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:
Jun. 26, 2001
Filed:
Nov. 29, 1999
Taiji Yamada, Ehime, JP;
Takashi Sakamoto, Ehime, JP;
Sumitomo Chemical Company Limited, Osaka, JP;
Abstract
The present invention provides a methyl methacrylate resin composition including (A) about 90 to 99% by weight of a methyl methacrylate polymer with a branched structure having a weight average molecular weight of about 80,000 to 400,000 and a molecular weight between branch points, defined by using a z-average molecular weight, of about 30,000 to 500,000 and (B) about 10 to 1% by weight of a high molecular weight methyl methacrylate polymer having a weight average molecular weight of about 1,000,000 to 5,000,000, which exhibits little drawdown in heat molding and is suitable especially for the production of large molded articles by extrusion molding, blow molding and expansion molding.