Propylene-based polymer additives for improved tire tread performance
AssigneeExxonMobil Chemical Patents Inc.
InventorsEdward J. Blok, Anthony J. Dias, Sunny Jacob, Ian C. Stewart, Yong Yang, Jingwen Zhang
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Abstract
A tire tread composition is disclosed. The tire tread composition includes components, by weight of the composition, within the range from: 5 to 75 wt % of a diene elastomer; 0 to 40 wt % of processing oil; 20 to 80 wt % of filler; a curative agent; and 5 to 30 wt % of a propylene-ethylene-diene terpolymer containing from 2 wt % to 40 wt % of ethylene and/or C4-C20 α-olefins derived units, from 0.5 to 10 wt % of diene derived units, and having a heat of fusion, as determined by DSC, of from 0 J/g to 80 J/g.
Claims9
A tire tread composition comprising components, by weight of the composition, within the range from:
- 5 to 75 wt % of a diene elastomer;
- 0 to 40 wt % of processing oil;
- 20 to 80 wt % of filler;
- a curative agent;
- and
- 5 to 30 wt % of a propylene-ethylene-diene terpolymer containing from 2 to 40 wt % of ethylene and/or C4-C20 α-olefins derived units, from 2 wt % to 20 wt % ethylene, and from 0.5 to 10 wt % of ethylidene norbornene, and having a heat of fusion, as determined by DSC, of 0 J/g, and a melt flow rate (MFR) at 2.16 kg weight at 230° C. of 0.2 to 10 g/10 min.
Dependencies are inferred from the claim text.