Patent Number: 6,252,002

Title: Methyl Methacrylate resin composition

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.

Inventors: Yamada; Taiji (Ehime, JP), Sakamoto; Takashi (Ehime, JP)

Assignee: Sumitomo Chemical Company Limited

International Classification: C08L 33/00 (20060101); C08L 33/12 (20060101); B29C 49/04 (20060101); B29C 49/06 (20060101); C08L 033/12 ()

Expiration Date: 06/26/2018