Invention Grant
- Patent Title: Aqueous pigment dispersion, aqueous green ink for inkjet recording, and aqueous red ink for inkjet recording
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Application No.: US15762221Application Date: 2016-09-27
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Publication No.: US10647864B2Publication Date: 2020-05-12
- Inventor: Toshihisa Kimura , Satoru Toida
- Applicant: DIC Corporation
- Applicant Address: JP Tokyo
- Assignee: DIC CORPORATION
- Current Assignee: DIC CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: McDermott Will & Emery LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@58d49212 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@4fc41bed
- International Application: PCT/JP2016/078376 WO 20160927
- International Announcement: WO2017/061301 WO 20170413
- Main IPC: C09D11/322
- IPC: C09D11/322 ; B41M5/00 ; C09D11/326 ; C09D11/106 ; C09D153/00 ; C08F297/02 ; C09B67/46 ; C08F8/12 ; C09D17/00

Abstract:
An object of the present invention is to provide an aqueous pigment dispersion that provides an aqueous ink for inkjet recording that contains a reduced number of coarse particles, is excellent in ejection stability, and is applicable to a printer equipped with a high-resolution inkjet head and to provide the aqueous ink for inkjet recording. The present invention relates to an aqueous pigment dispersion containing: a polymer (A) that has anionic groups, has a solubility in water of 0.1 g/100 mL or less and a number average molecular weight within the range of 1,000 to 6,000, and forms fine particles in water when the degree of neutralization of the anionic groups with a basic compound is 100%; a polyhalogenated metal phthalocyanine pigment or a diketopyrrolopyrrole pigment; and water. The invention also relates to an aqueous ink for inkjet recording.
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