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:
Mar. 30, 2010
Filed:
Dec. 21, 2004
Gaku Maruyama, Tsuruga, JP;
Kenta Susuki, Tsuruga, JP;
Makoto Ito, Tsuruga, JP;
Kazuo Katayose, Tsuruga, JP;
Gaku Maruyama, Tsuruga, JP;
Kenta Susuki, Tsuruga, JP;
Makoto Ito, Tsuruga, JP;
Kazuo Katayose, Tsuruga, JP;
Toyo Boseki Kabushiki Kaisha, Osaka-shi, JP;
Abstract
The present invention relates to such a polyamide resin composition that is suitably used as a material of a gasoline tank and a material of a molded article, such as a hollow molded container including a beverage bottle, a film and a sheet. A polyamide resin that is good in heat stability upon molding and suffers less increase in filter back pressure is provided by regulating a polyamide resin composition to have a phosphorus content of from 30 to 200 ppm (excluding 200 ppm), and a sodium content/phosphorus content ratio (molar ratio) of from 3 to 7 (excluding 3 and 7) or regulating it to have a phosphorus content less than 30 ppm and an alkali metal content less than 45 ppm.