Functionalized poly (ethylene-co-syndiotactic propylene)
AssigneeCornell Research Foundation, Inc.
InventorsLewis J. Fetters, Geoffrey W. Coates
Life of this patent
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Abstract
Poly(ethylene-co-syndiotactic propylene) functionalized with group(s), that enable crosslinking, e.g., vinyl or anhydride group(s), in admixture with crosslinking agent and filler is subjected to crosslinking reaction to provide filled copolymer. The presence of propylene in syndiotactic sequences provides lower entanglement molecular weight compared to other propylene placement and therefore allows more filler to be present than for other propylene placement. Crosslinking provides filled materials with good elastomeric properties.
Claims13
Poly(ethylene-co-syndiotactic propylene) functionalized with group(s) that enable crosslinking, the functionalized poly(ethylene-co-syndiotactic propylene) comprising from 49–70 mole percent ethylene, from 50–25 mole percent propylene, and from 1–5 mole percent crosslinking functionalizer, from 50 to 100 mole percent of the propylene being present in syndiotactic sequences, the functionalized poly(ethylene-co-syndiotactic propylene) having Mn ranging from 1,000 to 2,000,000 and Mw/Mn ranging from 1 to 10, the group(s) that enable crosslinking being vinyl group(s).
Dependencies are inferred from the claim text.