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:
Aug. 17, 2010
Filed:
Jun. 06, 2003
Franz-josef Dietzen, Hassloch, DE;
Gerd Ehrmann, Deidesheim, DE;
Bernhard Schmied, Frankenthal, DE;
Martin Laun, Mannheim, DE;
Klaus Hahn, Kirchheim, DE;
Joachim Ruch, Stuttgart, DE;
Markus Allmendinger, Deggingen, DE;
Jan Holoch, Leimen, DE;
Achim Datko, Leimen, DE;
Franz-Josef Dietzen, Hassloch, DE;
Gerd Ehrmann, Deidesheim, DE;
Bernhard Schmied, Frankenthal, DE;
Martin Laun, Mannheim, DE;
Klaus Hahn, Kirchheim, DE;
Joachim Ruch, Stuttgart, DE;
Markus Allmendinger, Deggingen, DE;
Jan Holoch, Leimen, DE;
Achim Datko, Leimen, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for the preparation of expandable styrene polymers having a molecular weight Mof greater than 170,000 g/mol, which comprises conveying a blowing agent-containing styrene polymer melt having a temperature of at least 120° C. through a die plate with holes whose diameter at the die exit is at most 1.5 mm, and subsequently granulating the extrudate, and expandable styrene polymers (EPS) having a molecular weight Mof more than 170,000 g/mol with 0.05 to 1.5% by weight of internal water.