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1. 发明授权

US08486307B2 Silver micropowder having excellent affinity for polar medium, and silver ink 有权
标题翻译：对极性介质具有极好的亲和性的银微粉和银墨
公开(公告)号：US08486307B2
公开(公告)日：2013-07-16
申请号：US12811598
申请日：2008-12-25
申请人： Kimitaka Sato , Shinya Sasaki , Taro Nakanoya
发明人： Kimitaka Sato , Shinya Sasaki , Taro Nakanoya
IPC分类号： H01B1/22 , H01B1/02
CPC分类号： B22F9/24 , B22F1/0018 , B22F1/0022 , B22F1/0044 , B22F1/0062 , B22F2998/00 , B22F2999/00 , B82Y30/00 , C09D11/52 , H01B1/22 , Y10T428/2991 , B22F1/0059 , B22F2301/255 , B22F2304/054
摘要： Provided are silver nanoparticles having a good affinity (that is, dispersibility) for y-butyrolactone (C4H6O2), an organic solvent which has a relatively high boiling point though having a relatively small molecular weight, and has a low viscosity and a low surface tension and which has little irritating odor. The above problems are solved by providing a silver micropowder excellent in affinity for at least y-butyrolactone, which comprises silver particles processed to adsorb at least one of 1,4-dihydroxy-2-naphthoic acid (C11H8O4) and gallic acid (C7H6O5) on the surfaces thereof and having an X-ray crystal particle diameter DX of from 1 to 40 nm, preferably from 1 to 15 nm. The invention also provides a silver ink obtained by dispersing silver particles processed to adsorb an organic compound having a carboxyl group on the surfaces thereof and having an X-ray crystal particle diameter DX of from 1 to 40 nm, preferably from 1 to 15 nm (or having a mean particle diameter DTEM, as measured through TEM microscopy, of from 3 to 40 nm, preferably from 4 to 15 nm), in y-butyrolactone.
摘要翻译：提供了对于γ-丁内酯（C 4 H 6 O 2）具有良好的亲和性（即分散性）的银纳米颗粒，这种有机溶剂虽然具有相对较小的分子量，但具有较高的沸点，并且具有低粘度和低表面张力并且几乎没有刺激性气味。通过提供对至少γ-丁内酯的亲和性优异的银微粉来解决上述问题，所述银微粒包括被处理吸附1,4-二羟基-2-萘甲酸（C 11 H 8 O 4）和没食子酸（C 7 H 6 O 5）中的至少一种的银粒子，其表面上的X射线晶体粒径DX为1〜40nm，优选为1〜15nm。本发明还提供一种银粉，其通过将经加工的银颗粒分散在其表面上吸附具有羧基的有机化合物并且具有1至40nm，优选1至15nm的X射线晶体粒径DX（或具有3至40nm，优选4至15nm的平均粒径DTEM（通过TEM显微镜测量），在γ-丁内酯中。

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