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:
Feb. 06, 2001
Filed:
Nov. 12, 1997
Jeffrey W. Stansbury, Frederick, MD (US);
Joseph M. Antonucci, Kensington, MD (US);
Kyung M. Choi, Gaithersburg, MD (US);
The United States of America as represented by the Secretary of the Commerce, Washington, DC (US);
Abstract
Disclosed are fluorinated materials for use in dental uses and non-dental uses, e.g., adhesives or coatings. Multifunctional monomers and prepolymers with pendant (meth)acrylate groups were prepared from epoxide ring-opening reactions. Resins based on the fluorinated monomers and prepolymers with diluent comonomers, were photocured as composites with particulate fillers. Fluorine contents of the prepolymers ranged from 15 to 65%. Composites with high transverse strength (up to 120 MPa), low water sorption (as low as 0.11 mass %) and extremely low polymerization shrinkage (as low as 3.4% by volume) were obtained. The fluorinated resins may be employed to produce hydrophobic dental composite materials with high strength and low polymerization shrinkage.