Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Makoto Ito0
Gaku Maruyama0
Kazuo Katayose0
Kenta Susuki0
Date of Patent
March 30, 2010
Patent Application Number
10584268
Date Filed
December 21, 2004
Patent Primary Examiner
Patent 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.
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