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. 12, 2016
Filed:
Aug. 26, 2014
Bayer Materialscience Llc, Pittsburgh, PA (US);
Sumika Bayer Urethane Co., Ltd., Amagasaki, JP;
Margaret A. Kendi, Coraopolis, PA (US);
Steven Owens, Sewickley, PA (US);
Makoto Nakao, Nishinomiya, JP;
Covestro LLC, Pittsburgh, PA (US);
Sumika Bayer Urethane Co. Ltd., Hyogo Pref., Amagasaki, JP;
Abstract
Disclosed are waterborne coating compositions that include: (a) a base-neutralized carboxylic acid functional polyacrylate; and (b) a hydrophilic polycarbodiimide, in which (a) and (b) are present in relative amounts such that a ratio of carbodiimide groups to carboxylic acid groups in the composition is greater than 0.2:1, and in which the composition is substantially free of isocyanate functionality. Also disclosed are methods of using such compositions to produce a dry-erase surface and kits that include such compositions.