Title:
SURFACE TREATMENT AGENT AND LIGHT-EMITTING DEVICE
Document Type and Number:
Japanese Patent JP2016125069
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a surface treatment agent for silver that has excellent discoloration (corrosion) prevention for silver, and can give excellent discoloration resistance (heat resistance and gas-blocking ability) to a silver surface.SOLUTION: A surface treatment agent for silver comprises a laminar silicic acid compound, where based on 1 mass% of the laminar silicic acid compound content, the free sodium ion amount is 2 ppm or less and the free lithium ion amount is 0.01 ppm or more and 10 ppm or less.SELECTED DRAWING: None
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Inventors:
TONAI TOMOKO
TAKANE NOBUAKI
YAMAURA ITARU
INADA MAKI
KOIBUCHI SHIGERU
TAKANE NOBUAKI
YAMAURA ITARU
INADA MAKI
KOIBUCHI SHIGERU
Application Number:
JP2014264401A
Publication Date:
July 11, 2016
Filing Date:
December 26, 2014
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD
International Classes:
C23F11/00; C09D1/00; C23C28/00; H01L33/48
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