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:
Aug. 12, 2014
Filed:
Nov. 16, 2011
John N. Argyropoulos, Midland, MI (US);
Debkumar Bhattacharjee, Blue Bell, PA (US);
Donald C. Schall, Lansdale, PA (US);
Allen Xu, Shanghai, CN;
Aaron Yang, Shanghai, CN;
Louie Luo, Shanghai, CN;
John N. Argyropoulos, Midland, MI (US);
Debkumar Bhattacharjee, Blue Bell, PA (US);
Donald C. Schall, Lansdale, PA (US);
Allen Xu, Shanghai, CN;
Aaron Yang, Shanghai, CN;
Louie Luo, Shanghai, CN;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The present invention provides two-component polyurethane compositions comprising, as one component, polyisocyanate compositions of the isocyanurate of one or more bis(isocyanatomethyl)cyclohexane or, preferably, a mixture of two or more of these, and of the isocyanurate of hexamethylene diisocyanate (HDI trimer), and, as the other component, a mix of a soft polyol having a hydroxyl functionality of from 2.5 to 5.0 and a molecular weight of from 500 to 3,000, and a hard polyol. Such compositions provide coatings, especially clear topcoats, which exhibit excellent scratch and mar and solvent resistance in addition to a good balance of hardness and flexibility without the need for increasing the volatile organic content (VOC) of the compositions. Also provided are compositions of a polyisocyanate compositions of the isocyanurate of one or more bis(isocyanatomethyl)cyclohexane with soft polyol which have lower VOCs.