| http://www.w3.org/ns/prov#value | - The resin polymers can be modified by containing up to about 25 percent by weight units derived from piperylene dimers, piperylene trimers, and other unsaturated hydrocarbons containing from 4 to 6 carbon atoms such as butene and substituted butenes such as 2-methyl-l-butene, 2,3-di-methyl-l-butene, 2,3-dimethyl-2-butene, 3,3- dimethyl-l-butene; the pentenes and substituted pentenes such as l-pent
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