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    1.
    发明专利
    未知

    公开(公告)号：ES2137607T3

    公开(公告)日：1999-12-16

    申请号：ES96115456

    申请日：1996-09-26

    Applicant: BASF AG

    Inventor： BAUR KARL GERHARD DR ,  ANNEN ULRICH DR ,  EXNER HERBERT DR ,  FRIED MICHAEL DR ,  RAUH ULRICH

    IPC: C07C67/08 ,  C07C67/327 ,  C07C69/54

    Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.

    PROCESS FOR PREPARING ALKYL ESTERS OF (METH)ACRYLIC ACID
    2.
    发明专利
    PROCESS FOR PREPARING ALKYL ESTERS OF (METH)ACRYLIC ACID 未知

    公开(公告)号：CZ273496A3

    公开(公告)日：1998-05-13

    申请号：CZ273496

    申请日：1996-09-18

    Applicant: BASF AG

    Inventor： BAUR KARL GERHARD DR ,  ANNEN ULRICH DR ,  EXNER HERBERT DR ,  FRIED MICHAEL DR ,  RAUH ULRICH

    IPC: C07C67/08 ,  C07C67/327 ,  C07C69/54

    Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.

    Copolymerization of ethylene with vinyl ester
    3.
    发明专利
    Copolymerization of ethylene with vinyl ester 未知

    公开(公告)号：DE19741097A1

    公开(公告)日：1999-03-25

    申请号：DE19741097

    申请日：1997-09-18

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  WEBER WILHELM DR ,  ANNEN ULRICH DR

    IPC: C08L23/08 ,  C08F2/00 ,  C08F2/02 ,  C08F210/02 ,  C08F218/04 ,  C08J3/22 ,  C09D17/00 ,  C08L29/00 ,  C08L31/00

    Abstract: Copolymerization of ethylene with vinyl esters involves initiating polymerization at least two positions in a pipe reactor with the temperature maxima being 150-220 deg C and less than \!10 deg C difference between the two. Copolymerization of ethylene with vinyl esters and optionally further vinyl comonomers comprises initiating polymerization by adding a catalyst/initiator at least two positions in a pipe reactor at 500-4000 bar and at most 220 deg C with the temperature maxima being 150-220 deg C and less than \!10 deg C difference between the two. Independent claims are included for the obtained copolymer and pigment concentrates containing the copolymer.

    4.
    发明专利
    未知

    公开(公告)号：DE19536183A1

    公开(公告)日：1997-04-03

    申请号：DE19536183

    申请日：1995-09-28

    Applicant: BASF AG

    Inventor： BAUR KARL GERHARD DR ,  ANNEN ULRICH DR ,  EXNER HERBERT DR ,  FRIED MICHAEL DR ,  RAUCH ULRICH

    IPC: C07C67/08 ,  C07C67/327 ,  C07C69/54 ,  C07C67/48 ,  C07C69/67 ,  C07C67/313

    Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.

    5.
    发明专利
    未知

    公开(公告)号：DE4431212A1

    公开(公告)日：1996-03-07

    申请号：DE4431212

    申请日：1994-09-02

    Applicant: BASF AG

    Inventor： ANNEN ULRICH DR ,  SEELMANN-EGGEBERT HANS-PETER D ,  WIDDER RUDI DR ,  MUELLER REINHARD DR

    IPC: C07D295/14 ,  C07C253/00 ,  C07C253/08 ,  C07C255/24 ,  C07D207/06 ,  C07D207/325 ,  C07D209/08 ,  C07D211/14 ,  C07D233/61 ,  C07D241/04 ,  C07D265/38 ,  C07D295/15 ,  C07D295/037 ,  C07D521/00

    Abstract: The production of quaternary glycine nitriles (I) in which R and R may be the same or different and are an aliphatic, cycloaliphatic or araliphatic radical with 1 to 30 C atoms, whereby R and R may also form a saturated or unsaturated five or six-member heterocyclic ring together with the N atom to which they are bonded, which can also contain further hetero-atoms, be benzanellated and have alkyl side groups, while R may also be hydrogen; R is C1 to C4 alkyl or benzyl; R is hydrogen, C1 to C20 alkyl which may be interrupted by one or more non adjacent oxygen atoms, or a radical (a) in which R is a chemical bond or a C1 to C6 alkylene bridge and X is a counterion; by the reaction of amines (II) in which the variables R and R have the above meanings, with a monoaldehyde (IIIa) R -CHO or a dialdehyde (IIIb) OHC-R -CHO in which R has the above meaning and R is hydrogen or C1 to C20 alkyl and hydrocyanic acid or an alkaline metal cyanide in an aqueous medium, followed by quaternation with an alkylation agent (IV) R -X in which R has the above meaning and X is an initial group, by reacting the amines (II) with the aldehydes (III) and hydrocyanic acid or alkaline metal cyanide and quaternising in succession without isolating an intermediate product in an aqueous medium.

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