| prov:value
| - must contain unsaturation so that polymerization can occur and is selected from the group consisting of olefins having 4 to 20 carbon atoms. [0048] Preferred reactants are olefins of 4 to 12 carbon atoms such as 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-undecene and 1-dodecene, 2-methyl-1-pentene, styrene, ??-methylstyrene, 2-methyl-1-butene, 3-methyl-1-butene, 4-methyl-1-pe
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