| abstract |
Resinous enclosure members are disclosed which are surface sulfonated and neutralized to the extent that they contain about 0.001 milligram to about 50.0 milligrams of sulfonate groups per square centimeter wherein the groups are selected from ammonium sulfonate, metal sulfonate and substituted quaternary nitrogen sulfonate groups. The treated enclosure members are rendered substantially impervious to the penetration of various solvents, gases, and vapors by this treatment. The enclosure members are useful to retain or transport hydrocarbon solvents, perfumes, fuels, etc. and thus can be used as gasoline tanks, perfume bottles, plastic hoses, etc. |