| Sign In to gain access to subscriptions and/or personal tools. |
Recent technical advances in polypropylene
Lyondell Basell Industries – Ferrara site: Basell Poliolefine Italia Srl, P.le Donegani 12, 44100 Ferrara, Italy
* To whom correspondence should be addressed. E-mail: gabriele.mei{at}lyondellbasell.com.
The Spherizone process technology, which is based on a multi-zone circulating reactor (MZCR), represents a significant innovation in polypropylene (PP) production. In comparison to traditional multi-step technologies, the MZCR provides a step change in the polymer homogeneity of the final product, obtained by continuously circulating the growing polymeric granules between two interrelated zones where different gas-phase compositions are realized. In addition to traditional Z-N catalysts, metallocene catalysts are also being introduced in PP manufacture: single-site catalysts allow differentiated products with outstanding property combinations. Due to its versatility and sustainability, PP continues to be utilized in a large range of applications. Innovative polymer structures featuring diverse comonomers exhibit improved properties (i.e., stiffness-impact balance, aesthetics, transparency, processability), which reinforce the capability of PP to replace traditional materials such as wood, paper, glass, and metals, as well as standard polymer products.
First published on August 11, 2009 |
||||||
 |
|
|
 |
|
Sign In to gain access to subscriptions and/or personal tools.
