Resources Contact Us Home
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
Pressure washer
Method and system for remotely testing a wireless device
Detection system and method for mobile device application
System and method for conditionally sending a request for data to a home node
Fused thiazole derivatives as kinase inhibitors
Methods and systems for delivering customized advertisements
Subband SNR correction in a frequency selective scheduler
  Randomly Featured Patents
Recovering polarization of light of arbitrary polarization propagating through distoring medium by phase conjugation reflection back through said medium
Device for reading out information stored in a storage layer
Sheet of bath tissue
Image forming apparatus with heat control of image bearing member
System, array and non-porous solid support comprising fixed or immobilized nucleic acids
Benzospiroalkene compounds
Cylindrical mount for optical components of a variable-power objective
LED luminaire with electronically adjusted color balance
Building panel joint
Ink jet printing apparatus