Claims
- 1. A destructively bonded extrusion laminate comprising:
- (1) a first layer of a blend of maleated high molecular weight polypropylene/low density polyethylene; and
- (2) a second layer of a substrate primed with a polyethyleneimine primer.
- 2. The article of manufacture according to claim 1 wherein said first layer is about 0.2 and 30 mils.
- 3. The article of manufacture according to claim 2 wherein a third layer comprised of an olefin polymer is coated on said first layer, said first layer being between said second layer and said third layer.
- 4. The article of manufacture according to claim 3 wherein said olefin polymer of said third layer contains a corrosion inhibitor.
- 5. The article of manufacture according to claim 1 wherein said blend of said first layer contains a corrosion inhibitor.
- 6. The article of manufacture according to claim 1 wherein said substrate of said second layer is a non-porous substrate primed with a polyethyleneimine primer.
- 7. The article of manufacture according to claim 1 wherein said blend of said first layer contains at least 30 weight percent maleated high molecular weight polypropylene.
- 8. The article of manufacture according to claim 7 wherein said blend contains about 50 to 95 weight percent maleated high molecular weight polypropylene and about 5 to 50 weight percent low density polyethylene.
- 9. The article of manufacture according to claim 1 wherein said maleated high molecular weight polypropylene of said blend has been maleated with about 0.1 to 2 weight percent maleic anhydride.
- 10. The article of manufacture according to claim 1 wherein said maleated high molecular weight polypropylene of said blend in said first layer has a melt flow rate of about 40 to 70 decigrams per minute at 230.degree. C.
- 11. The article of manufacture according to claim 1 wherein said low density polyethylene of said blend in said first layer has a polydispersity index between 3 and 15.
- 12. The article of manufacture according to claim 1 wherein said low density polyethylene of said blend of said first layer has a melt index between about 1 and 10 decigrams per minute at 190.degree. C.
Parent Case Info
This is a divisional application of application Ser. No. 07/815,726 filed Dec. 30, 1991 now U.S. Pat No. 5,248,364.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
815726 |
Dec 1991 |
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