公开(公告)号：US5803957A

公开(公告)日：1998-09-08

申请号：US782564

申请日：1997-01-10

Applicant: Tooru Murakami ,  Keizin Morimoto ,  Isamu Yanada ,  Masanobu Tsujimoto

Inventor： Tooru Murakami ,  Keizin Morimoto ,  Isamu Yanada ,  Masanobu Tsujimoto

IPC: C23C18/44 ,  B22F7/00

CPC classification number: C23C18/44

Abstract: To an electroless gold plating bath comprising a water-soluble gold compound, a complexing agent, and a reducing agent is added a small amount of polyvinyl pyrrodidone. The bath allows a satisfactory gold plating film to be formed on metal portions on a non-conductive substrate without plating spread.

Abstract translation: 向包含水溶性金化合物，络合剂和还原剂的无电镀金液中加入少量聚乙烯吡咯烷酮。 该浴可以在非导电性基板上的金属部分上形成满意的镀金膜，而不会电镀。

公开(公告)号：US5364460A

公开(公告)日：1994-11-15

申请号：US217717

申请日：1994-03-25

Applicant: Keizin Morimoto ,  Masanobu Tsujimoto ,  Tomomi Yaji ,  Tooru Murakami

Inventor： Keizin Morimoto ,  Masanobu Tsujimoto ,  Tomomi Yaji ,  Tooru Murakami

IPC: C23C18/44 ,  H05K3/24

CPC classification number: C23C18/44 ,  H05K3/244

Abstract: To a neutral electroless gold plating bath comprising a gold sulfite, a sulfite, and a reducing agent, there are added an organic phosphonic acid or a salt thereof and an optional stabilizer in the form of a non-ionic surfactant or non-ionic polymer. A gold plating film having an aesthetic lemon yellow color tone and susceptible to bonding deposits on an article from the bath without attacking the base material of the article and without plating spread.

Abstract translation: 向包含亚硫酸金，亚硫酸盐和还原剂的中性无电镀金浴中加入非离子表面活性剂或非离子聚合物形式的有机膦酸或其盐和任选的稳定剂。 具有美学柠檬黄色调的金镀膜，并且容易粘附沉积在来自浴的物品上，而不会侵害物品的基材并且没有电镀扩散。