Metal powder, ultraviolet ray curable ink jet composition and recorded object

Patent metadata

Field	Value
Publication number	US-2017210907-A1
Application number	US-201715482964-A
Country	US
Kind code	A1
Filing date	Apr 10, 2017
Priority date	May 17, 2011
Publication date	Jul 27, 2017
Grant date	—

Abstract

The invention provides metal powder constituted from metal particles. Each of the metal particles comprises a base particle having a surface and a metal material constituting at least the surface of the base particle. The base particle is subjected to a surface treatment with a fluorine type phosphoric acid ester. Further, the invention also provides an ultraviolet ray curable ink jet composition to be ejected by using an ink jet method. The ultraviolet ray curable ink jet composition comprises a polymerizable compound and metal powder constituted from metal particles. The metal particles of the metal powder are subjected to a surface treatment with a fluorine type phosphoric acid ester.

First claim

What is claimed is:

1 . A method of producing metal powder constituted from metal particles each including a base particle with a surface, the method comprising:
mixing a liquid including the base particle of which surface is constituted of a metal material and a fluorine-containing surface treatment agent to obtain a mixture; and performing a surface treatment to the base particle by applying an ultrasonic vibration to the mixture.

2 . The method as claimed in claim 1 , wherein at least the surface of the base particle is formed from Al as a major component thereof.

3 . The method as claimed in claim 1 , wherein the metal particles of the metal powder are of a scaly shape.

4 . The method as claimed in claim 1 , wherein the fluorine-containing surface treatment agent has a chemical structure represented by the following formula (1):
POR N (OH) 3-n   (1)
where in the above formula (1), “R” is CF 3 (CF 2 ) m —, CF 3 (CF 2 ) m (CH 2 ) l —, CF 3 (CF 2 ) m (CH 2 O) l —, CF 3 (CF 2 ) m (CH 2 CH 2 O) l —, CF 3 (CF 2 ) m O— or CF 3 (CF 2 ) m (CH 2 ) l O—, “n” is an integral number of 1 to 3, “m” is an integral number of 5 to 17, and “l” is an integral number of 1 to 12.

5 . The method as claimed in claim 1 , wherein the fluorine-containing surface treatment agent is CF 3 (CF 2 ) 5 (CH 2 ) 2 O(P)(OH) 2 and/or CF 3 (CF 2 ) 5 (CH 2 ) 2 O(P)(OH)(OCH 2 CH 3 ).

6 . The method as claimed in claim 1 , wherein the fluorine-containing surface treatment agent has a perfluoro alkyl structure.

7 . The method as claimed in claim 1 , wherein an average particle size of the metal particles of the metal powder is in a range of 500 nm to 3.0 μm.

8 . The method as claimed in claim 3 , wherein an average thickness of the metal particles of the metal powder is in a range of 10 nm to 20 nm.

Assignees

• Seiko Epson Corp

Inventors

• Toyoda Naoyuki
• Shibatani Masaya
• Moriyama Hidekazu
• Yamada Minoru
• Kagose Taketoshi
• Kobayashi Toshiyuki
• Ogawa Tomohiro
• Terada Masaru
• Kuribayashi Homare
• Hirata Koki

Classifications

• B22F1/102

  Metallic powder coated with organic material · CPC title

• B22F1/052 Primary

  characterised by a mixture of particles of different sizes or by the particle size distribution · CPC title

• B22F1/0014

  Operations & Transport · mapped topic

• C09C1/644

  treated with organic compounds, e.g. polymers · CPC title

• B22F2303/01

  Main component · CPC title