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    31.
    发明专利
    未知

    公开(公告)号：DE3136212A1

    公开(公告)日：1983-03-31

    申请号：DE3136212

    申请日：1981-09-12

    Applicant: HOECHST AG

    Inventor： DIERY HELMUT DR ,  WESTER NORBERT DR ,  HILLE MARTIN DR

    IPC: B01D17/04 ,  C08G73/02 ,  C09K8/035 ,  C10G33/04 ,  C08G65/32 ,  C10M1/28 ,  B01D17/00 ,  C02F1/58 ,  C23F11/14

    Abstract: Thus, the invention relates to compounds of the formula I (I) where R is aromatic, preferably phenylene, R1 and R2 denote C1-C4-alkyl, preferably C1-C2-alkyl, R3 denotes methyl or ethyl, x and z together denote a number from 2 to 360, preferably from 2 to 140, y denotes a number from 15 to 70, preferably 25 to 60, n denotes a number from 1 to 10 and A- denotes an anion, preferably chloride or bromide, a process for their preparation and their use as demulsifiers for demulsifying crude oil emulsions and as corrosion inhibitors in equipment for lifting and processing natural gas and crude oil.

    37.
    发明专利
    未知

    公开(公告)号：DE2110602A1

    公开(公告)日：1972-09-28

    申请号：DE2110602

    申请日：1971-03-05

    Applicant: HOECHST AG

    Inventor： DIERY HELMUT DR ,  SEEGER KARL DR ,  SCHNEIDER GERHARD DR ,  BUECKING HANS-WALTER DR

    IPC: C11D1/88 ,  C07C103/18

    Abstract: 1384091 N-Substituted diamine-maleic acid semi-amide adducts HOECHST AG 3 March 1972 [5 March 1971] 9989/72 Heading C2C [Also in Division C5] Anti-microbially active compounds having surface-active properties are of formula in which R 1 is C 8-18 alkyl or alkenyl, x is 2 or 3, and R 2 and R 3 are (where Y is H or an alkali metal) or one of R 2 and R 3 may be hydrogen, or are in the form of the corresponding betaine, and are prepared by reacting one or more compounds with maleic acid semi-amide or a salt thereof in an aqueous or aqueous alcoholic medium. Use of the ammonium salt gives the compounds in betaine form. Alkali metal salt products can be converted to the betaine form by treatment with an acid to a suitable pH. The ammonium salt of maleic acid semiamide is prepared from maleic anhydride and gaseous NH 3 in chloroform.

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