| http://www.w3.org/ns/prov#value | - The gum base composition can contain conventional elastomer solvents to aid in softening the elastomer base component, for example trepanned resins such as polymers of alpha-pinene or beta-pinene, methyl, glycerol or pentaerythritol esters of rosins or modified rosins and gums, such as hydrogenated, dimerized or polymerized rosins, or combinations comprising at least one of the foregoing resins, t
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