Resin composition for aqueous ink

US12545795B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-12545795-B2
Application numberUS-202017785448-A
CountryUS
Kind codeB2
Filing dateDec 3, 2020
Priority dateDec 20, 2019
Publication dateFeb 10, 2026
Grant dateFeb 10, 2026

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  1. Title

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  2. Abstract

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  5. First independent claim

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Abstract

Official abstract text for this publication.

A resin composition for an aqueous ink includes a base resin, an aqueous dispersion medium, and an emulsifier. The base resin includes a rosin-modified alkyd resin. The emulsifier includes an anionic emulsifier and a nonionic emulsifier. The anionic emulsifier includes an oxyalkylene-containing anionic emulsifier. An HLB value of the nonionic emulsifier is 16.0 or more and 20.0 or less.

First claim

Opening claim text (preview).

The invention claimed is: 1 . A resin composition for an aqueous ink comprising: a base resin, an aqueous dispersion medium, and an emulsifier, wherein the base resin includes a rosin-modified alkyd resin, the emulsifier includes an anionic emulsifier and a nonionic emulsifier, the anionic emulsifier includes an oxyalkylene-containing anionic emulsifier, an HLB value of the nonionic emulsifier is 16.0 or more and 20.0 or less, the nonionic emulsifier includes an oxyalkylene-containing nonionic emulsifier, the oxyalkylene-containing nonionic emulsifier includes polyoxyalkylene alkyl ethers, and the number of units of oxyalkylene contained in one molecule of the oxyalkylene-containing nonionic emulsifier is 60 or more. 2 . The resin composition for an aqueous ink according to claim 1 , wherein the number of units of oxyalkylene contained in one molecule of the oxyalkylene-containing anionic emulsifier is 5 or more. 3 . The resin composition for an aqueous ink according to claim 1 , wherein the number of units of oxyalkylene contained in one molecule of the oxyalkylene-containing anionic emulsifier is 10 or more and 18 or less. 4 . The resin composition for an aqueous ink according to claim 1 , wherein the nonionic emulsifier contains a block copolymer of ethylene oxide and propylene oxide. 5 . The resin composition for an aqueous ink according to claim 1 , wherein the rosin-modified alkyd resin is a reaction product of a resin material containing rosins, a fatty acid and/or an oil and fat, a polybasic acid, and a polyhydric alcohol. 6 . The resin composition for an aqueous ink according to claim 5 , wherein the polybasic acid includes an aromatic dicarboxylic acid. 7 . The resin composition for an aqueous ink according to claim 6 , wherein a content ratio of the aromatic dicarboxylic acid with respect to the total amount of the resin material is 11% by mass or more and 23% by mass or less. 8 . The resin composition for an aqueous ink according to claim 1 , wherein the number of units of oxyalkylene contained in one molecule of the oxyalkylene-containing nonionic emulsifier is 80 or more.

Assignees

Inventors

Classifications

  • characterised by the pigment · CPC title

  • Hydrocarbon resins · CPC title

  • C09D11/105Primary

    Alkyd resins · CPC title

  • C09D11/102Primary

    containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds · CPC title

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What does patent US12545795B2 cover?
A resin composition for an aqueous ink includes a base resin, an aqueous dispersion medium, and an emulsifier. The base resin includes a rosin-modified alkyd resin. The emulsifier includes an anionic emulsifier and a nonionic emulsifier. The anionic emulsifier includes an oxyalkylene-containing anionic emulsifier. An HLB value of the nonionic emulsifier is 16.0 or more and 20.0 or less.
Who is the assignee on this patent?
Harima Chemicals Inc
What technology area does this patent fall under?
Primary CPC classification C09D11/105. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Feb 10 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).