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    Alkenylamino-methylene-phosphonic acids and their copolymers prepn. - useful as complexing agents and as scale inhibitors in crude oil recovery
    11.
    发明专利
    Alkenylamino-methylene-phosphonic acids and their copolymers prepn. - useful as complexing agents and as scale inhibitors in crude oil recovery 未知

    公开(公告)号：DE4001420A1

    公开(公告)日：1991-07-25

    申请号：DE4001420

    申请日：1990-01-19

    Applicant: HOECHST AG

    Inventor： PORZ CHRISTOPH DR ,  REINHARDT GERD DR ,  HOFFMANN HERMANN DR

    IPC: C07F9/38 ,  C08F26/00 ,  C08F26/02 ,  C08F30/02 ,  C09K23/52 ,  C23F11/167 ,  E21B43/22

    Abstract: Alkenylaminomethylene phosphoric acids of formula (I) are claimed. R1 = H, 4-10C alkyl, phenyl, naphthyl, methylphenyl, hydroxyphenyl, methoxyphenyl, methylnapththyl, hydroxynaphthyl or methoxynaphthyl, esp. phenyl; R2 = H; R3, R4, R6 = H or methyl, R5 = H, 1-4C alkyl or phenyl, and M = H or Na(+), K(+) and NH4(+). Also claimed are: (i) prepn. of (I) by reacting a cpd. of formula (II) with an aldehyde of formula R1-CHO, and treating the prod. obtd. of formula (III) with an excess of phosphoric acid. (ii) copolymers comprising 0.1-99.9(1-50) wt.% of one or more monomers of formula (I), where r2 = H or CH2PO3M2, and 99.9-0.1 (99-50) wt.% of one or more monomers of formula R1@R2'C=CR3'X (IV) R1' = H or COOM; R2' = H, phenyl, or COOM; R3' = H, methyl, COOM or CH2COOM; X = COOM; R2' and R3' together = 4C alkyl; R1' and X together = cpd. of formula (V). F3' and X together = a cpd. of formula (VI) (iii) prepn. of the copolymers by polymerising (I) with (II), pref. in the presence of Na2SO4.

    12.
    发明专利
    未知

    公开(公告)号：DE3860374D1

    公开(公告)日：1990-09-06

    申请号：DE3860374

    申请日：1988-02-17

    Applicant: HOECHST AG

    Inventor： REINHARDT GERD DR ,  GRABLEY FRITZ-FEO DR

    IPC: C09K23/06 ,  C07C67/00 ,  C07C301/00 ,  C07C303/22 ,  C07C303/32 ,  C07C309/08 ,  C07C309/12 ,  C09K23/02 ,  C11D9/32

    Abstract: 1. A process for the preparation fo surface-active acyloxyalkanesulfonates of the formula see diagramm : EP0280165,P4,F1 in which R denotes C7 -C21 -alkyl or C7 -C21 -alkenyl, A denotes C2 -C4 -alkylene and M denotes an alkali metal or alkaline earth metal atom, which comprises reacting, in the presense of a carboxylic acid, carboxylic acid chlorides of the formula R-COCl in which R has the meaning indicated above with a hydroxyalkanesulfonate of the formula HO-A-SO3 M in which A is C2 -C4 -alkylene and is an alkali metal or alkaline earth metal.

    16.
    发明专利
    未知

    公开(公告)号：DE3706230A1

    公开(公告)日：1988-09-08

    申请号：DE3706230

    申请日：1987-02-26

    Applicant: HOECHST AG

    Inventor： REINHARDT GERD DR ,  GRABLEY FRITZ-FEO DR

    IPC: C09K23/06 ,  C07C67/00 ,  C07C301/00 ,  C07C303/22 ,  C07C303/32 ,  C07C309/08 ,  C07C309/12 ,  C09K23/02 ,  C11D9/32 ,  C07C143/06 ,  B01F17/02

    Abstract: 1. A process for the preparation fo surface-active acyloxyalkanesulfonates of the formula see diagramm : EP0280165,P4,F1 in which R denotes C7 -C21 -alkyl or C7 -C21 -alkenyl, A denotes C2 -C4 -alkylene and M denotes an alkali metal or alkaline earth metal atom, which comprises reacting, in the presense of a carboxylic acid, carboxylic acid chlorides of the formula R-COCl in which R has the meaning indicated above with a hydroxyalkanesulfonate of the formula HO-A-SO3 M in which A is C2 -C4 -alkylene and is an alkali metal or alkaline earth metal.

    19.
    发明专利
    未知

    公开(公告)号：DE59208558D1

    公开(公告)日：1997-07-10

    申请号：DE59208558

    申请日：1992-01-30

    Applicant: HOECHST AG

    Inventor： REINHARDT GERD DR ,  FRIDRICHS VERA ,  RUDOLF ULRIKE

    IPC: C11D1/72 ,  C11D1/825 ,  C11D3/39 ,  C11D3/395 ,  C11D17/08 ,  D06L3/00 ,  D06L3/02

    Abstract: Storage-stable aqueous suspensions of organic peracids containing 1 to 50 % by weight of a surfactant mixture consisting of 1 to 4 parts by weight of a C8-C22-fatty alcohol, oxyethylated with 1 to 5 units of ethylene oxide, and 4 to 1 parts by weight of a C8-C22-fatty alcohol, oxyethylated with 6 to 25 units of ethylene oxide, and optionally in addition other conventional components. It is possible owing to the use of two different surfactants to adjust very different viscosity levels in these suspensions, from low viscosity to pasty formulations.

    20.
    发明专利
    未知

    公开(公告)号：ES2069801T3

    公开(公告)日：1995-05-16

    申请号：ES91119185

    申请日：1991-11-11

    Applicant: HOECHST AG

    Inventor： MULLER WOLF-DIETER DR ,  JAEKEL FRANK DR ,  NAUMANN PETER DR ,  REINHARDT GERD DR

    IPC: B01J27/02 ,  A01N47/28 ,  A01N47/30 ,  A01N47/32 ,  B01J31/02 ,  B01J31/08 ,  C07B61/00 ,  C07C407/00 ,  C07C409/40 ,  C11D3/39

    Abstract: A process for the preparation of ureidoperoxycarboxylic acids of the formula A[NHCONHBCOOOH]x, in which x is the number 1 or 2, A, if x is 1, is hydrogen, C1-C20-alkyl, aryl, preferably phenyl, or haloaryl, preferably chlorophenyl, or if x is 2, is C1-C20-alkylene or arylene, preferably phenylene, B is a group of the formula in which n is a number from 1 to 20, m is the number 0, 1 or 2, R1 is C1-C20-alkyl and R2 is in each case hydrogen or C1-C20-alkyl, which comprises dissolving carbamoyllactams of the formula in which x, A and B have the abovementioned meanings, in a one- to six-fold, preferably a one- to three-fold, amount by weight of a strong catalyst acid, by then adding water in a one- to ten-fold molar excess, relative to the carbamoyllactam, to the solution of the carbamoyllactam in the catalyst acid and by heating the reaction mixture to form the ureidocarboxylic acid, by then adding to the reaction mixture an aqueous hydrogen peroxide solution in a one- to ten-fold, preferably a two- to four fold, molar excess per oxidizable carboxyl group of the ureidocarboxylic acid formed in the preceding reaction step, and by then precipitating the resulting ureidoperoxycarboxylic acid from the reaction mixture. These compounds are suitable as bleaches, oxidants and disinfectants.

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