Gasoline-impermeable coatings

Details Gasoline-impermeable coatings Gasoline-impermeable coatings

C - Chemistry, Metallurgy

08

J

C08J 7/06 (2006.01) C07D 303/02 (2006.01) C07D 305/02 (2006.01) C08L 63/00 (2006.01) C09D 1/00 (2006.01)

Patent

CA 2486314

A coating that can be adhered to a polyethylene gasoline container to substantially reduce its gas permeability, and a gasoline container treated with such a coating. A single-component cationic curing composition with increased impermeability to gasoline vapour uses a bis 'F' epoxy in combination with a catalyst and oxetane. The invention takes advantage of a narrower ultraviolet absorption spectrum of the bis 'F' epoxy, whereby ultraviolet radiation outside the UV absorption spectrum of the bis ',F' will activate the catalyst, the highly active superacid from the antimonate anion, without any significant reduction of the cationic curing reaction. In the preferred embodiment the bis 'F' and oxetane combination is used along with various additives included for flow and cosmetic purposes.

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