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US 2014/0208619 A1Published application
Footwear Sole Comprising a Propylene-Based Elastomer, Footwear Comprising Said Sole, and Methods of Making Them
AssigneeExxonMobil Chemical Patents Inc.
InventorsLeander Kenens, Randal H. Kerstetter, III
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Abstract
Disclosed are footwear soles comprising a propylene-based elastomer. The presence of the propylene-based elastomer provides the footwear sole with a well-balanced combination of desired properties, including low density, low compression set, and weldability.
Claims24
A footwear sole, comprising a composition comprising:
- a propylene-based elastomer comprising at least about 50 wt % propylene-derived units and about 5 to about 35 wt % ethylene-derived units, based on the total weight of the propylene-based elastomer, wherein the propylene-based elastomer has a heat of fusion of less than about 80 J/g.
A method for manufacturing a footwear sole, comprising the step of:
- preparing a footwear sole comprising a composition comprising a propylene-based elastomer comprising at least about 50 wt % propylene-derived units and about 5 to about 35 wt % ethylene-derived units, based on total weight of the propylene-based elastomer, wherein the propylene-based elastomer has a heat of fusion of less than about 80 J/g.
A method for manufacturing footwear, comprising the steps of:
- (a) preparing a footwear sole comprising a composition comprising a propylene-based elastomer comprising at least about 50 wt % propylene-derived units and about 5 to about 35 wt % ethylene-derived units, based on total weight of the propylene-based elastomer, wherein the propylene-based elastomer has a heat of fusion of less than about 80 J/g;
- and
- (b) forming a footwear comprising the footwear sole in step (a).
A footwear sole, comprising a composition comprising:
- (a) a propylene-based elastomer comprising at least about 50 wt % propylene-derived units and about 5 to about 35 wt % ethylene-derived units, based on the total weight of the propylene-based elastomer, wherein the propylene-based elastomer has a heat of fusion of less than about 80 J/g;
- (b) an ethylene-based plastomer in an amount of about 30 phr relative to the total of the propylene-based elastomer and the ethylene-based plastomer, comprising about 50 to about 85 wt % ethylene-derived units and up to about 50 wt % of units derived from one or more olefins selected from 1-butene, 1-hexene, and 1-octene, based on the total weight of the ethylene-based plastomer;
- (c) a curing agent;
- (d) a coagent;
- and
- (e) a foaming agent.
3 more elements
Dependencies are inferred from the claim text.