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:
Oct. 29, 2019
Filed:
Jun. 27, 2013
Toyo Ink SC Holdings Co., Ltd., Chuo-ku, JP;
Toyo Ink Co., Ltd., Chuo-ku, JP;
Toru Oya, Chuo-ku, JP;
Yuki Sato, Chuo-ku, JP;
Yoshitaka Tone, Chuo-ku, JP;
Harunori Narihiro, Chuo-ku, JP;
TOYO INK SC HOLDINGS CO., LTD., Chuo-ku, JP;
TOYO INK CO., LTD., Chuo-ku, JP;
Abstract
The present invention relates to an alcohol-based printing ink composition, comprising a colorant (E), a medium and a polyurethane urea resin (D) obtained by reacting a polyol (A), a diisocyanate (B) and a chain extender (C), wherein the polyol (A) comprises a polyester polyol (A0) having a repeating unit derived from a saturated hydroxycarboxylic acid having a side chain, and the medium comprises an alcohol (F), wherein the proportion of the alcohol (F) is at least 50% by weight relative to a value of 100% by weight for the total medium. Accordingly, the invention provides a printing ink comprising an alcohol having minimal environmental impact as the main component of the ink medium, the ink exhibiting excellent colorant dispersibility and storage stability, and having excellent re-solubility during long runs.