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:
Jan. 21, 1997
Filed:
Oct. 26, 1995
Applicant:
Inventors:
Dietrich Scherzer, Neustadt, DE;
Wolfram Husemann, Neustadt, DE;
Michael Witt, Ludwigshafen, DE;
Klaus Hahn, Kirchheim, DE;
Knut Kaempfer, Ludwigshafen, DE;
Gerhard Alicke, Worms, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; B29B / ; C08F / ;
U.S. Cl.
CPC ...
525241 ; 264 53 ; 264 455 ; 321 56 ;
Abstract
Expandable styrene polymers containing recycled polystyrene have a content of recycled material of up to 40% by weight, based on the total weight of the polystyrene, wherein, in the course of the polymerization of the reaction mixture, from 100 to 500 ppm of a molecular weight regulator and/or from 0.05 to 1.0% by weight, based in each case on the polymerization solution, of a finely divided polyethylene wax are added.