The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2005
Filed:
May. 27, 2003
Cyril Chevillard, Dickinson, TX (US);
Jose M. Sosa, Deer Park, TX (US);
Aron Griffith, Humble, TX (US);
Jay Reimers, Houston, TX (US);
Cyril Chevillard, Dickinson, TX (US);
Jose M. Sosa, Deer Park, TX (US);
Aron Griffith, Humble, TX (US);
Jay Reimers, Houston, TX (US);
Fina Technology, Inc., Houston, TX (US);
Abstract
It has been discovered that improved polystyrene products may be obtained by polymerizing styrene in the presence of at least one multifunctional initiator, at least one chain transfer agent, and at least one cross-linking agent. The presence of the multifunctional initiator tends to cause more branched structures in the polystyrene. A mathematical model that helps optimize the levels of these additives for given molecular weights, melt flow indices (MFIs) and zero shear viscosities (η) has also been discovered.