NBR COMPOSITION, ARTICLE MADE OF NBR COMPOSITION, AND EVAPORATED FUEL PROCESSING APPARATUS FOR AUTOMOBILE

摘要

PROBLEM TO BE SOLVED: To provide an NBR composition or the like for preventing the deterioration of a polyester resin composition which is in contact with the NBR composition in an evaporated fuel path or the like in an evaporated fuel processing apparatus for automobile which uses a fuel containing alcohol.;SOLUTION: The NBR composition may be exposed to an atmosphere of an evaporated fuel, the composition being used while it is in contact with the polyester resin composition in the evaporated fuel processing apparatus for an automobile which uses a fuel containing alcohol. The composition is characterized in that, when pts.wt. of Group I consisting of zinc oxide is represented by x, the sum of pts.wt. of each of Group II consisting of at least one selected from the group consisting of calcium hydroxide, calcium oxide and calcium carbonate is represented by y, and the sum of pts.wt. of each of Group III consisting of at least one selected from the group consisting of magnesium oxide and magnesium hydroxide is represented by z, relative to 100 pts.wt. of NBR, the value of "x+0.08y+0.31z" is 4 or lower.;COPYRIGHT: (C)2009,JPO&INPIT