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
System and method of automatic piloting for in-flight refuelling of aircraft, and aircraft comprising said system
Method for transmitting an electronic short message to multiple receivers
Autobrake and decel control built-in test equipment
Flat display panel and method for forming the same
Bottle
Fabricated leaf tea products
Light emitting device
  Randomly Featured Patents
Infrared cloaking emergency survival blanket
Powertrain control device for a vehicle using targeted tongue generation for eliminating shift shock
Ballistocardiograph
Drilling jar
Arrangement for separating fruits into fruit pulp, fruit skin and fruit core
Method and apparatus for determining the exact position of a target using a receiving device comprising a linear active part formed from a variety of discrete radiation-sensitive elements
Watch
Broadcast receiving apparatus and control method thereof
Air circulator
Word hypothesizer for continuous speech decoding using stressed-vowel centered bidirectional tree searches