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US 6,271,302 B1Granted
Polyacetal resin composition for fuel-contacting parts
AssigneePolyplastics Co., Ltd.
InventorMitsunori Matsushima
Life of this patent
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Abstract
A polyacetal resin composition for fuel-related parts having an excellent creeping resistance, high conductivity and high thermal stability in the kneading or molding step is provided. The composition contains (A) a polyacetal resin, (B) glass fibers, (C) a conductive carbon and (D) a polyurethane resin, and has a volume resistivity of not higher than 1×105 Ωcm and, as the creeping resistance, such a tensile creep strength that it is not ruptured under a stress of 20 MPa in 60° C. water for at least 200 hours.
Claims4
A polyacetal resin composition for fuel-related parts comprising:
- (A) 100 parts by weight of a polyacetal resin,
- (B) 5 to 20 parts by weight of glass fibers,
- (C) 5 to 20 parts by weight of conductive carbon, and
- (D) 0.01 to 10 parts by weight of a polyurethane resin, wherein said composition exhibits a volume resistivity of not higher than 1×105 Ωcm and a creep resistance such that a test piece according to ASTM D-638 formed of the composition does not rupture under a stress of 20 MPa in 60° C. water for at last 200 hours.
1 more element
Dependencies are inferred from the claim text.