| http://www.w3.org/ns/prov#value | - The polymers which are disclosed above, and particularly the polymers of isoolefins, boil above 100 0., and preferably from about 150 to about 275 C. These materials may be made by polymerization of various oleflns or mixed oleflns, using catalysts such as sulfuric or phosphoric acid, aluminum chloride, zinc chloride, boron fluoride, or other similar active halide catalysts of the Friedel-Crafts t
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