# STABILIZATION OF SYNDIOTACTIC POLYSTYRENE OBTAINED IN PRESENCE OF CpTiCl2(OC6H4Cl)/MAO CATALYST

> Title: STABILIZATION OF SYNDIOTACTIC POLYSTYRENE OBTAINED IN PRESENCE OF CpTiCl2(OC6H4Cl)/MAO CATALYST Page Range: p.153-158 Author(s): Kowalska E; Skupinski W; Wozniewski T; Wielgosz Z; Borensztejn M File size: 114K Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites...

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Published: 2003-02-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: STABILIZATION OF SYNDIOTACTIC POLYSTYRENE OBTAINED IN PRESENCE OF CpTiCl2(OC6H4Cl)/MAO CATALYST**
 Page Range: p.153-158
 Author(s): Kowalska E; Skupinski W; Wozniewski T; Wielgosz Z; Borensztejn M
 File size: 114K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc11-2&JournalID=100068&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 11
 Issue No: No. 2

**Abstract**
 The stabilisation of syndiotactic polystyrene, obtained in the presence of the original cyclopentadienyl (p-chlorophenoxy) dichlorotitanium (IV)/methylaluminoxane catalytic system, was investigated. Use of this catalytic system, syndiotactic polystyrene melted in the temperature region of 250-260 degrees C, giving a wider temperature window for processing. Five types of commercial antioxidant and stabilisers were used, together with two specially synthesised stabilisers. These were used in amounts from 0.05 to 1.0 wt.%, and the stability of unstabilised and stabilised syndiotactic polystyrene in a moulding process was evaluated by measuring the melt flow rate in a plastometer, and after four extrusion passes. A second method for the evaluation of the stability of sPS was the measurement of the Index of Thermal Stability. Results of the trials are given. 14 refs.

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