Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Propylene polymers for films










Image Number 10 for United States Patent #6583227.

This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymer and copolymer using propylene with a small amount of comonomer, preferably ethylene. The polymerization is catalyzed by a dual metallocene catalyst system. The resulting polymers have a broad, bimodal molecular weight distribution. The resulting polymers are excellent for use in the production of biaxially oriented films or non-oriented films. Films prepared with these propylene polymers have a significantly broader processability range and can be evenly stretched at lower temperature compared to films prepared from traditional propylene polymer.








 
 
  Recently Added Patents
Storage system comprising multiple microprocessors and method for sharing processing in this storage system
Anthranilic diamide compositions for propagle coating
Temporal document trainer and method
Liquid crystal display having wide viewing angle
Automatic portable electronic device configuration
Data storage device with surface ornamentation
Crosslinked core/shell polymer particles
  Randomly Featured Patents
Optical arrangement for the reflecting microscopic examination of an object
Offshore aquaculture system
Methods, systems and computer program products for assessing network quality
DC-to-DC converter providing high current and low voltage
Digital frequency generation method and apparatus
Method of interpolation in an n-dimensional color space
Automatic assembly for delivering coffee infusions, with means for ejecting the coffee dry grounds
Replacement of steering rack boots
Rebreather system with depth dependent flow control and optimal PO.sub.2 d e
Mail box