Patent ID: 6740707
Filing Date: 2004-05-25
Classification: C08L

Abstract:
A fuel system part comprising:a mold formed from an injection molded resin composition, wherein the resin composition comprises (a) a polyphenylene sulfide resin and (b) an olefin based resin, an amount of the (a) polyphenylene sulfide resin and the (b) olefin based resin is 80 weight % or more of the entire resin composition, and the content of the (b) olefin based resin is 10 to 60 parts by weight relevant to 100 parts by weight of the (a) polyphenylene sulfide resin, the (b) olefin based resin consisting of (b1) olefin based (co)polymer having functional group and (b2) olefin based (co)polymer without functional group, the contents of the (b1) olefin based (co)polymer having functional group and the (b2) olefin based (co)polymer without functional group are 10 to 40% by weight and 60 to 90% by weight relevant to 100 parts by weight of (b) olefin based resin, respectively, the resin composition has a fuel permeability coefficient (Fuel C/ethanol=90/10) of 3.3Ã—10âˆ’16 molÂ·m/m2Â·sÂ·Pa or less at 40Â° C., and a melting flow rate of (a) polyphenylene sulfide resin is about 100 to 300 g/10 min.