ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,985, issued on Aug. 25, was assigned to Sumitomo Chemical Co. Ltd. (Tokyo).
"Polypropylene resin composition" was invented by Yuya Yamamoto (Chiba, Japan) and Takeshi Maruyama (Chiba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A polypropylene resin composition which contains: from 20% by weight to 50% by weight of a heterophasic propylene polymerization material (A) that has a melt flow rate of from 70 g/10 minutes to 300 g/10 minutes as determined at 230deg C. under a load of 2.16 kgf in accordance with JIS-K-6758; from 15% by weight to 40% by weight of an ethylene/Alpha-olefin copolymer (B-1) that has a melt flow rate of from 2 g/10 minu...