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:
Dec. 20, 1994
Filed:
Jan. 19, 1993
Bach T Nguyen, Everett, WA (US);
Toshihiro Katagiri, Everett, WA (US);
Achilles Corporation, Tokyo, JP;
Abstract
There is disclosed a phosphorescent polyvinyl chloride ('PVC') film which exhibits an intense and long-lived afterglow. The phosphorescent PVC film contains a polymerized PVC-based resin, a primary and secondary plasticizer, a primary and secondary stabilizer, and a phosphorescent pigment. Within the practice of this invention, the primary stabilizer is solely a zinc-based stabilizer (non-zinc metal stabilizers are not employed); the secondary stabilizer is a tertiary organic phosphite; the primary plasticizer is a epoxidized soybean oil; the secondary plasticizer is selected from phthalates, adipates, trimellitates, azelates and phosphates; and the phosphorescent pigment is preferably a zinc sulfide phosphor. In addition to the phosphorescent PVC film, compositions and related methods are also disclosed.