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:
Jul. 11, 2017
Filed:
Jan. 10, 2014
Toyo Ink SC Holdings Co., Ltd., Chuo-ku, JP;
Toyo Ink Co., Ltd., Chuo-ku, JP;
Satotaro Tanaka, Tokyo, JP;
Harunori Narihiro, Tokyo, JP;
Nobutaka Takenaka, Tokyo, JP;
Yuika Hayasaka, Tokyo, JP;
TOYO INK SC HOLDINGS CO., LTD., Chuo-ku, JP;
TOYO INK CO., LTD., Chuo-ku, JP;
Abstract
The present invention relates to an oil-based printing ink varnish comprising a polyurethane prepared using a polymeric polyol and a polyisocyanate as the main structural components, wherein the polyurethane is synthesized using, as a chain extender, a polyfunctional amine which contains at least one secondary amino group in each molecule and in which the total of the number of primary amino groups and the number of secondary amino groups is 3 or more per molecule. The present invention is able to provide a printing ink varnish containing a non-aromatic organic solvent and having excellent laminate strength, blocking resistance, dot reproducibility and plate clogging resistance, as well as a laminate ink containing the varnish.