Title:
AQUEOUS INK COMPOSITION FOR WRITING INSTRUMENTS
Document Type and Number:
WIPO Patent Application WO/2020/196517
Kind Code:
A1
Abstract:
Provided is an aqueous ink composition that is for writing instruments and that uses colored resin particles having excellent color developability and is suitable for writing instruments such as felt-tip pens, marking pens, and ballpoint pens. The aqueous ink composition for writing instruments according to the present invention is characterized by containing colored resin particles colored by a salification dye, which is a salification product of an acidic dye and a basic dye.
Inventors:
HAGA HISATO (JP)
Application Number:
PCT/JP2020/013006
Publication Date:
October 01, 2020
Filing Date:
March 24, 2020
Export Citation:
Assignee:
MITSUBISHI PENCIL CO (JP)
International Classes:
C09B69/02; B43K7/00; B43K8/02; C09B67/46; C09D11/17
Domestic Patent References:
| WO2018042818A1 | 2018-03-08 | |||
| WO2017204259A1 | 2017-11-30 |
Foreign References:
| JP2018119061A | 2018-08-02 | |||
| JP2018035204A | 2018-03-08 | |||
| JP2017002121A | 2017-01-05 |
Other References:
See also references of EP 3950852A4
Attorney, Agent or Firm:
FUJIMOTO Eisuke et al. (JP)
Download PDF: