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:
Apr. 29, 2025
Filed:
Sep. 25, 2020
3m Innovative Properties Company, St. Paul, MN (US);
Paul B. Armstrong, St. Paul, MN (US);
Jonathan A. Anim-Addo, New Hope, MN (US);
Bryan V. Hunt, Nowthen, MN (US);
Evan L. Schwartz, Vadnais Heights, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Described herein is a dicarboxylic acid compound of formula (I): Wherein: Rcomprises an aryl group, Ris an alkylene group comprising 1 to 6 carbon atoms, n is 0 or 1, Ris H or CH, and X is S or NZ, wherein Z is H, an alkyl group comprising 1 to 4 carbon atoms or a phenyl group. Such compounds can be used to modify the surface of inorganic particles. These modified inorganic particles may then be advantageously used in polymerizable resins to increase the refractive index of the resulting composite, while enabling good flow properties of the polymerizable composition.