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1.发明授权
公开(公告)号：EP0607119B1
公开(公告)日：1998-01-28
申请号：EP90914695.3
申请日：1990-10-05
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2.发明公开
公开(公告)号：EP0607119A1
公开(公告)日：1994-07-27
申请号：EP90914695.0
申请日：1990-10-05
IPC分类号： C25D3
摘要： Dans un procédé pour le dépôt électrolytique acide de couches constituées entièrement ou en grande partie de plomb sur des surfaces, au moyen d'un électrolyte renfermant des sels de plomb et des acides, notamment de l'acide sulfonique d'alcane, de l'acide fluoborique ou de l'acide fluosilicique, des tensio-actifs non ioniques et des tensio-actifs cationiques ou ampholytiques sont ajoutés à l'électrolyte. Le procédé peut être mis en oeuvre à des densités de courant de 0,5 à 20 A/dm2 et à un pH inférieur à 1.
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3.发明公开
公开(公告)号：EP0888296A1
公开(公告)日：1999-01-07
申请号：EP97908265.0
申请日：1997-03-20
CPC分类号： C25D3/46 , C07C327/18
摘要： The invention concerns metallic salts of formula (I) which are difficult to dissolve in water, R1 and R2, which are identical or different, designating hydrogen or a lower alkyl group with between 1 and 3 carbon atoms, M being the cation of a metal which forms sulphides which are difficult to dissolve in water, and n meaning 1 or 2. The invention also concerns mixtures of these metallic salts. The metallic salts and their mixtures are produced by reacting carbon disulphide with ketones of formula (II), optionally with the addition of non-aqueous inert solvents and strong alkali, preferably potassium hydroxide, whereupon, by adding aqueous solutions of metallic salts of the metals M, the metallic salts of formula (I) which are difficult to dissolve in water are precipitated out. These salts are used as brighteners for electrolytic baths.
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4.发明授权
公开(公告)号：EP0888296B1
公开(公告)日：2000-12-20
申请号：EP97908265.8
申请日：1997-03-20
IPC分类号： C07C327/18 , C25D3/46
CPC分类号： C25D3/46 , C07C327/18
摘要： The invention concerns metallic salts of formula (I) which are difficult to dissolve in water, R1 and R2, which are identical or different, designating hydrogen or a lower alkyl group with between 1 and 3 carbon atoms, M being the cation of a metal which forms sulphides which are difficult to dissolve in water, and n meaning 1 or 2. The invention also concerns mixtures of these metallic salts. The metallic salts and their mixtures are produced by reacting carbon disulphide with ketones of formula (II), optionally with the addition of non-aqueous inert solvents and strong alkali, preferably potassium hydroxide, whereupon, by adding aqueous solutions of metallic salts of the metals M, the metallic salts of formula (I) which are difficult to dissolve in water are precipitated out. These salts are used as brighteners for electrolytic baths.
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