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:
Jan. 07, 2020
Filed:
Jun. 30, 2015
Kuraray Co., Ltd., Kurashiki-shi, JP;
Atsuhiro Nakahara, Tainai, JP;
Toru Abe, Tainai, JP;
Toru Takahashi, Tainai, JP;
Hiroshi Ozawa, Tainai, JP;
KURARAY Co., Ltd., Kurashiki-shi, JP;
Abstract
A methacrylic resin composition comprises not less than 90% by mass and not more than 100% by mass of a methacrylic resin [A] having: the total content of a structural unit derived from methyl methacrylate of not less than 90% by mass; a molecular weight Mof not less than 30000 and not more than 100000 in terms of polystyrene corresponding to the retention time indicating the value of the maximum strength in a chromatogram obtained by gel permeation chromatography; the area Sof a region enclosed by an approximate curve obtained by fitting the data of a range indicating the strength of not less than 70% relative to the value of the maximum strength to a Gaussian function by the method of nonlinear least squares and the base line of the chromatogram of 45 to 80% of the area Senclosed by the chromatogram and its base line; and the ratio Mw/Mnof a weight average molecular weight Mwto a number average molecular weight Mnof not less than 1.01 and not more than 1.20 in terms of polystyrene computed based on an approximate curve obtained by the above fitting.