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:
Aug. 22, 2000
Filed:
Sep. 17, 1998
Tetsuya Nakamura, Ichihara, JP;
Masaya Tsubokawa, Ichihara, JP;
Idemitsu Petrochemical Co., Ltd., Tokyo, JP;
Abstract
A propylene resin composition containing a phenolic antioxidant, and a phosphorus-containing antioxidant which has a differential melt index (.DELTA.MI) calculated from a melt index (MIi) as measured at a propylene temperature of 230.degree. C. and under a load of 2,160 g and a melt index (MIe) as measured at a propylene temperature of 230.degree. C. and under a load of 2,160 g after five repetitions of a 100% recycle test is not greater than 0.5 g/10 min, and MIe is not greater than 1.2 g/10 min. This propylene resin composition enables manufacture of large-sized blow-molded articles featuring light weight, excellent rigidity, dimensional stability, heat resistance and showing good drawdown resistance, suitable for continuous blow molding. Blow moldings are advantageously used as automobile bumpers, bumper beams, or like parts.