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    Telegraph repeater
    7.
    发明授权
    Telegraph repeater 失效
    电报中继器

    公开(公告)号：US2947816A

    公开(公告)日：1960-08-02

    申请号：US60562256

    申请日：1956-08-22

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： HYSKO JOHN L

    IPC: C07F7/08 ,  C07F11/00 ,  C08G77/398 ,  C14C9/00 ,  D06M13/188 ,  D06M15/643 ,  H04L27/10

    CPC classification number: H04L27/10 ,  C07F7/0856 ,  C07F11/005 ,  C08G77/398 ,  C14C9/00 ,  D06M13/188 ,  D06M15/643

    Abstract: Organosilicon-chromium co-ordination complexes, which may be hydrolysed or ammoniated, are made by reacting (A) Cr(OH)Cl2 with an organosilicon compound containing units; or (B) CrO2Cl2 or CrCl3.6H2O with the organosilicon compounds in the presence of a reducing agent; or (C) CrO2Cl2 or CrCl3.6H2O with an organosilico compound containing the units whereby the chromium compound is reduced and the organosilicon compound is oxidized to form in situ the desired reactants set forth in (A), wherein each R is a monovalent hydrocarbon radical, R1 is an alkylene radical of at least 2 C atoms with the carboxyl group being at least 2 C atoms removed from the Si, and n is 0, 1, 2 or 3. The complexes preferably contain from 1 to 2 Cr atoms per Si-bonded alkylenecarboxylic group. The organosilicon reactant may be a monomer or polymer of the formula set forth at (A) or a co-polymer thereof with in which each R is an alkyl, cycloalkyl, alkenyl, aralkyl, aryl or alkaryl radical. The reaction is preferably conducted in an anhydrous inert solvent at a temperature from 50 DEG to 150 DEG C. The chlorine-containing complexes may be hydrolysed with water or aqueous alcohol, or they may be ammoniated by adding anhydrous ammonia to an anhydrous alcoholic solution of the complex. The complexes are soluble in water and certain alcohols, but are insoluble in benzene, toluene and perchloroethylene. In examples: (1, 2, 3, 5, 8, 9, 10, 12, 13) a CCl4 solution of CrO2Cl2 and a hydroxypropylmethylsiloxane-dimethyl-siloxane copolymer was refluxed for 5 hrs. with subsequent removal of solvent to yield a methanol-soluble greenish-black or brownish-black, glassy solid complex; (6) similar results were obtained by using a copolymer of HO.CH2.CH2.(CH3).SiO, C6H5.CH3.SiO and (C6H5)2SiO units as the starting polymer; (11, 14) a mixture of the copolymer of (1), glacial acetic acid and CrCl3.6H2O was heated to reflux while acetic anhydride was added thereto and refluxed further with subsequent distillation to give a greenish-black granular residue of the complex; (15) methylphenyl carboxypropyldisiloxane (COOH attached to 2nd C atom from Si) was refluxed with CCl4, ethanol and CrO2Cl2 to yield the desired complex. Uses-for rendering water-repellent paper, textile fibres and fabrics, tanned leather, metals, organic resin films, glass, glass fibres and ceramics; and for tanning leather. The carboxy substituted organosilicon reactants may be made by the processes described in Specifications 685,533, 769,496 and 788,842, and the alcoholic substituted reactants may be made by the processes described in Specifications 692,669, [Group IV (b)], and 810,283.

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