Title:
OIL-BASED INK COMPOSITION AND WRITING INSTRUMENT
Document Type and Number:
Japanese Patent JP2021155471
Kind Code:
A
Abstract:
To provide a technique for improving the dispersibility of an oil-based ink composition and improving the dryability of it.SOLUTION: An oil-based ink composition has microfibrous cellulose, organic solvent, and colorant. The microfibrous cellulose has following characteristics: (A) it has a number average fiber diameter of 2 nm or more and 500 nm or less, (B) it has an average aspect ratio of 10 or more and 1000 or less, (C) it includes a cellulose I-type crystal structure, (D) it includes anionic functional groups, and (E) some or all of the anionic functional groups described in (D) have predetermined organic onium ions bound thereto.SELECTED DRAWING: None
Inventors:
NAMBA TATSUYA
GOI YOSUKE
GOI YOSUKE
Application Number:
JP2020053905A
Publication Date:
October 07, 2021
Filing Date:
March 25, 2020
Export Citation:
Assignee:
DAI ICHI KOGYO SEIYAKU CO LTD
International Classes:
C09D11/08; B43K5/00; B43K7/00; B43K8/00; C08B5/00; C09D11/16
Attorney, Agent or Firm:
Kazuhiro Nomura