US Patent 7868058 Water-based ink

Patent 7868058 was granted and assigned to Kao Corporation on January, 2011 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Kao Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

78680580

Patent Inventor Names

Shigemi Wakabayashi0

Masayuki Narita0

Date of Patent

January 11, 2011

Patent Application Number

107406190

Date Filed

December 22, 2003

Patent Primary Examiner

‌

Patrick D. Niland

Patent abstract

An aqueous dispersion of polymer particles of a water-insoluble vinyl polymer containing a hydrophobic dye, wherein the water-insoluble vinyl polymer is prepared by polymerizing a monomer composition comprising an alicyclic (meth)acrylate, a salt-forming group-containing monomer, and a monomer copolymerizable with the alicyclic (meth)acrylate and the salt-forming group-containing monomer; and an ink comprising the aqueous dispersion. The aqueous dispersion is excellent in, for instance, storage stability, and the ink is excellent in, for instance, printing reliability, solvent resistance, water resistance and character quality.