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. 04, 2007
Filed:
Dec. 30, 2004
Christopher B. Walker, Jr., St. Paul, MN (US);
Brant U. Kolb, Afton, MN (US);
Emily S. Goenner, Shoreview, MN (US);
Vivian W. Jones, Woodbury, MN (US);
Sharon Wang, St. Paul, MN (US);
Joan M. Noyola, Maplewood, MN (US);
Christopher B. Walker, Jr., St. Paul, MN (US);
Brant U. Kolb, Afton, MN (US);
Emily S. Goenner, Shoreview, MN (US);
Vivian W. Jones, Woodbury, MN (US);
Sharon Wang, St. Paul, MN (US);
Joan M. Noyola, Maplewood, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The present invention includes ultraviolet curable compositions preferably containing discrete, crystalline zirconia nanoparticles with reactive, or copolymerizable, surface modification, in a polymerizable monomer/oligomer resin mixture. It is believed that copolymerizable surface modification provides a functional group that enables the functionalized particle to co-polmerize with the reactive monomers, oligomers, and crosslinkers in the formulation. Relative to surface modification of the nanoparticles, acrylate functionality is preferred over methacrylate functionality. On the other hand, methacrylate functionality is preferred over non-reactive, or nonpolymerizable, functionality. As the nanocomposite cures, the resultant network is heavily crosslinked by selection of raw materials with substantial acrylate functionality.