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:
Sep. 20, 2022
Filed:
Dec. 06, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Thomas P. Klun, Lakeland, MN (US);
Chunjie Zhang, Shoreview, MN (US);
Richard J. Pokorny, Maplewood, MN (US);
Benjamin R. Coonce, South St. Paul, MN (US);
Benjamin G. Sonnek, Mahtomedi, MN (US);
Gregg A. Ambur, River Falls, WI (US);
Jung-Sheng Wu, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A curable composition comprises: a) 91 to 98.2 weight percent of: (i) at least one polymerizable compound containing at least one carbamylene group; or (ii) at least one polyurethane precursor system; and b) 0.2 to 9 weight percent of alpha alumina particles having a particle size distribution with a Dv50 of from 0.1 to 1 micron, wherein the weight percentages of a) and b) are based upon the total amount of a) and b). Cured compositions and their use in thermoforming are also disclosed.