Elastomers having reduced hysteresis prepared with vinyl imidazole
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United States of America Patent
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Sep 13, 1994
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N/A
app pub date -
Nov 3, 1993
filing date -
Nov 3, 1993
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Abstract
A tire treadstock elastomer having reduced hysteresis is prepared by (1) preparing a living polymer by anionic polymerization of a conjugated diene or copolymerization of a conjugated diene with a monovinyl aromatic hydrocarbon, (2) endcapping the living polymer with at least one equivalent, preferably 3 to 15 equivalents, of a 1-vinylimidazole or 1-vinylbenzimidazole, preferably 1-vinylimidazole; (3) quenching and recovering the endcapped polymer and (4) curing the endcapped polymer using a conventional rubber curing recipe to form an elastomer having reduced hysteresis. This elastomer either alone or blended with a conventional treadstock rubber may form a tire treadstock.
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