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:
Oct. 30, 2001
Filed:
Dec. 06, 1999
Hirofumi Uno, New York, NY (US);
Jun Nakauchi, Tokyo, JP;
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Abstract
A multilayered acrylic polymer comprising an innermost layer polymer (A) formed from a C,alkyl methacrylate, a C,alkyl acrylate, etc., an intermediate layer polymer (B) formed from a C,alkyl acrylate, an aromatic vinyl monomer, etc., and an outermost layer polymer (C) formed from a C,alkyl methacrylate, a C,alkyl acrylate, etc., and wherein the average value of the coating ratio, i.e. [(minimum thickness of the intermediate layer)÷(maximum thickness of the intermediate layer)]×100, is not less than 30%; and a methacrylic resin composition containing the same. This multilayered acrylic polymer can improve the falling-ball or falling-weight impact strength, resistance to impact whitening, transparency and other properties of the methacrylic resin composition.