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. 21, 2012
Filed:
Mar. 21, 2006
Shi-jun Yang, Upper Dublin, PA (US);
Richard M. Abel, Bensalem, PA (US);
Jack J. Reilly, Blue Bell, PA (US);
Elizabeth E. Grimes, Souderton, PA (US);
Shi-Jun Yang, Upper Dublin, PA (US);
Richard M. Abel, Bensalem, PA (US);
Jack J. Reilly, Blue Bell, PA (US);
Elizabeth E. Grimes, Souderton, PA (US);
Arkema France, Colombes, FR;
Abstract
The invention relates to a novel acrylic impact sheet having bullet-resistant properties. The bullet-resistant sheet is composed of a copolymer of methyl methacrylate and a Calkyl methacrylate, plus impact modifiers that are refractive index matched or mismatched with the polymer matrix. The sheet provides very good bullet resisting performance, with better performance at the same thickness as current products, or the same performance at less thickness, thereby providing a product having better properties and/or less weight. The reduced weight of a bullet resistant acrylic sheet formulation will provide reduced raw material, transportation, and construction costs. Bullet resistant transparent glazing is an especially useful application for the invention.