The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2018
Filed:
Oct. 30, 2014
Dic Corporation, Tokyo, JP;
Yukie Uemura, Takaishi, JP;
Toshihisa Kimura, Kita-adachi-gun, JP;
Yasuo Oji, Takaishi, JP;
Hisakazu Tanaka, Takaishi, JP;
Nobuhiro Oe, Takaishi, JP;
Morio Sato, Komaki, JP;
Ryuuji Yokoyama, Kamisu, JP;
DIC CORPORATION, Tokyo, JP;
Abstract
Disclosed are an aqueous pigment dispersion and an aqueous ink for inkjet recording each of which includes a polymer (A), a pigment, and water. The polymer (A) has an anionic group, 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 the basic compound is 100%. Preferably, the polymer (A) is a polymer represented by general formula (1) (in formula (1), Arepresents an organic lithium initiator residue, Arepresents a polymer block of a monomer having an aromatic ring or a heterocycle, Ais a polymer block containing an anionic group, n represents an integer of 1 to 5, and B represents an aromatic group or an alkyl group).