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:
Feb. 02, 2010
Filed:
Feb. 24, 2004
Dietrich Scherzer, Neustadt, DE;
Hanns-jörg Krautschneider, Neustadt, DE;
Franz-josef Dietzen, Hassloch, DE;
Dietrich Scherzer, Neustadt, DE;
Hanns-Jörg Krautschneider, Neustadt, DE;
Franz-Josef Dietzen, Hassloch, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The present invention relates to an open-cell foam, and to a process for producing this open-cell foam by melting a thermoplastic, or a mixture comprising a thermo-plastic, giving a melt, mixing the melt with at least one blowing agent under pressure, and foaming the melt comprising the blowing agent via extrusion into the free atmosphere, the temperature of the melt during the foaming process being greater than the melt temperature at which a closed-cell foam is formed, and/or adding a pulverulent solid, and/or adding a foreign polymer. The present invention further relates to the use of the foam of the invention for sound deadening or for producing materials by sound deadening.