Claims
- 1. A composition comprising a blend of polyethylene and an isotactic poly-alpha-olefin homopolymer, together with a diblock copolymer compatibilizer of polyethylene block and an atactic poly-alpha-olefin block having no melting point, said isotactic poly-alpha-olefin homopolymer and said atactic poly-alpha-olefin block having the same monomer units, said diblock copolymer compatibilizer being formed by sequentially polymerizing ethylene and alpha-olefin in the presence of at least one metallocene compound and a non-coordinating anion, and the diblock copolymer having terminal unsaturation, at least 30% of which is vinylidene unsaturation.
- 2. The composition of claim 1 wherein the poly-alpha-olefin has from 2 to about 16 carbon atoms.
- 3. The composition of claim 2 wherein the compatibilizer is present in the range of from about 0.5 to about 10 wt %.
- 4. The composition of claim 3 wherein the olefin is propylene.
- 5. The composition of claim 1 wherein said isotactic poly-alpha-olefin has from 3 to about 16 carbon atoms, said blend of polyethylene and poly-alpha-olefin homopolymer having a ratio of polyethylene to poly-alpha-olefin in the range of 95:5 to 5:95, and the amount of said diblock copolymer being in the range of about 0.5 wt % to about 10 wt % based on the total weight of the blend.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 08/698,617 filed Aug. 16, 1996, which is a rule 60 continuation of U.S. patent application Ser. No. 05/416,266, filed Apr. 14, 1995 and now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
WO9112285 |
Aug 1991 |
WOX |
Non-Patent Literature Citations (2)
Entry |
Alger, "Polymer Science Dictionary", 2nd ed., Chapman & Hall, New York, pp. 31, 274 (1997). |
Encyclopedia of Polymer Science and Engineering, vol. 6, Wiley & Sons, 1986, p. 455. |
Continuations (1)
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Date |
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Parent |
416266 |
Apr 1995 |
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Continuation in Parts (1)
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Number |
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698617 |
Aug 1996 |
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