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    • 8. 发明授权
    • Cyanide-free aqueous alkaline bath used for the galvanic application of zinc or zinc-alloy coatings
    • 用于电镀锌或锌合金涂层的无氰化钠碱性浴
    • US06652728B1
    • 2003-11-25
    • US09786242
    • 2001-06-25
    • Birgit SonntagUdo GrieserBarrie Sydney James
    • Birgit SonntagUdo GrieserBarrie Sydney James
    • C25D322
    • C25D3/22C25D3/565
    • An aqueous alkaline cyanide-free bath for the galvanic deposition of zinc or zinc alloy coatings on substrate surfaces is described, which contains in addition to a source of zinc ions and optionally a source of further metal ions, also hydroxide ions and a polymer of the general formula A that is soluble in the bath as well as optionally conventional additives. The bath may furthermore contain a quaternary derivative of a pyridine-3-carboxylic acid of the formula B and/or a quaternary derivative of a pyridine-3-carboxylic acid of the formula C A process for the galvanic deposition of zinc coatings and zinc alloy coatings using the aforedescribed bath is also described. By using the baths according to the invention it is possible to produce coatings that exhibit a uniform layer thickness combined with a high gloss, and which do not exhibit any tendency to exfoliate.
    • 描述了用于在基底表面上电镀锌或锌合金涂层的碱性无氰水溶液,其还包含锌离子源和任选的其它金属离子源,还包含氢氧根离子和 可溶于浴的通式A以及任选的常规添加剂。 该浴还可以含有式B的吡啶-3-羧酸的季衍生物和/或式CA方法的吡啶-3-羧酸的季衍生物,用于电镀锌涂层和锌合金涂层 还描述了使用上述浴。通过使用根据本发明的浴,可以生产出具有与高光泽度结合的均匀层厚度并且不表现出任何脱落倾向的涂层。
    • 10. 发明授权
    • Solution and process to pretreat copper surfaces
    • 预处理铜表面的方法和工艺
    • US06562149B1
    • 2003-05-13
    • US09601494
    • 2000-08-22
    • Udo GrieserHeinrich Meyer
    • Udo GrieserHeinrich Meyer
    • C23C2248
    • C23F1/18C23C22/52C23C22/83H05K3/383H05K3/389H05K3/4611H05K2203/0796H05K2203/124
    • The invention concerns processes and solutions for the preliminary treatment of copper surfaces which are subsequently to be firmly bonded to organic substrates. The solution is used, in particular, for firmly bonding laminated multilayered printed circuit boards and for firmly bonding resists to the copper surfaces of printed circuit boards. The solutions contain (a) hydrogen peroxide; (b) at least one acid; (c) at least one nitrogen-containing, five-membered heterocyclic compound which does not contain any sulphur, selenium or tellurium atom in the heterocycle; and (d) at least one adhesive compound from the group consisting of sulfinic acids, seleninic acids, tellurinic acids, heterocyclic compounds containing at least one sulphur, selenium and/or tellurium atom in the heterocycle, and sulfonium, selenonium and telluronium salts having the general formula (A), in which A stands for S, Se or Te; R1, R2 and R3 stand for alkyl, substituted alkyl, alkenyl, phenyl, substituted phenyl, benzyl, cycloalkyl, substituted cycloalkyl, R1, R2 and R3 being the same or different; and X− stands for an anion of an inorganic or organic acid or hydroxide, provided that the acid selected to constitute component (b) is not identical to the sulfinic, seleninic or tellurinic acids selected as component (d).
    • 本发明涉及用于铜表面的初步处理的方法和解决方案,其随后将牢固地结合到有机基底上。 特别地,该溶液用于牢固地粘结层叠的多层印刷电路板,并将抗蚀剂牢固地粘合到印刷电路板的铜表面。 溶液含有(a)过氧化氢; (b)至少一种酸; (c)至少一种在杂环中不含硫,硒或碲原子的含氮五元杂环化合物; 和(d)至少一种由亚磺酸,硒酸,碲酸,杂环中含有至少一个硫,硒和/或碲原子的杂环化合物组成的组,以及锍,硒和碲鎓盐,其具有 通式(A),其中A代表S,Se或Te; R1,R2和R3代表烷基,取代的烷基,烯基,苯基,取代的苯基,苄基,环烷基,取代的环烷基,R1,R2和R3相同或不同; 并且X代表无机或有机酸或氢氧化物的阴离子,条件是选自构成组分(b)的酸与选自组分(d)的亚磺酸,硒化或碲酸反应不同。