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    Addition agent for the electrolyte used in the electrodeposition of lead
    1.
    发明授权
    Addition agent for the electrolyte used in the electrodeposition of lead 失效
    用于电极电极的电解质添加剂

    公开(公告)号：US3554884A

    公开(公告)日：1971-01-12

    申请号：US3554884D

    申请日：1968-08-01

    申请人： ITT RAYONIER INC

    发明人： QUIMBY GEORGE R

    IPC分类号： C25C1/18 ,  C25D3/36 ,  C22D1/24

    CPC分类号： C25C1/18 ,  C25D3/36

    摘要： THE UNIFORM ELECTROYLTIC DEPOSITIONOF LEAD FROM A CONVENTIONAL ELEXTROEFINING AQUEOUS ELECTROYLTICSOLUTION CONTAINING LEAD FLUOSILICATE AND HYDROFLUOSILICIC ACID IS PROMOTED BY ADDING TO THE ELECTROLYTIC SOLUTION FROM ABOUT 140-1200 MG./LITER OF A LIGNOSULFONATE AND FROM ABOUT 40-600 MG./LITER OF A WATER-SOLUBLE BLOCK COPOLYMER OF PROPYLENE OXIDE AND ETHYLENE OXIDE HAVING THE FOLLOWING GENERAL FORMULA:

    HO-(CH2-CH2-O)Y-(CH(-CH3)-CH2-O)X-(CH2-CH2-O)Z-H

    IN WHICH X IS AT LEAST 13, AND Y AND Z ARE SUCH THAT THE ETHENOXY CONTENT REPRESENTS FROM 20% TO 90% OF THE COPOLYMER.