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    Process for the manufacture of dialkyl-phosphinic acid esters
    3.
    发明授权
    Process for the manufacture of dialkyl-phosphinic acid esters 失效
    制备二烷基次膦酸酯的方法

    公开(公告)号：US3914345A

    公开(公告)日：1975-10-21

    申请号：US42725373

    申请日：1973-12-21

    Applicant: HOECHST AG

    Inventor： KLEINER HANS-JERG ,  LANDAUER FRANZ

    IPC: C07F9/32

    CPC classification number: C07F9/3211

    Abstract: Dialkyl-phosphinic acid alkyl esters are obtained by reacting Alpha -monoolefins being substantially free of sulfur compounds with dialkyl-phosphites in the presence of free-radical generators. The known products are foam depressants, flame retardant agents and intermediates for plant protecting agents.

    Abstract translation: 二烷基次膦酸烷基酯通过在自由基发生剂存在下使基本上不含硫化合物的α-单烯烃与亚磷酸二烷基酯反应而获得。 已知的产品是用于植物保护剂的泡沫抑制剂，阻燃剂和中间体。

    Bisammonium compounds and process for preparing them
    4.
    发明授权
    Bisammonium compounds and process for preparing them 失效
    BISAMMONIUM化合物及其制备方法

    公开(公告)号：US3661966A

    公开(公告)日：1972-05-09

    申请号：US3661966D

    申请日：1969-08-04

    Applicant: HOECHST AG

    Inventor： BARTMANN WILHELM ,  DUWEL DIETER ,  GEORGI VOLKMAR ,  WOLF ERHARD ,  BEERMANN CLAUS ,  LANDAUER FRANZ

    IPC: A61K31/14 ,  C07C233/00 ,  C07C125/06

    CPC classification number: A61K31/14 ,  C07C233/00

    Abstract: BIS-AMMONIUM COMPOUNDS OF THE FORMULA

    R1-OC-N(-CH2-N(+)(-R2)(-R4)-R3))2 2X(-)

    WHEREIN R1 IS ALKYL HAVING 1 TO 6 C-ATOMS, ALKOXY HAVING 1 TO 25 CARBON ATOMS, ALKENYOXY HAVING 3 TO 18 C-ATOMS, CYCLOALKOXY HAVING 4 TO 8 C-ATOMS, CYCLOALKYLALKOXY OR ALCKYLCYCLOALKOXY EACH HAVING 5 TO 8 C-ATOMS, AND HALOGENO-ALKOXY OR ALKOXYALKOXY EACH HAVING 1 TO 6 C-ATOMS, R2 IS ALKYL HAVING 1 TO 3 C-ATOMS, R3 IS ALKYL HAVING 1 TO 25 C-ATOMS, ALKENYL HAVING 3 TO 18 C-ATOMS, CYCLOALKYL HAVING 4 TO 8 C-ATOMS OR PHENALKYL HAVING 1 TO 2 C-ATOMS IN THE ALKYLENE RADICAL AND OPTIONALLY ONE CHLORINE ATOM OR A NITRO GROUP IN THE PHENYL NUCLEUS, R4 IS ALKYL HAVING 6 TO 25 C-ATOMS OR ALKENYL HAVING 5 TO 25 C-ATOMS, AND X- IS AN ANION OF A NON-TOXIC ACID AND A PROCESS FOR PREPARING THEM ARE DESCRIBED. THE COMPOUNDS HAVE VALUABLE ENTHELMINTIC PROPERTIES.

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