Patent ID: 11864325
Assignee: TANAKA KIKINZOKU KOGYO K.K.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H  B  G | IPC B  C  H

Claim 0:
1. A method for forming a metal pattern on a pattern formation section set in a part or the whole of a region on a base material,
the base material comprising a fluorine-containing resin layer on a surface including at least the pattern formation section,
the method comprising: a step of forming a functional group on the pattern formation section on the surface of the fluorine-containing resin layer; and a step of applying a metal ink in which metal particles protected by an amine compound serving as a first protective agent and a fatty acid serving as a second protective agent are dispersed in a solvent to the surface of the base material to fix the metal particles on the pattern formation section,
wherein the fluorine-containing resin layer comprises a fluorine-containing resin having a surface free energy measured by the Owens-Wendt method of 13 mN/m or more and 20 mN/m or less, and
the metal ink comprises ethyl cellulose as an additive, wherein the only ethyl cellulose in the metal ink is a low-molecular weight ethyl cellulose having a number average molecular weight of 4,000 to 30,000.