Organomercaptomethyl silicon compounds and production thereof
    6.
    发明授权
    Organomercaptomethyl silicon compounds and production thereof 失效
    有机巯基甲基硅化合物及其制备

    公开(公告)号:US3350437A

    公开(公告)日:1967-10-31

    申请号:US32987563

    申请日:1963-12-11

    Applicant: BAYER AG

    Abstract: Organo-mercaptomethylsiloxanes are prepared by reacting a chloromethyl- or bromethyl siloxane comprising Cl- or units, any remaining units being , wherein n is 1-3, R is an inertly substituted or unsubstituted alkyl or aryl radical, and m is 1 or 2, with an alkylmercaptan, a mono- or poly-hydroxylated alkylmercaptan, a mercaptocarboxylic acid or a thiophenol in the presence of an alkanol having 1-4 carbon atoms, as solvent, and at least a stoichiometric amount of an alkali metal hydroxide or tertiary amine. Typical examples describe the preparation of (2) a polysiloxane of formula wherein a + b + c = 21, from the corresponding tris(bromomethyl)- siloxane and thiophenol; and (8) 1,3 - di - (b - hydroxy - ethyl - mercaptomethyl) - 1,1,3,3 - tetramethyl disiloxane. Many other examples are given.

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