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    • 3. 发明授权
    • Reducing tin sludge in acid tin plating
    • 在酸性锡镀层中减少锡污泥
    • US5378347A
    • 1995-01-03
    • US65104
    • 1993-05-19
    • Donald ThomsonDavid A. LukeClaudia Mosher
    • Donald ThomsonDavid A. LukeClaudia Mosher
    • C25D3/32C25D3/30C25D3/60C25D21/18
    • C25D3/30
    • The present invention relates to a solution for use in the electroplating of tin and tin alloys comprising a basis solution which includes fluoboric acid or an organic sulfonic acid or one of their salts, divalent tin ions, and an antioxidant compound which includes a transition metal selected from the elements of Group IV B, V B or VI B of the Periodic Table in an amount effective to assist in maintaining the tin ions in the divalent state. Another aspect of the invention relates to a method for preventing, reducing or minimizing the oxidation of tin ions in an acid electroplating solution by adding one of these antioxidant compounds thereto. This method is effective in certain basis solutions even when iron contamination or high oxygen levels are present.
    • 本发明涉及一种用于锡和锡合金电镀的溶液,其包括基础溶液,其包含氟硼酸或有机磺酸或它们的一种盐,二价锡离子和包含所选择的过渡金属的抗氧化剂化合物 从元素周期表第ⅣB族,Ⅴ族或ⅥB族元素中以有助于维持二价态的锡离子的量。 本发明的另一方面涉及一种通过向其中加入这些抗氧化剂化合物之一来防止,减少或最小化酸性电镀溶液中锡离子氧化的方法。 即使存在铁污染或高氧含量,该方法在某些基础溶液中也是有效的。
    • 4. 发明授权
    • Foam insulation and process for producing the same
    • 泡沫保温及其制造方法
    • US4731389A
    • 1988-03-15
    • US798145
    • 1985-11-14
    • R. Keene ChristopherDonald Thomson
    • R. Keene ChristopherDonald Thomson
    • B29B7/74C04B28/00C04B28/10C04B28/26C04B28/30E04B1/76E04F21/08C08J9/30B29C39/10C08J9/32E04B2/34
    • B29B7/7438C04B28/02C04B28/26E04B1/7604E04F21/085C04B2111/28Y02W30/92Y10S264/06
    • The invention relates to foams for insulating cavities and structures, such as spaces between walls in houses. The inventive foam compositions are prepared in separate portions, generally comprising (A) cement and (B) foam. Air is added initially to foam one of the components or a mixture of components.In a first embodiment, the first component comprises an aqueous solution of polyvinyl alcohol and a dispersant. This component is mechanically foamed by injection of air, for example. After the mechanical foaming a second, cement component is added to the first component. This second component comprises an aqueous solution, mixture or suspension of magnesium oxide and barium metaborate, and a dispersant.In a second, preferred embodiment, the first component comprises an aqueous solution of polyvinyl alcohol and calcium chloride, which component is mechanically foamed by injection of air. After the foaming a second component is added, comprising an aqueous solution of Portland Cement, a dispersant and sodium metaborate.
    • 本发明涉及用于绝缘空腔和结构的泡沫,例如房屋中墙壁之间的空间。 本发明的泡沫组合物分别制备,通常包含(A)水泥和(B)泡沫。 最初添加空气来泡沫组分之一或组分的混合物。 在第一实施方案中,第一组分包含聚乙烯醇的水溶液和分散剂。 例如,该组分通过注入空气机械发泡。 在第二次机械发泡之后,将水泥组分加入到第一组分中。 该第二组分包括氧化镁和偏硼酸钡的水溶液,混合物或悬浮液以及分散剂。 在第二个优选实施方案中,第一组分包含聚乙烯醇和氯化钙的水溶液,该组分通过注入空气机械发泡。 在发泡后,加入第二组分,其包含波特兰水泥水溶液,分散剂和偏硼酸钠。