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US 4,843,129 AGranted
Elastomer-plastic blends
AssigneeExxon Research & Engineering Co.
InventorsLawrence Spenadel, Joel H. Grosser, Stephen M. Dwyer
Life of this patent
Estimating the term…
Abstract
A composition comprising: (a) at least one copolymer having at least one of M.sub.w /M.sub.n less than 2 and M.sub.z /M.sub.w less than 1.8; and (b) at least one plastic composition. The composition can be produced by preparing the elastomer and then blending it with the plastic. The composition can be subjected to an additional step of curing.
Claims17
A composition comprising:
- (a) at least one elastomer copolymer comprising ethylene and at least one other alpha-olefin, having a weight average molecular weight of at least 20,000, and at least one of M.sub.w /M.sub.n less than 2 and M.sub.z /M.sub.w less than 1.8, wherein at least two portions of essentially each copolymer chain of said copolymer, each portion comprising at least about 5 wt. % of the chain, differ in composition from one another by at least about 5 wt.% ethylene;
- and
- (b) at least one plastic composition.
Dependencies are inferred from the claim text.