EP0796901A2
Expired / Lapsed
EP
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Ink jet recording liquid
Assignee: Artience Co Ltd
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Filing: 1997-03-14
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Granted: —
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Expires: 2017-03-14
Abstract
Abstract The present invention relates to an aqueous ink jet recording liquid of a pigment type, which liquid has excellent stability and printing characteristics; and also to a process for the preparation of said liquid. The ink jet recording liquid of the present invention is obtained by dispersing a pigment and a resin in an aqueous medium. Said resin is an aqueous dispersion-type resin comprising a shell composed of a polymer having a glass transition point in the range of 50° C to 150° C and a core composed of a polymer having a glass transition point in the range of -100° C to 40° C.
Inventors
- 👤 Sunao Toyo Ink Manufacturing Co. Ltd. Satake
- 👤 Seiji Toyo Ink Manufacturing Co. Ltd. Sawada
- 👤 Yasuharu Toyo Ink Manufacturing Co. Ltd. Iida
- 👤 Tsutomuo Toyo Ink Manufacturing Co Ltd Fujigamori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 09:50
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/324; C09D11/326; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
66 words
An ink jet recording liquid obtained by dispersing a pigment and a resin in an aqueous medium, said resin being an aqueous dispersion-type resin comprising a shell composed of a polymer having a glass transition point in the range of 50° C to 150° C and a core composed of a polymer having a glass transition point in the range of -100° C to 40° C.
Claim 2
Dependent Claim
48 words
An ink jet recording liquid of claim 1, wherein the polymer forming the shell has a glass transition point in the range of 60° C to 120° C and the polymer forming the core has a glass transition point in the range of -50° C to 20° C.
Claim 3
Dependent Claim
27 words
An ink jet recording liquid of claim 1, wherein the aqueous dispersion-type resin has an average particle size in the range of 20 nm to 200 nm.
Claim 4
Dependent Claim
40 words
An ink jet recording liquid of claim 1, wherein the aqueous dispersion-type resin contains resin particles having a particle size of at least 1000 nm in an amount equal to or less than 10 wt.% of the aqueous dispersion-type resin.
Claim 5
Dependent Claim
30 words
An ink jet recording liquid of claim 1, wherein the aqueous dispersion-type resin is contained in an amount in the range of 0.1 to 10 wt.% of the recording liquid.
Claim 6
Dependent Claim
30 words
An ink jet recording liquid of claim 5, wherein the aqueous dispersion-type resin is contained in an amount in the range of 0.5 to 5 wt.% of the recording liquid.
Claim 7
Dependent Claim
30 words
An ink jet recording liquid of claim 1, wherein the weight ratio of the shell to the core falls within the range of 10 : 90 to 70 : 30.
Claim 8
Dependent Claim
28 words
An ink jet recording liquid of claim 1, wherein the polymer forming the shell contains a carboxyl group and has an acid value of 50 to 250 mgKOH/g.
Claim 9
Dependent Claim
17 words
An ink jet recording liquid of claim 1, wherein the aqueous medium contains glycerin and 1,3-propane diol.
Claim 10
Dependent Claim
88 words
A process for the preparation of an ink jet recording liquid, which comprises a step of preparing an aqueous dispersion-type resin by polymerizing a polymerizable monomer, which provides a polymer having a glass transition point of -100° C to 40° C, in an aqueous medium in the presence of a resin-type emulsifying agent composed of a polymer having a glass transition point in the range of 50° C to 150° C, and a step of dispersing the resulting aqueous dispersion-type resin with a pigment in the aqueous medium.
References Cited (Backward Citations)
No citation records indexed.
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