Ink kit
US-12480016-B2 · Nov 25, 2025 · US
White ink composition
US2024228806A9 · US · A9
| Field | Value |
|---|---|
| Publication number | US-2024228806-A9 |
| Application number | US-202118547326-A |
| Country | US |
| Kind code | A9 |
| Filing date | Nov 16, 2021 |
| Priority date | Feb 25, 2021 |
| Publication date | Jul 11, 2024 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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An object is to obtain a white ink which is easy to redisperse and is re-dispersible by being shaken several tens of times with weak force at most, or alternatively, without being shaken. As a solution, a white ink composition is provided which contains 50.0% by mass or less of a titanium oxide pigment treated with silica, alumina, and contains an organic compound in a solid content of the white ink composition, and contains 5.0 parts by mass or more of an alkali-soluble resin whose weight-average molecular weight is 28,000 to 100,000 relative to 100 parts by mass of the titanium oxide pigment, and further contains a water-dispersible resin and water.
First claim
Opening claim text (preview).
1 . A white ink composition comprising: 50.0% by mass or less of a titanium oxide pigment treated with silica, alumina, and an organic compound in a solid content of the white ink composition; 5.0 parts by mass or more of an alkali-soluble resin whose weight-average molecular weight is 28,000 to 100,000 relative to 100 parts by mass of the titanium oxide pigment; and a water-dispersible resin and water. 2 . The white ink composition according to claim 1 , wherein the alkali-soluble resin whose weight-average molecular weight is 28,000 to 100,000 has a ratio, by mass of constituting monomers, of (styrene)/(alkyl ester of radical polymerizable unsaturated carboxylic acid with 8 or more carbon atoms)/((meth)acrylic acid) in a range of (35 to 55)/(25 to 35)/(15 to 35). 3 . The white ink composition according to claim 1 , wherein the alkali-soluble resin whose weight-average molecular weight is 28,000 to 100,000 has an acid value of 40 mgKOH/g or more. 4 . The white ink composition according to claim 1 , comprising 40.0 to 80.0% by mass of a water-dispersible resin in a solid content of the white ink composition. 5 . The white ink composition according to claim 1 , wherein the water-dispersible resin is an acrylic-based resin and/or a styrene acrylic-based resin whose acid value is 20 mgKOH/g or less. 6 . The white ink composition according to claim 1 , being intended for inkjet printing.
Assignees
Inventors
Classifications
from unsaturated acids or derivatives thereof · CPC title
Digital printing methods characterised by the inks used (inks per se C09D11/00) · CPC title
Ejecting white liquids · CPC title
containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title
characterised by the pigment dispersant · CPC title
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- What does patent US2024228806A9 cover?
- An object is to obtain a white ink which is easy to redisperse and is re-dispersible by being shaken several tens of times with weak force at most, or alternatively, without being shaken. As a solution, a white ink composition is provided which contains 50.0% by mass or less of a titanium oxide pigment treated with silica, alumina, and contains an organic compound in a solid content of the whit…
- Who is the assignee on this patent?
- Sakata Inx Corp
- What technology area does this patent fall under?
- Primary CPC classification C09D11/322. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jul 11 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A9). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).