EP0671447A2
Expired / Lapsed
EP
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Aqueous ink suitable for ink jet recording
Assignee: Kyocera Mita Industrial Co Ltd
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Filing: 1995-03-03
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Granted: —
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Expires: 2015-03-03
Abstract
Abstract Ink comprising an aqueous medium, a water-insoluble colorant and a dispersant for dispersing the colorant in the aqueous medium, the dispersant being a water-soluble polymer obtainable by polymerizing monomer comprising at least one monomer selected from acryloylmorpholine represented by the formula (1): and styrene sulfonates represented by the formula (2): wherein M is an alkaline metal atom or an amino group is provided. This ink is suitable for using for an ink-jet recording system because it provides a fast recorded image and is also superior in storage stability and jetting stability.
Inventors
- 👤 Seiji C/O Mita Industrial Co. Ltd. Kado
- 👤 Hiromi C/O Mita Industrial Co. Ltd. Kosaka
- 👤 Masayuki C/O Mita Industrial Co. Ltd. Ishii
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 12:43
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
Ink comprising an aqueous medium, a water-insoluble colorant and a dispersant for dispersing the colorant in the aqueous medium, the dispersant being a water-soluble polymer obtainable by polymerizing monomer comprising at least one monomer selected from acryloylmorpholine represented by the formula (1) : and styrene sulfonates represented by the formula (2) : herein M is an alkaline metal atom or an amino group.
Claim 2
Dependent Claim
83 words
Ink according to claim 1, wherein the water-soluble polymer is a copolymer obtainable by copolymerizing at least one monomer selected from acryloylmorpholine represented by the formula (1) and styrene sulfonates represented by the formula (2) with at least one further monomer selected from lower fatty acid vinyl esters represented by the formula (3) : wherein n is an integer of 0 to 15, and R¹ and R² are the same or different and indicate a hydrogen atom or a methyl group, and styrene.
Claim 3
Dependent Claim
30 words
Ink according to claim 2, wherein the amount of the further monomer is from 20 to 80%, preferably 35 to 65%, by weight based on the total amount of monomers.
Claim 4
Dependent Claim
18 words
Ink according to any preceding claim, wherein the polymerization degree of the water-soluble polymer is 99 or less.
Claim 5
Dependent Claim
30 words
Ink according to any preceding claim, wherein the amount of water-soluble polymer is from 0.1 to 10%, preferably 0.3 to 5%, by weight based on the total amount of ink.
Claim 6
Dependent Claim
17 words
Ink according to any preceding claim, wherein the water-insoluble colorant comprises a pigment and a water-insoluble dye.
Claim 7
Dependent Claim
30 words
Ink according to any preceding claim, wherein the amount of water-insoluble colorant is from 1 to 15%, preferably 3 to 10%, by weight based on the total amount of ink.
Claim 8
Dependent Claim
14 words
Use in an ink-jet recording system of an ink according to any preceding claim.
References Cited (Backward Citations)
No citation records indexed.
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