Abstract: A durable colored article having fluorescent properties comprises a substantially solventless polyvinyl chloride matrix, a thioxanthene fluorescent dye, and a secondary or tertiary hindered amine light stabilizer having a molecular weight less than about 1000 grams/mole. The invention has the advantage in that it provides a flexible polyvinyl chloride film that exhibits durable fluorescent colors.
Type:
Grant
Filed:
October 23, 1997
Date of Patent:
August 29, 2000
Assignee:
3M Innovative Properties Company
Inventors:
Kenneth M. White, Lee A. Pavelka, Vera L. Lightle, James C. Coderre
Abstract: The present invention provides an article comprising a curable resin and a filler associated with the resin. The incorporation of fillers into the casting materials of the present invention adds substantially to the strength of the cured casting material as well as to the handling properties of the uncured casting tape or bandage. The incorporation of fillers into the casting materials of the present invention also imparts air and vapor porosity to the cured casting materials. If desired articles of the present invention may also incorporate fibers (either individually, bundled, or in the form of a light-weight scrim) to provide increased cohesiveness to the uncured article. Extremely moldable casting tapes are also provided which comprise a highly-filled composite material coated on a light-weight scrim. The casting tapes of this embodiment handle like traditional plaster of Paris casts yet cure to a weight-bearing cast in less than one hour.
Type:
Grant
Filed:
November 4, 1997
Date of Patent:
August 8, 2000
Assignee:
3M Innovative Properties Company
Inventors:
Matthew T. Scholz, Jason L. Edgar, Andrew J. Callinan, Dean A. Ersfeld, Worku A. Mindaye
Abstract: Microstructured articles of the invention comprising, in order: a) a retroreflective microstructured member; b) a sealing layer melt-bonded to the microstructured member; and c) a backing member. The backing member is a fibrous web comprising a plurality of multifilament strands and is melt-bonded to the second surface of the sealing layer.
Type:
Grant
Filed:
November 1, 1996
Date of Patent:
December 21, 1999
Assignee:
3M Innovative Properties Company
Inventors:
Jeffrey D. Janovec, James C. Coderre, James E. Lasch, Kenneth L. Smith