公开(公告)号：US06277181B1

公开(公告)日：2001-08-21

申请号：US09374291

申请日：1999-08-16

申请人： Richard Carroll Condra ,  Paul Christopher Healey

发明人： Richard Carroll Condra ,  Paul Christopher Healey

IPC分类号： C23C1830

CPC分类号： C23C18/1617

摘要： This invention is a method to extend the bath life of certain alkaline accelerators used in metal/tin colloid catalyst used in direct plating processes on printed circuit boards. The method is comprised of the following steps: measuring the pH of the alkaline activator bath, and restoring, the pH of the alkaline activator bath to a desired pH range between 12.2 and 12.6.

摘要翻译： 本发明是一种延长在印刷电路板上用于直接电镀工艺的金属/锡胶体催化剂中使用的某些碱性促进剂的浴寿命的方法。 该方法包括以下步骤：测量碱性活化剂浴的pH，并将碱性活化剂浴的pH恢复到12.2至12.6之间的所需p​​H范围。

公开(公告)号：US06277180B1

公开(公告)日：2001-08-21

申请号：US09350936

申请日：1999-07-12

申请人： Richard Carroll Condra ,  Paul Christopher Healey

发明人： Richard Carroll Condra ,  Paul Christopher Healey

IPC分类号： C23C1830

CPC分类号： C23C18/1617

摘要： A method to make volumetric additions of dilute aqueous acid solutions to a colloidal catalyst bath that will retard the salt crystallization. The process includes the steps of measuring the volumetric loss of water by physical measurements and adding dilute aqueous acid solution to the bath in the amount of the loss or by measuring the density or specific gravity of the solution and adding dilute aqueous acid solutions to maintain the specific gravity in the desired range.

摘要翻译： 将稀酸水溶液体积添加到胶体催化剂浴中以延缓盐结晶的方法。 该方法包括以下步骤：通过物理测量来测量水的体积损失，并将稀酸水溶液以损失量或通过测量溶液的密度或比重加入到浴中，并加入稀酸水溶液以维持 比重在所需范围内。