyl are made to react with halogen formic acid esters. The invention also relates to the use of the polyethylene imines containing carbamate groups thus obtained or polymers containing vinyl carbamate units as retention agents, dehydrating agents, flocculants and fixing agents in the production of paper, as a protective colloid for the production of aqueous alkyl diketene dispersions and as a dispersing agent for the production of accumulated aqueous filling material slurries.

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