Bead-form, expandable styrene polymers having a reduced internal water content, and their preparation

US5585410A · kind A · utility

Assignee

• BASF SE

Inventors

• Dietrich Scherzer · Neustadt, DE
• Klaus Hahn · Lampertheim, DE
• Michael Riethues · Ludwigshafen, DE
• Dieter Naegele · Worms, DE
• Michael Witt · Ludwigshafen, DE
• Wolfram Husemann · Neustadt, DE

Key dates

• Filing date: May 8, 1995
• Grant date: Dec 17, 1996
• Expiry date: May 8, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L23/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Bead-form, expandable styrene polymers containing, based on the styrene polymer, from 0.005 to 1.5% by weight of polyethylene wax and from 0.005 to 1% by weight of dimeric .alpha.-methylstyrene, and a process for the preparation thereof.