N,n'-thio-bis-carbamic acid amides
    3.
    发明授权
    N,n'-thio-bis-carbamic acid amides 失效
    N,N'-二硫代氨基酸

    公开(公告)号:US3770826A

    公开(公告)日:1973-11-06

    申请号:US3770826D

    申请日:1971-12-10

    Applicant: BAYER AG

    CPC classification number: C08K5/43 C08L21/00

    Abstract: N,N''-THIO-BIS-CARBAMIC ACID AMIDES, THEIR PREPARATION BY REACTING AT LEAST 2 MOLS OF A CARBOXYLIC ACID AMIDE WITH 1 MOL OF SULPHUR DICHLORIDE IN THE PRESENCE OF AN ACID BINDING AGENT AND THEIR UTILITY AS RUBBER VULCANIZATION RETARDERS.

    5.
    发明专利
    未知

    公开(公告)号:DK204878A

    公开(公告)日:1978-11-12

    申请号:DK204878

    申请日:1978-05-10

    Applicant: BAYER AG

    Abstract: A process for the preparation of a substituted vinyl-cyclopropanecarboxylic acid ester of the formula in which R1 and R2 each independently is alkyl with 1-4 carbon atoms or halogen, R3 is halogen, phenoxy or phenoxy substituted by alkyl with 1-4 carbon atoms or by halogen, R4 is halogen or methyl, and n is 0, 1, 2, 3 or 4, comprising saponifying with alkali an ester of the formula in which R5 is alkyl with 1-4 carbon atoms, thereby to replace R5 by an alkaline salt group, and directly reacting such salt without intermediate purification with a benzyl chloride of the formula Advantageously the benzyl chloride is obtained by the gas-phase photochlorination of a compound of the formula (IV), the chlorination proceeding to about 25 to 75%, and the chlorination mass being employed directly without isolation.

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