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Novel polyethylene copolymer compositions prepared with a homogeneous catalyst system are characterized by having a unique high molecular weight, low comonomer (high density) fraction. These heterogeneous/homogeneous compositions may be prepared using a solution polymerization process in which the p

Novel polyethylene copolymer compositions prepared with a homogeneous catalyst system are characterized by having a unique high molecular weight, low comonomer (high density) fraction. These heterogeneous/homogeneous compositions may be prepared using a solution polymerization process in which the polymerization reactor contains a gradient in temperature, catalyst concentration or monomer concentration. The heterogeneous/homogeneous compositions of this invention are easily processed into films having excellent tear strengths and low hexane extractables.

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What is claimed is: 1. A heterogenized/homogeneous polymer composition comprising: A) from 90 to 98 eight % of a first polymer fraction having a density of from 0.880 to 0.945 grams per cubic centimeter as measured by ASTM D792; a melt index, I2, of from 0.1 to 200 grams per 10 minutes as determine

What is claimed is: 1. A heterogenized/homogeneous polymer composition comprising: A) from 90 to 98 eight % of a first polymer fraction having a density of from 0.880 to 0.945 grams per cubic centimeter as measured by ASTM D792; a melt index, I2, of from 0.1 to 200 grams per 10 minutes as determined by ASTM D1238; less then 2 weight % hexane extractables; and a substantial absence of homopolymer wherein said first polymer fraction comprises at least one homogeneous copolymer of ethylene and at least one C4 to 10 alpha olefin, and wherein each of said at least one homogeneous copolymer is characterized by having a molecular weight distribution, Mw/Mn, of less then three; and B) from 2 to 10 weight % of a second polymer fraction having a higher molecular weight, Mw, than that of said first fraction; a higher density than said first fraction; and a lower alpha olefin content than said first fraction, wherein said second polymer fraction comprises at least one second homogeneous polymer of ethylene, optionally with at least one C4 to 10 alpha olefin comonomer, and wherein each of said at least one second homogeneous polymer of ethylene is characterized by having a molecular weight distribution, Mw/Mn, of less than 3, and by having less than 4 short chain branches per 1,000 carbon atoms. 2. The polymer composition of claim 1 when prepared in a solution polymerization process using a catalyst system comprising an organometallic complex of a group 4 metal having an activity greater than 250,000 grams of polymer composition per gram of said group 4 metal. 3. The polymer composition of claim 1 containing less than 2 weight % hexane extractables. 4. The polymer composition of claim 1 having an overall composition density of from 0.910 to 0.940 grams per cubic centimeter as determined by ASTM D792. 5. The polymer composition of claim 1 wherein said first polymer fraction comprises at least one homogeneous copolymer of ethylene and octene-1. 6. Film prepared from the polymer composition of claim 1. 7. Film prepared from a blend of the polymer composition of claim 1 and at least one additional polyethylene selected from the group consisting of high pressure linear low density polyethylene; heterogeneous linear low density polyethylene; heterogeneous high density polyethylene; and homogeneous linear low density polyethylene. 8. Film according to claim 7 having a thickness of from 0.5 mil to 3.0 mil; a machine direction tear strength as determined by ASTM D1922 of greater than 300 grams per mil; and a hexane extractables content of less than 2 weight %. 9. A multilayer film structure comprising at least one layer of film according to claim 6. 10. A multilayer film structure comprising at least one layer of film according to claim 7. 11. A sealed package manufactured from a film according to claim 6. 12. A trash bag manufactured from a film according to claim 6. 13. A liquid package manufactured from a film according to claim 6. 14. A heavy-duty package manufactured from a film according to claim 6. 15. A pallet wrap package manufactured from a film according to claim 6.