| Patent Number |
Title Of Patent |
Date Issued |
| 7658875 |
Biaxially-oriented metallocene-based polypropylene films having reduced thickness |
February 9, 2010 |
| A polymer film having a thickness of 10 microns or less and improved barrier characteristics to both water vapor and oxygen is formed from a biaxially-oriented polypropylene film of isotactic polypropylene. The polypropylene is prepared by the polymerization of propylene in the prese |
| 7473751 |
Biaxially-oriented metallocene-based polypropylene films having reduced thickness |
January 6, 2009 |
| A polymer film having a thickness of 10 microns or less and improved barrier characteristics to both water vapor and oxygen is formed from a biaxially-oriented polypropylene film of isotactic polypropylene. The polypropylene is prepared by the polymerization of propylene in the prese |
| 7351478 |
Heat-seal films and method of manufacture |
April 1, 2008 |
| A heat-seal polymer film and method of forming such film is provided. The heat-seal film is formed from metallocene-catalyzed isotactic random copolymers of propylene and at least one other C.sub.2 to C.sub.8 alpha olefin, such as ethylene random. Such films show improved heat-seal c |
| 6881793 |
Polyproplylene materials and method of preparing polypropylene materials |
April 19, 2005 |
| A polypropylene material is prepared from a blend of heterophasic propylene copolymers and propylene homopolymers. The material is prepared by blending the polymers while they are in a molten state, and forming a film or sheet from the polymer blend. The material has particular applicati |
| 6878327 |
Process of making polypropylene fibers |
April 12, 2005 |
| A method for the production of polypropylene fibers from a propylene polymer including isotactic polypropylene produced by the polymerization of propylene in the presence of an isospecific metallocene catalyst. The polymer is heated to a molten state and extruded to form a fiber preform |
| 6824721 |
Polypropylene fibers |
November 30, 2004 |
| Process for the production of fibers formed from an ethylene-propylene copolymer characterized as a random copolymer of ethylene and isotactic polypropylene having a random ethylene content within the range of 2-12 mole %. The propylene content of the copolymer can have an isotacticity o |
| 6723769 |
Polymerization process |
April 20, 2004 |
| A process for the production and treatment of a stereoregular propylene polymer such as isotactic polypropylene. The isotactic polypropylene can be produced by catalysis employing a metallocene catalyst or employing a Ziegler-Natta catalyst. A polymerization reactor is operated to provid |
