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:
Mar. 18, 2008
Filed:
Dec. 27, 2002
Ryuma Mizushima, Wakayama, JP;
Isao Tsuru, Wakayama, JP;
Koji Azuma, Wakayama, JP;
Takehiro Tsutsumi, Wakayama, JP;
Ryuma Mizushima, Wakayama, JP;
Isao Tsuru, Wakayama, JP;
Koji Azuma, Wakayama, JP;
Takehiro Tsutsumi, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
A water-based ink comprising an aqueous dispersion of polymer particles made of a water-insoluble vinyl polymer containing a colorant, wherein the water-insoluble vinyl polymer is prepared by polymerizing a monomer composition comprising a specific monomer A such as a monomer A1 represented by the formula (I): wherein Ris hydrogen or methyl, Ris hydrogen, alkyl or alkylphenyl, and n is 1 to 30; a monomer having a salt-forming group; and a monomer copolymerizable with the monomer A and the monomer having a salt-forming group. The water-based ink can be suitably used as a water-based ink for inkjet recording and the like.