Back to results
US 4,904,731 AGranted
Polymeric composition
AssigneeShell Oil Company
InventorsGeoffrey Holden, David R. Hansen
Life of this patent
Estimating the term…
Abstract
A polymeric composition comprising: an olefin polymer; a hydrogenated block copolymer comprising at least two polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units and at least one block containing predominantly hydrogenated, conjugated diolefin monomeric monomer units; and an LLDPE. The weight ratio of block copolymer to LLDPE in the polymeric composition will be within the range from about 5:1 to about 1:3. Shaped structures prepared with the polymeric composition will generally exhibit good clarity and good impact strength.
Claims10
A polymeric composition comprising:
- 100 parts by weight of a random copolymer of ethylene and propylene, the copolymer containing from about 97 to 94%w polymerized propylene and from about 6 to 3%w polymerized ethylene;
- from about 2.5 to about 10 parts by weight, of a selectively hydrogenated block copolymer comprising at least two polymeric blocks containing predominantly polymerized monoalkenyl aromatic hydrocarbon monomer units and at least one polymeric block containing predominantly polymerized, hydrogenated diolefin monomer units;
- and LLDPE wherein the LLDPE is a copolymer of ethylene and less than about 20% by weight of an alpha-olefin having 3 to 10 carbon atoms, the weight ratio of hydrogenated block copolymer to LLDPE being within the range from about 5:1 to about 1:3.
Dependencies are inferred from the claim text.