Oil-based ink composition for writing utensils, writing utensil using same, and airbrush unit using same

Patent metadata

Field	Value
Publication number	US-2022017760-A1
Application number	US-201917294523-A
Country	US
Kind code	A1
Filing date	Nov 19, 2019
Priority date	Nov 20, 2018
Publication date	Jan 20, 2022
Grant date	—

Abstract

Provided are an oil-based ink composition for writing utensils, a writing utensil using the same, and an airbrush unit using the same. The oil-based ink composition for writing utensils has good writing properties on writing surfaces of various materials and improved scratch resistance to scratches repeated or to scratches with stronger force on a marking after writing. The subject oil-based ink composition for writing utensils contains at least an aluminum pigment, a colorant, a resin, an organic solvent, and a polydimethylsiloxane, the polydimethylsiloxane having polyether-modifying groups at both ends, and a total number of hydroxyl groups on the polyether-modifying groups being 3 or greater.

First claim

1 . An oil-based ink composition for writing utensils, comprising at least an aluminum pigment, a colorant, a resin, an organic solvent, and a polydimethylsiloxane, the polydimethylsiloxane having polyether-modifying groups at both ends, and a total number of the hydroxyl groups on the polyether-modifying groups being 3 or greater.

2 . The oil-based ink composition for writing utensils according to claim 1 , wherein at least one of the polyether-modifying groups has a hyperbranched molecular skeleton.

3 . The oil-based ink composition for writing utensils according to claim 1 , wherein a content of the polydimethylsiloxane is 0.005 to 10 mass % based on a total mass of the oil-based ink composition for writing utensils.

4 . The oil-based ink composition for writing utensils according to claim 1 , wherein the aluminum pigment is a leafing type aluminum pigment.

5 . A writing utensil comprising at least an ink storage portion, a writing portion, and a holding portion,
wherein the oil-based ink composition for writing utensils described in claim 1 is stored in the ink storage portion.

6 . An airbrush unit comprising an airbrush and the writing utensil described in claim 5 , wherein an oil-based ink composition is sprayed by way of air ejected from the airbrush.

7 . The oil-based ink composition for writing utensils according to claim 2 , wherein a content of the polydimethylsiloxane is 0.005 to 10 mass % based on a total mass of the oil-based ink composition for writing utensils.

8 . The oil-based ink composition for writing utensils according to claim 2 , wherein the aluminum pigment is a leafing type aluminum pigment.

9 . The oil-based ink composition for writing utensils according to claim 3 , wherein the aluminum pigment is a leafing type aluminum pigment.

10 . A writing utensil comprising at least an ink storage portion, a writing portion, and a holding portion,
wherein the oil-based ink composition for writing utensils described in claim 2 is stored in the ink storage portion.

11 . A writing utensil comprising at least an ink storage portion, a writing portion, and a holding portion,
wherein the oil-based ink composition for writing utensils described in claim 3 is stored in the ink storage portion.

12 . A writing utensil comprising at least an ink storage portion, a writing portion, and a holding portion,
wherein the oil-based ink composition for writing utensils described in claim 4 is stored in the ink storage portion.

13 . An airbrush unit comprising an airbrush and the writing utensil described in claim 10 , wherein an oil-based ink composition is sprayed by way of air ejected from the airbrush.

14 . An airbrush unit comprising an airbrush and the writing utensil described in claim 11 , wherein an oil-based ink composition is sprayed by way of air ejected from the airbrush.

15 . An airbrush unit comprising an airbrush and the writing utensil described in claim 12 , wherein an oil-based ink composition is sprayed by way of air ejected from the airbrush.

Assignees

• Mitsubishi Pencil Co

Inventors

• Ikai Takayuki
• Haruhara Yumiko

Classifications

• B43K8/006

  using a spraying system, e.g. airbrushes · CPC title

• C09D11/17 Primary

  characterised by colouring agents · CPC title

• B43K7/00

  Ball-point pens ({B43M11/085 takes precedence}; multiple-point writing implements B43K27/00) · CPC title

• B05D7/02

  to macromolecular substances, e.g. rubber (treatment or coating of shaped articles made of macromolecular substances C08J7/00) · CPC title

• C09D11/18 Primary

  specially adapted for ball-point writing instruments · CPC title